Improvement of Field-Weakening Performance of IPM Machines with Salient Pole Shoe Rotors

Nan Zhao; Nigel Schofield

doi:10.1109/ECCE.2019.8912926

Improvement of Field-Weakening Performance of IPM Machines with Salient Pole Shoe Rotors

Nan Zhao, Nigel Schofield

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

3 Citations (Scopus)

Abstract

Interior permanent magnet (IPM) machines, with high torque density and strong rotor robustness, have been widely employed as traction machines in electric vehicles (EVs). However, due to the machine armature reaction, IPM machines suffer from voltage distortion in the field-weakening region, which may influence the machine field-weakening capability and lead to a higher DC-link voltage requirement in the EV traction system. This paper investigates the terminal voltage distortion of IPM machines with three different magnet configurations in the rotor. The Nissan Leaf electric vehicle traction machine is studied as a benchmark machine. Experimental results of this machine are used to validate the analysis presented in this paper. The rotor surface shaping impacting the machine voltage is also studied. Therefore, a salient pole shoe machine is proposed and designed, which achieves an improved field-weakening performance compared to the conventional cylindrical rotor IPM machines.

Original language	English
Title of host publication	2019 IEEE Energy Conversion Congress and Exposition, ECCE 2019
Publisher	IEEE
Pages	3937-3943
Number of pages	7
ISBN (Electronic)	9781728103952, 9781728103945
ISBN (Print)	9781728103969
DOIs	https://doi.org/10.1109/ECCE.2019.8912926
Publication status	Published - 28 Nov 2019
Event	11th Annual IEEE Energy Conversion Congress and Exposition - Baltimore, United States Duration: 29 Sep 2019 → 3 Oct 2019 Conference number: 11

Publication series

Name	IEEE Energy Conversion Congress and Exposition
Publisher	IEEE
ISSN (Print)	2329-3721
ISSN (Electronic)	2329-3748

Conference

Conference	11th Annual IEEE Energy Conversion Congress and Exposition
Abbreviated title	ECCE 2019
Country/Territory	United States
City	Baltimore
Period	29/09/19 → 3/10/19

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10.1109/ECCE.2019.8912926Licence: Unspecified

Cite this

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title = "Improvement of Field-Weakening Performance of IPM Machines with Salient Pole Shoe Rotors",

abstract = "Interior permanent magnet (IPM) machines, with high torque density and strong rotor robustness, have been widely employed as traction machines in electric vehicles (EVs). However, due to the machine armature reaction, IPM machines suffer from voltage distortion in the field-weakening region, which may influence the machine field-weakening capability and lead to a higher DC-link voltage requirement in the EV traction system. This paper investigates the terminal voltage distortion of IPM machines with three different magnet configurations in the rotor. The Nissan Leaf electric vehicle traction machine is studied as a benchmark machine. Experimental results of this machine are used to validate the analysis presented in this paper. The rotor surface shaping impacting the machine voltage is also studied. Therefore, a salient pole shoe machine is proposed and designed, which achieves an improved field-weakening performance compared to the conventional cylindrical rotor IPM machines.",

keywords = "Electric vehicle, Field-weakening, Interior permanent magnet machine, Salient pole shoe rotor, Voltage distortion",

author = "Nan Zhao and Nigel Schofield",

year = "2019",

month = nov,

day = "28",

doi = "10.1109/ECCE.2019.8912926",

language = "English",

isbn = "9781728103969",

series = "IEEE Energy Conversion Congress and Exposition",

publisher = "IEEE",

pages = "3937--3943",

booktitle = "2019 IEEE Energy Conversion Congress and Exposition, ECCE 2019",

address = "United States",

note = "11th Annual IEEE Energy Conversion Congress and Exposition, ECCE 2019 ; Conference date: 29-09-2019 Through 03-10-2019",

}

Zhao, N & Schofield, N 2019, Improvement of Field-Weakening Performance of IPM Machines with Salient Pole Shoe Rotors. in 2019 IEEE Energy Conversion Congress and Exposition, ECCE 2019., 8912926, IEEE Energy Conversion Congress and Exposition, IEEE, pp. 3937-3943, 11th Annual IEEE Energy Conversion Congress and Exposition, Baltimore, Maryland, United States, 29/09/19. https://doi.org/10.1109/ECCE.2019.8912926

Improvement of Field-Weakening Performance of IPM Machines with Salient Pole Shoe Rotors. / Zhao, Nan; Schofield, Nigel.

2019 IEEE Energy Conversion Congress and Exposition, ECCE 2019. IEEE, 2019. p. 3937-3943 8912926 (IEEE Energy Conversion Congress and Exposition).

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

TY - GEN

T1 - Improvement of Field-Weakening Performance of IPM Machines with Salient Pole Shoe Rotors

AU - Zhao, Nan

AU - Schofield, Nigel

N1 - Conference code: 11

PY - 2019/11/28

Y1 - 2019/11/28

N2 - Interior permanent magnet (IPM) machines, with high torque density and strong rotor robustness, have been widely employed as traction machines in electric vehicles (EVs). However, due to the machine armature reaction, IPM machines suffer from voltage distortion in the field-weakening region, which may influence the machine field-weakening capability and lead to a higher DC-link voltage requirement in the EV traction system. This paper investigates the terminal voltage distortion of IPM machines with three different magnet configurations in the rotor. The Nissan Leaf electric vehicle traction machine is studied as a benchmark machine. Experimental results of this machine are used to validate the analysis presented in this paper. The rotor surface shaping impacting the machine voltage is also studied. Therefore, a salient pole shoe machine is proposed and designed, which achieves an improved field-weakening performance compared to the conventional cylindrical rotor IPM machines.

AB - Interior permanent magnet (IPM) machines, with high torque density and strong rotor robustness, have been widely employed as traction machines in electric vehicles (EVs). However, due to the machine armature reaction, IPM machines suffer from voltage distortion in the field-weakening region, which may influence the machine field-weakening capability and lead to a higher DC-link voltage requirement in the EV traction system. This paper investigates the terminal voltage distortion of IPM machines with three different magnet configurations in the rotor. The Nissan Leaf electric vehicle traction machine is studied as a benchmark machine. Experimental results of this machine are used to validate the analysis presented in this paper. The rotor surface shaping impacting the machine voltage is also studied. Therefore, a salient pole shoe machine is proposed and designed, which achieves an improved field-weakening performance compared to the conventional cylindrical rotor IPM machines.

KW - Electric vehicle

KW - Field-weakening

KW - Interior permanent magnet machine

KW - Salient pole shoe rotor

KW - Voltage distortion

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U2 - 10.1109/ECCE.2019.8912926

DO - 10.1109/ECCE.2019.8912926

M3 - Conference contribution

AN - SCOPUS:85076748308

SN - 9781728103969

T3 - IEEE Energy Conversion Congress and Exposition

SP - 3937

EP - 3943

BT - 2019 IEEE Energy Conversion Congress and Exposition, ECCE 2019

PB - IEEE

T2 - 11th Annual IEEE Energy Conversion Congress and Exposition

Y2 - 29 September 2019 through 3 October 2019

ER -

Improvement of Field-Weakening Performance of IPM Machines with Salient Pole Shoe Rotors

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