摘要
文中介绍了谐波存在的危害和APFC控制常用的专用集成芯片UC3854的内部结构及其工作原理,论述了有源功率因数校正的基本工作原理及其控制方式和优越的性能,给出了功率因数和THD的定义及UC3854典型应用电路和实测结果。
This paper introduces the harm caused by low power factor and harmonics, explaines the definitions of power factor and THD, dissertates the basic principle and the control methods of active power factor correction, introduces interior structure and working principles of UC3854-an IC used only on APFC＇s control, explains typical circuit of UC3854 and testing result, dissertates its ascendant capability.
出处
《通信电源技术》
2007年第2期35-37,共3页
Telecom Power Technology
