Next Article in Journal
Problems in Assessment of Novel Biopotential Front-End with Dry Electrode: A Brief Review
Next Article in Special Issue
A Complete Design of a Rare Earth Metal-Free Permanent Magnet Generator
Previous Article in Journal
The Multiple Unmanned Air Vehicle Persistent Surveillance Problem: A Review
Machines 2014, 2(1), 73-86; doi:10.3390/machines2010073
Article

Detailed Study of Closed Stator Slots for a Direct-Driven Synchronous Permanent Magnet Linear Wave Energy Converter

*  and
Received: 3 December 2013; in revised form: 9 January 2014 / Accepted: 16 January 2014 / Published: 23 January 2014
(This article belongs to the Special Issue Advances in Machinery for Renewable Power Generation)
View Full-Text   |   Download PDF [1724 KB, uploaded 23 January 2014]   |   Browse Figures
Abstract: The aim of this paper is to analyze how a permanent magnet linear generator for wave power behaves when the stator slots are closed. The usual design of stator geometry is to use open slots to maintain a low magnetic leakage flux between the stator teeth. By doing this, harmonics are induced in the magnetic flux density in the air-gap due to slotting. The closed slots are designed to cause saturation, to keep the permeability low. This reduces the slot harmonics in the magnetic flux density, but will also increase the flux leakage between the stator teeth. An analytical model has been created to study the flux through the closed slots and the result compared with finite element simulations. The outcome shows a reduction of the cogging force and a reduction of the harmonics of the magnetic flux density in the air-gap. It also shows a small increase of the total magnetic flux entering the stator and an increased magnetic flux leakage through the closed slots.
Keywords: wave energy converter; permanent magnet; closed stator slots; magnetic flux wave energy converter; permanent magnet; closed stator slots; magnetic flux
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Export to BibTeX |
EndNote


MDPI and ACS Style

Lejerskog, E.; Leijon, M. Detailed Study of Closed Stator Slots for a Direct-Driven Synchronous Permanent Magnet Linear Wave Energy Converter. Machines 2014, 2, 73-86.

AMA Style

Lejerskog E, Leijon M. Detailed Study of Closed Stator Slots for a Direct-Driven Synchronous Permanent Magnet Linear Wave Energy Converter. Machines. 2014; 2(1):73-86.

Chicago/Turabian Style

Lejerskog, Erik; Leijon, Mats. 2014. "Detailed Study of Closed Stator Slots for a Direct-Driven Synchronous Permanent Magnet Linear Wave Energy Converter." Machines 2, no. 1: 73-86.


Machines EISSN 2075-1702 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert