New high voltage 2-pole concentrated winding and corresponding rotor design for induction machines

Moros, Oleg; Dajaku, Gurakuq; Klusmann, Christian; Gerling, Dieter

doi:10.1109/iecon.2015.7392498

Cited by 9 publications

(5 citation statements)

References 3 publications

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“…However, the flux waveforms will be travelling in opposite directions. • The amplitude of the dominant MMF component under the 4pole mode equals 91% of the 8-pole mode for the same magnetising current magnitude, as in (11). • The flux distribution under the 4-pole mode is better than the 8pole mode.…”

Section: Effect Of Current Phase Shift Angle γ On the Air Gap Flux mentioning

confidence: 72%

“…The number of turns per phase will be the same for the two modes, while the winding factor, K w h , in both cases is calculated from (3) as 0.9848 and 0.6427 for the 8-pole and 4-pole modes, respectively. By neglecting the effect of saturation, the air gap flux density ratio can be approximated by the ratio between the torque producing MMF components in both cases given by (11) as shown in the following equation:…”

Section: Terminal Phase Voltage Magnitudementioning

confidence: 99%

“…This characteristic renders FSCWs as a proper choice in PM machines [7]. In recent literature, some references introduced innovative non-overlapped single tooth winding layouts for both linear and rotary IMs [8][9][10][11]. However, most of these winding layouts yield a relatively poor value for the synchronous winding factor, which increases the required copper volume for a given power rating.…”

Section: Introductionmentioning

confidence: 99%

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

Abdel‐Khalik

Massoud

Ahmed

2019

IET Electric Power Applications

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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.

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Section: Effect Of Current Phase Shift Angle γ On the Air Gap Flux mentioning

confidence: 72%

Section: Terminal Phase Voltage Magnitudementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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

Abdel‐Khalik

Massoud

Ahmed

2019

IET Electric Power Applications

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“…A distortionfree MMF enables high efficiencies both in IMs and PM machines, even with reduced winding factors [6], [12], [16].…”

Section: Winding Layout and Characteristicsmentioning

confidence: 99%

“…Each harmonic contained in MMF induces local voltage components in rotor bars, which lead to higher current displacement, higher rotor losses and undesired additional torque components. Therefore, a lot of new windings with a low harmonic content have been developed for IMs in the last few years [4][5][6][7], [16]. Novel single tooth concentrated windings for IMs often consist of several winding systems.…”

Section: Introductionmentioning

confidence: 99%

New flexible harmonic cost effective concentrated winding topology

Moros¹,

Gerling

2015

IECON 2015 - 41st Annual Conference of the IEEE Industrial Electronics Society

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This paper presents a new three phase single tooth concentrated winding topology. With the new locally asymmetric configuration, each individual harmonic can be addressed, so operations with any number of pairs of poles are possible. Furthermore, the new arrangement of single coils presented here allows variations of winding characteristics such as winding factor, spectrum of the magnetomotive force etc. Using a combination of this winding with a squirrel-cage rotor shape a robust and reasonable solution for implementation in safetycritical but cost effective automotive applications, especially in case of strictly limited axial machine dimension. In this paper three different winding layouts are compared on a very compact installation space, specified for a 30 kW starter-generator.

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