本文旨在研製五相開關型磁阻電動機的設計及驅動系統。開關型磁阻電動機的轉子不需額外的激磁，具有結構簡單、故障容許度高之優點。但其缺點為電磁轉矩漣波大，產生高噪音。為了降低其電磁轉矩漣波，此開關型磁阻電動機將選用五相繞組結構，及採用二相同時激磁控制策略，以降低換相時的電磁轉矩抖動。
在五相開關型磁阻電動機控制方面，採用霍爾效應感測元件的信號以偵測每相的激磁區間。使用二相激磁及電流磁滯控制策略，規劃每相電流形狀，不僅可提高輸出功率，亦能改善電磁轉矩的漣波成分。
另一方面，依據電感對轉子角位置的導數為正或負值，以進行電動機模式或發電機模式運轉，在煞車時以發電機模式操作，將機械慣量所儲有的能量轉換為電氣能量回收至直流電源側，提高運轉效益。在實體製作方面，以16位元的單晶片微控制器配合數位邏輯電路為控制核心，轉速及電流控制則皆由C語言完成。
本文已完成轉速閉迴路具電流磁滯控制。在額定轉速1,500rpm、額定轉矩2.0 N-m下，實測結果顯示兼具電流磁滯控制之整體系統系統效率為53% ，較諸無煞車能量回收之51% ，而轉矩漣波亦由23.2% 降至18% 。在煞車能量回收方面，當轉速由1,500 rpm降至0 rpm，功率轉換器的輸出能量為110.1 J，而回收能量為61.57 J，能量回收率達56%。總之，系統實測驗證了本文控制策略的有效性。

The thesis aims to complete the design of a five-phase switching reluctance motor and drive system. The switching reluctance motor has no excitation in the rotor, thereby yielding the advantages of simpler structure and high-ranged fault tolerance. It, however, has large electromagnetic torque ripple, resulting in high noise. To reduce this torque ripple occurred from the phase change of the excitation, control strategy of five-phase winding structure with two-phase excitation is proposed.
In the five-phase switching reluctance motor control, hall-effect sensors are used to detect each phase of the excitation range. Using the two-phase excitation and current hysteresis control strategy to shape the current waveform, one can not only increase the output power, but also reduce the electromagnetic torque ripple.
On the other hand, depending on whether the derivative of the per-phase self-inductance with respect to rotor position is positive or negative, the reluctance motor can operate in the motor or generator mode, respectively. The motor works in generator mode when breaking, the inertia energy is then converted to electrical energy and store in the dc bank to improve operating efficiency. The system is realized by using a 16-bit microcontroller as the control core. Besides, the rotation speed and current controller are compiled by C language.
A closed-loop speed control system of five-phase reluctance motor with current hysteresis control is completed. Experimental results show that under the rated speed of 1,500 rpm and the rated torque of 2.0 N-m, the overall efficiency is 53% and 51% with and without current hysteresis control, respectively, with the corresponding torque ripple reduced from 23.2% to 18%. In addition, braking operation from rated speed to standstill yields an energy regeneration of 61.6 J over the output energy of 110.1 J from five-phase power converter, resulting in an energy saving of 56%. In short, practical evaluations verify the effectiveness of the proposed control strategies.

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