| Summary: | 碩士 === 國立臺灣科技大學 === 電機工程系 === 100 === 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.
|
|---|
