电子学报 ›› 2019, Vol. 47 ›› Issue (12): 2653-2656.DOI: 10.3969/j.issn.0372-2112.2019.12.027

• 科研通信 • 上一篇    下一篇

新型单相全桥无源软开关逆变器

王强1,2, 王有政1,2, 王天施1,2, 刘晓琴1,2   

  1. 1. 辽宁石油化工大学信息与控制工程学院, 辽宁抚顺 113001;
    2. 辽宁石油化工大学石油化工过程控制国家级实验教学示范中心, 辽宁抚顺 113001
  • 收稿日期:2018-08-27 修回日期:2018-11-15 出版日期:2019-12-25
    • 通讯作者:
    • 王强
    • 作者简介:
    • 王有政 男,1997年3月出生于辽宁省本溪市,现为辽宁石油化工大学信息与控制工程学院硕士研究生,主要研究方向为软开关变换器的电路拓扑及控制.E-mail:18341314116@163.com
    • 基金资助:
    • 国家自然科学基金 (No.51207069); 辽宁省自然科学基金指导计划项目 (No.20170540586); 辽宁石油化工大学国家级科研项目培育基金 (No.2016PY-016)

Novel Single-Phase Full-Bridge Passive Soft-Switching Inverter

WANG Qiang1,2, WANG You-zheng1,2, WANG Tian-shi1,2, LIU Xiao-qin1,2   

  1. 1. College of Information and Control Engineering, Liaoning Shihua University, Fushun, Liaoning 113001, China;
    2. National Experimental Teaching Demonstration Center of Petrochemical Process Control, Fushun, Liaoning 113001, China
  • Received:2018-08-27 Revised:2018-11-15 Online:2019-12-25 Published:2019-12-25
    • Corresponding author:
    • WANG Qiang
    • Supported by:
    • National Natural Science Foundation of China (No.51207069); Natural Science Foundation of Liaoning Province  (Guide Plan) (No.20170540586); Scientific Research Cultivation Fund of Liaoning Shihua University (No.2016PY-016)

摘要: 为改善单相全桥逆变器的运行效率,设计出了一种新型单相全桥无源软开关逆变器,在每个开关周期的换流过程中,利用逆变器的低损耗辅助谐振电路,使开关器件实现软切换以节约电能.辅助谐振电路只含有电感、电容和二极管等无源器件,不会使逆变器的控制变复杂.此外,在逆变器处于死区状态下,负载电流可通过辅助电路进行续流,减小了死区状态对逆变器输出电流波形的不利影响.文中分析了电路的工作过程,在功率为3kW的单相样机上的实验结果表明开关器件能实现软开关,逆变器输出电流波形的畸变率得到了改善.因此,该拓扑结构对于研发高性能单相全桥逆变器具有重要参考价值.

关键词: 逆变器, 无源, 软开关, 零电流开通, 零电压关断

Abstract: A topology of novel single-phase full-bridge passive soft-switching inverter is proposed to improve conversion efficiency of the single-phase full-bridge inverter. During the commutation process of each switching cycle, the low-loss auxiliary resonant circuit of the inverter is used to save energy. There are some passive devices such as inductor, capacitor and diode, which cannot complicate the control strategy of the inverter. In addition, freewheeling of load current can be realized via the auxiliary circuit and the distortion ratio of output current waveforms of the inverter is reduced when the inverter is in the dead state. The operation process of the circuit is analyzed. The experiment is carried out on a 3kW one-phase laboratory prototype. Experimental results verify that the switching devices of the inverter can achieve soft-switching and the distortion ratio of output current waveform of the inverter is improved. Therefore, the topology has an important reference value for the research and development of high performance single-phase full-bridge inverter.

Key words: inverter, passive, soft-switching, zero-current turn-on, zero-voltage turn-off

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