Design and Implementation for a Novel Matrix Converter Feeding PMSM Drive System

• Main Authors: Der-Fa Chen, 陳德發
• Other Authors: Tian-Hua Liu
• Format: Others
• Language: zh-TW
• Published: 2000
• Online Access: http://ndltd.ncl.edu.tw/handle/87764254041874008496

博士 === 國立臺灣科技大學 === 電機工程系 === 89 === This dissertation proposes a novel method for the design and implementation of a matrix converter PMSM drive system. In the dissertation, a neural-network current-regulated switching strategy and a two-degree-of-freedom controller design are proposed. By using this new switching strategy, the current harmonics of the system can be effectively reduced. In addition, by using the two-degree-of-freedom controller, both good tracking responses and load disturbance responses are obtained. The parameters of this controller are calculated by using frequency-domain optimization technique, and only a simple algebraic computation is required. The design procedures can be applied to an adjustable speed and a position control system. In addition, the realization of the controller is very simple. In order to extend the range of the adjustable speed, this dissertation studies the torque pulsation improvement at low speed and the flux-weakening control at high speed. All the control loops, including current-loop, speed-loop, and position-loop, are implemented by a 32-bit TMS320C40 digital signal processor. The hardware circuit is very simple. As a result, a fully digital control system is obtained. By using the proposed novel method, a precision position control system can be achieved and a widely adjustable speed range from 1 to 2700 r.p.m. can be obtained. Several experimental results are shown to validate the theoretical analysis.