高效功率转换控制策略  

Study on High-Efficiency Power Conversion Strategy

作　　者：余胜清 Yu Shengqing

机构地区：[1]湖北省核工业地质局,湖北孝感432100

出　　处：《工业控制计算机》2021年第12期150-152,共3页Industrial Control Computer

摘　　要：提出了一种新的功率转换方案,可实现从低频到高频段的大电流输出。为了扩大功率输出范围,在高频脉冲宽度调制(PWM)控制的基础上,采用了工频脉冲密度调制(PDM)技术。实验结果表明,在低功率到高功率范围内,控制系统的功率转换效率超过93%,验证了控制方案的可靠性。This paper presents a novel power conversion strategy,which can operate from low-frequency to high-frequency to produce high current output.A dual-mode control scheme based on high-frequency pulse width modulation(PWM),in synchronization with the utility frequency positive and negative half-cycles,and pulse density modulation(PDM)is proposed to extend the output power regulation.Experimental results are given to verify the operating principles of the proposed power conversion circuit and to evaluate its power conversion efficiency over 93%.

关 键 词：功率转换 脉冲密度调制(PDM) 脉冲宽度调制(PWM) 

分 类 号：TM924.01[电气工程—电力电子与电力传动]