Effect Of Slot Opening To Permanent Magnet Linear Generator Performance

Eivan, Kelvin (2018) Effect Of Slot Opening To Permanent Magnet Linear Generator Performance. Project Report. Universiti Teknikal Malaysia Melaka, Melaka, Malaysia. (Submitted)

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Abstract

This project were present to compare effect of slot opening to permanent magnet linear generator performance under the three phase and five phase topology. This generator use neodymium iron boron (NdFeB) as a permanent magnet (PM) where it attached to the mover. This arrangement of permanent magnet is called Halbach configuration. Objective of this research are to analyse the 15 slot 14 pole PMLG using FEM software and compare the performance of 15 slot 14 pole using three and five phase system. In order to accomplish the objective, modelling of 15 slot 14 pole of the PMLG need to be draw using the SolidWork with different size of slot opening. After that, all the model will be transfer to the FEM software to undergo simulation. The speed of the PMLG that been set inside simulation is from 0.5m/s to 2.0m/s with unloaded condition. For this FYP, the result and simulation is tested on different size of slot opening with unloaded condition for three phase and five phase. The parameter size of slot opening height, ht are 0mm to 1mm while for slot opening length, lt are tested from 1mm to 12mm. Based on the result, PMLG produced different flux linkage at different phase system but show same reading of flux linkage at different speed condition. In aspect of cogging force, PMLG with different speed condition and different phase will show almost similar reading of cogging force but this cogging force will be different if the slot opening of the PMLG is change. For output voltage (Vrms), three phase PMLG will produced higher voltage compare to five phase PMLG and the voltage produce by the both PMLG will decrease if the slot opening length is increase. Lastly, lower reading of THD that been produced by the PMLG can be achieved if the slot opening length set at 7mm and 8mm

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