Study on characteristic of the permanent magnet linear synchronous motor

Alloha, Hadi (2021) Study on characteristic of the permanent magnet linear synchronous motor. Project Report. Universiti Teknikal Malaysia Melaka, Melaka, Malaysia. (Submitted)

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Abstract

Conventionally, linear motion produced by electric machinery requires a motion translation process. Consequently, a lot of issues emerge such as slower time response and high maintenance due to the mechanical parts of the process. All of these constitute to a complex and complicated system. With the invention of linear motor, these drawbacks are completely ruled out. With no additional components to produce linear motion, linear motor has a lot of advantages. This project aims to study the characteristic of a previously built Permanent Magnet Linear Synchronous Motor (PMLSM). The scopes of this project are to measure the characteristics of the PMLSM such as static thrust, frequency characteristic as well as the current response. A 3-phase inverter was designed and fabricated to be used for the current response measurement. Unfortunately, due to time constraint the 3-phase inverter could not be tested out which then impeded the measurement for the PMLSM current response. The current response was only measured through simulation. The simulation revealed that the current response decreases as inverter frequency increases. It was also found out that the static thrust of the PMLSM is generally consistent when compared against the simulation profile. From the frequency characteristics measurement, it is suggested that the PMLSM to be supplied with frequency not more than 100 Hz as the value of resistance of the motor coils is much lower and stable within this range. This research will contribute to the whole future development of the project where the performance of the PMLSM is determined and later can be decided if modification to the motor design will be needed or not. Ultimately, with all the characteristics of the PMLSM known, a motor driver can be developed.

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