A novel cascaded multilevel converter drive system with minimum number of separated DC sources

Author

Sirisukprasert, Siriroj ; Sheng Lai, Jih- ; Hua Liu, Tim

Author_Institution

CPES, Virginia Polytech. Inst. & State Univ., Blacksburg, VA, USA

Volume

3

fYear

2001

fDate

6/23/1905 12:00:00 AM

Firstpage

1346

Abstract

This paper proposes a novel cascaded multilevel converter for induction motor drives. By using systematic analysis, a novel multilevel converter with minimum number of separated DC sources has been developed. This multilevel converter requires only 50% of the number of DC sources required in conventional five-level cascaded converters. In addition, the three-phase output voltages of this converter can be easily balanced because they are synthesized by using the same DC sources. The harmonic reduction method is proposed to eliminate both the 5th and 7th harmonic. Simulation results show that the proposed converter can drive an induction motor with satisfactory speed responses. Moreover, the proposed method is easily realized. As a result, it can be applied in high power drive systems

Keywords

harmonic distortion; harmonics suppression; induction motor drives; power conversion harmonics; power supplies to apparatus; 5th harmonic elimination; 7th harmonic elimination; cascaded multilevel converter drive system; harmonic reduction method; induction motor drives; separated DC sources minimisation; speed responses; three-phase output voltages; AC motors; Circuit synthesis; Diodes; Flexible AC transmission systems; Induction motor drives; Induction motors; Power conversion; Power electronics; Switches; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Electronics Specialists Conference, 2001. PESC. 2001 IEEE 32nd Annual

Conference_Location

Vancouver, BC

ISSN

0275-9306

Print_ISBN

0-7803-7067-8

Type

conf

DOI

10.1109/PESC.2001.954307

Filename

954307