Deakin University

File(s) under permanent embargo

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

conference contribution
posted on 2018-11-29, 00:00 authored by Tushar Kanti Roy, Apel MahmudApel Mahmud, Shama IslamShama Islam, K M Muttaqi, Enamul HaqueEnamul Haque, Aman Maung Than OoAman 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.



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


1 - 8




Portland, Oregon

Place of publication

Piscataway, N.J

Start date


End date






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