标题：Improved transformerless dual buck inverters with buffer inductors
作者：Zhou, Liwei ;Gao, Feng
作者机构：[Zhou, Liwei ;Gao, Feng ] School of Electrical Engineering, Shandong University, Jinan, China
会议名称：31st Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2016
会议日期：20 March 2016 through 24 March 2016
来源：Conference Proceedings - IEEE Applied Power Electronics Conference and Exposition - APEC
关键词：buffer inductor; common mode voltage; dual buck topology; reverse recovery
摘要：In an inversion system, high reliability is one of the main targets pursuing. Some problems will threaten the reliability of the system, such as the shoot through issue and the failure of reverse recovery. The dual buck inverters can solve the above problems without adding dead time but the low magnetic utilization increases the volume and weight of the system. This paper firstly reviews the traditional dual buck topologies and a single inductor dual buck inverter which can make full use of the inductance. Then a kind of H3 dual buck phase leg with buffer inductor is proposed to improve the reliability of the MOSFET inverter. The novel method maintains the dual buck topologies' advantage of high reliability and can make full use of the inductance. Also, compared to the single inductor dual buck topology, the novel method can achieve lower conducting loss and simpler controlling strategy. Finally, the simulation and experimental results verified the theoretical analysis. © 2016 IEEE.