Investigation on Maximum Electromagnetic Torque of Permanent-Magnet Synchronous Machines

Many application fields need motors that could output large torque in a short span of time such as missile and aircraft, but larger torque needs larger volume that could influence the system performance. Therefore, promoting the motor's maximum torque with small volume is the new challenge for...

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Main Authors: Cao Jiwei, Zhang Chengming, Liu Jiaxi, Li Liyi
Format: Article
Language:English
Published: IEEE 2020-01-01
Series:IEEE Access
Subjects:
Online Access:https://ieeexplore.ieee.org/document/8887162/
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author Cao Jiwei
Zhang Chengming
Liu Jiaxi
Li Liyi
author_facet Cao Jiwei
Zhang Chengming
Liu Jiaxi
Li Liyi
author_sort Cao Jiwei
collection DOAJ
description Many application fields need motors that could output large torque in a short span of time such as missile and aircraft, but larger torque needs larger volume that could influence the system performance. Therefore, promoting the motor's maximum torque with small volume is the new challenge for motors. So, this paper presents a method for analyzing maximum electromechanical torque (with rate speed) of PMSM without the consideration of thermal effect produced by copper loss. This paper also discusses the factors that influence maximum torque of PMSM under the condition of i<sub>d</sub> = 0 control mode. A function between motor torque and the inner parameters is first obtained under the constraint of electrical and magnetic saturation. For verifying the accuracy of the function and its results, the characteristics of the series motors with different inner parameters that are obtained in the function are testified by finite element method (FEM) software. Finally, a prototype motor is selected to be manufactured to verify the analysis result. Based on the torque experiments result, it could verify the accuracy of the function that describes the rule of PMSM maximum torque. Based on FEM software and prototype test verifying, the method could supply the theoretical support for PMSM maximum torque design.
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spelling doaj.art-8f2958c81ffb495d8071ed00af6e6f452022-12-21T23:48:34ZengIEEEIEEE Access2169-35362020-01-01811301111302010.1109/ACCESS.2019.29504738887162Investigation on Maximum Electromagnetic Torque of Permanent-Magnet Synchronous MachinesCao Jiwei0https://orcid.org/0000-0002-3029-8819Zhang Chengming1https://orcid.org/0000-0003-4920-9481Liu Jiaxi2https://orcid.org/0000-0002-7639-1285Li Liyi3https://orcid.org/0000-0002-6382-2891Electrical Engineering Department, Harbin Institute of Technology, Harbin, ChinaElectrical Engineering Department, Harbin Institute of Technology, Harbin, ChinaElectrical Engineering Department, Harbin Institute of Technology, Harbin, ChinaElectrical Engineering Department, Harbin Institute of Technology, Harbin, ChinaMany application fields need motors that could output large torque in a short span of time such as missile and aircraft, but larger torque needs larger volume that could influence the system performance. Therefore, promoting the motor's maximum torque with small volume is the new challenge for motors. So, this paper presents a method for analyzing maximum electromechanical torque (with rate speed) of PMSM without the consideration of thermal effect produced by copper loss. This paper also discusses the factors that influence maximum torque of PMSM under the condition of i<sub>d</sub> = 0 control mode. A function between motor torque and the inner parameters is first obtained under the constraint of electrical and magnetic saturation. For verifying the accuracy of the function and its results, the characteristics of the series motors with different inner parameters that are obtained in the function are testified by finite element method (FEM) software. Finally, a prototype motor is selected to be manufactured to verify the analysis result. Based on the torque experiments result, it could verify the accuracy of the function that describes the rule of PMSM maximum torque. Based on FEM software and prototype test verifying, the method could supply the theoretical support for PMSM maximum torque design.https://ieeexplore.ieee.org/document/8887162/Permanent magnet machinesfinite element analysisnumerical analysistorque
spellingShingle Cao Jiwei
Zhang Chengming
Liu Jiaxi
Li Liyi
Investigation on Maximum Electromagnetic Torque of Permanent-Magnet Synchronous Machines
IEEE Access
Permanent magnet machines
finite element analysis
numerical analysis
torque
title Investigation on Maximum Electromagnetic Torque of Permanent-Magnet Synchronous Machines
title_full Investigation on Maximum Electromagnetic Torque of Permanent-Magnet Synchronous Machines
title_fullStr Investigation on Maximum Electromagnetic Torque of Permanent-Magnet Synchronous Machines
title_full_unstemmed Investigation on Maximum Electromagnetic Torque of Permanent-Magnet Synchronous Machines
title_short Investigation on Maximum Electromagnetic Torque of Permanent-Magnet Synchronous Machines
title_sort investigation on maximum electromagnetic torque of permanent magnet synchronous machines
topic Permanent magnet machines
finite element analysis
numerical analysis
torque
url https://ieeexplore.ieee.org/document/8887162/
work_keys_str_mv AT caojiwei investigationonmaximumelectromagnetictorqueofpermanentmagnetsynchronousmachines
AT zhangchengming investigationonmaximumelectromagnetictorqueofpermanentmagnetsynchronousmachines
AT liujiaxi investigationonmaximumelectromagnetictorqueofpermanentmagnetsynchronousmachines
AT liliyi investigationonmaximumelectromagnetictorqueofpermanentmagnetsynchronousmachines