近年來小型製冷機應用範圍與市場持續擴大，並朝著微型化與高性能方向發展，整體式-L型史特靈製冷機在結構空間上更簡潔，有助於縮小製冷機體積，但相較於其它型式史特靈製冷機，整體式-L型史特靈製冷機製冷端受到壓縮端之影響，馬達與活塞之運動對移氣器形成側向力，系統振動可能較為劇烈，然而製冷頭於低溫、低熱負載下需要盡可能減少擾動。
本文針對史特靈製冷機用表面型永磁同步馬達，以獲得較小振動之目的，探討其馬達參數對於徑向磁力密度之影響，利用快速傅立葉轉換分析其徑向磁力密度諧波，同時透過電磁力諧波之模擬分析，評估電磁特性與振動關係，並提出一閉槽式定子設計運用在史特靈製冷機，省去不鏽鋼殼機構之製作。

In recent years, the application range and market of small coolers have continued to expand, and the development of miniaturization and high performance has been progressing. The integral-L Stirling cooler has a simpler structure space, which helps to reduce the volume of the cooler. Compared with other types of Stirling coolers, the cold side of the integral-L Stirling cooler is easily affected by its compression side. The movements of the motor and the piston bring about a force on the displacer, and the system vibration is more severe. It is necessary to minimize the disturbance at low temperatures and low heat loads.
In this paper, the surface permanent magnet synchronous motor (SPMSM) is applied on Stirling coolers to obtain the effect of small vibration. The influence of motor parameters on the radial magnetic density is discussed. Fast Fourier Transform is used to analyze the radial magnetic density harmonics, and the relation between electromagnetic characteristics and vibration is evaluated through the simulation analysis of electromagnetic force harmonics. Also, a closed-slot stator design for use in Stirling coolers is proposed in order to spare the production of stainless steel shell mechanism.

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