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Control and power sharing in hybrid AC/DC microgrids using a nonlinear backstepping approach

Version 2 2024-05-30, 15:56
Version 1 2019-01-22, 15:05
conference contribution
posted on 2024-05-30, 15:56 authored by TK Roy, MA Mahmud, Shama IslamShama Islam, KM Muttaqi, Enamul HaqueEnamul Haque, Aman Maung Than Oo
This paper presents a backstepping approach to design controllers for different components in hybrid AC/DC microgrids. The DC-side of the proposed microgrid structure includes a solar photovoltaic (PV) unit with a DC-DC boost converter, a permanent magnet synchronous generator (PMSG)-based wind generator with a rectifier, a battery energy storage system (BESS) with a bidirectional DC-DC converter, and DC loads. The AC part incorporates a synchronous generator along with AC loads while a bidirectional voltage source converter (VSC) is used between the DC and AC buses for transferring power from one side to another. The detailed dynamical models of all these components (except loads) are used to design the controllers using the proposed nonlinear backstepping approach. The controllers are designed in a decentralized way where the main objectives are to ensure appropriate power sharing while maintaining desired voltages at the common buses on both sides. The stability of the hybrid AC/DC microgrid is theoretically analyzed through control Lyapunov functions using the controllers obtained from the proposed control scheme. Simulation studies are carried out to demonstrate the performance of the proposed scheme under different operating scenarios as compared to a nonlinear sliding mode control scheme.

History

Pagination

1-8

Location

Portland, Oregon

Start date

2018-09-23

End date

2018-09-27

ISBN-13

9781538645369

Language

eng

Publication classification

E Conference publication, E1 Full written paper - refereed

Title of proceedings

IAS 2018 : Proceedings of the 2018 IEEE Industry Applications Society Annual Meeting

Event

IEEE Industry Applications Society. Meeting (2018 : Portland, Oregon)

Publisher

IEEE

Place of publication

Piscataway, N.J