A hybrid method for maximum power tracking of a
small scale CAES system
A hybrid method for maximum power tracking of a
small scale CAES system
This paper is concerned with maximum power tracking of a pneumatically-driven electric generator in a standalone small scale compressed air energy storage system (CAES). In this system, an air motor is used to drive a permanent magnet DC generator, whose output is controlled by a buck converter supplying power to a resistive load. The output power of the converter is controlled such that the air motor operates at a speed corresponding to maximum power. The maximum power point tracking (MPPT) controller uses a hybrid perturb and observe search algorithm. It utilizes the power-speed curve when it is near the maximum power point (fine tuning). When it is far from the maximum power point, it uses the more sensitive power-duty cycle characteristic of the buck converter generator system (coarse tuning). The analysis and design of the controller is based on a small injected-absorbed current signal-model of the power converter. The controller is implemented experimentally using a dSPACE system. Test results are presented to validate the proposed design and demonstrate its capabilities.
Power Conversion, Buck Converter, CAES, MPPT, Control
61-66
Kokaew, V.
c9423a98-81d2-4293-bcc3-891445f3de92
Sharkh, S.M.
c8445516-dafe-41c2-b7e8-c21e295e56b9
Moshrefi-Torbati, M.
65b351dc-7c2e-4a9a-83a4-df797973913b
23 July 2014
Kokaew, V.
c9423a98-81d2-4293-bcc3-891445f3de92
Sharkh, S.M.
c8445516-dafe-41c2-b7e8-c21e295e56b9
Moshrefi-Torbati, M.
65b351dc-7c2e-4a9a-83a4-df797973913b
Kokaew, V., Sharkh, S.M. and Moshrefi-Torbati, M.
(2014)
A hybrid method for maximum power tracking of a
small scale CAES system.
9th IEEE/IET International Symposium on Communication Systems, Networks & Digital Signal Processing, CSNDSP14, Manchester, United Kingdom.
23 - 25 Jul 2014.
.
(doi:10.1109/CSNDSP.2014.6923799).
Record type:
Conference or Workshop Item
(Paper)
Abstract
This paper is concerned with maximum power tracking of a pneumatically-driven electric generator in a standalone small scale compressed air energy storage system (CAES). In this system, an air motor is used to drive a permanent magnet DC generator, whose output is controlled by a buck converter supplying power to a resistive load. The output power of the converter is controlled such that the air motor operates at a speed corresponding to maximum power. The maximum power point tracking (MPPT) controller uses a hybrid perturb and observe search algorithm. It utilizes the power-speed curve when it is near the maximum power point (fine tuning). When it is far from the maximum power point, it uses the more sensitive power-duty cycle characteristic of the buck converter generator system (coarse tuning). The analysis and design of the controller is based on a small injected-absorbed current signal-model of the power converter. The controller is implemented experimentally using a dSPACE system. Test results are presented to validate the proposed design and demonstrate its capabilities.
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More information
Published date: 23 July 2014
Venue - Dates:
9th IEEE/IET International Symposium on Communication Systems, Networks & Digital Signal Processing, CSNDSP14, Manchester, United Kingdom, 2014-07-23 - 2014-07-25
Keywords:
Power Conversion, Buck Converter, CAES, MPPT, Control
Organisations:
Mechatronics
Identifiers
Local EPrints ID: 367074
URI: http://eprints.soton.ac.uk/id/eprint/367074
PURE UUID: a50f0eec-802e-4eca-a884-c21273db8be6
Catalogue record
Date deposited: 25 Jul 2014 08:47
Last modified: 15 Mar 2024 02:48
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