Improvement on electromagnetic compatibility of voltage source PWM rectifier based on chaotic SVPWM

摘要

In this paper, a novel chaotic space vector pulse width modulation (SVPWM) scheme is applied to PWM rectifier. Such an approach takes advantage of continuous power spectrum of chaotic sequence to suppress the peaky switching harmonics, and then fundamentally restrains electromagnetic interference(EMI) caused by harmonics. Compared with the conventional fixed-frequency PWM rectifier, the proposed scheme can significantly reduced harmonic peak of output voltage at one or multiples switching frequency, besides, the operating performances at transient and steady state are not affected. MATLAB / SIMULINK simulation results verify the validity.