摘要
针对传统桥式整流Boost功率因数校正电路中MOSFET场效应管工作在高频率下损耗过高这个问题设计了一种拓扑结构,通过PWM控制器UC3854的模拟调制将输入交流电转换为直流高压,采用额外添加优化结构的辅助回路的方法,使其在功率开关管导通关断过程中利用储能元件谐振的原理实现零电压操作。使用仿真软件SIMEtrix对电路进行测试,结果表明,该电路在输入市网交流电220 V 50 Hz情况下输出电压稳定保持在400 V,输出功率为250 W,主开关管与辅助开关管均实现了工作过程中的零电压操作(ZVS),符合设计要求。
Aiming at the problem of high loss of MOSFET in traditional bridge rectifier Boost Power Factor Correction(PFC) circuit at high frequency,a topology structure is designed.The input AC is converted to DC high voltage by the analog modulation of PWM controller UC3854,and the optimized auxiliary circuit is added.The principle of energy storage element resonance is used to realize zero-voltage operation in the process of power switch on and off.The test results of the circuit by SIMEtrix show that the output voltage of the circuit is stable at 400 V and the output power is 250 W when the input AC power is 220 V and 50 Hz,and the ZVS operation of the main switch and auxiliary switch is realized,which meets the design requirements.
作者
郝小聿
安永泉
HAO Xiaoyu;AN Yongquan(Engineering and Technology Research Center of Shanxi Provincial for Optical-Electric Information and Instrument,North University of China,Taiyuan 030051,China)
出处
《电子设计工程》
2022年第4期143-146,151,共5页
Electronic Design Engineering
关键词
功率因数校正
零电压开关
辅助回路
整流
UC3854
Power Factor Correction(PFC)
Zero-Voltage Switch(ZVS)
auxiliary circuit
rectifier
UC3854
