Analysis and modeling of rotor slot enclosure effects in high speed induction motors

Boglietti, Aldo; Bojoi, Radu; Cavagnino, Andrea; Guglielmi, Paolo; Miotto, A.

doi:10.1109/ecce.2011.6063763

Cited by 6 publications

(8 citation statements)

References 17 publications

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“…From Fig. 7, it is can be observed that the waveforms of

B_{air}

at no‐load and rated‐load are not smoothly sinusoidal but are fluctuating attributed by the effects of harmonics and stator open slots and tooth [6, 13]. Based on the Fourier decomposition method, the harmonic content and fundamental waves of

B_{air}

at no‐load and rated‐load were obtained.…”

Section: Resultsmentioning

confidence: 99%

“…These metallic alloys can cause the electromagnetic field distribution and resulted in the driving characteristic of the CIMs to be different from that of the IMs [7, 8]. Different analyses of IMs using structural optimisation, fault diagnosis, mathematical model and multiphysics modelling have been presented in the literature [8–13]. Interestingly, the structural similarity between CIM and IM has enabled the CIM to be investigated based on analysis methods of the IMs.…”

Section: Introductionmentioning

confidence: 99%

“…In [6], Yanping et al analysed the end leakage reactance and reported the influence of special end structures on the end magnetic field and end leakage reactance of CIM. In [13], Boglietti et al analysed and discussed the influence of open and closed slots rotor of driving motors for a molecular pump concerning high‐speed IM, and proposed the method to describe the rotor wedge saturation effect in the machine equivalent circuit.…”

Section: Introductionmentioning

confidence: 99%

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Influence of asymmetrical stator axes on the electromagnetic field and driving characteristics of canned induction motor

Zhang

et al. 2019

IET Electric Power Applications

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Canned induction motors (CIMs) are particularly important for high vacuum application due to its low cost, simple design, and mechanically robust. Herein, this study reveals a mechanism of asymmetrical stator axes (ASAs) for CIMs and proposes six coefficients to describe ASA for CIMs under asymmetrical stator phase's windings. Using winding theorem, this study derived the electromagnetic field and driving characteristics in the healthy condition and ASA conditions for a 1.9 kW CIM, and analysed further using mathematical formulas and finite-element models. Both simulation and experimental results show good agreement, and significant variation was found in total harmonic distortion, the amplitude of air-gap flux density, and driving characteristics of CIMs. Further, investigation of back-electromotive force and stator current showed their efficacy as a diagnosis signature to detect the fault of ASA in CIMs. The obtained conclusions can serve as a valuable reference to design a high-performing CIMs control system.

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“…From Fig. 7, it is can be observed that the waveforms of

B_{air}

B_{air}

at no‐load and rated‐load were obtained.…”

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Influence of asymmetrical stator axes on the electromagnetic field and driving characteristics of canned induction motor

Zhang

et al. 2019

IET Electric Power Applications

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“…In this paper the authors investigate the two solutions from both magnetic and mechanical point of view. As reported in [16], open rotor slots allow a reduction of the rotor leakage inductance with the possibility to increase the CPSR. Despite this, closed rotor slots mean higher rotor leakage inductance with the benefit of better current filtering in presence of inverter supply.…”

Section: Rotor Laminationmentioning

confidence: 94%

“…The measured locked rotor resistances have been split in the stator and rotor contribution considering the skin effect coefficient. The stator and rotor reactance have been split according to the procedure reported in [16]. From Table IV, it is possible to notice that the values of the rotor reactance of the closed rotor slot machine is higher with respect to the open rotor slot one; this leads to a lower pullout torque and lower flux weakening capability of the closed rotor slot prototype.…”

Section: A Prototypes Parametersmentioning

confidence: 99%

Design Trade-off and Experimental Validation of multiphase starter generators for 48V mini-hybrid powertrain

Bojoi

Cavagnino

Cossale

et al. 2014

2014 IEEE International Electric Vehicle Conference (IEVC)

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In this paper the principal design aspects of a 48 V belt driven starter-generator for mini-hybrid automotive application are presented and discussed. Starting from the same specifications, two different 10 kW water-cooled induction machines have been designed and produced. Both the prototypes use the same stator design having a double three-phase stator winding made with solid bar conductors. The difference between the two machines is the rotor, which is designed with closed slots in the first prototype and open slots in the second one. The aim is to investigate the trade-off between electromagnetic performance and mechanical issues due to the 20000 rpm maximum rotating speed. The experimental verification of the electromagnetic performance and stator windings short time thermal transient behavior are reported too.

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Turn–turn short circuit fault management in permanent magnet machines

Arumugam

Hamiti

Gerada

2015

IET Electric Power Applications

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A note on versions:The version presented here may differ from the published version or from the version of record. If you wish to cite this item you are advised to consult the publisher's version. Please see the repository url above for details on accessing the published version and note that access may require a subscription.For more information, please contact eprints@nottingham.ac.uk  This paper is a postprint of a paper submitted to and accepted for publication in IET Electric Power Applications and is subject to

show abstract

Analysis and modeling of rotor slot enclosure effects in high speed induction motors

Cited by 6 publications

References 17 publications

Influence of asymmetrical stator axes on the electromagnetic field and driving characteristics of canned induction motor

Influence of asymmetrical stator axes on the electromagnetic field and driving characteristics of canned induction motor

Design Trade-off and Experimental Validation of multiphase starter generators for 48V mini-hybrid powertrain

Turn–turn short circuit fault management in permanent magnet machines

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