电子学报 ›› 2019, Vol. 47 ›› Issue (3): 764-768.DOI: 10.3969/j.issn.0372-2112.2019.03.035

• 科研通信 • 上一篇    下一篇

辅助电路与主开关并联的单相全桥节能逆变器

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:2017-06-22 修回日期:2017-09-26 出版日期:2019-03-25
  • 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 Energy-Saving Inverter with Auxiliary Circuits in Parallel with Main Switches

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:2017-06-22 Revised:2017-09-26 Online:2019-03-25 Published:2019-03-25

摘要: 为了改善逆变器的性能,提出了一种辅助电路与主开关并联的单相全桥节能逆变器.逆变器采用受限单极式正弦脉宽调制(Sinusoidal Pulse Width Modulation,SPWM)方法,在每个开关周期,只需要控制1个主开关和1个辅助开关的切换,辅助开关可以采用固定占空比控制,而且不需要设定谐振电流阈值来控制辅助开关.在每个开关周期的换流过程中,需要切换的主开关所并联的谐振电容的电压能变化到零,主开关能实现零电压软开通.辅助电路中无器件直接串联在直流母线上,可有效降低辅助电路通态损耗.分析了电路工作原理,实验结果表明主开关和辅助开关都实现了软切换.因此该拓扑能有效降低开关损耗和提高逆变器效率.

关键词: 逆变器, 谐振, 开关损耗, 零电压开关, 零电流开通

Abstract: In order to improve performance of the inverter,a single-phase full bridge energy-saving inverter with auxiliary circuits in parallel with main switches is proposed.Limited monopole SPWM(Sinusoidal Pulse Width Modulation) is applied in the inverter.Only one main switch and one auxiliary switch need be controlled in every switching period.The duty cycle of the auxiliary switch is constant.Setting threshold of resonant current need not be designed to control the auxiliary switch.During the process of commutation in every switching period,the voltage across the resonant capacitor in parallel with the main switch decreases to zero and zero-voltage turning-on of the main switch can be achieved.All the components in the auxiliary circuit are not in series with DC(Direct current) bus,which can effectively reduce the conduction loss of auxiliary circuit.The working principle is analyzed in detail,and the experimental results show that the main switch and auxiliary switch can realize soft-switching.Therefore,the topology can effectively reduce the switching losses and improve efficiency of the inverter.

Key words: inverter, resonant, switching loss, zero-voltage switching, zero-current turning-on

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