Identification of design rules for interior PM motors with different cooling systems

Alireza Fatemi; Dan M. Ionel; Nabeel A.O. Demerdash

doi:10.1109/IEMDC.2015.7409218

Identification of design rules for interior PM motors with different cooling systems

Alireza Fatemi, Dan M. Ionel, Nabeel A.O. Demerdash

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

5 Scopus citations

Abstract

The conventional scaling rules for the optimal design of electric machines are best suited for naturally cooled machines with stator winding current densities less than 4A/mm2. In this paper, through a comprehensive sensitivity analysis, first, it is demonstrated that the correlations between some geometric variables and the performance metrics of interior permanent magnet (IPM) motors vary significantly with respect to the stator winding current density. For this purpose, three current densities are selected so as to approximately account for naturally cooled, fan-cooled and liquid-cooled machines. Subsequently, a parameterized IPM motor is optimized at these current densities through a large-scale design optimization algorithm by evaluating a total of 20,000 design candidates. The 100 best designs from each group are then identified and extracted to investigate the scaling rules for the optimal design of such IPM motors with different cooling systems. The outcomes of the study are in correspondence with the conventional design principles for naturally cooled machines. Nevertheless, it is illustrated that these rules vary for fan-cooled and liquid-cooled machines owing to the increased ampere loading, and also heavy saturation of the magnetic core in such machines. A configuration of a 50 hp, 48-slot, 8-pole IPM motor with a single-layer v-type magnet is used as the benchmark of this study.

Original language	English
Title of host publication	Proceedings - 2015 IEEE International Electric Machines and Drives Conference, IEMDC 2015
Pages	1228-1234
Number of pages	7
ISBN (Electronic)	9781479979417
DOIs	https://doi.org/10.1109/IEMDC.2015.7409218
State	Published - Feb 16 2016
Event	IEEE International Electric Machines and Drives Conference, IEMDC 2015 - Coeur d'Alene, United States Duration: May 11 2015 → May 13 2015

Publication series

Name	Proceedings - 2015 IEEE International Electric Machines and Drives Conference, IEMDC 2015

Conference

Conference	IEEE International Electric Machines and Drives Conference, IEMDC 2015
Country/Territory	United States
City	Coeur d'Alene
Period	5/11/15 → 5/13/15

Bibliographical note

Publisher Copyright:
© 2015 IEEE.

Keywords

Machine modelling and general design
computer aided design
design of experiments
design optimization
finite-element analysis
permanent magnet machines
sensitivity analysis

ASJC Scopus subject areas

Electrical and Electronic Engineering
Mechanical Engineering
Automotive Engineering

Access to Document

10.1109/IEMDC.2015.7409218

Cite this

Fatemi, A., Ionel, D. M., & Demerdash, N. A. O. (2016). Identification of design rules for interior PM motors with different cooling systems. In Proceedings - 2015 IEEE International Electric Machines and Drives Conference, IEMDC 2015 (pp. 1228-1234). Article 7409218 (Proceedings - 2015 IEEE International Electric Machines and Drives Conference, IEMDC 2015). https://doi.org/10.1109/IEMDC.2015.7409218

@inproceedings{0b90d1e8a61844348972f77b6155224e,

title = "Identification of design rules for interior PM motors with different cooling systems",

abstract = "The conventional scaling rules for the optimal design of electric machines are best suited for naturally cooled machines with stator winding current densities less than 4A/mm2. In this paper, through a comprehensive sensitivity analysis, first, it is demonstrated that the correlations between some geometric variables and the performance metrics of interior permanent magnet (IPM) motors vary significantly with respect to the stator winding current density. For this purpose, three current densities are selected so as to approximately account for naturally cooled, fan-cooled and liquid-cooled machines. Subsequently, a parameterized IPM motor is optimized at these current densities through a large-scale design optimization algorithm by evaluating a total of 20,000 design candidates. The 100 best designs from each group are then identified and extracted to investigate the scaling rules for the optimal design of such IPM motors with different cooling systems. The outcomes of the study are in correspondence with the conventional design principles for naturally cooled machines. Nevertheless, it is illustrated that these rules vary for fan-cooled and liquid-cooled machines owing to the increased ampere loading, and also heavy saturation of the magnetic core in such machines. A configuration of a 50 hp, 48-slot, 8-pole IPM motor with a single-layer v-type magnet is used as the benchmark of this study.",

keywords = "Machine modelling and general design, computer aided design, design of experiments, design optimization, finite-element analysis, permanent magnet machines, sensitivity analysis",

author = "Alireza Fatemi and Ionel, {Dan M.} and Demerdash, {Nabeel A.O.}",

note = "Publisher Copyright: {\textcopyright} 2015 IEEE.; IEEE International Electric Machines and Drives Conference, IEMDC 2015 ; Conference date: 11-05-2015 Through 13-05-2015",

year = "2016",

month = feb,

day = "16",

doi = "10.1109/IEMDC.2015.7409218",

language = "English",

series = "Proceedings - 2015 IEEE International Electric Machines and Drives Conference, IEMDC 2015",

pages = "1228--1234",

booktitle = "Proceedings - 2015 IEEE International Electric Machines and Drives Conference, IEMDC 2015",

}

Fatemi, A, Ionel, DM & Demerdash, NAO 2016, Identification of design rules for interior PM motors with different cooling systems. in Proceedings - 2015 IEEE International Electric Machines and Drives Conference, IEMDC 2015., 7409218, Proceedings - 2015 IEEE International Electric Machines and Drives Conference, IEMDC 2015, pp. 1228-1234, IEEE International Electric Machines and Drives Conference, IEMDC 2015, Coeur d'Alene, United States, 5/11/15. https://doi.org/10.1109/IEMDC.2015.7409218

Identification of design rules for interior PM motors with different cooling systems. / Fatemi, Alireza; Ionel, Dan M.; Demerdash, Nabeel A.O.
Proceedings - 2015 IEEE International Electric Machines and Drives Conference, IEMDC 2015. 2016. p. 1228-1234 7409218 (Proceedings - 2015 IEEE International Electric Machines and Drives Conference, IEMDC 2015).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

TY - GEN

T1 - Identification of design rules for interior PM motors with different cooling systems

AU - Fatemi, Alireza

AU - Ionel, Dan M.

AU - Demerdash, Nabeel A.O.

PY - 2016/2/16

Y1 - 2016/2/16

N2 - The conventional scaling rules for the optimal design of electric machines are best suited for naturally cooled machines with stator winding current densities less than 4A/mm2. In this paper, through a comprehensive sensitivity analysis, first, it is demonstrated that the correlations between some geometric variables and the performance metrics of interior permanent magnet (IPM) motors vary significantly with respect to the stator winding current density. For this purpose, three current densities are selected so as to approximately account for naturally cooled, fan-cooled and liquid-cooled machines. Subsequently, a parameterized IPM motor is optimized at these current densities through a large-scale design optimization algorithm by evaluating a total of 20,000 design candidates. The 100 best designs from each group are then identified and extracted to investigate the scaling rules for the optimal design of such IPM motors with different cooling systems. The outcomes of the study are in correspondence with the conventional design principles for naturally cooled machines. Nevertheless, it is illustrated that these rules vary for fan-cooled and liquid-cooled machines owing to the increased ampere loading, and also heavy saturation of the magnetic core in such machines. A configuration of a 50 hp, 48-slot, 8-pole IPM motor with a single-layer v-type magnet is used as the benchmark of this study.

AB - The conventional scaling rules for the optimal design of electric machines are best suited for naturally cooled machines with stator winding current densities less than 4A/mm2. In this paper, through a comprehensive sensitivity analysis, first, it is demonstrated that the correlations between some geometric variables and the performance metrics of interior permanent magnet (IPM) motors vary significantly with respect to the stator winding current density. For this purpose, three current densities are selected so as to approximately account for naturally cooled, fan-cooled and liquid-cooled machines. Subsequently, a parameterized IPM motor is optimized at these current densities through a large-scale design optimization algorithm by evaluating a total of 20,000 design candidates. The 100 best designs from each group are then identified and extracted to investigate the scaling rules for the optimal design of such IPM motors with different cooling systems. The outcomes of the study are in correspondence with the conventional design principles for naturally cooled machines. Nevertheless, it is illustrated that these rules vary for fan-cooled and liquid-cooled machines owing to the increased ampere loading, and also heavy saturation of the magnetic core in such machines. A configuration of a 50 hp, 48-slot, 8-pole IPM motor with a single-layer v-type magnet is used as the benchmark of this study.

KW - Machine modelling and general design

KW - computer aided design

KW - design of experiments

KW - design optimization

KW - finite-element analysis

KW - permanent magnet machines

KW - sensitivity analysis

UR - http://www.scopus.com/inward/record.url?scp=84965161967&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84965161967&partnerID=8YFLogxK

U2 - 10.1109/IEMDC.2015.7409218

DO - 10.1109/IEMDC.2015.7409218

M3 - Conference contribution

AN - SCOPUS:84965161967

T3 - Proceedings - 2015 IEEE International Electric Machines and Drives Conference, IEMDC 2015

SP - 1228

EP - 1234

BT - Proceedings - 2015 IEEE International Electric Machines and Drives Conference, IEMDC 2015

T2 - IEEE International Electric Machines and Drives Conference, IEMDC 2015

Y2 - 11 May 2015 through 13 May 2015

ER -

Identification of design rules for interior PM motors with different cooling systems

Abstract

Publication series

Conference

Bibliographical note

Keywords

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this