Nine-phase six-terminal pole-amplitude modulated induction motor for electric vehicle applications

Research output: Contribution to journalArticle

Abstract

In electric drive applications that are based on high-speed induction motors (IMs) with an extended speed range, stator winding pole-changing is a possible technique to avoid oversizing the driving motor. The electronic pole changing employed in multiphase IMs has gained recent interest because it avoids physical winding reconfiguration. The effective number of poles of the air gap flux distribution can be electronically altered by simply changing the applied current sequence to a multiphase stator. The main problem associated with this technique is the significant increase in machine magnetising current with the increase in effective pole number when conventional multiphase distributed windings are employed. This study proposes a new fractional-slot concentrated winding layout with a special stator connection suitable for pole-amplitude modulated IMs that offers a 2:1 pole ratio while maintaining equal magnetising current for both winding pole pairs. Moreover, constant power operation can be achieved for a speed range of over 4 pu. The main concept is discussed and verified through simulations and experimentally. The machine mathematical model and the required vector space decomposition-based controller are also presented.

Original languageEnglish
Pages (from-to)1696-1707
Number of pages12
JournalIET Electric Power Applications
Volume13
Issue number11
DOIs
Publication statusPublished - 1 Nov 2019

Fingerprint

Electric vehicles
Induction motors
Poles
Stators
Electric drives
Vector spaces
Mathematical models
Fluxes
Decomposition
Controllers
Air

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

Cite this

Nine-phase six-terminal pole-amplitude modulated induction motor for electric vehicle applications. / Abdel-Khalik, Ayman S.; Massoud, Ahmed; Ahmed, Shehab.

In: IET Electric Power Applications, Vol. 13, No. 11, 01.11.2019, p. 1696-1707.

Research output: Contribution to journalArticle

@article{a8713afe7d6a43acbabeb8e9c0d6057c,
title = "Nine-phase six-terminal pole-amplitude modulated induction motor for electric vehicle applications",
abstract = "In electric drive applications that are based on high-speed induction motors (IMs) with an extended speed range, stator winding pole-changing is a possible technique to avoid oversizing the driving motor. The electronic pole changing employed in multiphase IMs has gained recent interest because it avoids physical winding reconfiguration. The effective number of poles of the air gap flux distribution can be electronically altered by simply changing the applied current sequence to a multiphase stator. The main problem associated with this technique is the significant increase in machine magnetising current with the increase in effective pole number when conventional multiphase distributed windings are employed. This study proposes a new fractional-slot concentrated winding layout with a special stator connection suitable for pole-amplitude modulated IMs that offers a 2:1 pole ratio while maintaining equal magnetising current for both winding pole pairs. Moreover, constant power operation can be achieved for a speed range of over 4 pu. The main concept is discussed and verified through simulations and experimentally. The machine mathematical model and the required vector space decomposition-based controller are also presented.",
author = "Abdel-Khalik, {Ayman S.} and Ahmed Massoud and Shehab Ahmed",
year = "2019",
month = "11",
day = "1",
doi = "10.1049/iet-epa.2018.5796",
language = "English",
volume = "13",
pages = "1696--1707",
journal = "IET Electric Power Applications",
issn = "1751-8660",
publisher = "Institution of Engineering and Technology",
number = "11",

}

TY - JOUR

T1 - Nine-phase six-terminal pole-amplitude modulated induction motor for electric vehicle applications

AU - Abdel-Khalik, Ayman S.

AU - Massoud, Ahmed

AU - Ahmed, Shehab

PY - 2019/11/1

Y1 - 2019/11/1

N2 - In electric drive applications that are based on high-speed induction motors (IMs) with an extended speed range, stator winding pole-changing is a possible technique to avoid oversizing the driving motor. The electronic pole changing employed in multiphase IMs has gained recent interest because it avoids physical winding reconfiguration. The effective number of poles of the air gap flux distribution can be electronically altered by simply changing the applied current sequence to a multiphase stator. The main problem associated with this technique is the significant increase in machine magnetising current with the increase in effective pole number when conventional multiphase distributed windings are employed. This study proposes a new fractional-slot concentrated winding layout with a special stator connection suitable for pole-amplitude modulated IMs that offers a 2:1 pole ratio while maintaining equal magnetising current for both winding pole pairs. Moreover, constant power operation can be achieved for a speed range of over 4 pu. The main concept is discussed and verified through simulations and experimentally. The machine mathematical model and the required vector space decomposition-based controller are also presented.

AB - In electric drive applications that are based on high-speed induction motors (IMs) with an extended speed range, stator winding pole-changing is a possible technique to avoid oversizing the driving motor. The electronic pole changing employed in multiphase IMs has gained recent interest because it avoids physical winding reconfiguration. The effective number of poles of the air gap flux distribution can be electronically altered by simply changing the applied current sequence to a multiphase stator. The main problem associated with this technique is the significant increase in machine magnetising current with the increase in effective pole number when conventional multiphase distributed windings are employed. This study proposes a new fractional-slot concentrated winding layout with a special stator connection suitable for pole-amplitude modulated IMs that offers a 2:1 pole ratio while maintaining equal magnetising current for both winding pole pairs. Moreover, constant power operation can be achieved for a speed range of over 4 pu. The main concept is discussed and verified through simulations and experimentally. The machine mathematical model and the required vector space decomposition-based controller are also presented.

UR - http://www.scopus.com/inward/record.url?scp=85075788402&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85075788402&partnerID=8YFLogxK

U2 - 10.1049/iet-epa.2018.5796

DO - 10.1049/iet-epa.2018.5796

M3 - Article

AN - SCOPUS:85075788402

VL - 13

SP - 1696

EP - 1707

JO - IET Electric Power Applications

JF - IET Electric Power Applications

SN - 1751-8660

IS - 11

ER -