“绿色”高频开关电源的控制方法  

The Control Algorithm of the Green High Frequency Switching Mode Power Supply

作　　者：张炳华[1] 

机构地区：[1]北京市电信规划设计院,北京100044

出　　处：《通信电源技术》2002年第3期5-9,共5页Telecom Power Technology

摘　　要：提出了一种新型的功率因数校正(PFC)电路,分析了准谐振PFC的工作原理,进而得到单相时变简化分析模型。采用改进的比例积分微分(PID)控制策略,提出了混合频率调制法,设计了相应的控制电路。仿真结果表明:准谐振PFC实现了零电流关断,功率因数高,谐波电流小,对周围环境的电磁干扰小;且开关电源的功耗小,动态特性好,负载范围宽,是真正意义上的“绿色”高频开关电源。研究成果对校正装置的实现具有积极的指导意义。It brings a new PFC circuit and analyzes the principle of the resonant PFC, thus get the simple model with single phase time change for analyse. With the updated PID control strategy, it presents the mix frequency moderation method and designs the control circuit accordingly. The emulation result shows resonant PFC can realize zero current shut down, high power factor, low resonant current and low EMI to the environment, and low power loss to the switch mode power supply, good dynamic feature, wide load range. It is the real green power supply. This result is magnificent to the realization of the corrective means.

关 键 词：“绿色”电源 准谐振 功率因数校正 零电流开关 控制方法 

分 类 号：TN86[电子电信—信息与通信工程]