Description
hardware flow control. It is an ideal choice in the field of industrial automation.
[Introduction] PLC and frequency converter are two important electrical equipment in the field of industrial automation control. This book
combines the introductory knowledge of PLC and frequency converter. The main contents include introduction to PLC, PLC composition and
principle, and the use and application of PLC programming software. System development, basic instructions and applications, step instructions
and applications, functional instructions and use, the structure and principle of the frequency converter, the use of the frequency converter, as well as
the selection, installation and maintenance of the frequency converter.
What is a frequency converter ? Generally speaking, it is: AC – DC – AC (it can also be said to be rectifier first – then inverter). The frequency converter
that undergoes this process is also called AC-DC-AC frequency conversion. Currently, it is also used in various industries. One of the more commonly
used ones. In addition, there is also an AC-AC conversion, which is also called an AC converter.
1. What is a frequency converter?
Frequency converter is a power control device that uses the on-off function of power semiconductor devices to convert industrial frequency power into
another frequency. 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 frequency converter is a device that converts industrial frequency power supply (50Hz or 60Hz) into AC power supply of various frequencies to
realize variable speed operation of the motor. The control circuit completes the control of the main circuit, and the rectifier circuit converts the AC
power into DC power. The DC intermediate The circuit smoothes and filters the output of the rectifier circuit, and the inverter circuit reverses the DC
power into AC power. For inverters that require a lot of calculations, such as vector control inverters, sometimes a CPU for torque calculation and some
corresponding circuits are needed. Variable frequency speed regulation achieves the purpose of speed regulation by changing the frequency of power supply to the motor stator winding.
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ABB PPC907BE101
ABB PPC907BE101 3BHE024577R0101
ABB 3BSE009598R1
ABB PM150V08
ABB PM150V08 3BSE009598R1
ABB 3BSE011181R1
ABB PM511V16
ABB PM511V16 3BSE011181R1
ABB PM630
ABB 3BSE005831R1
ABB PM632
ABB PM632 3BSE005831R1
ABB 3BSE008062R1
ABB PM633
ABB PM633 3BSE008062R1
ABB 3BSE010535R1
ABB PM645B
ABB PM645B 3BSE010535R1
ABB 3BDH001000R0005
ABB PM902F
ABB PM902F 3BDH001000R0005
ABB DSPC170
ABB DSPC172
ABB DSPC172H
ABB 3BSE005461R1
ABB DSPC174
ABB DSPC174 3BSE005461R1
ABB DSPC406
ABB 57310303-F/3
ABB DSPC454
ABB DSPC454 57310303-F/3
ABB 3BHB003149P104
ABB 3BHB003149P201
ABB GVC707AE01
ABB 3BHB003154R0101
ABB 3BHB003154R0101 3BHB003149P104
ABB 3BHB003154R0101 3BHB003149P201
ABB 3BHB003154R0101 GVC707AE01
3BHB003154R0101 GVC707AE01 3BHB003149P104
3BHB003154R0101 GVC707AE01 3BHB003149P201
3BHB003154R0101 GVC707AE01 3BHB003149P201 3BHB003149P104
ABB 3BHB003688R0101
ABB 3BHB003689
ABB 3BHB003152P104
ABB 3BHB003152P201
ABB GVC700AE01
ABB 3BHB004027R0101
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