Design and implementation of novel current control techniques for single and three phase PWM boost rectifiers.

摘要

A novel unipolar pulse width modulated (PWM) current control technique is examined for single and three phase unity fundamental power factor (UFPF) utility rectifier topologies. A comparison between a novel PWM averaging current control technique and the proportional-integral (PI) current control schemes for single and three phase utility rectifiers is presented. The behaviour of the proposed current control scheme is analyzed under both single phase and three phase operating conditions.;An investigation through comprehensive single and three phase simulations indicates the advantages of the proposed current control technique over the PI control scheme, such as stable steady-state operation, quick transient responses with minimal overshoots, and an inherent tolerance to system disturbances such as DC offsets. Analog realization of the current controllers are developed and implemented based on theoretical and simulation results. The experimental results demonstrate excellent performance of the controllers and present good agreement between the simulations and experiments.