In the part of rectifier, good performance of 3-phase active power factor correction was complete by using three isolate single-phase APFC circuits. Applying power factor controller MC34262, only a little additional circuit were needed.

• 在整流部分中,利用单相功率因子校正技术实现了三相功率因子校正,用三个单相功率因子控制芯片MC34262完成了三相功率因子校正部分,外围电路少,功率因数高,结构简单。