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

WANG Qiang; YUE Yuan-shao; WANG Tian-shi; LIU Xiao-qin

doi:10.3969/j.issn.0372-2112.2018.12.034

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

更新时间：2025-07-16

- A Single-Phase Full-Bridge Three-Level Energy-Saving Inverter
- Acta Electronica Sinica Vol. 46, Issue 12, Pages: 3068-3072(2018)
- 作者机构：
  
  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
  3. 辽宁石油化工大学信息与控制工程学院,辽宁,抚顺,113001
  4. 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
- 作者简介：
- 基金信息：
- DOI：10.3969/j.issn.0372-2112.2018.12.034
  CLC： TM464
- Published Online：25 December 2018，
  
  Published：2018
- 稿件说明：
移动端阅览
WANG Qiang, YUE Yuan-shao, WANG Tian-shi, et al. A Single-Phase Full-Bridge Three-Level Energy-Saving Inverter[J]. Acta Electronica Sinica, 2018, 46(12): 3068-3072.
DOI：

WANG Qiang, YUE Yuan-shao, WANG Tian-shi, et al. A Single-Phase Full-Bridge Three-Level Energy-Saving Inverter[J]. Acta Electronica Sinica, 2018, 46(12): 3068-3072. DOI： 10.3969/j.issn.0372-2112.2018.12.034.

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.

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.

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