Consumer electronics: Touch screen technology enables users to make phone calls, send text messages, browse web pages, take photos and videos through intuitive gesture operations. Smartphones and tablets are the most typical application areas of touch screen technology.
Industrial control: Touch screens are widely used in automated production lines, CNC machine tools, robots, and other equipment, improving production efficiency and operational convenience. In the field of industrial control, touch screens can replace traditional buttons and keyboards, achieving more intuitive and efficient operations.
Healthcare: Touch screen technology enables doctors and nurses to quickly view patients’ medical records and examination results through touch screens, improving diagnosis and treatment efficiency. In addition, touch screens can also be used for controlling and operating medical equipment, such as ultrasound devices, hemodialysis machines, etc.
Education and entertainment: Touchscreen technology has been applied to electronic whiteboards, interactive games, virtual reality and other scenarios, enhancing the interactivity and fun of learning and entertainment. In the field of education, touch screens can be used for multimedia teaching, remote education, etc., to improve teaching effectiveness and learning experience.
Public information query: Touch screen technology is widely used in business query systems of telecommunications bureaus, tax bureaus, banks, power and other departments, as well as information query systems on urban streets. These systems provide convenient information query services through touch screens, improving the efficiency and convenience of public services.
Retail and Service Industry: Touch screen technology is also applied in the retail and service industries, such as self-service vending machines, automated ticketing systems, restaurant ordering systems, etc. These systems provide intuitive operating interfaces through touch screens, making it convenient for users to shop, purchase tickets, and order meals.
Classification of touch screens
Touchscreens can be classified according to different standards, and common classification methods include the following:

Classified by working principle and medium of information transmission:
Resistive touch screen: detects touch position through pressure changes between two conductive layers, suitable for stylus input and multi touch. Resistive touch screens have high precision and stability, but may be affected by scratches and wear.
Capacitive touch screen: Utilizing the capacitive effect of the human body, the touch position is determined by detecting changes in the electric field. Capacitive touch screens have the advantages of high sensitivity, fast response speed, and support for multi touch, and are widely used in fields such as smartphones and tablets.
Infrared touch screen: Determine the touch position by detecting the obstruction of fingers or objects through an infrared matrix. Infrared touch screens are suitable for large-sized displays, but may be affected by light interference and surface distortion.
Surface acoustic wave touch screen: Using the propagation of sound waves on the glass surface, the touch position is determined by detecting the attenuation of sound waves. Surface acoustic wave touch screens have high transparency and durability, but may be affected by water droplets and dust.
Classified by installation method:
External touch screen: The touch detection device of the touch screen system is directly installed in front of the display device, which is easy to install and suitable for temporary use.
Built in touch screen: Install the touch detection device inside the housing of the display device, in front of the cathode ray tube. When manufacturing display devices, the touch detection device is made on the cathode ray tube, so that the display device directly has touch function.
Integrated touch screen: When manufacturing display devices, the touch detection device is integrated with the display device to form an integrated touch screen product.
Classified by technical principles (in addition to the four mentioned above, it also includes):
Vector pressure sensing technology touch screen: However, this technology has exited the historical stage.
In summary, touch screen technology has a wide range of applications in various fields, and with the continuous development of technology, its application scope and performance are also constantly improving. At the same time, there are various ways to classify touch screens, and users can choose the appropriate type of touch screen according to their actual needs.

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Structure

A capacitive touch screen is primarily composed of a multi-layer composite glass screen. The inner surface and interlayer of the glass screen are each coated with a layer of Indium Tin Oxide (ITO), and the outermost layer is a thin layer of silicone glass protective layer. The interlayer ITO coating serves as the working surface, with four electrodes extending from the four corners. The inner layer of ITO is a shielding layer to ensure a good working environment.

Principle of Operation

When a finger touches the metal layer, due to the human body’s electric field, a coupling capacitor is formed between the user’s finger and the touch screen surface. Since the working surface is connected to a high-frequency signal, a small current is drawn away from the finger at the contact point. This current flows out from the electrodes on the four corners of the screen, and the current flowing through these four electrodes is proportional to the distance from the finger to the four corners. The controller precisely calculates the proportions of these four currents to determine the position of the touch point.

Types

There are mainly two types of capacitive touch screens:

1. Surface Capacitance: This type is coated with small voltage conductive layers on one side and has limited resolution. It is often used in kiosks.

2. Projected Capacitive Touch (PCT): This type uses etched conductive layers with electrode grid patterns and has a robust architecture. It is commonly used in point-of-sale transactions and is capable of multitouch. PCT can be further divided into PCT Mutual Capacitance and PCT Self Capacitance.

   • PCT Mutual Capacitance: A capacitor is located at each grid intersection via applied voltage, facilitating multitouch.
   • PCT Self Capacitance: Columns and rows operate individually via current meters. It has a stronger signal than PCT mutual capacitance and functions optimally with one finger.

Characteristics

1. High Sensitivity: Capacitive touch screens can respond to slight touches, providing a smooth and intuitive user experience.
2. Durability: The glass and protective layer design provide good durability and scratch resistance.
3. Multitouch Capability: Many capacitive touch screens support multitouch, allowing users to perform complex gestures and operations.
4. Limited Use Conditions: Due to its reliance on electrical conductivity, capacitive touch screens may not function well under certain conditions, such as wearing gloves or in environments with high humidity or static electricity.

Applications

Capacitive touch screens are widely used in various fields due to their excellent performance and user experience. Common applications include:

1. Smartphones and Tablets: Capacitive touch screens provide intuitive and convenient control methods for users.
2. Industrial Control and Medical Equipment: Capacitive touch screens offer reliable touch control in special environments.
3. Automotive Navigation and Entertainment Systems: They allow drivers and passengers to more conveniently control navigation, audio, and other functions.

In summary, a capacitive touch screen is a type of touch-sensitive display technology that uses the electrical conductivity of the human body to detect touch. It has high sensitivity, durability, and multitouch capabilities, making it widely used in various fields.

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Monitoring system
The monitoring system is mainly used for real-time monitoring and data collection of the operating status of industrial equipment. It collects the operating parameters and status information of the equipment by installing various sensors such as temperature sensors, pressure sensors, vibration sensors, etc. After processing and analyzing this information, it can be provided to operators or automatic control systems to determine whether the equipment is operating normally and whether maintenance or repair measures need to be taken.

The advantages of the monitoring system include:

Real time monitoring: It can reflect the operating status of the equipment in real time and discover potential problems in a timely manner.
Data collection: Collecting large amounts of data through sensors to provide powerful support for equipment maintenance and optimization.
Warning function: When the device encounters abnormalities, the monitoring system can issue timely warnings to avoid accidents.
Mechanical protection system
Mechanical protection systems are mainly used to protect industrial equipment from damage or malfunction. It monitors the operating status of the equipment and automatically takes protective measures such as stopping, slowing down, or adjusting operating parameters when abnormal situations are detected to prevent further damage or failure of the equipment.

The advantages of mechanical protection systems include:

High reliability: able to accurately determine the operating status of equipment and take timely protective measures.
Comprehensive protection: It can cover all key parts of the equipment and provide all-round protection.
High degree of automation: capable of automatic monitoring, judgment, and taking measures, reducing manual intervention.
The relationship between monitoring system and mechanical protection system
Monitoring systems and mechanical protection systems play a complementary role in the safe operation of industrial equipment. The monitoring system provides real-time data and status information for the mechanical protection system, enabling it to accurately determine the operating status of the equipment and take corresponding protective measures. The mechanical protection system provides real-time protection for the equipment based on the data and information from the monitoring system, ensuring the safe and stable operation of the equipment.

Application examples
In practical applications, monitoring systems and mechanical protection systems are widely used in various industrial fields, such as power, petrochemicals, metallurgy, machinery, etc. For example, in the power industry, monitoring systems and mechanical protection systems are used to monitor and protect key equipment such as generators and transformers; In the petrochemical industry, they are used to monitor and protect rotating equipment such as compressors and pumps.

In summary, monitoring systems and mechanical protection systems are important guarantees for the safe operation of industrial equipment. They provide strong support for equipment maintenance and optimization through real-time monitoring and data analysis, while ensuring that equipment can be protected in a timely manner in case of abnormal situations to avoid accidents.

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1、 Company Overview
Established: BENTLY NEVADA was an American private company from 1961 to 2002, which was acquired by Baker Hughes, a subsidiary of GE Energy, in February 2002.
Main business: Industrial monitoring and control technology, committed to achieving effective protection and management of industrial assets.
Industry experience: With over 60 years of industry experience, I am a leader in the industry.
2、 Main products
BENTLY NEVADA’s main products include condition monitoring systems, mechanical protection systems, condition monitoring sensors, condition monitoring software, as well as related hardware and services. Among them, the 3500 series is one of its representative products, which includes various components such as Module/Module, Proximitor Sensor, Cable, Rack/Chassis, etc. For example:

3500/45 Monitoring System: This system includes the 135137-01 position input/output module, which can be used in conjunction with Proximitors, RPT, or DC LVDT. It is a 4-channel device that can receive inputs from various sensors and is widely used in industrial automation, power plants, aerospace, and manufacturing industries.
33500/20 Vibration Monitoring and Analysis System: This system combines the latest signal processing technology and sensor technology, providing accurate and reliable vibration data to help engineers detect potential problems in a timely manner and ensure the safe operation of equipment.
3、 Technical advantages
BENTLY NEVADA’s products and services are supported by over 60 years of experience, with industry-leading expertise and truly global support. The combination of its status monitoring software and related hardware products can work seamlessly, providing customers with real-time data, status monitoring, and alarm protocols to prevent unexpected shutdowns, accurately monitor vibrations, and correctly diagnose equipment issues.

4、 Application Fields
BENTLY NEVADA’s products are widely used in various industrial fields, especially in situations where precise monitoring of mechanical system displacement and rotational position is required. For example, in the field of industrial automation, it is used to monitor and control the position or vibration of mechanical components on production lines; In power plants, monitor the displacement of rotating components of key equipment such as turbines and generators; In the field of aerospace, monitoring the displacement of moving parts in aerospace applications; In manufacturing, measuring and monitoring the location of production equipment to ensure the accuracy of the production process.

In summary, BENTLY NEVADA holds an important position in the field of industrial monitoring and control technology due to its rich industry experience, advanced technological advantages, wide application areas, and high-quality products and services.

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What is a driver
Driver broadly refers to the hardware that drives a certain type of device. In the field of computer science, a drive refers to a disk drive. A storage area formatted with a drive letter through a file system. The storage area can be a floppy disk, CD, hard disk, or other type of disk. Click on the corresponding icon in Windows Explorer or My Computer to view the detailed contents of the drive.

The driver is located in the middle of the main control box (Main Controller) ->Driver ->Motor during the entire control process. The main function of the driver is to receive signals from the main control box (NC CARD), process the signals, and then transfer them to the motor and the sensors related to the motor, and feedback the working condition of the motor to the main control box (Main Controller).

What is a motor driver

A motor driver is simply a switch, because the motor drives a large current or voltage, and when ordinary switches or electronic components cannot be used as switches to control the motor, a so-called driver must be added to control the motor.

The function of a motor driver: The function of a motor driver refers to controlling the idle speed of a motor by controlling the rotation angle and operating speed of the motor to achieve control over the duty cycle.

Principle circuit diagram of motor drive circuit: The motor drive circuit can be driven by relays or power transistors, or by thyristors or power type MOSFETs. In order to adapt to different control requirements (such as motor operating current, voltage, motor speed regulation, forward and reverse control of DC motors, etc.), different types of motor drive circuits must meet relevant requirements.

The electric vehicle does not start when powered on, making it difficult to push and accompanied by a “clacking” sound. The occurrence of this situation is caused by a short circuit in the motor wire due to virtual contact. It is difficult to remove the three coarse phase wires of the motor and push the cart, indicating that the controller is broken and needs to be replaced in a timely manner. If the implementation is still difficult, it indicates that there is a problem with the motor, which may be caused by a short circuit and burning of the motor coil.

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Background knowledge:

Power supply is the heart of all electronic devices, and all electronic devices cannot do without power supply to provide energy. Power supply is widely used in various fields such as scientific research, economic construction, national defense facilities, and daily life. It is the foundation of electronic and electromechanical equipment, closely related to various sectors of the national economy, and widely used in industrial and agricultural production.

Basic principle:

According to the application fields of modern power electronics, we divide power sources as follows:

1. High efficiency green power supply for computers

The rapid development of computer technology has led humanity into the information society, while also promoting the rapid development of power technology. In the 1980s, computers fully adopted switch mode power supplies, taking the lead in completing the replacement of computer power supplies. Subsequently, switch mode power supply technology has entered the fields of electronics and electrical equipment.

The development of computer technology has led to the proposal of green computers and green power sources. Green computers generally refer to personal computers and related products that are harmless to the environment. Green power refers to high-efficiency and energy-saving power sources related to green computers. According to the Energy Star program of the US Environmental Protection Agency on June 17, 1992, desktop personal computers or related peripheral devices that consume less than 30 watts of power during sleep meet the requirements of green computers. Improving power efficiency is the fundamental way to reduce power consumption. For the current 200 watt switching power supply with an efficiency of 75%, the power supply itself consumes 50 watts of energy.

High frequency switching power supply for communication

The rapid development of the communication industry has greatly promoted the development of communication power supply. High frequency miniaturized switching power supplies and their technologies have become the mainstream of modern communication power supply systems. In the field of communication, rectifiers are commonly referred to as primary power sources, while DC-DC converters are referred to as secondary power sources. The function of a primary power supply is to convert a single-phase or three-phase AC power grid into a DC power supply with a nominal value of 48V. At present, in the primary power supply used in program-controlled switches, traditional phase controlled regulated power supplies have been replaced by high-frequency switching power supplies. High frequency switching power supplies (also known as switch mode rectifiers SMR) operate at high frequencies through MOSFETs or IGBTs, with switching frequencies generally controlled within the range of 50-100kHz, achieving high efficiency and miniaturization. In recent years, the power capacity of switch rectifiers has been continuously expanding, with single machine capacity increasing from 48V/12.5A and 48V/20A to 48V/200A and 48V/400A.

Due to the wide variety of integrated circuits used in communication equipment and their varying power supply voltages, high-power density high-frequency DC-DC isolated power modules are used in communication power supply systems to convert the intermediate bus voltage (usually 48V DC) into various required DC voltages. This greatly reduces losses, facilitates maintenance, and is very easy to install and add. Generally, it can be directly installed on a standard control board, and the requirement for the secondary power supply is high power density. Due to the continuous increase in communication capacity, the capacity of communication power supply will also continue to increase.

3 DC-DC converters

The DC/DC converter converts a fixed DC voltage into a variable DC voltage. This technology is widely used in the continuously variable transmission and control of trolleybus, subway trains, and electric vehicles, while achieving smooth acceleration, fast response performance, and energy-saving effects. Replacing the variable resistor with a DC chopper can save energy by 20-30%. DC chopper can not only regulate voltage (switching power supply), but also effectively suppress harmonic current noise on the grid side.

The secondary power DC/DC converter for communication power supply has been commercialized, and the module adopts high-frequency PWM technology with a switching frequency of around 500kHz and a power density of 5W~20W/n3. With the development of large-scale integrated circuits, there is a demand for miniaturization of power modules. Therefore, it is necessary to continuously increase the switching frequency and adopt new circuit topologies. Currently, some companies have developed and produced secondary power modules using zero current switching and zero voltage switching technologies, which have significantly improved power density.

4 Uninterruptible Power Supply (UPS)

Uninterruptible power supply (UPS) is a highly reliable and high-performance power source necessary for computers, communication systems, and applications that require uninterrupted power supply. The AC mains input is converted into DC through a rectifier, and a portion of the energy is used to charge the battery pack. The other portion of the energy is converted into AC through an inverter and sent to the load through a conversion switch. In order to provide energy to the load in case of inverter failure, another backup power supply is implemented through a power conversion switch.

Modern UPS commonly uses pulse width modulation technology and modern power electronic devices such as M0SFET and IGBT, which reduces power noise and improves efficiency and reliability. The introduction of microprocessor software and hardware technology can achieve intelligent management, remote maintenance, and remote diagnosis of UPS.

At present, the maximum capacity of online UPS can reach 600kVA. The development of ultra small UPS is also very rapid, with various specifications of products such as 0.5kVA, lVA, 2kVA, 3kVA, etc.

5. Inverter power supply

Variable frequency power supply is mainly used for variable frequency speed regulation of AC motors, and its position in electrical transmission systems is becoming increasingly important, achieving significant energy-saving effects. The main circuit of the frequency converter power supply adopts the AC-DC-AC scheme. The power supply is converted into a fixed DC voltage through a rectifier, and then a PWM high-frequency converter composed of high-power transistors or IGBTs inverts the DC voltage into an AC output with variable voltage and frequency. The output waveform of the power supply is similar to a sine wave, which is used to drive AC asynchronous motors to achieve stepless speed regulation.

Internationally, a series of frequency converter power supply products below 400kVA have been launched. In the early 1980s, Toshiba Corporation of Japan was the first to apply AC variable frequency speed regulation technology to air conditioners. By 1997, its market share had reached over 70% of Japan’s household air conditioners. Variable frequency air conditioning has advantages such as comfort and energy efficiency. In the early 1990s, research on variable frequency air conditioners began in China. In 1996, production lines were introduced to produce variable frequency air conditioners, gradually forming a hot spot in the development and production of variable frequency air conditioners. It is expected to reach a climax around the year 2000. In addition to the variable frequency power supply, the variable frequency air conditioner also requires a compressor motor suitable for variable frequency speed regulation. Optimizing control strategies and selecting functional components are further development directions for the research and development of air conditioning variable frequency power supplies.

6 High frequency inverter rectifier welding machine power supply

High frequency inverter rectifier welding machine power supply is a new type of welding machine power supply with high performance, high efficiency, and material saving, representing the development direction of welding machine power supply today. Due to the commercialization of IGBT high-capacity modules, this power supply has broad application prospects.

Most inverter welding machine power supplies use the AC-DC-AC-DC conversion method. 50Hz AC power is rectified by a full bridge and converted into DC power. The PWM high-frequency conversion part composed of IGBT reverses the DC power into a 20kHz high-frequency rectangular wave, which is coupled by a high-frequency transformer, rectified and filtered to become a stable DC power for arc supply.

Due to the harsh working conditions of the welding machine power supply, which frequently alternates between short circuits, arcing, and open circuits, the reliability of the high-frequency inverter rectifier welding machine power supply has become the most critical issue and the most concerned issue for users. Using a microprocessor as the relevant controller for pulse width modulation (PWM), by extracting and analyzing multiple parameters and information, the goal of predicting various working states of the system can be achieved, and the system can be adjusted and processed in advance to solve the reliability of high-power IGBT inverter power sources.

Foreign inverter welding machines can achieve a rated welding current of 300A, a load duration of 60%, a full load voltage of 60-75V, a current regulation range of 5-300A, and a weight of 29kg.

7 high-power switch type high-voltage DC power supply

High power switch type high-voltage direct current power supplies are widely used in large equipment such as electrostatic precipitators, water quality improvement, medical X-ray machines, and CT machines. The voltage can reach up to 50~159kV, the current can exceed 0.5A, and the power can reach 100kW.

Since the 1970s, some Japanese companies have adopted inverter technology, which rectifies the mains power and converts it into a medium frequency of around 3kHz, and then boosts it. In the 1980s, high-frequency switching power supply technology developed rapidly. Siemens AG in Germany uses power transistors as the main switching element to increase the switching frequency of the power supply to over 20kHz. And the dry-type transformer technology has been successfully applied to high-frequency and high-voltage power supplies, eliminating the high-voltage transformer oil tank and further reducing the volume of the transformer system.

A high-voltage DC power supply for electrostatic precipitator has been developed domestically. The mains power is rectified into DC, and a full bridge zero current switch series resonant inverter circuit is used to invert the DC voltage into high-frequency voltage, which is then stepped up by a high-frequency transformer and finally rectified into DC high voltage. Under resistive load conditions, the output DC voltage reaches 55kV, the current reaches 15mA, and the operating frequency is 25.6kHz.

8. Active power filter

Traditional AC-DC converters inject a large amount of harmonic current into the power grid during operation, causing harmonic losses and interference. At the same time, there is also a phenomenon of deterioration of the power factor on the grid side, known as “power pollution”. For example, when uncontrolled rectification and capacitor filtering are added, the third harmonic content on the grid side can reach (70-80)%, and the power factor on the grid side is only 0.5-0.6.

Active power filter is a new type of power electronic device that can dynamically suppress harmonics, overcome the shortcomings of traditional LC filters, and is a promising harmonic suppression method. The filter consists of a bridge switch power converter and a specific control circuit. The difference from traditional switching power supplies is that: (l) it not only feeds back the output voltage, but also feeds back the average input current; (2) The current loop reference signal is the product of the voltage loop error signal and the full wave rectified voltage sampling signal.

9 Distributed Switching Power Supply System

The distributed power supply system uses small power modules and large-scale control integrated circuits as basic components, and utilizes the latest theories and technological achievements to form a modular and intelligent high-power power supply. This tightly integrates strong and weak electricity, reduces the development pressure of high-power components and high-power devices (centralized), and improves production efficiency.

In the early 1980s, research on distributed high-frequency switching power supply systems mainly focused on the study of converter parallel technology. In the mid to late 1980s, with the rapid development of high-frequency power conversion technology, various converter topologies emerged one after another. Combined with large-scale integrated circuits and power component technology, the integration of small and medium-sized power devices became possible, which quickly promoted the research of distributed high-frequency switching power supply systems. Since the late 1980s, this field has become a research hotspot in the international power electronics industry, with an increasing number of papers and expanding application areas year by year.

The distributed power supply method has the advantages of energy saving, reliability, high efficiency, economy, and easy maintenance. It has been gradually adopted by large computers, communication equipment, aerospace, industrial control and other systems, and is also the most ideal power supply method for low voltage power (3.3V) of ultra high speed integrated circuits. In high-power applications, such as electroplating, electrolytic power supply, electric locomotive traction power supply, intermediate frequency induction heating power supply, electric motor drive power supply, etc., there are also broad application prospects.

Current situation and development:

Modern power electronics technology is the foundation of the development of switching power supply technology. With the continuous emergence of new power electronic devices and circuit topologies suitable for higher switching frequencies, modern power technology will rapidly develop under the driving force of practical needs. Under traditional application technologies, the performance of switching power supplies is affected due to limitations in power device performance. In order to maximize the characteristics of various power devices and minimize the impact of device performance on the performance of switching power supplies, new power circuit topologies and control technologies can enable power switches to operate in zero voltage or zero current states, thereby greatly increasing the operating frequency and efficiency of switching power supplies, and designing high-performance switching power supplies. Power electronics and switching power supply technology are constantly advancing due to application demands, and the emergence of new technologies will lead to the upgrading of many application products and the exploration of more new application areas. The realization of high-frequency, modular, digital, and green switching power supplies will mark the maturity of these technologies, achieving a combination of high-efficiency and high-quality electricity consumption. In recent years, with the development of the communication industry, there has been a market demand of over 2 billion yuan for communication switch power supplies with switch power supply technology as the core, which has attracted a large number of domestic and foreign scientific and technological personnel to develop and research them. The replacement of linear and phase controlled power supplies with switch mode power supplies is the trend, therefore, the domestic market for power operation power supply systems with billions of output value demand is starting to emerge and will soon develop. There are many other specialized power supplies and industrial power supplies with switch mode power supply technology as the core waiting for people to develop.

The post What is a power module first appeared on XIONGBA.

In the energy sector, GE offers a range of products and services, such as gas turbines, wind power equipment, and energy storage solutions. Its gas turbine technology enjoys a high reputation worldwide and is widely used in power plants and industrial fields.

In the medical field, GE’s medical equipment, such as magnetic resonance imaging (MRI), computed tomography (CT), and ultrasound devices, are highly regarded worldwide. These devices provide important technical support for medical diagnosis.

In the field of transportation, GE provides advanced equipment and solutions for industries such as railways, aviation, and ships. For example, GE provides technical support for various aircraft and train engines as well as power systems.

In the aerospace industry, GE also holds a pivotal position. The aircraft engines and related avionics systems produced by it provide critical technical support to airlines worldwide.

In addition, GE is also involved in multiple other fields such as lighting, industrial automation, etc. Its products and services are distributed in multiple countries and regions around the world.

Overall, GE is a multinational corporation with significant global influence, and its advanced technology and comprehensive solutions have made important contributions to the development of multiple industries worldwide.

The post General Electric first appeared on XIONGBA.

1、 Electric power generation
Distributed gas turbine power generation: Distributed gas turbine power generation is a technology that uses gas turbines (internal combustion engines) as power generation equipment to produce electricity on a small or decentralized scale. It usually uses gas, diesel or other liquid fuels as fuel, and drives a generator to generate electricity by burning high-temperature and high-pressure gas. Distributed gas turbine power generation has the advantages of moderate scale, high flexibility and reliability, high energy efficiency utilization, and low transmission losses, making it particularly suitable for the electricity needs of small industrial parks, commercial buildings, residential communities, and other places.
Large scale gas turbine power generation: Large scale gas turbines can achieve power of millions of kilowatts and are widely used for fuel consumption and energy conversion in power plants. The gas turbine power generation system can not only convert fuel into electrical energy, but also utilize the waste heat generated during the power generation process for heating or cooling, further improving energy utilization efficiency.
2、 Transportation and Communications
Automotive industry: Gas turbine systems play an important role in the automotive industry. By monitoring parameters such as engine speed, temperature, and fuel consumption through sensors, the control system can adjust the fuel injection amount and ignition timing in a timely manner, improve the combustion efficiency and power performance of the engine, and reduce emissions and fuel consumption.
In the aviation industry, gas turbines are equally crucial. The gas turbine control system can monitor fuel consumption and operational status during flight, adjust the quantity and timing of fuel injection according to flight requirements, and ensure efficient operation of the gas turbine and stable flight of the aircraft.
Ship power: Gas turbines are also widely used in ship power systems to provide continuous and stable power support for ships.
3、 Industrial power
Compressor, water pump and other equipment: Gas turbines can be used as power equipment in industrial equipment such as compressors and water pumps, providing the required mechanical energy.
Air conditioning equipment: In air conditioning equipment, the gas turbine system can drive the cooling or heating system, providing a comfortable indoor environment for the building. For example, a gas direct combustion engine cooling and heating system is an efficient and energy-saving air conditioning and heating system, mainly used in large commercial buildings, office buildings, hospitals, hotels, airports, industrial plants and other places that require a large amount of heating and cooling.
4、 Other applications
Distributed combined cycle power generation: Install gas turbines, waste heat boilers, steam turbines, generators and other equipment near the load center to achieve on-site power generation and supply. This power generation method also has the advantages of high efficiency, reliability, and flexibility, and can be used in various scenarios such as industrial enterprises and urban communities.
As a backup power source: The gas turbine system can also serve as a backup power source to provide emergency power support in the event of grid failure or power outage.
In summary, the application fields of gas turbine systems are extensive, covering multiple aspects such as power generation, transportation, and industrial power. With the continuous advancement of technology and the continuous development of the market, the application prospects of gas turbine systems will be even broader.

The post Application of gas turbine system first appeared on XIONGBA.

1、 Basic working principle of gas turbine

The working principle of a gas engine, especially an internal combustion engine, usually includes four basic processes: intake, compression, combustion, and exhaust. These four processes are carried out continuously in one or more cylinders, forming a working cycle. During the intake process, air (or a mixture of air and fuel) is introduced into the cylinder. During the compression process, the piston moves upwards, compressing the gas to a smaller volume, thereby increasing its temperature and pressure. During the combustion process, the fuel is ignited, releasing a large amount of heat energy and producing high-temperature and high-pressure gas. These gases push the piston downwards, thereby driving the crankshaft to rotate and converting thermal energy into mechanical energy. Finally, during the exhaust process, the exhaust gas is expelled from the cylinder.

2、 Composition of gas turbine system

The gas turbine system consists of multiple subsystems, each of which plays a crucial role. Here are some of the main subsystems:

Air intake system: responsible for introducing air into the combustion engine. In gas turbines, the intake system also includes the functions of filtering, silencing, and guiding the air entering the unit to the inlet of the compressor. It usually consists of an intake rainproof fog screen, a filter, an air filter backwash pipeline, etc.
Fuel system: provides fuel to the combustion chamber. This can include liquid fuel systems (such as fuel systems) and gas fuel systems (such as natural gas systems). In gas turbines, the fuel system also includes functions such as fuel supply, metering, and control.
Ignition system: Ignite the mixture of fuel and air at the appropriate time. In gasoline engines, this is usually achieved through spark plugs; In diesel engines, it is achieved through high-pressure fuel injectors.
Cooling system: used to cool various components of the gas turbine to prevent overheating and damage. This can include water cooling systems and air cooling systems.
Lubrication system: Provides lubricating oil to various moving parts of the gas turbine to reduce friction and wear. This includes the lubricating oil system and control oil system, etc.
Exhaust system: responsible for discharging exhaust gas from the combustion engine. In gas turbines, the exhaust system also includes functions such as exhaust gas treatment and emission control.
Control and monitoring system: used to monitor the operating status of the gas turbine, control its operating parameters, and diagnose faults. This includes sensors, controllers, and actuators, among others.
3、 Application of gas turbine system

Gas turbine systems are widely used in various fields, such as power generation, transportation (automobiles, airplanes, ships, etc.), industrial power, etc. Different types of gas turbine systems have different characteristics and advantages, suitable for different application scenarios.

In summary, the gas turbine system is a complex and multifunctional combination that drives various equipment and machinery by converting the thermal energy generated by fuel combustion into mechanical energy. Understanding the basic working principles, composition, and applications of gas turbine systems is crucial for ensuring their efficient, reliable, and safe operation.

The post What is a gas turbine system？ first appeared on XIONGBA.

The latest episode of ABB’s technology-focused podcast ABB Decoded discusses technologies for greener shipping, this year’s theme of the World Maritime Day on September 29. The theme provides an opportunity to focus on the importance of a sustainable maritime sector and engage in a global dialogue on the topic.

With more than 80 percent of all goods worldwide being transported via ships, and the number expected to significantly increase over the next few years, the imperative of the maritime transport sector to support global sustainability is clear. The marine industry has set ambitious sustainability and carbon neutrality targets in response to the global climate challenge. A key part of ABB’s 2030 sustainability strategy is to support customers and suppliers to reduce their emissions and achieve carbon neutrality in ABB’s own operations by 2030.

In the podcast Eero Lehtovaara, Head of Regulatory and Public Affairs, Marine & Ports at ABB, talks about increasing engine efficiency, the use of alternative energy sources like hydrogen or electricity, and how digital technologies can help create autonomous solutions to support greener shipping. In addition, he discusses the importance of evolving technologies in line with changing marine regulations.

Lehtovaara is in a unique position within ABB Marine & Ports as the internal and external focal point between maritime technology and regulation, bringing understanding between stakeholders in both areas. He is also ABB’s representative to a number of EU and global maritime agencies and NGOs.

“The marine industry is aiming for higher efficiency, reliability, predictability, and utilizing more information gained from digital technologies,” explains Lehtovaara. He expects a broad variety of solutions will play a role in reaching these ambitions. For instance, new technologies that are able to increase energy efficiency of ships, as well as the production and uptake of low-carbon marine fuels and the technologies to produce such fuels, are important for greener shipping.

As reliable and accessible alternative fuels are being developed, existing technologies are already available to increase the energy efficiency along with electrifying the maritime industry. Lehtovaara explains how digitalization brings forward the possibility to use data and information to further enhance the capabilities of the technologies that are already available. For example, digitalization enhancements to reduce turn-around times in ports can also contribute to the greening of shipping, by promoting and enabling optimization of resource and energy use.

Speaking about the current state of the marine sector, in the podcast Lehtovaara shares, “It’s an extremely interesting phase that we’re living in the maritime industry at the moment. I would say that really using information to the benefit of all the stakeholders is one of the biggest things that is still to come. The overall management of the big picture is really reliant on data. How we manage that data, how we process that data, and how the shipping companies are using that in their systems is something that’s very much going on at the moment and is very much dependent on the regulatory framework.”

The podcast concludes with Lehtovaara summarizing the critical importance of the relationship between the industry and the regulators and the need for open dialogue between the two. “We need to have a common understanding as an industry as a whole, including the regulators, on what technologies can do, what technologies are coming and where do we find the gaps in the regulatory setup that we need to work together with.”

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