A control method for a three-phase pwm rectifier suitable for grid waveform distortion
A waveform distortion and control method technology, applied in the direction of converting AC power input to DC power output, electrical components, output power conversion devices, etc., can solve problems such as power grid imbalance, PWM rectification faults, and non-characteristic harmonics
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[0034] Such as figure 1 As shown, a schematic diagram of the topology structure of a three-phase PWM rectifier according to an embodiment of the present invention, wherein, u a , u b , u c and ia i b i c Respectively are the three-phase grid voltage and three-phase current detection value of the rectifier access point; L a , L b , L c is the filter inductance on the input side of the rectifier, and the three-phase parameters are symmetrical; R a , R b , R c is the equivalent resistance of the filter inductor; R L is the equivalent resistance of the load. Based on KVL, the transient equation of the equivalent circuit of the rectifier can be listed:
[0035] u ia = u a - L a ( ...
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