Operation of a three phase cascaded H-bridge multilevel active rectifier under variable DC loads

Author

Venkat, Jakka ; Shukla, Anshuman

Author_Institution

Dept. of Electr. Eng., Indian Inst. of Technol. Bombay, Mumbai, India

fYear

2014

fDate

16-19 Dec. 2014

Firstpage

1

Lastpage

6

Abstract

Cascaded H-bridge (CHB) multilevel converters have found extensive high power applications due to their modular structure, simpler layout, and reduced number of components. The reported work proposes a vector control method for a three phase CHB active rectifier (CHBAR) to offer the desired voltages across its dc-link capacitors and the prerequisite power factor at the grid terminals under variable load conditions. A phase shifted pulse width modulation scheme is used to generate the gate signals for the rectifier. The required reference signals for the modulation scheme are obtained by using the vector control. The validity of the proposed control is verified using the theoretical and simulation analysis.

Keywords

PWM power convertors; PWM rectifiers; bridge circuits; cascade networks; power factor; reactive power control; CHB multilevel converter; CHBAR; DC-link capacitor; gate signal; grid terminal; high power application; modular structure; phase shifted pulse width modulation scheme; prerequisite power factor; reactive power control; reference signal; three phase cascaded H-bridge multilevel active rectifier; variable DC load; variable load condition; vector control method; Capacitors; Load modeling; Pulse width modulation; Reactive power; Rectifiers; Voltage control; Cascaded H-bridge converter; phase shifted pulse width modulation; vector control;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Electronics, Drives and Energy Systems (PEDES), 2014 IEEE International Conference on

Conference_Location

Mumbai

Print_ISBN

978-1-4799-6372-0

Type

conf

DOI

10.1109/PEDES.2014.7042153

Filename

7042153