A Method for Reducing Harmonics in Input Current of Double Connected Three-Phase Hybrid Rectifier without Input Transformers

Author

Masukawa, Shigeo ; Iida, S.

Author_Institution

Tokyo Denki Univ., Kanda

fYear

2007

fDate

2-5 April 2007

Firstpage

69

Lastpage

73

Abstract

In this paper, a double connected three-phase hybrid rectifier employing thyristors and self-turn-off devices without input transformers is proposed. Two three-phase bridge rectifiers with auxiliary circuit injecting harmonic currents are connected in parallel. This system can be performed as the conventional 24-step rectifier on the optimum conditions. In this paper, circuit performances of the proposed method are discussed by graphical analysis, and optimum parameters are derived. Then, effects on harmonics reduction can be clarified by simulations.

Keywords

harmonics suppression; rectifying circuits; thyristors; circuit performances; double-connected three-phase hybrid rectifier; harmonics reduction; self-turn-off devices; Bridge circuits; Circuit simulation; Harmonic distortion; Performance analysis; Pulse width modulation; Rectifiers; Switching loss; Thyristors; Transformers; Uninterruptible power systems; distortion factor; harmonics; hybrid multi-level rectifier;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Conversion Conference - Nagoya, 2007. PCC '07

Conference_Location

Nagoya

Print_ISBN

1-4244-0844-X

Electronic_ISBN

1-4244-0844-X

Type

conf

DOI

10.1109/PCCON.2007.372950

Filename

4239140