Regresar

Multi-Objective Finite-Time Control for the Interlinking Converter on Hybrid AC/DC Microgrids

Abstract:

Hybrid AC/DC microgrids are of special interest for energization due to their flexibility, low infrastructure investments, reduced conversion losses and reliability against failures on the utility grid. In this system, the global economic dispatch needs communication between the AC and DC subgrids to achieve a near-optimal solution. Hence, this paper proposes a distributed finite-time controller for the microgrid’s interlinking converter, which ensures an economic operation while taking care of the microgrid power utilisation. The interlinking converter uses incremental costs and average powers from distributed generators in AC and DC sides. An adaptive weighting method is proposed to adjust the control effort regarding the average power utilisation of a side MG. The controller’s performance is verified through simulations and experimental setups. Results show that the proposed strategy is able to perform a trade-off between the two control objectives while achieving a fast convergence.