DocumentCode :
2365184
Title :
A Modulation Strategy to Reduce Common-Mode Voltage for Current-Controlled Matrix Converters
Author :
Hua, Lin ; Bi, He ; Xiaofeng, Zhang
Author_Institution :
Coll. of Electr. & Electron. Eng., Huazhong Univ. of Sci. & Technol., Wuhan
fYear :
2006
fDate :
6-10 Nov. 2006
Firstpage :
2775
Lastpage :
2780
Abstract :
In this paper, a basic hysteresis control strategy for current-controlled matrix converter (MC) is introduced and discussed. Based on the rectifier-inverter equivalent circuit, a novel primary modulation strategy for improving the input current quality of MC is presented. That is, space vector modulation is used for control input current, and hysteresis current strategy with zero vectors is used for control output current. Furthermore, an optimal modulation strategy that reduces common-mode voltage at the output is proposed. This optimal strategy maintains subdivision of 6 input current sectors and proper selection of zero vectors and switching sequences. Therefore, by using this optimal strategy, peak value of common-mode voltage is reduced by 33.3% and RMS value is reduced by over 50% compared to the unoptimizable modulation strategy. Finally, simulation and experimental results are provided to verify the validity and feasibility of modulation strategy proposed in this paper
Keywords :
electric current control; equivalent circuits; hysteresis; invertors; matrix convertors; rectifying circuits; switching convertors; common-mode voltage; hysteresis control strategy; hysteresis current strategy; matrix converter current control; optimal modulation strategy; rectifier-inverter equivalent circuit; space vector modulation strategy; switching sequences; zero vector selection; Bismuth; Educational institutions; Equations; Equivalent circuits; Frequency; Hysteresis motors; Leakage current; Matrix converters; Space technology; Voltage control;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
IEEE Industrial Electronics, IECON 2006 - 32nd Annual Conference on
Conference_Location :
Paris
ISSN :
1553-572X
Print_ISBN :
1-4244-0390-1
Type :
conf
DOI :
10.1109/IECON.2006.347238
Filename :
4153065
Link To Document :
بازگشت