摘要
本文旨在研製開關型磁阻電動機驅動系統，系統主要分為兩部分，分別為開關型磁阻電動機設計及開關型磁阻電動機功率級驅動器開發。
開關型磁阻電動機設計，電動機採用4相定子8極、轉子6極的結構，以電磁轉矩方程式、電感方程式及反電動勢方程式為依據，針對定子及轉子幾何尺寸及定子繞組匝數作設計，並以有限元素分析軟體(Ansoft Maxwell 2D)的磁路分析結果加以驗證，俾為實作之依據。
在開關型磁阻電動機驅動方面，依據兩個霍爾磁極偵測元件配合12極磁環作轉子位置偵測，依霍爾磁極偵測元件之訊號作為分相激磁判斷，並進行兩組式功率轉換器的控制。本文的轉速閉迴路控制策略，採用前饋補償器及轉速調節器，以提高轉速響應及運轉性能。系統以16位元數位信號處理器dsPIC30F4011作為控制核心，所有控制皆由軟體完成，減少硬體成本、增加系統可靠度。本系統在輸入電壓30V，運轉於3000rpm，轉矩為0.88 N-m，輸出為200W時，含功率轉換器及磁阻電動機的總效率為70%以上。
關鍵字：開關型磁阻電動機、兩組式功率轉換器、轉速閉迴路控制。

Abstract
This thesis is concerned with the development of a switched reluctance motor drive system. This system is divided into two parts, namely a switched
reluctance motor and its drive. The four-phase motor adopts an 8-pole stator and a 6-pole rotor. In addition to the geometrical structure of the stator and rotor, the numbers of the windings of the stator are designed based on the electromagnetic torque equation, the inductance equation and the anti-electric equation and validated according to the magnetic circuit simulation with finite
element analysis software(Ansoft Maxwell 2D). The results obtained are used to build the motor.
The switched reluctance motor driver uses two Hall sensors and a 12-pole ring magnet to detect the rotor position, generating signals to determine if phase separation and excitation should occur. The control of two sets of power converters is then conducted. In this thesis, the closed-loop control strategy of rotational speed utilizes a feed-forward compensation technique and a rotational speed regulator to boost the response of the rotational speed and efficiency. This system adopts a 16-bit digital signal processing device(sPIC30F4011) as the control core. All the control is done with software, so that the hardware cost can be reduced. Besides, the reliability of the system can be enhanced as well. The proposed system is capable of operating at a speed of 3000 rpm and providing torque up to 0.88N-m with 200-watt load and the efficiency is over 70%.
Key word：switched reluctance motor、two sets of power converters、closed-loop control strategy of rotational speed.

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