本研究設計出一小型發電機，使用軸向磁化的環形磁鐵作為定子，並以側邊的PCB線圈作為轉子，通過旋轉激勵來產生感應電力。為了在最大限度利用零件空間的同時提升發電效率，透過理論分析與模擬結果進行改良，調整包括線圈匝數、尺寸、層數和磁鐵尺寸等參數。並採用改良的連接方式，使多層線圈厚度更薄，以及調整線圈與機構的配合尺寸，以減少摩擦效應。最終透過內外模型的零件與結構協作，完成直徑約50 mm、長度約30 mm之發電機。 實驗量測在轉速600 rpm時感應電壓可達到35.8 Vpp，2100 rpm時感應電壓為118 Vpp，發電機功率於最高轉速2100 rpm時可達到約2.4 W，並且在之後可利用橋式整流濾波將感應交流電轉換成直流電，為加速度感測器等元件供應電源。 ;In this study, a small generator was designed, utilizing axially magnetized ring magnets as the stator and PCB side coils as the rotor, generating induced power through rotational excitation. To maximize the utilization of component space while improving generation efficiency, various parameters such as coil turns, size, number of layers, and magnet dimensions were optimized through theoretical analysis and simulation. An improved connection method was adopted to make the multi-layer coil thinner, and adjustments were made to the dimensions between the coil and the mechanical structure to minimize friction. The final generator, measuring approximately 50 mm in diameter and 30 mm in length, was completed through the collaboration of internal and external components. Experimental measurements showed that the induced voltage reached 35.8 Vpp at 600 rpm and 118 Vpp at 2100 rpm. The induced AC voltage can be converted into DC power using a bridge rectifier and filter, providing a power supply to components such as an accelerometer.
