The influence analysis of thrust and gap magnetic field of a down-to-hole tubular permanent magnet linear hammer due to high temperature in deep hole

Wu, T; Fu, K; Zhu, J; Lei, G

The influence analysis of thrust and gap magnetic field of a down-to-hole tubular permanent magnet linear hammer due to high temperature in deep hole

Wu, T Fu, K Zhu, J

Lei, G

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Publication Type:: Conference Proceeding
Citation:: 2017 20th International Conference on Electrical Machines and Systems, ICEMS 2017, 2017
Issue Date:: 2017-10-02

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Field	Value	Language
dc.contributor.author	Wu, T	en_US
dc.contributor.author	Fu, K	en_US
dc.contributor.author	Zhu, J https://orcid.org/0000-0002-9763-4047	en_US
dc.contributor.author	Lei, G https://orcid.org/0000-0002-8369-6802	en_US
dc.date.issued	2017-10-02	en_US
dc.identifier.citation	2017 20th International Conference on Electrical Machines and Systems, ICEMS 2017, 2017	en_US
dc.identifier.isbn	9781538632468	en_US
dc.identifier.uri	http://hdl.handle.net/10453/125912
dc.description.abstract	© 2017 IEEE. Recently a novel electric hammer driven by tubular permanent magnet linear synchronous motor (TPMLSM) has arouse great interest among researchers in the field of deep drilling for its distinctive advantages compared with hydraulic and pneumatic hammers. The working temperature in deep down-hole is relatively high, so the research of the influence of high temperature in deep hole on the electromagnetic thrust of the linear motor is very important. In this paper, a numerical electromagnetic calculation model of the thrust of the hammer was established to analyze the influence as a result of the loss of permanent magnet, coil resistance variation and coil volume expansion due to the temperature variation from 20°C to 300°C. The calculated results showed from 20°C to 300°C, the increase of the copper loss reduced the thrust by 31%, the loss of permanent magnets reduced the thrust by 18%. And the effect of the air-gap variation by thermal expansion can be neglected.	en_US
dc.relation.ispartof	2017 20th International Conference on Electrical Machines and Systems, ICEMS 2017	en_US
dc.relation.isbasedon	10.1109/ICEMS.2017.8056381	en_US
dc.rights	info:eu-repo/semantics/closedAccess
dc.title	The influence analysis of thrust and gap magnetic field of a down-to-hole tubular permanent magnet linear hammer due to high temperature in deep hole	en_US
dc.type	Conference Proceeding
utslib.for	0906 Electrical and Electronic Engineering	en_US
pubs.embargo.period	Not known	en_US
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology/School of Electrical and Data Engineering
pubs.organisational-group	/University of Technology Sydney/Strength - CCET - Centre for Clean Energy Technology
utslib.copyright.status	closed_access	*
pubs.publication-status	Published	en_US

Abstract:

© 2017 IEEE. Recently a novel electric hammer driven by tubular permanent magnet linear synchronous motor (TPMLSM) has arouse great interest among researchers in the field of deep drilling for its distinctive advantages compared with hydraulic and pneumatic hammers. The working temperature in deep down-hole is relatively high, so the research of the influence of high temperature in deep hole on the electromagnetic thrust of the linear motor is very important. In this paper, a numerical electromagnetic calculation model of the thrust of the hammer was established to analyze the influence as a result of the loss of permanent magnet, coil resistance variation and coil volume expansion due to the temperature variation from 20°C to 300°C. The calculated results showed from 20°C to 300°C, the increase of the copper loss reduced the thrust by 31%, the loss of permanent magnets reduced the thrust by 18%. And the effect of the air-gap variation by thermal expansion can be neglected.

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http://hdl.handle.net/10453/125912