Harmonic reduction in a single-switch, three-phase boost rectifier with high order harmonic injected PWM

摘要

A single-switch three-phase boost rectifier cannot be pushed to high power levels due to high total harmonic distortion (THD). An approach employing high order harmonic injected PWM is proposed to reduce the harmonic content to meet the IEC 555-2 (A) standard for a 5-10 kW power application without significantly increasing the output. The results are verified by a prototype converter operating at 800 V/6 kW with a 3/spl times/220 V input.