Modeling and control design simulations of a linear flux-switching permanent-magnet-levitated motor

For flux-switching PM (FSPM) motors, permanent magnets (PMs) are placed in the stator and not in the rotor structure as in the majority of PM motor designs. Recently, FSPM bearingless motors have been developed for special applications. The FSPM concept can be adapted to linear motors. For linear mo...

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Autores principales:	Rafal P. JASTRZEBSKI, Pekko JAATINEN, Olli PYRHÖNEN
Formato:	article
Lenguaje:	EN
Publicado:	The Japan Society of Mechanical Engineers 2017
Materias:	linear flux-switching pm motor bearingless motor self-bearing drive magnetic levitation digital control linear actuator Mechanical engineering and machinery TJ1-1570
Acceso en línea:	https://doaj.org/article/08c16b9c35bf424b9f822748674f76c5
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spelling	oai:doaj.org-article:08c16b9c35bf424b9f822748674f76c52021-11-26T07:11:27ZModeling and control design simulations of a linear flux-switching permanent-magnet-levitated motor2187-974510.1299/mej.17-00084https://doaj.org/article/08c16b9c35bf424b9f822748674f76c52017-07-01T00:00:00Zhttps://www.jstage.jst.go.jp/article/mej/4/5/4_17-00084/_pdf/-char/enhttps://doaj.org/toc/2187-9745For flux-switching PM (FSPM) motors, permanent magnets (PMs) are placed in the stator and not in the rotor structure as in the majority of PM motor designs. Recently, FSPM bearingless motors have been developed for special applications. The FSPM concept can be adapted to linear motors. For linear motors, magnets or windings located on the mover significantly decrease the complexity and cost for longer tracks. Following the ideas from the rotating bearingless motors, this work focuses on combining the motoring and levitation functionalities in a linear machine. Still, to separate the controls of air gap and torque (thrust), two sets of windings or multiphase windings are required for both rotating FSPM and linear PM machines. A linear FSPM-levitated motor solution, which integrates the magnets, winding structure, and all the driving and control electronics on the mover is desired in many applications. However, because of electromagnetic unbalances, the machine design is intertwined with the control limitations and requirements. We propose a modeling methodology for accurate derivation of the machine dynamic and static force parameters as a function of air gap, control currents, and track position in an extended operating range. Model-based control simulations based on accurate plant models determine the achievable machine performance and levitation limitations. The design and modeling methodology is universal and can be applied to various PM bearingless motors and magnetic levitation systems. In the case study of a linear FSPM-levitated motor (mover), air gap control is possible in a manner equivalent to classical active magnetic bearings, where it is linearized and independent of the thrust control.Rafal P. JASTRZEBSKIPekko JAATINENOlli PYRHÖNENThe Japan Society of Mechanical Engineersarticlelinear flux-switching pm motorbearingless motorself-bearing drivemagnetic levitationdigital controllinear actuatorMechanical engineering and machineryTJ1-1570ENMechanical Engineering Journal, Vol 4, Iss 5, Pp 17-00084-17-00084 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	linear flux-switching pm motor bearingless motor self-bearing drive magnetic levitation digital control linear actuator Mechanical engineering and machinery TJ1-1570
spellingShingle	linear flux-switching pm motor bearingless motor self-bearing drive magnetic levitation digital control linear actuator Mechanical engineering and machinery TJ1-1570 Rafal P. JASTRZEBSKI Pekko JAATINEN Olli PYRHÖNEN Modeling and control design simulations of a linear flux-switching permanent-magnet-levitated motor
description	For flux-switching PM (FSPM) motors, permanent magnets (PMs) are placed in the stator and not in the rotor structure as in the majority of PM motor designs. Recently, FSPM bearingless motors have been developed for special applications. The FSPM concept can be adapted to linear motors. For linear motors, magnets or windings located on the mover significantly decrease the complexity and cost for longer tracks. Following the ideas from the rotating bearingless motors, this work focuses on combining the motoring and levitation functionalities in a linear machine. Still, to separate the controls of air gap and torque (thrust), two sets of windings or multiphase windings are required for both rotating FSPM and linear PM machines. A linear FSPM-levitated motor solution, which integrates the magnets, winding structure, and all the driving and control electronics on the mover is desired in many applications. However, because of electromagnetic unbalances, the machine design is intertwined with the control limitations and requirements. We propose a modeling methodology for accurate derivation of the machine dynamic and static force parameters as a function of air gap, control currents, and track position in an extended operating range. Model-based control simulations based on accurate plant models determine the achievable machine performance and levitation limitations. The design and modeling methodology is universal and can be applied to various PM bearingless motors and magnetic levitation systems. In the case study of a linear FSPM-levitated motor (mover), air gap control is possible in a manner equivalent to classical active magnetic bearings, where it is linearized and independent of the thrust control.
format	article
author	Rafal P. JASTRZEBSKI Pekko JAATINEN Olli PYRHÖNEN
author_facet	Rafal P. JASTRZEBSKI Pekko JAATINEN Olli PYRHÖNEN
author_sort	Rafal P. JASTRZEBSKI
title	Modeling and control design simulations of a linear flux-switching permanent-magnet-levitated motor
title_short	Modeling and control design simulations of a linear flux-switching permanent-magnet-levitated motor
title_full	Modeling and control design simulations of a linear flux-switching permanent-magnet-levitated motor
title_fullStr	Modeling and control design simulations of a linear flux-switching permanent-magnet-levitated motor
title_full_unstemmed	Modeling and control design simulations of a linear flux-switching permanent-magnet-levitated motor
title_sort	modeling and control design simulations of a linear flux-switching permanent-magnet-levitated motor
publisher	The Japan Society of Mechanical Engineers
publishDate	2017
url	https://doaj.org/article/08c16b9c35bf424b9f822748674f76c5
work_keys_str_mv	AT rafalpjastrzebski modelingandcontroldesignsimulationsofalinearfluxswitchingpermanentmagnetlevitatedmotor AT pekkojaatinen modelingandcontroldesignsimulationsofalinearfluxswitchingpermanentmagnetlevitatedmotor AT ollipyrhonen modelingandcontroldesignsimulationsofalinearfluxswitchingpermanentmagnetlevitatedmotor
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Modeling and control design simulations of a linear flux-switching permanent-magnet-levitated motor

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