Improved Voltage Flux-Weakening Strategy of Permanent Magnet Synchronous Motor in High-Speed Operation

This paper presents an improved voltage flux-weakening strategy of a permanent magnet synchronous motor (PMSM) in a high-speed operation. The speed control performance using voltage flux-weakening control is not affected by the motor parameters, so it is used in various motors for high-speed operati...

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Autores principales:	Hyun-Jae Lee, Jin-Geun Shon
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	flux-weakening control high-speed operation permanent magnet synchronous motor (PMSM) voltage closed-loop control Technology T
Acceso en línea:	https://doaj.org/article/2d859624642a427d9f226d3de4ff9fc5
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spelling	oai:doaj.org-article:2d859624642a427d9f226d3de4ff9fc52021-11-25T17:25:45ZImproved Voltage Flux-Weakening Strategy of Permanent Magnet Synchronous Motor in High-Speed Operation10.3390/en142274641996-1073https://doaj.org/article/2d859624642a427d9f226d3de4ff9fc52021-11-01T00:00:00Zhttps://www.mdpi.com/1996-1073/14/22/7464https://doaj.org/toc/1996-1073This paper presents an improved voltage flux-weakening strategy of a permanent magnet synchronous motor (PMSM) in a high-speed operation. The speed control performance using voltage flux-weakening control is not affected by the motor parameters, so it is used in various motors for high-speed operations. In general, the voltage flux-weakening control uses voltage references to generate a flux axis current reference. However, there may be errors between the voltage reference and the actual voltage flowing into the motor. This causes an error in the current reference generation and reduces the efficiency of the inverter and motor due to the use of more current. In this paper, the problems that can occur due to voltage errors were analyzed through theoretical approaches and simulations, and improved voltage flux-weakening control to resolve these problems was presented. This method’s advantage is that the error between the voltage reference and the voltage applied to the motor can be minimized, and the target speed can be reached with minimum current. As a result, it was possible to increase the energy efficiency by reducing the amount of current flowing through the motor. The effect of the improved voltage-based flux-weakening control method was verified through simulations and experiments. As a result, the voltage errors were reduced by approximately 2.16% compared to the general method. Moreover, the current used in the field-weakening control region was reduced by up to 27.17% under the same torque condition.Hyun-Jae LeeJin-Geun ShonMDPI AGarticleflux-weakening controlhigh-speed operationpermanent magnet synchronous motor (PMSM)voltage closed-loop controlTechnologyTENEnergies, Vol 14, Iss 7464, p 7464 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	flux-weakening control high-speed operation permanent magnet synchronous motor (PMSM) voltage closed-loop control Technology T
spellingShingle	flux-weakening control high-speed operation permanent magnet synchronous motor (PMSM) voltage closed-loop control Technology T Hyun-Jae Lee Jin-Geun Shon Improved Voltage Flux-Weakening Strategy of Permanent Magnet Synchronous Motor in High-Speed Operation
description	This paper presents an improved voltage flux-weakening strategy of a permanent magnet synchronous motor (PMSM) in a high-speed operation. The speed control performance using voltage flux-weakening control is not affected by the motor parameters, so it is used in various motors for high-speed operations. In general, the voltage flux-weakening control uses voltage references to generate a flux axis current reference. However, there may be errors between the voltage reference and the actual voltage flowing into the motor. This causes an error in the current reference generation and reduces the efficiency of the inverter and motor due to the use of more current. In this paper, the problems that can occur due to voltage errors were analyzed through theoretical approaches and simulations, and improved voltage flux-weakening control to resolve these problems was presented. This method’s advantage is that the error between the voltage reference and the voltage applied to the motor can be minimized, and the target speed can be reached with minimum current. As a result, it was possible to increase the energy efficiency by reducing the amount of current flowing through the motor. The effect of the improved voltage-based flux-weakening control method was verified through simulations and experiments. As a result, the voltage errors were reduced by approximately 2.16% compared to the general method. Moreover, the current used in the field-weakening control region was reduced by up to 27.17% under the same torque condition.
format	article
author	Hyun-Jae Lee Jin-Geun Shon
author_facet	Hyun-Jae Lee Jin-Geun Shon
author_sort	Hyun-Jae Lee
title	Improved Voltage Flux-Weakening Strategy of Permanent Magnet Synchronous Motor in High-Speed Operation
title_short	Improved Voltage Flux-Weakening Strategy of Permanent Magnet Synchronous Motor in High-Speed Operation
title_full	Improved Voltage Flux-Weakening Strategy of Permanent Magnet Synchronous Motor in High-Speed Operation
title_fullStr	Improved Voltage Flux-Weakening Strategy of Permanent Magnet Synchronous Motor in High-Speed Operation
title_full_unstemmed	Improved Voltage Flux-Weakening Strategy of Permanent Magnet Synchronous Motor in High-Speed Operation
title_sort	improved voltage flux-weakening strategy of permanent magnet synchronous motor in high-speed operation
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/2d859624642a427d9f226d3de4ff9fc5
work_keys_str_mv	AT hyunjaelee improvedvoltagefluxweakeningstrategyofpermanentmagnetsynchronousmotorinhighspeedoperation AT jingeunshon improvedvoltagefluxweakeningstrategyofpermanentmagnetsynchronousmotorinhighspeedoperation
_version_	1718412340624359424

Improved Voltage Flux-Weakening Strategy of Permanent Magnet Synchronous Motor in High-Speed Operation

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