Analysis and Suppression of the Eddy Current Damping Force of the Cooling Plate of a Permanent Magnet Linear Motor

This paper proposes a new symmetrical cooling plate. It can significantly reduce the eddy current damping force of the water-cooled metal plate. To increase the thrust density of coreless permanent magnet linear motors, cooling plates must be placed on the armature surface to reduce the temperature...

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Autores principales:	Mingyi Wang, Qinwei Sun, Kai Kang, Liyi Li
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	permanent magnet synchronous linear motor water-cooled plate eddy current damping force Mathematics QA1-939
Acceso en línea:	https://doaj.org/article/aa8da1fc8bad435f9d68dd033d52e53a
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spelling	oai:doaj.org-article:aa8da1fc8bad435f9d68dd033d52e53a2021-11-25T19:06:08ZAnalysis and Suppression of the Eddy Current Damping Force of the Cooling Plate of a Permanent Magnet Linear Motor10.3390/sym131120252073-8994https://doaj.org/article/aa8da1fc8bad435f9d68dd033d52e53a2021-10-01T00:00:00Zhttps://www.mdpi.com/2073-8994/13/11/2025https://doaj.org/toc/2073-8994This paper proposes a new symmetrical cooling plate. It can significantly reduce the eddy current damping force of the water-cooled metal plate. To increase the thrust density of coreless permanent magnet linear motors, cooling plates must be placed on the armature surface to reduce the temperature rise that is caused by high electrical density. However, when the motor moves at a high speed, extra damping force will be generated in the cooling plate, which affects the thrust quality and precision of the permanent magnet linear motor. In this study, we elaborate the mechanism of damping force generation in the cooling plate and propose a new symmetrical cooling plate with low damping force. This paper introduces the topology of a linear motor cooling system and presents an analytical model of the eddy current distribution of a water-cooled plate. The surface current equivalence method is used to calculate the magnitude of the damping force. A new, symmetrical water-cooled plate design method is proposed. This method uses the eddy current vector synthesis principle to cancel the eddy currents that are generated in each region, and to reduce the damping force that is generated in the cooling plate during motor motion. Finally, a 3D simulation model of the motor system is established and an experimental platform is built. The correctness of the analytical model and the effectiveness of the cooling plate design are verified using a simulation and an experiment.Mingyi WangQinwei SunKai KangLiyi LiMDPI AGarticlepermanent magnet synchronous linear motorwater-cooled plateeddy current damping forceMathematicsQA1-939ENSymmetry, Vol 13, Iss 2025, p 2025 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	permanent magnet synchronous linear motor water-cooled plate eddy current damping force Mathematics QA1-939
spellingShingle	permanent magnet synchronous linear motor water-cooled plate eddy current damping force Mathematics QA1-939 Mingyi Wang Qinwei Sun Kai Kang Liyi Li Analysis and Suppression of the Eddy Current Damping Force of the Cooling Plate of a Permanent Magnet Linear Motor
description	This paper proposes a new symmetrical cooling plate. It can significantly reduce the eddy current damping force of the water-cooled metal plate. To increase the thrust density of coreless permanent magnet linear motors, cooling plates must be placed on the armature surface to reduce the temperature rise that is caused by high electrical density. However, when the motor moves at a high speed, extra damping force will be generated in the cooling plate, which affects the thrust quality and precision of the permanent magnet linear motor. In this study, we elaborate the mechanism of damping force generation in the cooling plate and propose a new symmetrical cooling plate with low damping force. This paper introduces the topology of a linear motor cooling system and presents an analytical model of the eddy current distribution of a water-cooled plate. The surface current equivalence method is used to calculate the magnitude of the damping force. A new, symmetrical water-cooled plate design method is proposed. This method uses the eddy current vector synthesis principle to cancel the eddy currents that are generated in each region, and to reduce the damping force that is generated in the cooling plate during motor motion. Finally, a 3D simulation model of the motor system is established and an experimental platform is built. The correctness of the analytical model and the effectiveness of the cooling plate design are verified using a simulation and an experiment.
format	article
author	Mingyi Wang Qinwei Sun Kai Kang Liyi Li
author_facet	Mingyi Wang Qinwei Sun Kai Kang Liyi Li
author_sort	Mingyi Wang
title	Analysis and Suppression of the Eddy Current Damping Force of the Cooling Plate of a Permanent Magnet Linear Motor
title_short	Analysis and Suppression of the Eddy Current Damping Force of the Cooling Plate of a Permanent Magnet Linear Motor
title_full	Analysis and Suppression of the Eddy Current Damping Force of the Cooling Plate of a Permanent Magnet Linear Motor
title_fullStr	Analysis and Suppression of the Eddy Current Damping Force of the Cooling Plate of a Permanent Magnet Linear Motor
title_full_unstemmed	Analysis and Suppression of the Eddy Current Damping Force of the Cooling Plate of a Permanent Magnet Linear Motor
title_sort	analysis and suppression of the eddy current damping force of the cooling plate of a permanent magnet linear motor
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/aa8da1fc8bad435f9d68dd033d52e53a
work_keys_str_mv	AT mingyiwang analysisandsuppressionoftheeddycurrentdampingforceofthecoolingplateofapermanentmagnetlinearmotor AT qinweisun analysisandsuppressionoftheeddycurrentdampingforceofthecoolingplateofapermanentmagnetlinearmotor AT kaikang analysisandsuppressionoftheeddycurrentdampingforceofthecoolingplateofapermanentmagnetlinearmotor AT liyili analysisandsuppressionoftheeddycurrentdampingforceofthecoolingplateofapermanentmagnetlinearmotor
_version_	1718410298610679808

Analysis and Suppression of the Eddy Current Damping Force of the Cooling Plate of a Permanent Magnet Linear Motor

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