Analysis and Design of Permanent Magnet Brushless Motor Drivers Based on Digital Signal Processor

碩士 === 國立雲林科技大學 === 電機工程系碩士班 === 90 === Permanent Magnet Brushless Motors can be classified into Permanent Magnet Synchronous Motor (PMSM) and Brushless DC Motor (BLDCM) two types according to their different electromotive forces (EMFs). This thesis is concerned with the analysis and development of...

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Bibliographic Details
Main Authors: Tsong-Min Wang, 王聰銘
Other Authors: Yie-Tone Chen
Format: Others
Language:zh-TW
Published: 2002
Online Access:http://ndltd.ncl.edu.tw/handle/28129441856998113509
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Summary:碩士 === 國立雲林科技大學 === 電機工程系碩士班 === 90 === Permanent Magnet Brushless Motors can be classified into Permanent Magnet Synchronous Motor (PMSM) and Brushless DC Motor (BLDCM) two types according to their different electromotive forces (EMFs). This thesis is concerned with the analysis and development of digital control drive system for the above two types. For the PMSM with sinusoidal EMF, the indirect field-oriented control (FOC) theory is applied to the closed-loop control system, in which includes the speed controllers, the current regulators, and the optimum space vector pulse-width modulated inverter. The speed controller uses the proportional-integral control technique. About the current regulators, they include the decoupled current controller and the compensator of voltage command to improve current response. As for the pulse-width modulation, it applies the optimum space vector modulation method to decrease the switching losses. The drive system not only obtains good and stable speed regulation, but also decreases current harmonic to decrease the pulse torque of motor. For the BLDCM with trapezoidal EMF, the BLDCM is drived by six-step trapezoidal method and pulse-with modulation. The closed-loop speed control is implemented by analog and digital two methods. A digital control system for permanent magnet brushless motor has been realized with digital signal processor (DSP TMS320F240) and the developed system has reached to compact size, flexibility, and high reliability.