An Improved Voltage Control Strategy Based on Finite-Time Theory for Virtual Synchronous Generator

• Published in: IECON 2021 – 47th Annual Conference of the IEEE Industrial Electronics Society pp. 1 - 6
• Main Authors: Cai, Wenlu, Du, Chunshui, Shi, Qiguo, Wang, Guangwei, Wang, Aiping, Chui, Dezheng
• Format: Conference Proceeding
• Language: English
• Published: IEEE 13.10.2021
• Subjects: Conferences; double closed loop; Electric potential; finite-time control; Industrial electronics; micro grid inverter; Pulse width modulation; Robustness; Simulation; Synchronous generators; virtual synchronous generator
• ISSN: 2577-1647
• DOI: 10.1109/IECON48115.2021.9589157

As an original inverter control method, the virtual synchronous generator (VSG) control technology has aroused much attention in recent years since it can achieve better dynamic voltage regulation when micro grid (MG) operates on island or load changes suddenly. Further, aiming at the superior voltage control of VSG, this paper proposed a double closed loop control strategy based on finite-time control (FTC) to improve the dynamic performance of the system. Compared with the traditional proportional integral (PI) control strategy, the proposed strategy can achieve the quick respond speed and strongly robustness when the event of load change occurs. Finally, the simulation and experimental results demonstrate the feasibility and correctness of the proposed control method.