Abstract
Magnetic lead screw (MLS) owns many merits for wave energy generation system applications. However, to resist the huge, instantaneous impact of the waves, the radius of the mover and rotor of the MLS should be large to obtain sufficient stiffness. And the length of the mover needs to match the height of the wave to transfer as much power as possible. Therefore, a great many of permanent magnets (PMs) will be consumed when size of the traditional MLS is huge, and the maximum thrust force would be much greater than the wave excitation force. This will lead to the waste of PMs and poor starting performance. Also, the ideal spiral PMs are quite difficult to manufacture. Therefore, in this paper, a novel type single-helix MLS, which adopt single spiral PMs on the surface of the rotor and translator, is proposed to save PM consumption on the premise of meeting the demand of wave power generation system. The new structure provides a new choice for the application of magnetic screw in wave power system. The performance and the design features of the proposed novel MLS is analyzed through the three-dimensional finite-element method and compared with the traditional MLS and reluctance-based MLS. In addition, a simple spiral PM installation method based on discretized PMs for the proposed MLS is also proposed in this paper.
| Original language | English |
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| Title of host publication | Proceedings - IECON 2020 : 46th Annual Conference of the IEEE Industrial Electronics Society |
| Number of pages | 6 |
| Publisher | IEEE |
| Publication date | 18 Oct 2020 |
| Pages | 2807-2812 |
| Article number | 9255013 |
| ISBN (Electronic) | 9781728154145 |
| DOIs | |
| Publication status | Published - 18 Oct 2020 |
| Event | 46th Annual Conference of the IEEE Industrial Electronics Society, IECON 2020 - Virtual, Singapore, Singapore Duration: 18 Oct 2020 → 21 Oct 2020 http://www.conferences.academicjournals.org/cat/physical-sciences/46th-annual-conference-of-the-ieee-industrial-electronics-society |
Conference
| Conference | 46th Annual Conference of the IEEE Industrial Electronics Society, IECON 2020 |
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| Country/Territory | Singapore |
| City | Virtual, Singapore |
| Period | 18/10/2020 → 21/10/2020 |
| Sponsor | IEEE Industrial Electronics Society (IES), SPECS - Smart Grid + Power Electronics Consortium Singapore, The Institute of Electrical and Electronics Engineers (IEEE) |
| Internet address |
| Series | Proceedings of the Annual Conference of the IEEE Industrial Electronics Society |
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| ISSN | 1553-572X |
Bibliographical note
Publisher Copyright:© 2020 IEEE.
Copyright:
Copyright 2020 Elsevier B.V., All rights reserved.
Keywords
- finite element analysis (FEA)
- linear actuator
- magnetic lead screw (MLS)
- permanent magnet (PM)