Modelling and analysis of sensorless permanent magnet synchronous motor by using fundamental excitation

Anuar, Siti Zahrah (2016) Modelling and analysis of sensorless permanent magnet synchronous motor by using fundamental excitation. Project Report. Universiti Teknikal Malaysia Melaka, Melaka, Malaysia. (Submitted)

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Abstract

Over the past few years, the usage of sensorless motor drive has been widely used in various servo applications for its reliability, lower cost and small size. The most common type of motor drive used is Permanent Magnet Synchronous Motor (PMSM). This project presents the sensorless PMSM by using fundamental excitation. Permanent Magnet Synchronous Motor is used because during transformation of abc to direct and quadrature (d-q), the sinusoidal varying inductance will become constant in d-q frame. In which show that PMSM is suitable to be used in d-q system. However the operation of PMSM requires sensor to determine the rotor position. The problem about sensor is the high cost, machine size and it will decrease the reliability of the system. Besides that, research being done about sensorless PMSM experimentally is less compared to motor drive with sensor. Therefore sensorless method is presented to overcome the problems mentioned. Sensorless motor drives uses complex Clarke’s and Park’s transform to determine the shaft positions, thus making it more reasonable to be used with the PMSM. The aim of this study is to model, develop, simulate and investigate the behavior of sensorless Permanent Magnet Synchronous Motor drives using Fundamental Excitation. The results prove that the speed and position estimator is capable to give output response near to the actual speed.

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