Transient and steady‐state modelling of healthy and eccentric induction motors considering the main and third harmonic saturation factors

Ghoggal, Adel; Hamida, Amel Hadri

doi:10.1049/iet-epa.2018.5213

Cited by 9 publications

(3 citation statements)

References 44 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…WFT has been introduced as the main tool for inductance calculation in many papers 3,[18][19][20][22][23][24][26][27][28] by using Equation (1) as…”

Section: Enhanced Winding Function Theory (Ewft)mentioning

confidence: 99%

An enhanced analytical technique based on winding function theory for analysis of induction motors

Rezaee‐Alam

Rezaeealam

2021

Int Trans Electr Energ Syst

View full text Add to dashboard Cite

An enhanced analytical technique based on winding function theory (WFT) is developed in this paper, which can be used for accurate electromagnetic modeling of the induction motors. The enhanced winding function theory (EWFT) acts based on the calculation of inductance matrix of stator and rotor windings while accurately consider the air-gap length function and the magnetic saturation in iron parts, simultaneously. By using the conformal mappings (CMs), a modified air-gap length function is presented for a typical wound rotor induction motor (WRIM), which considers the slot effect on flux tubes in slotted air-gap. The finite element method (FEM) is used to confirm the accuracy of air-gap length function obtained through EWFT. Compared to conventional WFT, EWFT is also redefined to consider the magnetic saturation by using the equivalent virtual winding functions. In real, the magneto motive force (MMF) drops in iron parts of stator and rotor obtained through magnetic equivalent circuit (MEC) are replaced with a virtual winding. In this paper, by using EWFT, a 3-D lookup table is prepared in advance for elements of inductance matrix and their derivative, and it is then used to model the startup and steady-state conditions of WRIM under different load torques. To confirm the accuracy of EWFT, the some corresponding results of EWFT, FEM, and experiment setup are finally compared.

show abstract

“…WFT has been introduced as the main tool for inductance calculation in many papers 3,[18][19][20][22][23][24][26][27][28] by using Equation (1) as…”

Section: Enhanced Winding Function Theory (Ewft)mentioning

confidence: 99%

An enhanced analytical technique based on winding function theory for analysis of induction motors

Rezaee‐Alam

Rezaeealam

2021

Int Trans Electr Energ Syst

View full text Add to dashboard Cite

show abstract

“…However, the accuracy of WFT depends on the modeling accuracy of air-gap length and magnetic saturation. To this end, a virtual air-gap length function was presented in [20][21][22] to consider the magnetic saturation by WFT. The air-gap length function with stepped form was used in WFT while considering the slot depth of stator and rotor [23].…”

Section: Introductionmentioning

confidence: 99%

A New Hybrid Analytical Model Based on Winding Function Theory for Analysis of Unbalanced Two-Phase Induction Motors

2022

View full text Add to dashboard Cite

The purpose of this paper is to present a new hybrid analytical model (HAM) based on winding function theory (WFT) for electromagnetic analysis of performance of one typical unbalanced two-phase induction motor (UTPIM). Different indexes of electromagnetic modeling such as winding distribution, slotting effect, and magnetic saturation can be accurately considered by using the proposed HAM. For obtaining this new hybrid technique, WFT is reformulated for considering the magnetic saturation in addition to the influence of slotting and winding distribution. The conformal mappings (CMs) are used to accurately calculate the slotted air-gap length. The magnetic equivalent circuit (MEC) model is used to consider the magnetomotive force (MMF) drop in stator and rotor cores due to the excitation of one phase-winding.The obtained results of CMs and MEC are then utilized in reformulated WFT to calculate the inductances of respective phase-winding. Transient analysis is then done to calculate the indexes of performance such as air-gap magnetic field, phase currents, electromagnetic torque, and rotor speed by using the lookup table of inductances while considering different capacitors in auxiliary phase. In each step, the accuracy of analytical results is confirmed by comparing with corresponding results obtained from finite element method (FEM).

show abstract

“…An analytical approach to evaluate the performance of a three-phase induction motor (IM) under mixed eccentric conditions is presented in [9]. An evaluation of the negative influence of the eccentricity is given in [10]. A control scheme to reduce the effects of eccentricity in a three phase IM is proposed in [11].…”

Section: Introductionmentioning

confidence: 99%

Zero-Airgap Induction Motor Used to Drive a Transmission Oil Pump

et al. 2020

View full text Add to dashboard Cite

In this paper, we propose a novel study concerning the future use of a zero-airgap induction motor in applications related to transmission oil pumps. The name of the machine comes from the fact that the rotor touches the stator as it spins. The use of such an eccentric motor provides the possibility to remove the mechanical part that is typically found in the transmission oil pump, increasing its efficiency in this way. We focused on determining the optimum variant of a zero-airgap small power induction motor from the point of view of the electrical and mechanical performance. As such, 18 topologies of induction motors with various numbers of pole pairs and rotor bars were designed and numerically analyzed. For the best variant from each category, different eccentricities were considered to evaluate this effect over the performances of the motors. For the best candidate, various analyses were performed in order to demonstrate the validity of this solution for the proposed application. Elements regarding the thermal analysis of this structure are also presented here.

show abstract

Transient and steady‐state modelling of healthy and eccentric induction motors considering the main and third harmonic saturation factors

Cited by 9 publications

References 44 publications

An enhanced analytical technique based on winding function theory for analysis of induction motors

An enhanced analytical technique based on winding function theory for analysis of induction motors

A New Hybrid Analytical Model Based on Winding Function Theory for Analysis of Unbalanced Two-Phase Induction Motors

Zero-Airgap Induction Motor Used to Drive a Transmission Oil Pump

Contact Info

Product

Resources

About