TY - GEN
T1 - Application of a Parallel Virtual Infinite Capacitor to DC-link Voltage Filtering for a Doubly Fed Induction Wind Generator
AU - Lin, Shuyue
AU - Tong, Xin
AU - Zhao, Xiaowei
AU - Weiss, George
N1 - Publisher Copyright:
© 2018 IEEE.
PY - 2018/10/16
Y1 - 2018/10/16
N2 - We propose a parallel virtual infinite capacitor (PVIC) concept to replace the DC-link capacitor between two back-to-back converters for a DFIG (doubly fed induction generator) wind turbine for voltage filtering. The PVIC is composed of two virtual infinite capacitors (VICs) sharing one common capacitor: A LF (low-frequency)-VIC and a HF (high-frequency)-VIC. The LF-VIC is controlled by a sliding mode controller to regulate low-frequency component of the DC-link voltage around its reference. We use a PI controller to maintain this VIC's state of charge in its desired operating range and achieve the 'plug-and-play' pattern of PVIC. The HF-VIC is controlled by another sliding mode controller to suppress high-frequency ripples of the DC-link voltage and simultaneously keep the VIC in its desired operating range. The simulation study indicates that PVIC performs much better than the equivalent DC-link capacitor in limiting the DC-link voltage fluctuations under different grid conditions.
AB - We propose a parallel virtual infinite capacitor (PVIC) concept to replace the DC-link capacitor between two back-to-back converters for a DFIG (doubly fed induction generator) wind turbine for voltage filtering. The PVIC is composed of two virtual infinite capacitors (VICs) sharing one common capacitor: A LF (low-frequency)-VIC and a HF (high-frequency)-VIC. The LF-VIC is controlled by a sliding mode controller to regulate low-frequency component of the DC-link voltage around its reference. We use a PI controller to maintain this VIC's state of charge in its desired operating range and achieve the 'plug-and-play' pattern of PVIC. The HF-VIC is controlled by another sliding mode controller to suppress high-frequency ripples of the DC-link voltage and simultaneously keep the VIC in its desired operating range. The simulation study indicates that PVIC performs much better than the equivalent DC-link capacitor in limiting the DC-link voltage fluctuations under different grid conditions.
UR - http://www.scopus.com/inward/record.url?scp=85056512670&partnerID=8YFLogxK
U2 - 10.1109/EEEIC.2018.8493689
DO - 10.1109/EEEIC.2018.8493689
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AN - SCOPUS:85056512670
T3 - Proceedings - 2018 IEEE International Conference on Environment and Electrical Engineering and 2018 IEEE Industrial and Commercial Power Systems Europe, EEEIC/I and CPS Europe 2018
BT - Proceedings - 2018 IEEE International Conference on Environment and Electrical Engineering and 2018 IEEE Industrial and Commercial Power Systems Europe, EEEIC/I and CPS Europe 2018
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2018 IEEE International Conference on Environment and Electrical Engineering and 2018 IEEE Industrial and Commercial Power Systems Europe, EEEIC/I and CPS Europe 2018
Y2 - 12 June 2018 through 15 June 2018
ER -
