DocumentCode :
63370
Title :
A Space-Vector Modulation Method for Common-Mode Voltage Reduction in Current-Source Converters
Author :
Jian Shang ; Yun Wei Li
Author_Institution :
Dept. of Electr. & Comput. Eng., Univ. of Alberta, Edmonton, AB, Canada
Volume :
29
Issue :
1
fYear :
2014
fDate :
Jan. 2014
Firstpage :
374
Lastpage :
385
Abstract :
The common-mode voltage (CMV) produced from a converter system is a source of many problems, e.g., in the motor drive system, CMV might appear at the neutral point of the motor stator windings with respect to the ground and induce destructive bearing current. Reduced CMV space-vector modulation (RCMV SVM) methods have been proposed in both voltage-source converter (VSC) and current-source converter (CSC) systems. The available RCMV SVMs reduce the CMV by avoiding using zero-state vectors. However, this will lead to some negative effects, such as shrink of modulation index range, increase of switching frequencies, bipolar line-to-line voltage pulse patterns in VSCs, and power quality performance deterioration. In this paper, a RCMV SVM method for CSCs is proposed. By allowing the use of zero-state vectors, the proposed RCMV SVM still produces much lower CMV. However, its other performance indices, such as switching frequency and harmonic performance, are unaffected and comparable to the conventional SVMs. The effectiveness of the proposed RCMV SVM for CSCs is verified in the simulations and experiments.
Keywords :
motor drives; performance index; power convertors; power supply quality; stators; CMV reduction; CSC systems; SVM method; VSC; bipolar line-to-line voltage pulse patterns; common-mode voltage reduction; current-source converters; harmonic performance; induce destructive bearing current; modulation index range; motor drive system; motor stator windings; performance indices; power quality performance deterioration; space-vector modulation method; switching frequencies; voltage-source converter; zero-state vectors; Delay; Harmonic analysis; Modulation; Support vector machines; Switches; Switching frequency; Vectors; Current-source converter (CSC); power quality; reduced common-mode voltage (CMV) SVM; zero-state vector;
fLanguage :
English
Journal_Title :
Power Electronics, IEEE Transactions on
Publisher :
ieee
ISSN :
0885-8993
Type :
jour
DOI :
10.1109/TPEL.2013.2248025
Filename :
6466393
Link To Document :
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