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Integrated Free-Piston Generators: An Overview
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| Author(s) |
W. Arshad; P. Thelin; C. Sadarangani; T. Bäckström |
| Abstract |
The free-piston generator is an energy conversion device that integrates a combustion engine and an electrical generator into a single unit. Thereby the intermediary crankshaft stage present in conventional hybrid topologies is eliminated. This has benefits in efficiency, weight reduction, robustness, variable compression operation and multi-fuel possibilities. This paper presents the free-piston generator concepts, along with the expected benefits and drawbacks. A literature survey is provided. Results from a simplified combustion modeling process are presented in terms of piston motion profiles. These have implications upon the dimensioning and selection of an appropriate electrical machine. Specifications for the electrical machine are outlined. Some distinct electrical machine solutions are presented and discussed. An application of the free-piston generator in a series hybrid vehicle is also proposed. |
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| Filename: | Unnamed file |
| Filesize: | 428.3 KB |
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| Type |
Members Only |
| Date |
Last modified 2006-02-28 by System |
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