Iron loss prediction using modified iem-formula during the field weakening for permanent magnet synchronous machines

Pedram Asef; Ramon Bargallo; Andrew Lapthorn

doi:10.3390/MACHINES5040030

Iron loss prediction using modified iem-formula during the field weakening for permanent magnet synchronous machines

Pedram Asef, Ramon Bargallo, Andrew Lapthorn

Department of Electronic & Electrical Engineering

Research output: Contribution to journal › Article › peer-review

7 Citations (SciVal)

Abstract

During field weakening operation time (FWOT), the total iron loss rises and affects the accuracy of loss prediction and efficiency, especially if a large range of FWOT exists due to a large voltage drop that was rooted from the resistance of the used material. Iron loss prediction is widely employed in investigations for a fast electrical machine analysis using 2D finite element analysis (FEA). This paper proposes harmonic loss analytically by a steady-state equivalent circuit with a novel procedure. Consideration of skin effects and iron saturation are utilized in order to examine the accuracy through the relative error distribution in the frequency domain of each model from 50 to 700 Hz. Additionally, this comparative study presents a torque-frequency-field density calculation over each single term of the modified institute of electrical machines formula (IEM-Formula). The proposed analytical calculation is performed using 2D FEA for a classic and modified IEM-Formula along with experimental verifications on a surface-mounted permanent magnet synchronous generator (PMSG) for a wind generation application.

Original language	English
Article number	30
Journal	Machines
Volume	5
Issue number	4
DOIs	https://doi.org/10.3390/MACHINES5040030
Publication status	Published - 5 Dec 2017

Bibliographical note

Funding Information:
Acknowledgments: This research under grant number of 590100-042615257-4 from the Polytechnic University oCfa Ctaaltoanloian-iBaa-rBcaerlcoenlaoTneacThecishd isis dclioscsleodseind 2in01 250.15.

Funding Information:
This research under grant number of 590100-042615257-4 from the Polytechnic University of Catalonia-BarcelonaTech is disclosed in 2015.

Publisher Copyright:
© 2017 by the authors. Licensee MDPI, Basel, Switzerland.

Keywords

Electrical machine
Equivalent circuit
Field weakening
Harmonic loss
IEM-formula
Iron loss
Synchronous generator
Wind energy

ASJC Scopus subject areas

Control and Systems Engineering
Computer Science (miscellaneous)
Mechanical Engineering
Control and Optimization
Industrial and Manufacturing Engineering
Electrical and Electronic Engineering

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10.3390/MACHINES5040030Licence: CC BY

Cite this

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title = "Iron loss prediction using modified iem-formula during the field weakening for permanent magnet synchronous machines",

abstract = "During field weakening operation time (FWOT), the total iron loss rises and affects the accuracy of loss prediction and efficiency, especially if a large range of FWOT exists due to a large voltage drop that was rooted from the resistance of the used material. Iron loss prediction is widely employed in investigations for a fast electrical machine analysis using 2D finite element analysis (FEA). This paper proposes harmonic loss analytically by a steady-state equivalent circuit with a novel procedure. Consideration of skin effects and iron saturation are utilized in order to examine the accuracy through the relative error distribution in the frequency domain of each model from 50 to 700 Hz. Additionally, this comparative study presents a torque-frequency-field density calculation over each single term of the modified institute of electrical machines formula (IEM-Formula). The proposed analytical calculation is performed using 2D FEA for a classic and modified IEM-Formula along with experimental verifications on a surface-mounted permanent magnet synchronous generator (PMSG) for a wind generation application.",

keywords = "Electrical machine, Equivalent circuit, Field weakening, Harmonic loss, IEM-formula, Iron loss, Synchronous generator, Wind energy",

author = "Pedram Asef and Ramon Bargallo and Andrew Lapthorn",

note = "Funding Information: Acknowledgments: This research under grant number of 590100-042615257-4 from the Polytechnic University oCfa Ctaaltoanloian-iBaa-rBcaerlcoenlaoTneacThecishd isis dclioscsleodseind 2in01 250.15. Funding Information: This research under grant number of 590100-042615257-4 from the Polytechnic University of Catalonia-BarcelonaTech is disclosed in 2015. Publisher Copyright: {\textcopyright} 2017 by the authors. Licensee MDPI, Basel, Switzerland.",

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AU - Asef, Pedram

AU - Bargallo, Ramon

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PY - 2017/12/5

Y1 - 2017/12/5

N2 - During field weakening operation time (FWOT), the total iron loss rises and affects the accuracy of loss prediction and efficiency, especially if a large range of FWOT exists due to a large voltage drop that was rooted from the resistance of the used material. Iron loss prediction is widely employed in investigations for a fast electrical machine analysis using 2D finite element analysis (FEA). This paper proposes harmonic loss analytically by a steady-state equivalent circuit with a novel procedure. Consideration of skin effects and iron saturation are utilized in order to examine the accuracy through the relative error distribution in the frequency domain of each model from 50 to 700 Hz. Additionally, this comparative study presents a torque-frequency-field density calculation over each single term of the modified institute of electrical machines formula (IEM-Formula). The proposed analytical calculation is performed using 2D FEA for a classic and modified IEM-Formula along with experimental verifications on a surface-mounted permanent magnet synchronous generator (PMSG) for a wind generation application.

AB - During field weakening operation time (FWOT), the total iron loss rises and affects the accuracy of loss prediction and efficiency, especially if a large range of FWOT exists due to a large voltage drop that was rooted from the resistance of the used material. Iron loss prediction is widely employed in investigations for a fast electrical machine analysis using 2D finite element analysis (FEA). This paper proposes harmonic loss analytically by a steady-state equivalent circuit with a novel procedure. Consideration of skin effects and iron saturation are utilized in order to examine the accuracy through the relative error distribution in the frequency domain of each model from 50 to 700 Hz. Additionally, this comparative study presents a torque-frequency-field density calculation over each single term of the modified institute of electrical machines formula (IEM-Formula). The proposed analytical calculation is performed using 2D FEA for a classic and modified IEM-Formula along with experimental verifications on a surface-mounted permanent magnet synchronous generator (PMSG) for a wind generation application.

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Iron loss prediction using modified iem-formula during the field weakening for permanent magnet synchronous machines

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

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