In embedded development, the control of motors is often involved. Currently, frequency conversion control of AC motors is widely used, so let’s briefly introduce the frequency converter by looking at the diagram, assuming that you already understand the principle of the motor.

The block diagram is as follows:

The frequency converter is mainly composed of rectifier (AC to DC), filtering, inverter (DC to AC), braking unit, drive unit, detection unit, microprocessing unit, etc. The inverter relies on the switching of the internal IGBT to adjust the voltage and frequency of the output power supply, and provides the required power supply voltage according to the actual needs of the motor, thereby achieving the purpose of energy saving and speed regulation. In addition, the inverter also has many protection functions. , such as overcurrent, overvoltage, overload protection, etc. With the continuous improvement of industrial automation, frequency converters have also been widely used.

A typical inverter system diagram is shown below. It mainly includes operation panel, VFD controller, motor and other parts.

1. Typical structure:

Mainly includes: control platform, measurement circuit, power circuit, protection circuit, etc.

There are two common types of frequency converters: voltage type and current type. Among them, the power inverter part mostly uses power tubes such as IGBT and IGCT.

2. Typical algorithm:

Among them, the control algorithm represented by Siemens is mainly based on coordinate transformation (vector control). Friends who are interested in the algorithm represented by ABB can search for information by themselves (direct torque control) and will not go into details here.

3. Vector control:

Many chip MCU and MPU manufacturers have provided block diagrams and algorithm libraries for variable frequency vector control. Those who are interested can study it. For example, the following figure is a block diagram provided by Microchip

VT-MVTW-1-16 D Rexroth  Digital closed-loop control
MTS30M4-38C SERVO MOTOR
A4H124-24TX ENTERASYS A4 series network switches
SYHNC100-NIB-2X W-24-P-D-E23-A012 Rexroth  Servo valve controller
IS220UCSAH1AK GE  processor/ controller
3625A TRICONEX Digital 24VDC Output Module
140CPU67160 Schneider UNITY HOT STANDBY PROCESSOR
CLS208 WATLOW ANAFAZE temperature controller
TPMC815-11  TEWS   ARCNET Interface Module
BL0308  TEAM  Safety System Central Module
BL0170  TEAM  controller system
BG0090  TEAM  Printed circuit board
RM3141-01-02  SAT  controller system
S83-1003-01  STEC  controller system
CM3142-01-03 SAT controller system
CM3141-02-03  SAT  controller system
PMC237C-008EMI  RAMIX  Expansion Module
PMC008A 700502  RAMIX  PMC to Mezzanine Adapter
IS200PMCIH1ABA GE Printed Circuit Board
IS215UCVEM08B   GE  PROCESSOR BOARD
8AC120   B&R  ACOPOS plug-in module, CAN interface
SCYC51020 58052582H   ABB  FIRING UNIT CARD
3500-42M 176449-02  Bently Nevada Proximitor/Seismic Monitor
8AC110  B&R  ACOPOS plug-in module, CAN interface
SCYC51010 58052515G  ABB  FIRING UNIT CARD
SR750-P5-G5-S5-HI-A20-R-T GE 750 Series Feeder Mgmt Relay
CLS208  WATLOW ANAFAZE temperature controller
P4LQA HENF209736R0003 ABB  Control Board
FBM230  P0926GU FOXBORO COMMUNICATION MODULE
6105-WA-PDPS PROSOFT  WIRELESS PROFIBUS GATEWAYS
6104-WA-PDPM  PROSOFT WIRELESS PROFIBUS GATEWAYS
SPASI23  ABB   AI Module
SPS5785 51198651-100  HONEYWELL Power Supply
1C31194G01  WESTINGHOUSE  alve Positioner Electronics Module
MVME147S-1   MOTOROLA  MPU VME Module
F650-G-N-A-B-F-2-G-1-HI-C-E GE Feeder Protection & Bay Controller
A6140 9199-00058 EMERSON  Controller module
3664 TRICONEX Digital Output Module
AIM0006 2RCA021397A0001F  ABB  Card board
K9203A 996920360 HIMA Heat dissipation fan module
K9203 996920302   HIMA  Heat dissipation fan module
S72402-NANANA  KOLLMORGEN  Servo Drive
SK827005 SK827100-AS ABB CONTACTOR EH550-30-11 480V 60Hz
AIP591 YOKOGAWA Transceiver Control Unit for V net Repeater
SR469-P5-HI-A20-E  GE  Motor Management Relay line
AIP171 YOKOGAWA Transceiver Control Unit for V net Repeater
D136-002-005 D138-002-002 MOOG Controller module
TP830 3BSE018114R1 ABB Baseplate for Processor Module

Company advantage service:
1.Has been engaged in industrial control industry for a long time, with a large number of inventories.
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All kinds of module card driver controller servo motor servo motor embedded card wires and cables Power module control module is applicable to steel, hydropower, nuclear power, power generation, glass factory, tire factory, rubber, thermal power, paper making, shipping, navigation, etc

ABB — AC 800M controller, Bailey, PM866 controller, IGCT silicon controlled 5SHY 3BHB01 3BHE00 3HNA00 DSQC series
BENTLY — 3500 system/proximitor, front and rear card, sensor, probe, cable 3500/20 3500/61 3500/05-01-02-00-001 3500/40M 176449-01 3500/22M 138607-01
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EPRO — PR6423 PR6424 PR6425 PR6426 PR9376 PR9268 Data acquisition module, probe, speed sensor, vibration sensor
FOXBORO — FCP270 FCP280 FCM10EF FBM207 P0914TD CP40B FBI10E FBM02 FBM202 FBM207B P0400HE Thermal resistance input/output module, power module, communication module, cable, controller, switch
GE —- IS200/215/220/230/420 DS200/215 IC693/695/697/698 VMICPCI VMIVME 369-HI-R-M-0-0-E 469 module, air switch, I/O module, display, CPU module, power module, converter, CPU board, Ethernet module, integrated protection device, power module, gas turbine card
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Honeywell — Secure digital output card, program module, analog input card, CPU module, FIM card
MOOG — D136-001-007 Servo valve, controller, module
NI — SCXI-1100 PCI – PXIE – PCIE – SBRIO – CFP-AO-210 USB-6525 Information Acquisition Card, PXI Module, Card
Westinghouse — RTD thermal resistance input module, AI/AO/DI/DO module, power module, control module, base module
Woodward — 9907-164 5466-258 8200-1300 9907-149 9907-838 EASYGEN-3500-5/P2 8440-2145 Regulator, module, controller, governor
YOKOGAWA – Servo module, control cabinet node unit

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FBM240 P0916FH FOXBORO Input/Output Module

Description

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