摘要
设计了带功率因数校正的单端多路反激式开关电源,在主电路的设计中重点进行了高频变压器的计算,包括电感量的计算、磁芯的选择以及气隙的计算等。功率因数校正采用SA7527集成控制器,消除电流谐波。仿真结果表明,输出电压稳定,并且输入电流谐波含量减小,功率因数得到了提高。
Multiple output single-ended flyback switching power with high power factor is designed.The design of main circuit is focused on the calculations of high-frequency transformer including the calculation of inductance,core selection and the calculation of air gap.Power factor correction technique uses SA7527 integrated controller to eliminate current harmonics.Simulation results show that the output voltage keeps stable,input current harmonic content decreases,and the power factor is improved.
出处
《山西科技》
2012年第5期90-92,共3页
Shanxi Science and Technology
关键词
功率因数校正
反激式开关电源
谐波
高频变压器
power factor correction
flyback switching power supply
harmonic
high-frequency transformer
