DocumentCode :
3603778
Title :
Control of High-Frequency Isolated Modular Converter
Author :
Yousefpoor, Nima ; Parkhideh, Babak ; Azidehak, Ali ; Sungmin Kim ; Bhattacharya, Subhashish
Author_Institution :
Quanta Technol., Raleigh, NC, USA
Volume :
51
Issue :
6
fYear :
2015
Firstpage :
4634
Lastpage :
4641
Abstract :
Recently, voltage-source converter (VSC)-based high-voltage dc (HVDC) transmission systems have gained more attention. In this paper, a control method for a modular VSC-based HVDC transmission system with high-frequency isolation referred to as high-frequency isolated modular converter is proposed. In the high-frequency isolated modular converter configuration, several floating dc capacitors in all three phases are connected in series, and voltage balancing control of these floating dc capacitors is required. In this paper, an appropriate control structure with the capacitor voltage balancing controller is proposed. The proposed control scheme consists of three layers to control terminal dc bus voltage and balance dc capacitor voltages of each building block. Detailed PSCAD simulation results are presented to evaluate the performance of high-frequency isolated modular converter. Controller hardware-in-the-loop simulation of the high-frequency isolated modular converter is also performed by real-time digital simulator (RTDS), and RTDS results are presented to verify the control structure. Finally, laboratory-scale experimental results are presented to validate the proposed control method.
Keywords :
HVDC power convertors; power capacitors; real-time systems; voltage control; PSCAD simulation results; RTDS; capacitor voltage balancing controller; controller hardware-in-the-loop simulation; dc capacitor voltages; floating dc capacitors; high-frequency isolated modular converter; modular VSC-based HVDC transmission system; real-time digital simulator; terminal dc bus voltage; voltage-source converter-based high-voltage dc transmission systems; Capacitors; Frequency control; Frequency conversion; HVDC transmission; PSCAD; Power conversion; Voltage control; Capacitor Voltage Balancing Controller; Capacitor voltage balancing controller; HVDC transmission systems; High Frequency Isolated Modular Converter; Voltage Source Converter (VSC); high-frequency isolated modular converter; high-voltage dc (HVDC) transmission systems; voltage-source converter (VSC);
fLanguage :
English
Journal_Title :
Industry Applications, IEEE Transactions on
Publisher :
ieee
ISSN :
0093-9994
Type :
jour
DOI :
10.1109/TIA.2015.2457402
Filename :
7160728
Link To Document :
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