The University of Southampton
University of Southampton Institutional Repository

Control and sizing of a hybrid battery and compressed air energy storage system

Control and sizing of a hybrid battery and compressed air energy storage system
Control and sizing of a hybrid battery and compressed air energy storage system
—This paper discusses the sizing and control of a hybrid energy storage system comprising a battery and a compressed air energy storage (CAES) system. The CAES system is connected to the load through a boost converter that controls the air motor’s speed to achieve maximum power point tracking (MPPT). A bidirectional converter is used to connect a battery to the load and maintain the output voltage constant. The air motor and battery sizes are estimated for a typical house in the Southern region of the UK. The battery is sized to buffer load fluctuations. All system models have been simulated using MATLAB/Simulink. Two scenarios are considered: a CAES only system controlled in constant voltage mode and a hybrid system comprising CAES with an MPPT controller and a battery with a voltage controller. The results demonstrate that the power rate of air motor is estimated properly by considering the difference between the generated power and demand power. The power difference called energy deficit is used to size the battery. The performance of CAES system is improved by hybridizing with a battery; the system maintains constant voltage when the CAES operates at maximum power point (MPP). The air motor in hybrid system controlled in MPPT mode has approximately 47% greater efficiency than that of air motor controlled in voltage mode.
Energy deficit, Hybrid energy storage system, MPPT controller, Sizing, Voltage controller
193-198
Omsin, Phaisan
ed21a4a3-ca55-4909-b467-ec71411699a1
Sharkh, Suleiman
c8445516-dafe-41c2-b7e8-c21e295e56b9
Moshrefi-Torbati, Mohamed
65b351dc-7c2e-4a9a-83a4-df797973913b
Omsin, Phaisan
ed21a4a3-ca55-4909-b467-ec71411699a1
Sharkh, Suleiman
c8445516-dafe-41c2-b7e8-c21e295e56b9
Moshrefi-Torbati, Mohamed
65b351dc-7c2e-4a9a-83a4-df797973913b

Omsin, Phaisan, Sharkh, Suleiman and Moshrefi-Torbati, Mohamed (2020) Control and sizing of a hybrid battery and compressed air energy storage system. 2nd International Conference on Smart Power & Internet Energy Systems, , Bangkok, Thailand. 15 - 18 Sep 2020. pp. 193-198 . (doi:10.1109/SPIES48661.2020.9242937).

Record type: Conference or Workshop Item (Paper)

Abstract

—This paper discusses the sizing and control of a hybrid energy storage system comprising a battery and a compressed air energy storage (CAES) system. The CAES system is connected to the load through a boost converter that controls the air motor’s speed to achieve maximum power point tracking (MPPT). A bidirectional converter is used to connect a battery to the load and maintain the output voltage constant. The air motor and battery sizes are estimated for a typical house in the Southern region of the UK. The battery is sized to buffer load fluctuations. All system models have been simulated using MATLAB/Simulink. Two scenarios are considered: a CAES only system controlled in constant voltage mode and a hybrid system comprising CAES with an MPPT controller and a battery with a voltage controller. The results demonstrate that the power rate of air motor is estimated properly by considering the difference between the generated power and demand power. The power difference called energy deficit is used to size the battery. The performance of CAES system is improved by hybridizing with a battery; the system maintains constant voltage when the CAES operates at maximum power point (MPP). The air motor in hybrid system controlled in MPPT mode has approximately 47% greater efficiency than that of air motor controlled in voltage mode.

Text
Control and Sizing of a Hybrid Battery and Compressed Air Energy Storage system
Restricted to Repository staff only until 15 March 2021.
Request a copy

More information

Published date: 15 September 2020
Venue - Dates: 2nd International Conference on Smart Power & Internet Energy Systems, , Bangkok, Thailand, 2020-09-15 - 2020-09-18
Keywords: Energy deficit, Hybrid energy storage system, MPPT controller, Sizing, Voltage controller

Identifiers

Local EPrints ID: 445200
URI: http://eprints.soton.ac.uk/id/eprint/445200
PURE UUID: 8ecd7516-c437-49f4-9a09-9fc21b524ac3

Catalogue record

Date deposited: 25 Nov 2020 17:30
Last modified: 08 Dec 2020 17:30

Export record

Altmetrics

Download statistics

Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.

View more statistics

Atom RSS 1.0 RSS 2.0

Contact ePrints Soton: eprints@soton.ac.uk

ePrints Soton supports OAI 2.0 with a base URL of http://eprints.soton.ac.uk/cgi/oai2

This repository has been built using EPrints software, developed at the University of Southampton, but available to everyone to use.

We use cookies to ensure that we give you the best experience on our website. If you continue without changing your settings, we will assume that you are happy to receive cookies on the University of Southampton website.

×