A driving device, a rectifier bridge and a motor drive control system

Abstract

The invention discloses a driving device, a rectifier bridge and a motor dragging control system. The device comprises: a saddle wave generating unit (1), a signal extracting unit (2) and a driving signal generating unit (3); wherein, the saddle The wave generation unit (1) is used to process the three-phase power supply to be rectified to obtain the required saddle wave signal; the signal extraction unit (2) is used to extract the required synchronization from the saddle wave signal signal and phase-shifting signal; the driving signal generation unit (3), used to process the synchronous signal and the phase-shifting signal to obtain the required driving signal to drive the three-phase power supply A rectifier bridge (8) for rectification. The solution of the present invention can overcome the defects of complex results, high control difficulty and high cost in the prior art, and realize the beneficial effects of simple structure, low control difficulty and low cost.

Description

technical field [0001] The invention belongs to the technical field of electronic circuits, and in particular relates to a drive device, a rectifier bridge and a motor drive control system, a rectifier soft start circuit, a rectifier bridge with the rectifier soft start circuit, and a motor drive control system with the rectifier bridge Control System. Background technique [0002] AC motor drive (speed control technology of A.C. drive), can make the AC motor run at different speeds by changing the relevant electrical parameters of the AC motor, referred to as AC speed regulation. In the AC drive control system, there are many ways to realize the three-phase rectification circuit, such as three-phase non-controlling, three-phase full-controlling and other rectification schemes. However, rectification schemes such as three-phase uncontrolled and three-phase full control have complex circuit structures, complex rectification control algorithms, and high costs. [0003] In th...

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Problems solved by technology

[0004] The object of the present invention is to provide a driving device, a rectifier bridge and a motor drag control system to solve the problem of complex structure of the driving device in the rectification schemes such as three-phase no control and three-phase full control in the prior art. , to achieve the effect of simplifying the structure

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