DC link voltage controller based power flow control in distributed microgrid

This paper proposes a method of power flow control in a distributed microgrid supplied from wind energy system. In this method, the available wind power is calculated through DC link capacitor voltage control loop. According to available wind power the local loads of the distributed microgrid are supplied power from the distributed generation (DG) system. A voltage source inverter (VSI) is used for the microgrid interface of the wind power and is controlled in order to inject the real power of the wind energy system and achieve local load compensation. The generation of reference currents for voltage source inverter depends upon the available wind power for real power injection and load reactive, harmonic and unbalance components for load compensation. Simulation studies are performed using PSCAD/EMTDC to validate the proposed scheme.