Fei Zhang, Jia Zhao, Jianmin Ma, and Longfei Wang
Clean energy, green power generation, virtual synchronous generator, multi machine parallel connection, power sharing strategy
Clean energy assumes paramount importance in the development of virtual synchronous generators (VSGs). In light of varying capacities and transmission line impedances, the application of VSG control strategies for parallel operation of multiple inverters can lead to power sharing issues among these inverters, posing significant risks to the power grid. A judicious power sharing strategy can enhance the green generation efficiency of multi-machine parallel VSGs. This paper proposes a dynamic virtual impedance control strategy to address the issue of reactive power sharing in parallel. Additionally, a secondary regulation controller for voltage and frequency is designed based on distributed cooperative control, ensuring stable voltage and frequency within the rated range. To validate the effectiveness of this proposed strategy, a MATLAB/Simulink-based simulation model is established, the simulation results have verified the correctness and effectiveness of the studied control strategy.
Important Links:
Go Back
