Torque Ripple Minimizing of Uniform Slot Machines with Delta Rotor via Subdomain Analysis

Since the slot opening is large in the uniform slot machine, the torque ripple generated by overlapping or misaligning with the rotor cavity is remarkably large in the case of interior permanent magnet (IPM) machine. In this work, it is observed that the magnitude of torque ripple depends strongly o...

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Autores principales:	Minhyeok Lee, Yunkyung Hwang, Kwanghee Nam
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	air-gap field calculation cavity design delta-type rotor open-slot subdomain analysis torque ripple Technology T
Acceso en línea:	https://doaj.org/article/5cb88f970eea4069b6fa108bb7ecd084
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id	oai:doaj.org-article:5cb88f970eea4069b6fa108bb7ecd084
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spelling	oai:doaj.org-article:5cb88f970eea4069b6fa108bb7ecd0842021-11-11T16:06:32ZTorque Ripple Minimizing of Uniform Slot Machines with Delta Rotor via Subdomain Analysis10.3390/en142173901996-1073https://doaj.org/article/5cb88f970eea4069b6fa108bb7ecd0842021-11-01T00:00:00Zhttps://www.mdpi.com/1996-1073/14/21/7390https://doaj.org/toc/1996-1073Since the slot opening is large in the uniform slot machine, the torque ripple generated by overlapping or misaligning with the rotor cavity is remarkably large in the case of interior permanent magnet (IPM) machine. In this work, it is observed that the magnitude of torque ripple depends strongly on the phase difference between air-gap field harmonics: The ripple is minimized when the two dominant harmonic components cancel each other. Based on this fact, a condition is developed to minimize torque ripple by adjusting the <i>q</i>-flux channel width and <i>d</i>-flux barrier width. The torque ripple minimizing solution is found from a level chart made by subdomain time-stepping analysis. Finite element analysis (FEA) also gives a very similar minimizing solution. A prototype machine is manufactured, and its performances are validated through experiments.Minhyeok LeeYunkyung HwangKwanghee NamMDPI AGarticleair-gap field calculationcavity designdelta-type rotoropen-slotsubdomain analysistorque rippleTechnologyTENEnergies, Vol 14, Iss 7390, p 7390 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	air-gap field calculation cavity design delta-type rotor open-slot subdomain analysis torque ripple Technology T
spellingShingle	air-gap field calculation cavity design delta-type rotor open-slot subdomain analysis torque ripple Technology T Minhyeok Lee Yunkyung Hwang Kwanghee Nam Torque Ripple Minimizing of Uniform Slot Machines with Delta Rotor via Subdomain Analysis
description	Since the slot opening is large in the uniform slot machine, the torque ripple generated by overlapping or misaligning with the rotor cavity is remarkably large in the case of interior permanent magnet (IPM) machine. In this work, it is observed that the magnitude of torque ripple depends strongly on the phase difference between air-gap field harmonics: The ripple is minimized when the two dominant harmonic components cancel each other. Based on this fact, a condition is developed to minimize torque ripple by adjusting the <i>q</i>-flux channel width and <i>d</i>-flux barrier width. The torque ripple minimizing solution is found from a level chart made by subdomain time-stepping analysis. Finite element analysis (FEA) also gives a very similar minimizing solution. A prototype machine is manufactured, and its performances are validated through experiments.
format	article
author	Minhyeok Lee Yunkyung Hwang Kwanghee Nam
author_facet	Minhyeok Lee Yunkyung Hwang Kwanghee Nam
author_sort	Minhyeok Lee
title	Torque Ripple Minimizing of Uniform Slot Machines with Delta Rotor via Subdomain Analysis
title_short	Torque Ripple Minimizing of Uniform Slot Machines with Delta Rotor via Subdomain Analysis
title_full	Torque Ripple Minimizing of Uniform Slot Machines with Delta Rotor via Subdomain Analysis
title_fullStr	Torque Ripple Minimizing of Uniform Slot Machines with Delta Rotor via Subdomain Analysis
title_full_unstemmed	Torque Ripple Minimizing of Uniform Slot Machines with Delta Rotor via Subdomain Analysis
title_sort	torque ripple minimizing of uniform slot machines with delta rotor via subdomain analysis
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/5cb88f970eea4069b6fa108bb7ecd084
work_keys_str_mv	AT minhyeoklee torquerippleminimizingofuniformslotmachineswithdeltarotorviasubdomainanalysis AT yunkyunghwang torquerippleminimizingofuniformslotmachineswithdeltarotorviasubdomainanalysis AT kwangheenam torquerippleminimizingofuniformslotmachineswithdeltarotorviasubdomainanalysis
_version_	1718432415540576256

Torque Ripple Minimizing of Uniform Slot Machines with Delta Rotor via Subdomain Analysis

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