摘要
提出一种脉冲均匀调制功率控制串联谐振式DC/AC逆变器,对其开关进行了均匀对称间隙控制。逆变器承担逆变和功率调节两项任务,并始终工作在负载谐振状态,开关管工作在近零电流开通和关断(ZCS)状态。与脉冲密度调制(PDM)功率控制DC/AC逆变换器相比,具有输出电流平稳,控制脉冲分布均匀、电流连续等优点,即使在轻载情况下,也能使逆变器输出电流波动变小。
A novel PSM(Pulse-Symmetrical Modulated) power control serial-resonant DC/AC inverter is proposed. The main switches of the inverter are controlled according to the PSM and work in shutting off and switching on at ZCS. In this way, the inverter executes both power converting and power adjusting, and always works at resonance with the same pace of the load.This PSM serial-resonant DC/AC inverter performs better than PDM(Pulse-Density Modulated) power control DC/AC inverter by ways of smooth power output, symmetrical pulse distribution, continuous output current while very little fluctuation even in the condition of light load and so forth.
出处
《电力电子技术》
CSCD
北大核心
2004年第4期43-45,共3页
Power Electronics
关键词
逆变器
谐振
脉冲
软开关
inverter
resonance
pulse/ soft switching
