Abstract:
This project proposes a novel bidirectional interlinking converter (BIC) ancillary feature to improve transient performance of an islanded hybrid ac-dc microgrid. A BIC connects an ac microgrid with inertial and non-inertial sources to a dc microgrid. Existing BlC control schemes do not use inertial sources like the synchronous generator (SG) as short-term storage to improve transient performance. By adaptively varying its output frequency during disturbance in the ac microgrid, the BIC can interface both microgrids. The proposed scheme operates the BIC as a virtual synchronous generator (VSG) and deliberately increases/decreases its output frequency during disturbances. BIC-SG current circulates due to BIC output frequency change. The BIC voltage phasor leads/lags the SG voltage phasor, storing SG inertia. It reduces storage requirements while maintaining transient stability, making it a cost-effective solution. Simulations and experiments verify the control strategy.
Note: Please discuss with our team before submitting this abstract to the college. This Abstract or Synopsis varies based on student project requirements.