Investigation of the Effects of Stator Slot Permeance on Induction Motor and Obtaining the Best Starting Torque Using Permeance Calculation

Yetgin, Asım Gökhan

doi:10.1109/cjece.2019.2914959

Cited by 10 publications

(4 citation statements)

References 14 publications

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“…Total leakage reactance is sum of slot, overhang, zigzag, and differential leakage reactance. 21,24 Theory states that the slot leakage reactance is inversely proportional to the number of slots per pole per phase. In this study, only slot leakage reactance is considered.…”

Section: Leakage Reactancementioning

confidence: 99%

“…But it broadly depends on factors like conductors per slot, number of pole (

p

), slot per pole per phase, and turns per phase (

T_{p h}

). Total leakage reactance is sum of slot, overhang, zig‐zag, and differential leakage reactance 21,24 . Theory states that the slot leakage reactance is inversely proportional to the number of slots per pole per phase.…”

Section: Influence Of Slot Per Pole Per Phasementioning

confidence: 99%

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Performance improvement of 36‐slot 6‐terminal induction motor drive using pole phase modulation with higher slot per pole per phase

Umredkar¹,

Keshri

Borghate

et al. 2023

Circuit Theory & Apps

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SummaryElectric vehicles (EVs) are getting imperative with passing time due to depleting fossil fuel resources and worsening pollution scenario. Induction motors (IMs) are a promising alternative to the conventional drive systems due to its inherent advantages. However, an efficient geared operation similar to internal combustion engine (ICE) vehicles is essential for wider adoption of the IM drive in EVs. Pole phase modulation technique helps achieve variable speed and torque combinations analogous to geared operation in IM. Performance of the IM drive can be improved by altering the stator winding configuration to achieve high slot per pole per phase, lesser leakage reactance, and lower DC link voltages. A single layered distributed winding is proposed in this work to achieve the above objectives. The proposed winding is first simulated using Maxwell‐2D and Finite Element Analysis (FEA) that are performed to understand the performance characteristics of IM drive with proposed winding scheme. The hardware implementation of the similar setup is done, and the tests are carried out to validate the simulation results. A 3HP, 36‐slot, 6‐terminal IM was fabricated for this purpose which was fed by the microcontroller based 6‐leg inverter for stator winding excitation. This helps to achieve low pole (6‐phase/2‐pole) and high pole (3‐phase/4‐pole) modes of operation to simulate a 2‐geared ICE performance. The study proved that high torque driving requirements can be fulfilled by a low pole operation while cruising requirements are met with a high pole operation. It also showed that the constant power region increases along with the efficiency contours plotted against the torque‐speed characteristics.

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Section: Leakage Reactancementioning

confidence: 99%

“…But it broadly depends on factors like conductors per slot, number of pole (

p

), slot per pole per phase, and turns per phase (

T_{p h}

Section: Influence Of Slot Per Pole Per Phasementioning

confidence: 99%

Performance improvement of 36‐slot 6‐terminal induction motor drive using pole phase modulation with higher slot per pole per phase

Umredkar¹,

Keshri

Borghate

et al. 2023

Circuit Theory & Apps

View full text Add to dashboard Cite

show abstract

“…Stermecki A. and Lee G. et al. discussed the method of improving starting torque from EM structure of the motor by carrying out detailed studies on the optimal design of stator winding, rotor slot shape, and the shape of rotor bar [15–19]. Badr M. A. et al.…”

Section: Introductionmentioning

confidence: 99%

“…[10][11][12][13][14]. Stermecki A. and Lee G. et al discussed the method of improving starting torque from EM structure of the motor by carrying out detailed studies on the optimal design of stator winding, rotor slot shape, and the shape of rotor bar [15][16][17][18][19]. Badr M. A. et al proposed to start the motor in a single phase mode with the help of a properly selected phase balancer capacitor [20]; Hu W. T. and his colleagues proposed to impose a certain direction stator voltage vector to make the flux reach stability faster [21], and then both of them realised starting process by switching to AC operation.…”

Section: Introductionmentioning

confidence: 99%

Optimal starting frequency of three‐phase induction motor

Chen

2021

IET Electric Power Appl

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In its applications, the starting performance of a 3-phase induction motor (IM) is very important. The starting torque of the motor should be as high as possible within the safe current range of the motor driver. In the study, the optimal frequency for motor starting is derived from the frequency characteristic of the IM. Through the analysis of the characteristics, the optimal frequency point can be found, which is able to generate the maximum torque per unit drive current. Both theoretical analysis and experiments show that the IM with the optimal starting frequency can generate the maximum torque for a given current. The traditional methods, such as soft-start, can reduce the starting current, but at the expense of lowering starting torque. This starting technology can solve the problem caused by traditional methods, improve the starting performance of the motor system significantly, and lower the requirement for the current redundancy of the motor driver effectively. K E Y W O R D Sinduction motor, optimal starting frequency, optimal starting torque per ampere, starting performance, starting torque, T-type equivalent circuitThis is an open access article under the terms of the Creative Commons Attribution-NonCommercial-NoDerivs License, which permits use and distribution in any medium, provided the original work is properly cited, the use is non-commercial and no modifications or adaptations are made.

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Influence of Magnetic Slot Wedge on Parameter and Loss Distribution of High Voltage Induction Motor

Qiu

Wang

Liu

et al. 2022

J. Electr. Eng. Technol.

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Investigation of the Effects of Stator Slot Permeance on Induction Motor and Obtaining the Best Starting Torque Using Permeance Calculation

Cited by 10 publications

References 14 publications

Performance improvement of 36‐slot 6‐terminal induction motor drive using pole phase modulation with higher slot per pole per phase

Performance improvement of 36‐slot 6‐terminal induction motor drive using pole phase modulation with higher slot per pole per phase

Optimal starting frequency of three‐phase induction motor

Influence of Magnetic Slot Wedge on Parameter and Loss Distribution of High Voltage Induction Motor

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