A new optimal design of surface mounted permanent magnet synchronous motors with integral slot per pole

Rezaeealam, Behrooz; Rezaee‐Alam, Farhad

doi:10.1108/compel-01-2017-0009

Cited by 6 publications

(10 citation statements)

References 16 publications

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“…The finite difference method (FDM) [31] is then used to solve the set of equations after creating a lookup table for each element of 𝐿(𝜃 𝑟 ) and its derivative. For example, Figure 19 shows the lookup of L A-A as a 3-D plot in terms of the excitation I A and the rotor position (𝜃 𝑟 ).…”

Section: Transient Modelingmentioning

confidence: 99%

“…Eqs. (30)(31) are then used to calculate the equivalent virtual currents in stator and rotor slots. Figure 26 shows the distribution of equivalent virtual currents in stator and rotor slots under the steady state no-load condition.…”

Section: Calculation Of Air-gap Magnetic Fieldmentioning

confidence: 99%

“…The methods of Hague and CM [31] are then used to calculate the radial component of slotless air-gap magnetic field under the steady-state no-load condition, as shown in Figure 27.…”

Section: Figure 26mentioning

confidence: 99%

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

2022

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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).

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Section: Transient Modelingmentioning

confidence: 99%

Section: Calculation Of Air-gap Magnetic Fieldmentioning

confidence: 99%

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

2022

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“…When the elements of L(θ r , I) and dL dθ r θ r ,I ð Þ are needed later, the main program can look them up with saving the CPU resources. Having these lookup tables, in each time-step of simulation, the matrix of phase currents is calculated for next time-step of simulation using finitedifference method 16 as…”

Section: Simulation Of Running Conditionmentioning

confidence: 99%

“…However, CM method cannot consider the magnetic saturation. 16 FRM also applies the law of superposition to the basis functions obtained through FEM. Therefore, FRM is not a self-contained method, and it also cannot consider the magnetic saturation.…”

Section: Introductionmentioning

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

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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.

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Modified magnetic equivalent circuit model for magnetic field analysis of one cage‐rotor induction motor used in electric submersible pumps

Rezaee‐Alam

Marashi

Roozbehani

2023

IET Electric Power Appl

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Here, a modified magnetic equivalent circuit model which can accurately consider the air‐gap region is presented. The main defect of magnetic equivalent circuit model is in the modelling of air‐gap region. To solve this problem, a new approach based on conformal mappings is presented to accurately calculate the air‐gap permeances between the elements of stator and rotor while considering the real paths of flux tubes in air gap. The distributions of equivalent virtual currents on the both sides of air gap are obtained through modified magnetic equivalent circuit model, which represent the effects of slots, magneto motive force drops in iron parts, and magneto motive force sources. The conformal mapping method is then used to calculate the components of air‐gap magnetic field for every operating point under starting conditions and different loads. One typical cage‐rotor induction motor, which is used in electric submersible pumps, is considered to investigate the accuracy of modified magnetic equivalent circuit model. Some of the analytical results obtained through modified magnetic equivalent circuit model are verified by comparing with the corresponding results obtained from finite element method and experiment set up.

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A new optimal design of surface mounted permanent magnet synchronous motors with integral slot per pole

Cited by 6 publications

References 16 publications

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

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

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

Modified magnetic equivalent circuit model for magnetic field analysis of one cage‐rotor induction motor used in electric submersible pumps

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