The voltage balance control for new generation of high power cascaded H-bridge rectifier

Author

Zhang, Guopeng ; Cheng, Hong ; Wang, Cong ; Xia, Zhichao

Author_Institution

Sch. of Mech. Electron. Inf. Eng., China Univ. of Min. & Technol. (Beijing), Beijing, China

fYear

2011

fDate

21-23 June 2011

Firstpage

1387

Lastpage

1391

Abstract

The control strategy of cascaded rectifier which is used as the first stage of a new generation cascaded line-frequency transformerless power converter is discussed in this paper. The circuit model of cascaded rectifier stage is simplified, and the mathematical model of cascaded rectifier stage is set up based on Single-Phase Rotating Frame. A balance strategy for DC link capacitor voltage of each cascaded cell by distributing the cell switching for the synthetic waveform is proposed. The simulation results indicate that this proposed strategy can balance the DC link capacitor voltage of every cell in better accuracy, and control the active or reactive power of the system more effectively.

Keywords

bridge circuits; power capacitors; power convertors; reactive power control; rectifiers; voltage control; DC link capacitor voltage; cascaded line-frequency; cell switching; circuit model; high power cascaded H-bridge rectifier; mathematical model; reactive power control; single-phase rotating frame; synthetic waveform; transformerless power converter; voltage balance control; Bridge circuits; Capacitors; Mathematical model; Pulse width modulation; Rectifiers; Switches; Voltage control; Cascaded rectifier; Single-Phase Rotating Frame; Switch distribution; Voltage balance;

fLanguage

English

Publisher

ieee

Conference_Titel

Industrial Electronics and Applications (ICIEA), 2011 6th IEEE Conference on

Conference_Location

Beijing

ISSN

pending

Print_ISBN

978-1-4244-8754-7

Electronic_ISBN

pending

Type

conf

DOI

10.1109/ICIEA.2011.5975804

Filename

5975804