标题：A Modified Phase Disposition PWM Method for Novel Z-Source Hybrid Clamped Three-level Inverter
作者：Wang, Weisheng; Chen, Jiabin; Chen, Alian; Chai, Jin; Xing, Xiangyang; Zhang, Chenghui
作者机构：[Wang, Weisheng; Chen, Jiabin; Chen, Alian; Chai, Jin; Xing, Xiangyang; Zhang, Chenghui] Shandong Univ, Sch Control Sci & Engn, Jinan, Peoples R China 更多
会议名称：8th IEEE International Power Electronics and Motion Control Conference (IPEMC-ECCE Asia)
会议日期：MAY 22-26, 2016
来源：2016 IEEE 8TH INTERNATIONAL POWER ELECTRONICS AND MOTION CONTROL CONFERENCE (IPEMC-ECCE ASIA)
关键词：Z-source; hybrid clamped; three-level; neutral-point voltage balance
摘要：To combine the voltage-buck and voltage-boost capabilities of Z-source inverter and the advantages of three-level inverter in high power applications, a novel Z-source hybrid clamped (Z-HC) three-level topology with one isolated DC voltage source is proposed in this paper. Through the analysis of its operation states and the charging and discharging loops of clamping capacitors, a modified phase disposition modulation method in which phase current and phase voltage are introduced to generate PWM signals is designed to reduce the switching losses by minimizing commutation count. Besides realizing the neutral-point voltage balance automatically, for Z-HC inverter, only one shoot-through state is desired to boost voltage that makes shoot-through signals inserted easily. The designed inverter has been tested in experimentation using a laboratory prototype to prove the validation with the proposed modulation method.