Resonant DC Link Inverter with a Single Auxiliary Switch

WANG Qiang; LIU Yan-song; CHEN Xiang-xue; WANG Tian-shi; LIU Xiao-qin

doi:10.3969/j.issn.0372-2112.2014.11.030

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Resonant DC Link Inverter with a Single Auxiliary Switch

更新时间：2025-07-16

- Resonant DC Link Inverter with a Single Auxiliary Switch
- Acta Electronica Sinica Vol. 42, Issue 11, Pages: 2321-2324(2014)
- 作者机构：
  
  辽宁石油化工大学信息与控制工程学院,辽宁,抚顺,113001
- 作者简介：
- 基金信息：
  
  National Natural Science Foundation of China (No.51207069);General Program of Postdoctoral Science Foundation of China (No.2013M531349);Research Project of Education Department of Liaoning Province (No.L2013146);Funded by Postgraduate Science Research Program of Jiangsu Province (No.1301105C)
- DOI：10.3969/j.issn.0372-2112.2014.11.030
  CLC： TM464
- Published：2014
- 稿件说明：
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WANG Qiang, LIU Yan-song, CHEN Xiang-xue, et al. Resonant DC Link Inverter with a Single Auxiliary Switch[J]. Acta Electronica Sinica, 2014, 42(11): 2321-2324.
DOI：

WANG Qiang, LIU Yan-song, CHEN Xiang-xue, et al. Resonant DC Link Inverter with a Single Auxiliary Switch[J]. Acta Electronica Sinica, 2014, 42(11): 2321-2324. DOI： 10.3969/j.issn.0372-2112.2014.11.030.

摘要

为实现一种结构简单、控制方便、高效率、高功率密度的逆变器

提出了一种新型谐振直流环节软开关逆变器的拓扑结构.通过在传统硬开关逆变器的直流环节添加辅助谐振单元

使直流母线电压周期性地归零

可以实现逆变桥主开关器件的零电压开关

而且辅助开关器件可以实现零电流开通和零电压关断.此外

其辅助谐振单元只有一个辅助开关器件

所以该逆变器控制相对简单

硬件成本低.对其工作原理进行分析

给出不同工作模式下的等效电路图和软开关的实现条件.制作一个1kW的实验样机

通过实验结果验证该软开关逆变器的有效性.

Abstract

A resonant DC link soft-switching inverter was proposed to realize an inverter which has a simple topology

an easy control strategy

high efficiency and high power density.Auxiliary resonant unit was added to DC link of conventional inverter to make DC-bus voltage decrease to zero periodically

which realized zero-voltage operation of all switching devices in inverter.Furthermore

the switching device in the auxiliary resonant unit could be turned on under zero-current and turned off under zero-voltage.In addition

because only one auxiliary switch was in the auxiliary resonant unit

control strategy was relatively simple and cost of hardware was lower.The operation principle was analyzed.The equivalent circuits at different operation modes and conditions for realization of soft-switching were presented.A 1kW laboratory prototype had been built.Experimental results were proposed to confirm validity of soft-switching inverter presented.

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