Title :
A deadbeat control method for VSC-HVDC under AC voltage unbalance
Author :
Liang, Haifeng ; Kang, Jinliang ; Li, Gengyin ; Zhou, Ming
Author_Institution :
Sch. of Electr. & Electron. Eng., North China Electr. Power Univ., Baoding, China
Abstract :
The mathematical models and power balance relation of VSC-HVDC under AC voltage unbalance were studied in this paper. Based on the mathematical model and the power relations, a kind of negative sequence voltage compensating control strategy was proposed to suppress the negative sequence current. To provide accurate and quick tracking of the generated active and reactive current trajectories, deadbeat control was applied to the positive sequence current inner loop control. The simulation results show that the proposed control strategy not only can suppress the negative sequence current effectively, but also mitigate 2nd harmonic ripple.
Keywords :
HVDC power convertors; electric current control; mathematical analysis; power transmission control; voltage control; AC voltage unbalance; VSC-HVDC; deadbeat control method; mathematical models; negative sequence current suppression; negative sequence voltage compensating control strategy; positive sequence current inner loop control; power balance; reactive current trajectory; Harmonic analysis; Mathematical model; Power conversion; Reactive power; Simulation; Voltage control; Deadbeat control; Negative sequence current; Unbalance; VSC;
Conference_Titel :
Power and Energy Society General Meeting, 2011 IEEE
Conference_Location :
San Diego, CA
Print_ISBN :
978-1-4577-1000-1
Electronic_ISBN :
1944-9925
DOI :
10.1109/PES.2011.6039601
