电子学报 ›› 2018, Vol. 46 ›› Issue (12): 3068-3072.DOI: 10.3969/j.issn.0372-2112.2018.12.034

• 科研通信 • 上一篇    下一篇

单相全桥三电平节能逆变器

王强1,2, 岳远韶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:2017-06-13 修回日期:2017-09-25 出版日期:2018-12-25
    • 通讯作者:
    • 王强
    • 作者简介:
    • 岳远韶 男,1993年3月出生于江苏省徐州市,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:1216068881@qq.com;王天施 男,1970年1月出生于辽宁省法库县,博士,现为辽宁石油化工大学信息与控制工程学院副教授,主要研究方向为软开关变换器的电路拓扑及控制.E-mail:wts55@126.com;刘晓琴 女,1975年2月出生于辽宁省辽阳县,硕士,现为辽宁石油化工大学信息与控制工程学院副教授,硕士研究生导师,主要研究方向为软开关变换器的电路拓扑及控制.E-mail:qinbuluoge@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)

A Single-Phase Full-Bridge Three-Level Energy-Saving Inverter

WANG Qiang1,2, YUE Yuan-shao1,2, 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:2017-06-13 Revised:2017-09-25 Online:2018-12-25 Published:2018-12-25
    • 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: 随着开关频率的提高,单相全桥逆变器处于硬开关切换时的开关损耗也会明显增大,将导致逆变器处于低效率运行.为解决这一问题,提出了一种单相全桥三电平节能逆变器.通过设置辅助换流电路,利用谐振使主开关并联的电容的电压下降到零,主开关可实现零电压切换,而且在换流过程中,两组双向辅助开关可分别实现零电压切换和零电流切换.分析了电路的工作状态,实验结果表明主开关和辅助开关都能实现软切换.因此该单相全桥三电平逆变器可实现高效率运行.

关键词: 三电平, 逆变器, 零电压开关, 零电流开关, 双向开关

Abstract: When switching frequency increases, the switching losses in the single-phase full-bridge hard-switching inverter will also increase significantly so that the inverter is in low efficiency. In order to solve this problem, a single-phase full-bridge three-level energy-saving inverter is proposed. By resonance in the auxiliary commutation circuit, the voltage across capacitors in parallel with the main switches decreases to zero and the main switches could achieve zero-voltage switching. Furthermore, two groups of bidirectional auxiliary switches can achieve zero-voltage switching and zero-current switching respectively in the process of commutation. The working state of the circuit is analyzed. Experimental results show that the main switch and auxiliary switch can achieve soft switching. Therefore, the single-phase full-bridge three-level inverter can operate in high efficiency.

Key words: three-level, inverter, zero-voltage switching, zero-current switching, bidirectional switch

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