TY - GEN
T1 - Research on Control Strategy of Hybrid Energy Storage System of Squirrel Cage Wind Turbine under Unbalanced Fault
AU - Wang, Haihan
AU - Tian, Guizhen
AU - Liu, Guangchen
AU - Zhang, Jianwei
N1 - Publisher Copyright:
© 2020 IEEE.
PY - 2020/11/29
Y1 - 2020/11/29
N2 - When the grid voltage is unbalanced, the lifetime of the drive train is reduced because of the squirrel cage induction generator (SCIG) torque oscillations with double grid frequency. In this paper, the coordinated control strategy of a hybrid energy storage system (HESS) is designed, including the positive-and negative-sequence voltage coordinated control strategy of DC/AC converter, the control strategy of the lithium battery and supercapacitor. The objective of the positive-sequence voltage control strategy is to maintain the voltage of the point of common coupling (PCC) at the rated value, while the objective of the negative-sequence voltage control strategy is to control the negative-sequence voltage to zero. Therefore, the control strategy can eliminate the generator electromagnetic torque oscillations. The control strategies of the lithium battery and supercapacitor in an HESS are designed as well. A lithium battery is employed to stabilize the DC voltage of the DC/AC converter and a supercapacitor is used to absorb power fluctuations on the DC side of the inverter. Finally, the correctness and effectiveness of the control strategy are verified by the simulation work in the real time digital simulator (RTDS).
AB - When the grid voltage is unbalanced, the lifetime of the drive train is reduced because of the squirrel cage induction generator (SCIG) torque oscillations with double grid frequency. In this paper, the coordinated control strategy of a hybrid energy storage system (HESS) is designed, including the positive-and negative-sequence voltage coordinated control strategy of DC/AC converter, the control strategy of the lithium battery and supercapacitor. The objective of the positive-sequence voltage control strategy is to maintain the voltage of the point of common coupling (PCC) at the rated value, while the objective of the negative-sequence voltage control strategy is to control the negative-sequence voltage to zero. Therefore, the control strategy can eliminate the generator electromagnetic torque oscillations. The control strategies of the lithium battery and supercapacitor in an HESS are designed as well. A lithium battery is employed to stabilize the DC voltage of the DC/AC converter and a supercapacitor is used to absorb power fluctuations on the DC side of the inverter. Finally, the correctness and effectiveness of the control strategy are verified by the simulation work in the real time digital simulator (RTDS).
KW - coordinated control
KW - hybrid energy storage system
KW - squirrel cage induction generator
KW - unbalanced
UR - https://www.scopus.com/pages/publications/85103172681
U2 - 10.1109/IPEMC-ECCEAsia48364.2020.9367778
DO - 10.1109/IPEMC-ECCEAsia48364.2020.9367778
M3 - Conference contribution
AN - SCOPUS:85103172681
T3 - 2020 IEEE 9th International Power Electronics and Motion Control Conference, IPEMC 2020 ECCE Asia
SP - 3329
EP - 3334
BT - 2020 IEEE 9th International Power Electronics and Motion Control Conference, IPEMC 2020 ECCE Asia
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 9th IEEE International Power Electronics and Motion Control Conference, IPEMC 2020 ECCE Asia
Y2 - 29 November 2020 through 2 December 2020
ER -