Novel formulation for optimized winding and core design for improved induction machine performance

Banchhor, Durgesh Kumar; Dhabale, Ashwin

doi:10.1007/s00202-021-01330-5

Cited by 2 publications

(3 citation statements)

References 26 publications

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“…The winding function is realized by plotting the number of conductors against the angular position of the slots (δ), and it shows the flux density distribution of a winding around the air gap periphery of a machine. 19,20 A general winding function, FðδÞ, of a distributed winding (DW) in Figure 4 can be expressed as ( 1)…”

Section: Winding Functionmentioning

confidence: 99%

“…The winding function is realized by plotting the number of conductors against the angular position of the slots (

δ

), and it shows the flux density distribution of a winding around the air gap periphery of a machine 19,20 . A general winding function,

F false(δ false)

, of a distributed winding (DW) in Figure 4 can be expressed as (1)

F false(δ false) = ({, \begin{matrix} center center \\ array 0 & array 0 \leq δ \leq δ_{1} \\ array N_{1} & array δ_{1} \leq δ \leq δ_{2} \\ array N_{1} + N_{2} & array δ_{2} \leq δ \leq δ_{3} \\ array & array . \\ array & array . \\ array N_{1} + N_{2} . . . + N_{j} & array δ_{j} \leq δ \leq π / 2 \end{matrix})

…”

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: Winding Functionmentioning

confidence: 99%

“…The winding function is realized by plotting the number of conductors against the angular position of the slots (

δ

), and it shows the flux density distribution of a winding around the air gap periphery of a machine 19,20 . A general winding function,

F false(δ false)

, of a distributed winding (DW) in Figure 4 can be expressed as (1)

F false(δ false) = ({, \begin{matrix} center center \\ array 0 & array 0 \leq δ \leq δ_{1} \\ array N_{1} & array δ_{1} \leq δ \leq δ_{2} \\ array N_{1} + N_{2} & array δ_{2} \leq δ \leq δ_{3} \\ array & array . \\ array & array . \\ array N_{1} + N_{2} . . . + N_{j} & array δ_{j} \leq δ \leq π / 2 \end{matrix})

…”

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

“…More than 90% of the electric motors in domestic and industrial applications are line-start squirrelcage induction motors (SCIMs) [2][3][4]. The applications of the line-start motors are pumps [5], fans [6], cranes [7], elevators [8], blowers [9], etc. Line-start permanent-magnet synchronous motors (LSPMSMs) have been proposed as a substitute for the SCIMs.…”

Section: Introductionmentioning

confidence: 99%

Bond graph model of line-start permanent-magnet synchronous motors

et al. 2022

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The bond-graph (BG) enables to model multi-physics systems in the energy domains. This paper shows that BG models are an alternative, more intuitive and simpler to interpret, graphical tool as compared to existing dynamic models for performance prediction of the line-start permanent-magnet synchronous motors (LSPMSMs). It includes electrical, magnetic, and mechanical energy domains where the stator windings, rotor bars, and permanent magnets are the main components of the model. The dynamical equations of the proposed BG are extracted and solved using the MATLAB ordinary differential equation solver for a sample LSPMSM. The dynamics of the studied LSPMSM is investigated under two operating conditions (1) a healthy motor and (2) a motor with broken rotor bars. The simulation results are compared with the finite-element analysis (FEA) as the most accurate method to simulate the electric motor behaviour. It is shown that the proposed BG model accurately predicts the performance parameters of the motor such as current, torque, and speed under various operating conditions. In addition to the modelling validation, the transient behavior of the LSPMSM are discussed to describe the possible reasons for its behaviour during transient and steady-state operating conditions.

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Novel formulation for optimized winding and core design for improved induction machine performance

Cited by 2 publications

References 26 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

Bond graph model of line-start permanent-magnet synchronous motors

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