Single-phase full-bridge resonant DC-link soft-switching inverter

被引：0
|
作者：
Wang Q. [1 ]
Shan R.-X. [1 ]
Wang T.-S. [1 ]
Liu X.-Q. [1 ]
机构：
[1] College of Information and Control Engineering, Liaoning Shihua University, Fushun
来源：
Wang, Qiang | 2017年 / Editorial Department of Electric Machines and Control卷 / 21期
关键词：
Inverter; Resonant; Single switch; Soft-switching; Zero voltage;
D O I：
10.15938/j.emc.2017.03.006
中图分类号：
学科分类号：
摘要：
A single-phase full-bridge resonant DC-link soft-switching inverter was proposed to improve the efficiency and simplify the control method. When main switches in the inverter needed operating, the DC-link voltage decreased to zero via the single switch which controlling the resonance of the auxiliary circuit. Then all main switching devices in the inverter were operated under zero-voltage condition and auxiliary switching device was also operated under zero-voltage condition. The voltage across the DC-link inverter devices was limited to the input source voltage. Because the process of the resonant and the zero-voltage time was short, it could reduce the power loss and improve the efficiency by using the DC-source voltage. The operation principle was analyzed based on the equivalent circuits at different operation modes. The phase-plane analysis technique was established in order to study transient dynamics. The conditions of soft-switching and the process of parameter design were also achieved. A laboratory prototype was built. The experimental results demonstrate that soft-switching operation of all switching devices are realized. Therefore, the soft-switching inverter presented effectively reduces switching loss and improves efficiency. © 2017, Harbin University of Science and Technology Publication. All right reserved.
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页码：38 / 47
页数：9
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