互补PWM控制的双开关电容新型切换开关研究  

Double Switched Capacitor Transfer Switches Based on Complementary PWM Control

作　　者：唐圣学[1,2] 刘亚敬 陈丽[1,2] 姚芳[1,2] TANG Sheng-xue;LIU Ya-jing;CHEN Li;YAO Fang(State Key Laboratory of Reliability and Intelligence of Electrical Equipment,Hebei University of Technology,Tianjin 300130,China)

机构地区：[1]河北工业大学省部共建电工装备可靠性与智能化国家重点实验室,天津300130 [2]河北工业大学河北省电磁场与电器可靠性重点实验室,天津300130

出　　处：《电力电子技术》2019年第5期93-96,共4页Power Electronics

基　　金：国家自然科学基金(51477040);河北省自然科学重点基金(E2017202284)~~

摘　　要：为了减小电流变化率应力冲击,提出了一种双开关电容电路并联的新型切换开关。给出了双开关电容电路拓扑结构及其互补脉宽调制(PWM)控制技术,分析了工作和控制原理。提出了基于该切换开关的新型固态切换开关。所提开关等值阻抗受开关频率反向控制,并且可有效降低功率器件应力。探讨了新型固态开关在交流电网故障电流限制、微电网模式切换中的应用,可有效限制交流电网故障电流,实现微电网模式平滑切换。仿真和实验结果验证了新型混合固态切换开关的有效性、可行性。In order to reduce current rate of change stress,a double switched capacitor circuit based on complementary pulse width modulation(PWM)technique is proposed.The topology and its complementary PWM control technology are presented in detail and the operating and control theory are analyzed.Then,a new solid-state switch based on the double switched capacitor circuit is presented.The proposed switches can control its equivalent impedance with switching frequency and reduce the stress of power devices.The proposed switches have been used for limiting the short current of AC grid and transferring the operating mode of micro-grid which can reduce effectively the fault current and implement the smoothly transferring of micro-grid operating modes.The simulation and experimental results verify the effectiveness and feasibility of the new hybrid solid-state switch.

关 键 词：开关电容 互补脉宽调制控制 固态开关 

分 类 号：TM151.3[电气工程—电工理论与新技术]