A novel current source converter array with swapping of module control signal

Author

Jun, Li ; Xu, Dehong ; Cheng, K.W.E.

Author_Institution

Coll. of Electr. Eng., Zhejiang Univ., Hangzhou, China

Volume

4

fYear

2004

fDate

2004

Firstpage

2817

Abstract

A current source converter array designed for superconducting magnetic energy storage system was investigated. This array is controlled by modulation-signal phase-shifting SPWM method. The DC side current of each converter module of the converter array can balance automatically at the unity power factor, but unbalanced seriously with the decrease of input power factor. In addition, the DC side current unbalancing causes higher distortion of AC input current. Swapping of the gating signal of each converter module in same row is introduced to average the DC side currents. The harmonics of the AC currents is reduced while the DC side currents are balanced. 2×2 array and 2×4 array are studied in the experiments.

Keywords

PWM power convertors; power factor; superconducting magnet energy storage; AC input current; DC side current; current source converter array; modulation-signal phase-shifting SPWM method; module control signal; superconducting magnetic energy storage system; unity power factor; Logic arrays; Personal communication networks; Phase modulation; Phased arrays; Power system harmonics; Reactive power; Samarium; Superconducting magnetic energy storage; Transformers; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Electronics Specialists Conference, 2004. PESC 04. 2004 IEEE 35th Annual

ISSN

0275-9306

Print_ISBN

0-7803-8399-0

Type

conf

DOI

10.1109/PESC.2004.1355280

Filename

1355280