Driving device, rectification bridge and motor dragging control system

Abstract

The invention discloses a driving device, a rectification bridge and a motor dragging control system. The device comprises a saddle wave generation unit (1), a signal extraction unit (2) and a drivingsignal generation unit (3), wherein the saddle wave generation unit (1) is used for processing a three-phase power supply to be rectifier to obtain a required saddle wave signal, the signal extraction unit (2) is used for extracting a synchronous signal and a phase shift signal, which are required, from the saddle wave signal, and the driving signal generation unit (3) is used for processing thesynchronous signal and the phase shift signal to obtain a required driving signal so as to drive a rectification bridge (8) for rectifying the three-phase power supply. With the device disclosed by the scheme, the defect of result complexity, large control difficulty, high cost and the like in the prior art can be overcome, and the beneficial effects of simple structure, small control difficulty and low cost are achieved.

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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