Title: Power management of bidirectional inter allied converter community in hybrid ac/dc microgrid using localised distributed fuzzy logic controller

Authors: P. Bhavana; J. Somlal

Addresses: Department of EEE, Koneru Lakshmaiah Education Foundation, Vaddeswaram-522502, AP, India ' Department of EEE, Koneru Lakshmaiah Education Foundation, Vaddeswaram-522502, AP, India

Abstract: In hybrid AC/DC microgrid, Bidirectional Inter-Allied Converter (BIAC) plays a major role as bridging unit and aids power interchange between AC and DC subgrids. Extension of concept of power sharing to BIAC, a power management strategy is proposed for BIAC community to avoid overstress instead of using single BIAC. In this control strategy, each BIAC is allocated with a well-devised localised distributed fuzzy logic controller (LDFLC) to generate the appropriate power references. Allocation of power interactions among each subgrid depends on rated capacity which indirectly improves reliability and scalability in significant manner. The power management strategy also includes the concept of balanced power sharing, bidirectional power flow, and communication time delay, validates its stability analysis in Matlab/Simulink platform. This paper suggests, a power management controller structure using LDFLC and compares with Proportional Integral based localised distributed controller (PILDC) for improvement of efficiency in the hybrid distributed generation system.

Keywords: hybrid AC/DC microgrid; bidirectional inter-allied converter; localised distributed fuzzy logic controller; power balance; system stability; renewable energy sources; bidirectional power flow; communication delay; plug-and-play; droop control; power management.

DOI: 10.1504/IJHVS.2022.127012

International Journal of Heavy Vehicle Systems, 2022 Vol.29 No.3, pp.326 - 341

Received: 05 Mar 2021
Accepted: 21 Mar 2021
Published online: 18 Nov 2022 *

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