A novel voltage balance method for cascaded H-bridge rectifier

Author

Xinghua, Tao ; Yongdong, Li ; Min, Sun

Author_Institution

Dept. of Electr. Eng., Tsinghua Univ., Beijing, China

fYear

2010

fDate

1-3 Sept. 2010

Firstpage

1

Lastpage

5

Abstract

In this paper, a novel algorithm is introduced for DC-link voltage balancing in cascaded H-bridge rectifier. With this method, the modulation index of each cell can be regulated by surveying not only the total DC voltage but also each cell´s DC voltage, therefore the modulation index of each cell can match their individual actual active power respectively and achieve the DC voltages balance. Furthermore, the steady area of such cascaded converter is discussed and the relationship of the active power ratio of two cells and the modulation index is given. Simulation and experimental results show the proper operation of the proposed topology and the corresponding control strategy.

Keywords

PWM power convertors; PWM rectifiers; bridge circuits; voltage control; DC-link voltage balancing; active power; cascaded H-bridge rectifier; modulation index; voltage balance method; Converters; Indexes; Modulation; Rectifiers; Topology; Voltage control; Voltage measurement; Voltage balance method; cascaded H-bridge converter; transformerless;

fLanguage

English

Publisher

ieee

Conference_Titel

Vehicle Power and Propulsion Conference (VPPC), 2010 IEEE

Conference_Location

Lille

Print_ISBN

978-1-4244-8220-7

Type

conf

DOI

10.1109/VPPC.2010.5729222

Filename

5729222