新型六开关两倍电压增益五电平逆变器  

Novel Six-switch Five-level Inverter with Double-voltage-gain

作　　者：李善寿[1] 耿家乐 叶伟 方潜生[1] 朱世璠 LI Shanshou;GENG Jiale;YE Wei;FANG Qiansheng;ZHU Shifan(Key Laboratory of Intelligent Building&Building Energy Saving,Anhui Jianzhu University,Hefei 230022,China;Anhui Nari-Jiyuan Power Grid Technology Co.,Ltd.,Hefei 230088,China)

机构地区：[1]安徽建筑大学智能建筑与建筑节能安徽省重点实验室,合肥230022 [2]安徽南瑞继远电网技术有限公司,合肥230088

出　　处：《高电压技术》2023年第4期1574-1581,共8页High Voltage Engineering

基　　金：国家自然科学基金(61901006);博士科研启动项目(2020QDZ40)。

摘　　要：倍压多电平逆变拓扑具有自主升压和多电平输出的突出优点。提出了一种新型六开关两倍压增益五电平逆变拓扑,该拓扑由两个半桥单元和一个开关电容单元组成,通过载波层叠调制策略可以实现直流输入电源与电容器分时串并联运行,从而实现电路的自主升压和五电平输出电压波形。通过对比分析现有倍压多电平逆变拓扑,所提出的新型两倍压增益五电平逆变拓扑具有使用开关器件数量少、电压应力低、调制策略简单等优点。实验测试结果证明了所提五电平逆变拓扑在不同工况下的可行性与有效性。The voltage-multiplying multi-level inverter has the outstanding advantages of autonomous boost and multilevel output.In this paper,a novel six-switch double-voltage-gain five-level inverter is proposed.The topology consists of two half-bridge units and a switched capacitor unit.Through the carrier cascade modulation strategy,the time-sharing series-parallel operation of DC input power supply and capacitor can be realized,so as to achieve the circuit's autonomous boost and five-level output voltage waveform.By comparing and analyzing the existing voltage-multiplying and multilevel inverter topologies,the proposed new five-level inverter topology with double-voltage-gain has the advantages of fewer components,simple modulation strategy,and low voltage stress.The experimental results verify the feasibility and effectiveness of the proposed five-level circuit under different working conditions.

关 键 词：多电平逆变器 电压增益 开关电容 载波层叠调制策略 电压应力 

分 类 号：TM464[电气工程—电器]