Description
RET670 1MRK002816-AB Использование параметров ABB
Швейцария, и входит в десятку крупнейших швейцарских транснациональных корпораций.RET670 1MRK002816-AB
химическая, нефтехимическая, фармацевтическая, целлюлозно – бумажная, нефтепереработка; Оборудование приборов: электронные приборы, телевизоры и оборудование для передачи данных,
генераторы, гидротехнические сооружения; Каналы связи: интегрированные системы, системы сбора и распространения;RET670 1MRK002816-ABСтроительная промышленность: коммерческое и промышленное строительство.
2. Principle of frequency converter
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
IS215VCMIH2CA GE
IS215VCMIH2CA IS200VCMIH2CAA GE
IS215VPROH1BD GE
IS220PAICH1A 336A4940CSP3 GE
IS220PAICH2A 336A4940CSP11 GE
IS220PAOCH1A 363A4940CSP5 GE
GE IS220PDIAH1A 336A4940CSP1 Discrete Input Module – Mark VI IS200
IS220PDIAH1B 336A5026ADP4 GE
IS220PDIIH1B 336A5026ADP1 GE
IS220PDOAH1A 3364940CSP2 GE
IS220PPDAH1B 336A5026ADP14 GE
GE IS220PPRFH1A 336A4940CSP20
IS220PPRFH1B 336A5026ADP2 GE
GE IS220PPROS1B 336A5026ADP22- Emergency Turbine Protection I/O Package
IS220PRTDH1A 363A4940CSP6 GE
IS220PRTDH1BC 336A5026ADP13 GE
IS220PSVOH1A GE
IS220PSVOH1B GE
GE IS220UCSAH1A embedded controller module
IS220YDIAS1A GE
IS220PSVOH1A GE
XXD129A01 Communication module ABB
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XO16N1-B20 XO16N1-C3.0 ABB
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