The basic conception and the relationship of power factor, current harmonics and EMI for SCR(Silicon Controlled Rectifier) and SMR(Switch Mode Rectifier) at different stage are described.

• 本文对不同应用阶段的可控硅相控整流器,高频开关型整流器中功率因数、电流谐波、电磁兼容性等指标的基本概念及其相关性做了阐述。