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DSP Control of Three Phase Voltage Source PWM Rectifier

Zhengxi Li

Abstract

The work principle of three phase voltage source PWM rectifiers was described,and the math model of system in the synchronization rotating coordinates by the AC current vector of PWM rectifier was deduced.A novel current feed-forward decoupled control algorithm was proposed,and the double loop control system was designed in detail based on this algorithm.A DSP digital experimental system was constituted with the TMS320LF2407A,and the experiment result was given.The experiment indicates that the PWM rectifier can achieve a sinusoidal current with unit power factor,a steady DC voltage,and a fast dynamic response.

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Available abstract

Key concepts: PWM rectifier, Rectifier (neural networks), Pulse-width modulation, Control theory (sociology), Digital signal processing, Peak inverse voltage, Power factor, Three-phase