A Control Strategy for High Quality of Hybrid DC Power Supply with Auto-correcting Ultracapacitor Voltage

Chauhan, R. and Wandhare, R.G. (2021) A Control Strategy for High Quality of Hybrid DC Power Supply with Auto-correcting Ultracapacitor Voltage. In: 2021 IEEE 48th Photovoltaic Specialists Conference (PVSC), 20-25 June 2021, Fort Lauderdale, FL, USA.

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Abstract

In this paper, a new control strategy is designed and evaluated for a Hybrid DC power supply that provides regulated DC bus voltage, and the fast transient response against load variation and source variations. The proposed DC bus is powered by a Solar photovoltaic source and supported with a battery and ultracapacitor storage. The averaged model is developed for the system under study and established its control strategy. The same model is used to determine compensator parameters used in various loops of the control strategy. After serving each transient, the perturb value of ultracapacitor voltage is brought back to nominal value using the proposed control strategy to prepare it for the future transient. Bi-directional converter associated with ultracapacitor is regulating DC bus voltage against load and source variations. The battery is providing a prolonged backup for the entire system. Analytically derived compensators for feedback and feedforward loops are verified by simulation results.

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IITH Creators:

IITH Creators	ORCiD
Wandhare, Rupesh Ganpatrao	https://orcid.org/ 0000-0003-1709-3613

Item Type:

Conference or Workshop Item (Paper)

Uncontrolled Keywords:

Average model of power converter, Average modeling, Compensator design, Control strategies, Dc power supply, DC/DC power converters, Photovoltaics, Solar photo-voltaic, Ultracapacitor, Ultracapacitors

Subjects:

Electrical Engineering

Divisions:

Department of Electrical Engineering

Depositing User:

Mrs Haseena VKKM

Date Deposited:

03 Nov 2021 05:50

Last Modified:

07 Jun 2022 05:30

URI:

http://raiithold.iith.ac.in/id/eprint/8867