Halbach array linear alternator for thermo-acoustic engine

Chitta Saha; P. H. Riley; J. Paul; Z. Yu; A. J. Jaworski; C. M. Johnson

doi:10.1016/j.sna.2012.01.042

Halbach array linear alternator for thermo-acoustic engine

Chitta Saha, P. H. Riley, J. Paul, Z. Yu, A. J. Jaworski, C. M. Johnson

Research output: Contribution to journal › Article › peer-review

28 Citations (SciVal)

Abstract

This paper focuses on the design issues of a thermo-acoustically driven low-cost linear alternator for the SCORE project. SCORE (www.score.uk.com) aims to improve the quality of life around 2 billion poor people in the rural communities of the developing countries. The advantage of the double Halbach array permanent magnet moving coil alternator structure over traditional loudspeaker as a linear alternator is presented. The theoretical analysis of the linear alternator at different coil configurations with the rectifier circuit is explained and analysed with the finite elements simulation results. The simulation results show that the double coil structure with the smaller number of coil turns would be suitable for this project. The experimental results of the double Halbach array prototype which has been built and tested are discussed and compared with the simulation results.

Original language	English
Journal	Sensors and Actuators A: Physical
DOIs	https://doi.org/10.1016/j.sna.2012.01.042
Publication status	Published (VoR) - 4 Feb 2012

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10.1016/j.sna.2012.01.042

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title = "Halbach array linear alternator for thermo-acoustic engine",

abstract = "This paper focuses on the design issues of a thermo-acoustically driven low-cost linear alternator for the SCORE project. SCORE (www.score.uk.com) aims to improve the quality of life around 2 billion poor people in the rural communities of the developing countries. The advantage of the double Halbach array permanent magnet moving coil alternator structure over traditional loudspeaker as a linear alternator is presented. The theoretical analysis of the linear alternator at different coil configurations with the rectifier circuit is explained and analysed with the finite elements simulation results. The simulation results show that the double coil structure with the smaller number of coil turns would be suitable for this project. The experimental results of the double Halbach array prototype which has been built and tested are discussed and compared with the simulation results. ",

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AU - Saha, Chitta

AU - Riley, P. H.

AU - Paul, J.

AU - Yu, Z.

AU - Jaworski, A. J.

AU - Johnson, C. M.

PY - 2012/2/4

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Halbach array linear alternator for thermo-acoustic engine

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