摘要
针对现有的零电压软开关DC/DC变换器存在环流损耗大、占空比丢失严重、软开关范围窄和高频二极管寄生振荡严重等问题。设计了一种采用有限双极性PWM控制的零电压零电流软开关变换器,可在宽输入和宽负载范围内实现超前管零电流开通、零电压关断,滞后管零电流开关。采用RCD缓冲电路,有效抑制了高频整流二极管寄生振荡。相对于传统的零电压软开关变换器,具有环流损耗低、占空比丢失少和软开关范围宽等优点。
In view of problems with existing zero voltage soft switching DC/DC converters,such as large circulation loss,serious loss of duty cycle,narrow soft switching range and severe parasitic oscillation of high-frequency diodes,this paper designed a zero voltage zero current switching converter under limited bipolar PWM control.The converter could realize zero current turn-on and zero voltage turn-off for the leading tube and zero current switching for the lagging tube over a wide range of input and load.A RCD buffer circuit was adopted for effective suppression of parasitic oscillation of the high-frequency rectifier diode.Compared with the traditional zero voltage soft switching converter,the proposed converter had such advantages as low circulation loss,low duty cycle loss,and a wide range of soft switching.
作者
付强
张一鸣
高俊侠
王海涛
高星乐
刘洁
Fu Qiang;Zhang Yiming;Gao Junxia;Wang Haitao;Gao Xingle;Liu Jie(Information Department,Beijing University of Technology,Beijing 100124,China)
出处
《电气自动化》
2019年第3期19-21,共3页
Electrical Automation
基金
中科院战略先导科技专项(XDB06000000)—海斗深渊区可控源海洋电磁发射装备关键技术研究专项(XDB06030204)资助
