Abstract
Considered the ripple ratio of the input sine current when crossing zero current'this paper has made a detailed analysis of the switch period in a single sampling period of the PWM rectifier whose current is crossing zero current, and has analyzed the influences of the switch period, the frequency of power supply, the system inductance, the network voltage, the given power supply and the DC reference voltage on the ripple ratio of the input sine current which is crossing zero current in a single sampling period of the PWM rectifier ' and has determined the minimum value of the AC reactor of the PWM rectifier. After the simulations under different inductance value were done on the Saber simulation platform, different waves of system DC output voltage and input current were acquired. The simulation results verified the accuracy and feasibility of the proposed method, which is of great value on the engineering application in the design of three-phase reversible PWM rectifier.
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