Affiliation of Author(s):电子信息工程学院

Journal:IET POWER ELECTRONICS

Key Words:invertors bridge circuits reliability inductors bridge-type inverters dead-time effect elimination reliability improvement conversion efficiency dual-buck inverter input voltage utilisation rate half-bridge-type inverters inductors buck inverter topology operating circuit buck circuit high-frequency condition power 1 kW

Abstract:A new buck inverter without shoot-through problem is presented and analysed in this study. The traditional dual-buck inverter has been proposed to solve the shoot-through problem of bridge-type inverters, eliminate the dead-time effect and improve the reliability along with the conversion efficiency. However, the existing dual-buck inverter is prone to result in the problem of circulation and low utilisation rate of input voltage in half-bridge-type inverters. Besides, two or even four inductors are needed in the traditional dual-buck inverter configuration, which leads to a larger volume and weight. In this study, single inductor and single power are used in the proposed buck inverter topology. The operating circuit is equivalent to a buck circuit during each mode, and only one switch works in high-frequency condition at any time. A 1-kW prototype is established and tested in this study. The results of simulation and experiments verify the validity of the theoretical analysis, along with the good performance in situations where small size, high conversion efficiency and high stability are required.

ISSN No.:1755-4535

Translation or Not:no

Date of Publication:2017-10-27

Co-author:雷鸿,嵇保健,Li, Longchun,Wang, Siyu

Correspondence Author:Hong Feng