A New Stray-Load Loss Formula for Small and Medium-Sized Induction Motors

Pillay, Pragasen; Al-Badri, Maher; Angers, Pierre; Desai, Chirag

doi:10.1109/tec.2016.2539959

Cited by 47 publications

(10 citation statements)

References 8 publications

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“…SL is the portion of the net P Eddy in a machine, generated by the space and time harmonics. These harmonics are generated from air-gap flux variation due to the slots, magnetic saturation and, leakage flux [8][9][10][11]. Net P Eddy produced by all the harmonics is:…”

Section: A Modeling Of Slmentioning

confidence: 99%

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Eddy Currents Based Stray Loss Model For Variable Load Conditions of Medium Power Induction Motors

Kumar¹,

Prabhash²,

Kanekawa³

et al. 2021

Preprint

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<div>This paper presents an eddy current based stray loss model for induction motors taking into account the impact of motor’s loading. The model uses the various motor inductances and, other nameplate data of an induction motor as primary variables. The Magnetic field distribution in a motor is prominently affected by the stator and rotor slot geometries. Distortions in the magnetic field have a direct impact on SL as well as on various inductances of the motor. The development and validation of the model is accomplished by testing total 26 numbers of induction motors of different geometries and materials at different loading conditions. In a further step, the applicability of the model in designing an IM is presented by re-designing a 75kW induction motor and comparing the experimental test results with the initial IM.</div>

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Section: A Modeling Of Slmentioning

confidence: 99%

“…Literature broadly discusses SL's evaluation by four approaches: viz. testings [7], numerical [8] , equivalent circuit representation [9], and empirical formulation [10], [11] . Among these methods, testing is not applicable in design phase.…”

Section: Introductionmentioning

confidence: 99%

Eddy Currents Based Stray Loss Model For Variable Load Conditions of Medium Power Induction Motors

Kumar¹,

Prabhash²,

Kanekawa³

et al. 2021

Preprint

View full text Add to dashboard Cite

show abstract

“…When addressing the SL, literature is broadly restricted to the space harmonics and sinusoidal excitation [7], [11], [12]. [7] and [11], present theoretical expressions to estimate the SL in a grid-connected IM.…”

Section: Introductionmentioning

confidence: 99%

“…In the attempt to redress these evaluation intricacies, [12], [16], [17] present different SL empirical models. The models presented in these works are developed with a logical hypothesis supported by the statistical analysis on a large set of measured SL data.…”

Section: Introductionmentioning

confidence: 99%

Formulation of Stray Loss in Medium Power Inverter-fed Induction Motors

Kumar¹,

Sah²,

Kumar³

2021

Preprint

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<div>The work presents a fast and accurate empirical stray loss model for inverter fed three-phase induction motors (IMs). The model is intended to quantify the SL both at the design stage and, normal operation of the IM. The development of the model considers the variations of frequency, switching frequency and motor’s loading. Test data of 128 operating points of two training IMs are used to develop the model. The accuracy and prediction capability of the proposed model is presented with the measured SL values for 128 operating points of another set of two IMs of the same specifications and different geometries.</div>

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“…And these iron loss models are root from the classical iron loss method, which also can be applied to many different types of motor. And there are also a lot of works which related to the loss properties and loss minimisation of electrical motor [19][20][21][22][23]. Nevertheless, the theoretical study of the effect of voltage unbalance and distortion on the loss properties of induction motor was relatively insufficient.…”

Section: Introductionmentioning

confidence: 99%

Effect of voltage unbalance and distortion on the loss characteristics of three‐phase cage induction motor

Zhang

Tie-jun

2017

IET Electric Power Applications

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Voltage unbalance and distortion become one of the most common power quality problems in industrial utilities, which cause significant increase of the electromagnetic losses in induction motors. For energy saving of the induction motor system, there is a need for a detailed research of the loss characteristics of induction motor under unbalanced and distorted supply voltage. For accurate and fast prediction of the induction motor losses, this study proposes a method to identify rotor harmonics using the data from one supply cycle. The slip-frequency rotor harmonics are determined by using the space-time symmetrical characteristics of the induction motor. And based on a numerical method, the higher order harmonics of rotor flux density or current density are determined from data within one supply cycle. The electromagnetic losses are then calculated from those harmonics. With this method, the electromagnetic losses of a 5.5 kW induction motor under unbalanced and distorted supply voltage are calculated and analyzed. The proposed method and the analysis results are validated by comparing the predicted and measured motor losses of the 5.5 kW induction motor under different supply conditions.

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A New Stray-Load Loss Formula for Small and Medium-Sized Induction Motors

Cited by 47 publications

References 8 publications

Eddy Currents Based Stray Loss Model For Variable Load Conditions of Medium Power Induction Motors

Eddy Currents Based Stray Loss Model For Variable Load Conditions of Medium Power Induction Motors

Formulation of Stray Loss in Medium Power Inverter-fed Induction Motors

Effect of voltage unbalance and distortion on the loss characteristics of three‐phase cage induction motor

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