DocumentCode :
1357819
Title :
Design and Analysis of User-Defined Constant Switching Frequency Current-Control-Based Four-Leg DSTATCOM
Author :
George, Vincent ; Mishra, Mahesh K.
Author_Institution :
Dept. of Electr. Eng., Indian Inst. of Technol. Madras, Chennai, India
Volume :
24
Issue :
9
fYear :
2009
Firstpage :
2148
Lastpage :
2158
Abstract :
This paper presents a detailed study on the design and analysis of user-defined constant switching (UDCS) frequency current-control-based four-leg distribution static compensator (DSTATCOM). The three phase legs of its voltage source inverter are operated in hysteresis current tracking mode whereas the fourth leg is controlled by a square switching pulse of user-defined frequency. Consequently, the switches of the other three legs also get tuned to this user-defined frequency. Analytical expressions are derived that prescribe the range of frequencies for which the scheme works effectively. Design procedure is also suggested for the selection of the parameters of the four-leg inverter such as dc-link voltage, dc-link capacitor, interface inductor, and hysteresis band. Simulation and experimental studies are conducted to validate the proposed design procedure for a UDCS-controller-based DSTATCOM. Its performance is compared with a conventional hysteresis-controlled DSTATCOM.
Keywords :
active filters; electric current control; frequency control; power filters; static VAr compensators; active power filter; distribution static compensator; four-leg DSTATCOM; square switching pulse; user-defined constant switching frequency current-control; voltage source inverter; Capacitors; Current control; Electromagnetic interference; Hysteresis; Inductors; Inverters; Leg; Switches; Switching frequency; Voltage control; Active power filter; constant switching frequency; current control; design; voltage source inverter (VSI);
fLanguage :
English
Journal_Title :
Power Electronics, IEEE Transactions on
Publisher :
ieee
ISSN :
0885-8993
Type :
jour
DOI :
10.1109/TPEL.2009.2019821
Filename :
5224000
Link To Document :
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