Abstract
In view of the conventional droop control method of inverter cannot fully meet the requirements of the microgrid operation,a new control strategy which is based on the traditional control method and combine with synchronous generator model is put forward, also known as VSG control strategy.AVSG model is establish, focusing on the design of the power frequency controller and excitation controller. The role of the rotational inertia and the power allocation problem of two VSGs in parallel networking system are verified through Matlab / Simulink simulation. The results show that, microgrid inverter based onVSG control strategy can simulate output characteristics of synchronous generator well and is conductive to microgrid operation
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