Motor segerak magnet kekal mempamerkan ketumpatan tork lebih tinggi, kecekapan yang lebih baik dan mempunyai jangka hayat lebih lama berbanding dengan motor induksi dan kemudiannya, motor segerak magnet kekal dicadangkan bagi kegunaan kipas siling. Dalam projek ini, 4 bentuk lubang alur dan kutub magnet yang berlainan daripada motor segerak magnet kekal telah dicadangkan dan direka dalam bentuk 12 lubang alur 14 kutub magnet, 15 lubang alur 14 kutub magnet, 15 lubang alur 16 kutub magnet dan 18 lubang alur 16 kutub magnet. Ciri-ciri dan prestasi motor telah dinilai dengan menggunakan perisian Opera2D. Prestasi motor dari segi daya elektromagnet, ketumpatan fluks magnet, tork penugalan dan output voltan dibandingkan. Daripada penyiasatan, 12 lubang alur 14 kutub magnet motor telah dipilih. Motor yang dipilih tidak tepu ketumpatan fluks magnet semasa analisis litar terbuka dan juga menunjukkan tarikan magnet yang seimbang dalam mesin serta menunjukkan bentuk gelombang trapezoid yang sesuai untuk arus terus tanpa berus. Di samping itu, 12 lubang alur 14 kutub magnet yang diubah suai telah bertambah baik dengan mengurangkan ketumpatan fluks magnet maksimum dalam mesin. Motor juga menghasilkan kuasa keluaran kira-kira 60W dan kecekapan yang tinggi kira-kira 98%
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Permanent magnet synchronous machines (PMSMs) exhibit higher torque, better efficiency and having longer life span compared to the induction motors and subsequently, PMSMs are proposed for ceiling fans application. In this project, 4 different slot and pole numbers of the PMSMs have been proposed and designed which are 12s14p, 15s14p, 15s16p and 18s16p. The characteristics and performances of those machines have been assessed and evaluated by using the finite element software Opera2D. The performances of the motor in terms of electromagnetic force, magnetic flux density, cogging torque and voltage output are compared. From the investigation,12s14p motor is well performed. The motor depicted no saturated magnetic flux density during open-circuit analysis and also demonstrating balanced magnetic pull in the machine as well as showing smooth trapezoidal waveform which is suitable for brushless direct current (BLDC) drive. In addition, the modified 12s14p PMSM has improved by lowering the maximum magnetic flux density in the machine. The motor also produced the output power about 60W and high efficiency about 98%
Design of permanent magnet synchronous motor for ceiling fan_Loh Ching Min_E3_2014_NI