Cogging force investigation of a free piston permanent magnet linear generator

I.I. Abdalla, A.E.Z. Zainal, N.A. Ramlan, Firmansyah, A.R.A. Aziz, M.R. Heikal

Research output: Chapter in Book/Conference proceeding with ISSN or ISBNConference contribution with ISSN or ISBN

Abstract

Better performance and higher efficiency of the vehicles can be achieved by using free piston engine, in which the piston is connected directly to the linear generator and waiving of any mechanical means. The free piston engine has the ability to overcome or reduce many of the challenges, such as the carbon dioxide (CO2) emission and fossil fuel consumption. The cogging force produces undesired vibration and acoustic noise in the generator. However, the cogging force must be minimized as much as possible, in order to have a high performance. This paper studies the effects of ferromagnetic materials on the cogging force of the permanent magnet linear generator (PMLG) to be used in a free piston engine using nonlinear finite-element analysis (FEA) under ANSYS Maxwell. The comparisons have been established for the cogging force of the PMLG under various translator velocities and three different ferromagnetic materials for the stator core, namely, Silicon Steel laminations, Mild Steel and Somaloy. It has been shown that the PMLG with a stator core made of Somaloy has a lower cogging force among them. Furthermore, the induced voltage of the PMLG at different accelerations has been studied. It is found that the PMLG with Mild Steel and Somaloy, respectively give larger induced voltage. Moreover, as the translator speed increase the induced voltage increased.

Original languageEnglish
Title of host publicationIOP Conference Series
Subtitle of host publicationMaterials Science and Engineering
PublisherIOP
Volume257
DOIs
Publication statusPublished - 1 Nov 2017
Event4th International Conference on Mechanical Engineering Research, ICMER 2017 - Kuantan, Pahang, Malaysia
Duration: 1 Aug 20172 Aug 2017

Publication series

NameIOP Conference Series: Materials Science and Engineering
PublisherIOP
Volume257
ISSN (Print)1757-8981
ISSN (Electronic)1757-899X

Conference

Conference4th International Conference on Mechanical Engineering Research, ICMER 2017
CountryMalaysia
CityKuantan, Pahang
Period1/08/172/08/17

Bibliographical note

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    Abdalla, I. I., Zainal, A. E. Z., Ramlan, N. A., Firmansyah, Aziz, A. R. A., & Heikal, M. R. (2017). Cogging force investigation of a free piston permanent magnet linear generator. In IOP Conference Series: Materials Science and Engineering (Vol. 257). [012055] (IOP Conference Series: Materials Science and Engineering; Vol. 257). IOP. https://doi.org/10.1088/1757-899X/257/1/012055