TY - GEN
T1 - Digital Grid-Connected Control Technology of Three-Stage Generator in HVDC Microgrid for More-Electric Aircraft
AU - Lan, Liqiang
AU - Guo, Zixuan
AU - Xu, Zixiao
AU - Qi, Yang
AU - Li, Weilin
N1 - Publisher Copyright:
© 2023 IEEE.
PY - 2023
Y1 - 2023
N2 - In this paper, a grid-connected control system of a double generator is established based on the aircraft's three-stage brushless synchronous generator. This system is based on the combination of generator control units (GCU) and Busbar power controller units (BPCU) to complete the digital grid-connected control of the generator. The traditional droop control algorithm is influenced by the inevitable virtual impedance in the control algorithm and the small imbalanced actual impedance in the hardware circuit, leading to voltage drop and unbalanced current distribution at the DC output. This paper presents a theoretically improved droop control algorithm by analyzing the excitation structure of a three-stage generator (TSG). Besides, the applied algorithm is verified by building a grid-connected simulation model of two three-stage generators. Finally, by building an experimental platform for grid connection of the TSG, the method of thermal switching of the TSG from 115V/400Hz to 270VDC under regulated voltage conditions is investigated and analyzed. Furthermore, the operating conditions of the two TSGs are investigated under thermal grid connection and sudden load changes.
AB - In this paper, a grid-connected control system of a double generator is established based on the aircraft's three-stage brushless synchronous generator. This system is based on the combination of generator control units (GCU) and Busbar power controller units (BPCU) to complete the digital grid-connected control of the generator. The traditional droop control algorithm is influenced by the inevitable virtual impedance in the control algorithm and the small imbalanced actual impedance in the hardware circuit, leading to voltage drop and unbalanced current distribution at the DC output. This paper presents a theoretically improved droop control algorithm by analyzing the excitation structure of a three-stage generator (TSG). Besides, the applied algorithm is verified by building a grid-connected simulation model of two three-stage generators. Finally, by building an experimental platform for grid connection of the TSG, the method of thermal switching of the TSG from 115V/400Hz to 270VDC under regulated voltage conditions is investigated and analyzed. Furthermore, the operating conditions of the two TSGs are investigated under thermal grid connection and sudden load changes.
KW - dynamic droop control
KW - grid-connected control
KW - high voltage DC microgrid
KW - More-electric aircraft
UR - http://www.scopus.com/inward/record.url?scp=85179519266&partnerID=8YFLogxK
U2 - 10.1109/IECON51785.2023.10312444
DO - 10.1109/IECON51785.2023.10312444
M3 - 会议稿件
AN - SCOPUS:85179519266
T3 - IECON Proceedings (Industrial Electronics Conference)
BT - IECON 2023 - 49th Annual Conference of the IEEE Industrial Electronics Society
PB - IEEE Computer Society
T2 - 49th Annual Conference of the IEEE Industrial Electronics Society, IECON 2023
Y2 - 16 October 2023 through 19 October 2023
ER -