Abstract
This study focuses on the design and analysis of a linear oscillatory single-phase permanent magnet generator for free-piston stirling engine (FPSE) systems. In order to implement the design of linear oscillatory generator (LOG) for suitable FPSEs, we conducted electromagnetic analysis of LOGs with varying design parameters. Then, detent force analysis was conducted using assisted PM. Using the assisted PM gave us the advantage of using mechanical strength by detent force. To improve the efficiency, we conducted characteristic analysis of eddy-current loss with respect to the PM segment. Finally, the experimental result was analyzed to confirm the prediction of the FEA.
Highlights
Because of increasing environmental concerns, intensive research and development have been conducted in the field of renewable energy
In order to implement the design of the linear oscillatory generator (LOG) for suitable free-piston stirling engine (FPSE), we conducted electro-magnetic analysis of the LOG with varying design parameters
This paper presented the design and analysis of an LOG for the FPSE system
Summary
Because of increasing environmental concerns, intensive research and development have been conducted in the field of renewable energy. Fixed-frequency linear motion applications, such as compressors, pumps, vibrators, and speakers/microphones use linear oscillatory single-phase permanent magnet motors (LOMs), while short-stroke applications such as FPSEs use LOG.[1,2,3] The efficiency of the LOG is increased by reducing the mechanical losses caused by the crankshaft mechanism. This system has lower noise and fewer vibration effects than rotary machines. LOGs for FPSE systems were designed and analyzed. The analysis results of the designed LOG machines were compared with the measured results
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