Rectangular current commutation and open-loop control for starting of a free-piston linear engine-generator
Starting a free-piston linear engine-generator consists of reciprocating a freely moving piston-magnettranslator assembly between two oppositely placed engine cylinders to initiate combustion. To provide for the reciprocating force, the machine is operated as a brushless linear motor. A starting str...
| Main Authors: | , , |
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| Format: | Conference or Workshop Item |
| Language: | English |
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2008
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| Online Access: | http://scholars.utp.edu.my/id/eprint/276/ http://scholars.utp.edu.my/id/eprint/276/1/paper.pdf |
| _version_ | 1848658948450680832 |
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| author | S.A., Zulkifli M.N., Karsiti A.R.A., Aziz |
| author_facet | S.A., Zulkifli M.N., Karsiti A.R.A., Aziz |
| author_sort | S.A., Zulkifli |
| building | UTP Institutional Repository |
| collection | Online Access |
| description | Starting a free-piston linear engine-generator consists of reciprocating a freely moving piston-magnettranslator assembly between two oppositely placed engine cylinders to initiate combustion. To provide for the reciprocating force, the machine is operated as a brushless linear motor. A starting strategy is proposed which utilizes the air-spring quality of the engine cylinders prior to combustion: by energizing the coils with fixed DC voltage and by open-loop, rectangular commutation of injected current, sufficiently high motor force is produced to reciprocate the piston-magnet assembly in small amplitudes initially. Due to repeated compression-expansion of the engine cylinders and constant application of motoring force in the direction of natural bouncing motion, the translator's amplitude and compression pressure is expected to grow - due to mechanical resonance - to finally reach the required parameters for combustion. This work discusses the electrical aspects of the starting strategy, considers control possibilities, builds a model of the electrical subsystem and presents simulation and validation tests of the integrated model for starting investigation. © 2008 IEEE.
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| first_indexed | 2025-11-13T07:22:38Z |
| format | Conference or Workshop Item |
| id | oai:scholars.utp.edu.my:276 |
| institution | Universiti Teknologi Petronas |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-13T07:22:38Z |
| publishDate | 2008 |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | oai:scholars.utp.edu.my:2762017-01-19T08:26:43Z http://scholars.utp.edu.my/id/eprint/276/ Rectangular current commutation and open-loop control for starting of a free-piston linear engine-generator S.A., Zulkifli M.N., Karsiti A.R.A., Aziz TK Electrical engineering. Electronics Nuclear engineering Starting a free-piston linear engine-generator consists of reciprocating a freely moving piston-magnettranslator assembly between two oppositely placed engine cylinders to initiate combustion. To provide for the reciprocating force, the machine is operated as a brushless linear motor. A starting strategy is proposed which utilizes the air-spring quality of the engine cylinders prior to combustion: by energizing the coils with fixed DC voltage and by open-loop, rectangular commutation of injected current, sufficiently high motor force is produced to reciprocate the piston-magnet assembly in small amplitudes initially. Due to repeated compression-expansion of the engine cylinders and constant application of motoring force in the direction of natural bouncing motion, the translator's amplitude and compression pressure is expected to grow - due to mechanical resonance - to finally reach the required parameters for combustion. This work discusses the electrical aspects of the starting strategy, considers control possibilities, builds a model of the electrical subsystem and presents simulation and validation tests of the integrated model for starting investigation. © 2008 IEEE. 2008 Conference or Workshop Item NonPeerReviewed application/pdf en http://scholars.utp.edu.my/id/eprint/276/1/paper.pdf S.A., Zulkifli and M.N., Karsiti and A.R.A., Aziz (2008) Rectangular current commutation and open-loop control for starting of a free-piston linear engine-generator. In: 2008 IEEE 2nd International Power and Energy Conference, PECon 2008, 1 December 2008 through 3 December 2008, Johor Baharu. http://www.scopus.com/inward/record.url?eid=2-s2.0-63049128041&partnerID=40&md5=85f217832da7b7db690a267bf07013e3 |
| spellingShingle | TK Electrical engineering. Electronics Nuclear engineering S.A., Zulkifli M.N., Karsiti A.R.A., Aziz Rectangular current commutation and open-loop control for starting of a free-piston linear engine-generator |
| title | Rectangular current commutation and open-loop control for starting of a free-piston linear engine-generator
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| title_full | Rectangular current commutation and open-loop control for starting of a free-piston linear engine-generator
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| title_fullStr | Rectangular current commutation and open-loop control for starting of a free-piston linear engine-generator
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| title_full_unstemmed | Rectangular current commutation and open-loop control for starting of a free-piston linear engine-generator
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| title_short | Rectangular current commutation and open-loop control for starting of a free-piston linear engine-generator
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| title_sort | rectangular current commutation and open-loop control for starting of a free-piston linear engine-generator |
| topic | TK Electrical engineering. Electronics Nuclear engineering |
| url | http://scholars.utp.edu.my/id/eprint/276/ http://scholars.utp.edu.my/id/eprint/276/ http://scholars.utp.edu.my/id/eprint/276/1/paper.pdf |