Fast and Systematic Design Optimization of Surface-Mounted PM Machines Using Advanced Analytical Models and Subharmonic Elimination Methods

Min, Seun Guy; Sarlioglu, Bulent

doi:10.1109/tmag.2018.2877403

Cited by 27 publications

(15 citation statements)

References 37 publications

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“…According to the above EMCM in the model B, the equivalent parameters of PM remanence B reB and thickness h pme can be obtained as (24), (25), respectively. The radial and circumferential components of the air-gap flux density can be given by (45), (46), as shown at the top of the next page [30]- [32], where M rn , M θn is the radial and tangential magnetization, respectively. when magnetization method of surface PM is parallel magnetization, then [16]…”

Section: B Equivalent Model Based On Only a Surface Mount Pm And Airmentioning

confidence: 99%

Analytical Model of Torque-Prediction for a Novel Hybrid Rotor Permanent Magnet Machines

Liu

Gao

et al. 2019

IEEE Access

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This paper presents an analytical method for predicting the electromagnetic performance in permanent magnet (PM) machine with the spoke-type rotor (STR) and a proposed hybrid rotor structure (HRS), respectively. The key of this method is to combine magnetic field analysis model (MFAM) with the magnetic equivalent circuit model. The influence of the irregular PM shape is considered by the segmentation calculation. To obtain the boundary condition in the MFAM, respectively, two equivalent methods on the rotor side are proposed. In the STR, the average flux density of the rotor core outer-surface is calculated to solve the Laplace's equation with considering for the rotor core outer-surface eccentric. In the HRS, based on the Thevenin's theorem, the equivalent parameters of PM remanence B reB and thickness h pme are obtained as a given condition, which can be utilized to compute the air-gap flux density by conventional classic magnetic field analysis model of surface-mounted PMs with air-gap region. Finally, the proposed analytical models are verified by the finite element analysis (FEA) with comparisons of the air-gap flux density, flux linkage, back-EMF and electromagnetic torque, respectively. Furthermore, the performance that the machine with the proposed hybrid structure rotor can improve the torque density as explained. INDEX TERMS Analytical method, hybrid PM rotor structure, rotor core outer-surface eccentric, magnetic equivalent circuit model (MECM).

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Section: B Equivalent Model Based On Only a Surface Mount Pm And Airmentioning

confidence: 99%

Analytical Model of Torque-Prediction for a Novel Hybrid Rotor Permanent Magnet Machines

Liu

Gao

et al. 2019

IEEE Access

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“…In the literature, the analytical modelling of LSPM motors is mainly conducted in either transient [17][18][19][20][21] or steady-state domains [22][23][24][25][26][27][28][29][30]. In [19,20], a dynamic analytical model of a 1phase LSPM motor with the starting capacitor is presented.…”

Section: Introductionmentioning

confidence: 99%

“…In regard to the steady-state model, various methods such as subdomain model [22,23], conformal mapping [24,25], magnetisation surface current (MSC) method [26,27] and magnetic circuit (MC) model [28][29][30] are available in the literature. Each method has its own advantages and disadvantages.…”

Section: Introductionmentioning

confidence: 99%

Analytical modelling and optimisation of line start LSPM synchronous motors

Ghahfarokhi

Aliabad

Boroujeni

et al. 2020

IET Electric Power Applications

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This study presents a comprehensive analytical analysis of line start permanent magnet (LSPM) synchronous motors in both steady-state and transient domains. The PM flux, the back-EMF and the winding inductances are first calculated in the steady-state based on the hybrid solution of magnetic circuit and the magnetic islands. Next, the motor voltage relations are mapped into an arbitrary d-q reference frame to dynamically assess the transient speed response as well as the individual motor torque components. Based on the presented analytical modelling, the parameters of the motor are optimised via genetic algorithm to maximise the back-EMF voltage and the overall steady-state performance. Given the parabolic relation between the back-EMF and the braking torque, the starting capability of the motor is defined as the optimisation constraint. Finally, the analytical results are verified by using a finite element analysis software package.

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“…Although the finite-element method (FEM) is able to consider all the geometrical details of the machine and the non-linear magnetic properties of materials, the computational time is relatively high. Therefore, for the optimal design stage of the machine, analytical methods such as the SD technique [2][3][4][5][6][7], conformal mapping (CM) [8,9], winding function [10,11], magnetic islands [12] and magnetic equivalent circuit (MEC) [1,12] are preferred than the numerical ones such as FEM.…”

Section: Introductionmentioning

confidence: 99%

Analytical model for slotted stator brushless surface inset permanent magnet machines using virtual current theory

Faradonbeh

Rahideh

Markadeh

2020

IET Electric Power Applications

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A two-dimensional analytical model is presented for predicting the air-gap magnetic flux density due to the permanent magnet (PM) and armature currents in brushless surface inset PM (BSIPM) machines. The virtual current theory is used to model the effects of the stator slots and rotor grooves. In this approach, the BSIPM machine is initially modelled as a machine without any stator slot and rotor groove, and the rotor groove and stator slot effects are modelled by a set of surface currents. By extracting the governing Laplace and Poisson equations and applying the boundary conditions, the magnetic flux density due to the PM and armature current is obtained in different parts of the machine. The accuracy of the proposed analytical model is confirmed by comparing its results with those of the finite-element method and experimental results. The proposed model is also compared with the subdomain analytical model in terms of computational speed and accuracy. Nomenclature A magnetic vector potential, Wb/m B r radial component of magnetic flux density, T B φ tangential component of magnetic flux density, T

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Fast and Systematic Design Optimization of Surface-Mounted PM Machines Using Advanced Analytical Models and Subharmonic Elimination Methods

Cited by 27 publications

References 37 publications

Analytical Model of Torque-Prediction for a Novel Hybrid Rotor Permanent Magnet Machines

Analytical Model of Torque-Prediction for a Novel Hybrid Rotor Permanent Magnet Machines

Analytical modelling and optimisation of line start LSPM synchronous motors

Analytical model for slotted stator brushless surface inset permanent magnet machines using virtual current theory

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