Development of quasi 24-step voltage source inverter

Author

Kawasugi, K. ; Masukawa, Shigeo

Author_Institution

Dept. of Electr. & Electron. Eng., Tokyo Denki Univ., Tokyo, Japan

fYear

2012

fDate

21-24 Oct. 2012

Firstpage

1

Lastpage

4

Abstract

A new method for reducing harmonics involved in output voltages of a three-phase voltage source inverter is proposed. It is applied to the conventional 6-step inverter with a three-phase autotransformer. By injecting harmonics to the neutral point of the autotransformer from an auxiliary circuit, output voltages of the proposed inverter can be almost the same as a conventional 24-step inverter. In this paper, circuit performances and output voltage waveforms are discussed, and the optimum parameters are determined by taking effect of harmonic reductions. Then, characteristics of the proposed inverter can be clarified by simulation results.

Keywords

autotransformers; harmonics suppression; invertors; 6-step inverter; harmonic reduction method; output voltage waveforms; quasi24-step voltage source inverter; three-phase autotransformer; three-phase voltage source inverter; Capacitors; Harmonic analysis; Harmonic distortion; Inverters; Performance evaluation; Simulation; Switches; harmonic injection; harmonics; inverter; multi-parallel connection; multi-sequential connection;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical Machines and Systems (ICEMS), 2012 15th International Conference on

Conference_Location

Sapporo

Print_ISBN

978-1-4673-2327-7

Type

conf

Filename

6401741