Design optimisation of field-intensified permanent magnet machine

Prins, Michiel H. A.; Kamper, Maarten J.

doi:10.1109/icelmach.2014.6960168

Cited by 8 publications

(5 citation statements)

References 13 publications

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“…Notwithstanding, this optimisation method has limited dimensions of design variables, and it is difficult to draw the response surface beyond three dimensions. Prins et al [20] optimised the FI-IPM by means of the gradient-based algorithm of the Visual Doc software together with Python scripts and the JMAG finite element simulation software. However, this method needs to frequently deploy the finite element software in the entire process, which means the high calculation burden.…”

Section: Literature Reviewmentioning

confidence: 99%

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Optimisation of reverse salient rotor for interior permanent magnet synchronous motor and experimental validation

Wei

et al. 2021

IET Electric Power Appl

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The prosperous development of electric vehicles has promoted the application of interior permanent magnet synchronous motors (IPMSMs). The flux-intensifying IPMSM has attracted more attention due to its high power-density and better flux-weakening performance. However, the optimisation efficiency and motor performance require further study in the actual optimisation design. To this end, this study is to optimise the electromagnetic field structure of motor rotors with the back propagation neural networks (BPNN) and multi-objective optimisation methods. Concretely, dimensional parameters of an initial motor are extracted as optimisation variables. Then, the BPNN are utilised to stimulate the motor performance obtained with finite element methods (FEM). With the trained BPNN, FEM tools are replaced in the subsequent optimisation process, which alleviates the computational burden. Besides, to address the problem of multi-objective optimisation with inequality constraints, the sequential unconstrained minimisation technique is incorporated into the non-dominated sorting genetic algorithm to obtain the Pareto frontier. Finally, the optimal design point is selected from the Pareto frontier. The simulation and experiment have been implemented to verify the superiority of the optimised rotor structure. Generally, this study has laid the foundation of the following motor optimisation with the higher executability and lower computational burden. K E Y W O R D S electric machines, electric vehicles, multi-objective optimization, neural networks, reverse salient rotorThis is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.

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Section: Literature Reviewmentioning

confidence: 99%

“…Prins et al. [20] optimised the FI‐IPM by means of the gradient‐based algorithm of the Visual Doc software together with Python scripts and the JMAG finite element simulation software. However, this method needs to frequently deploy the finite element software in the entire process, which means the high calculation burden.…”

Section: Introductionmentioning

confidence: 99%

Optimisation of reverse salient rotor for interior permanent magnet synchronous motor and experimental validation

Wei

et al. 2021

IET Electric Power Appl

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“…As a potential option, the flux intensifying (FI) rotor configuration has been of recent interest as an alternative to conventional PMSMs which usually adopt the FW feature. This implies that the conventional PMSMs (mostly interior PMSMs) can possibly be transformed to FI-PMSMs with various PM shapes (e.g., flat PM shape [18,19], curved PM shape [20], and spoke type PM [21]) and with an equal or slightly lower amount of PM needed for better anti-demagnetization ability.…”

Section: Introductionmentioning

confidence: 99%

Flux Intensifying Feature of Permanent Magnet Assisted Synchronous Reluctance Motor with High Torque Density

2022

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This paper investigates the flux intensifying (FI) feature of permanent magnet assisted synchronous reluctance motor (PMa-SynRM) in order to achieve high torque density with a small amount of permanent magnet (PM). This motor is thus denoted “FI-PMa-SynRM”. The performance of the developed FI-PMa-SynRM is compared with that of two other counterparts, i.e., an inset surface permanent magnet synchronous motor (SPMSM) and a synchronous reluctance motor (SynRM) to highlight the strengths of the FI-PMa-SynRM. In addition, an analysis on partial demagnetization and torque density of the developed FI-PMa-SynRM is conducted to demonstrate its advantages. The finite element method (FEM) is employed for the analysis in terms of flux linkage and inductances so that the effectiveness of the FI characteristics is validated. The analysis shows that a high torque density (24.79 Nm/L or even greater) can be achieved with a small amount of PM (0.72% motor volume). The ability of anti-demagnetization is also fulfilled. Furthermore, experimental results are provided to validate the analysis findings.

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“…Note that differing from Reference [23], where the evaluation was only conducted for a fixed rotor structure, this paper makes a complete analysis with a sufficient number of models in order to make proper suggestions for the improvement of SynRM performance. In Reference [25], the PM volume was optimized for predetermined field-intensified PM machines. Here, in the present study, the models investigated cover not only conventional PMa-SynRMs, but also the novel flux-intensifying PMa-SynRMs [26].…”

Section: Introductionmentioning

confidence: 99%

Performance Analysis of Synchronous Reluctance Motor with Limited Amount of Permanent Magnet

Ngo

Hsieh

2019

Energies

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This paper analyzes the performance of a synchronous reluctance motor (SynRM) equipped with a limited amount of a permanent magnet (PM). This is conventionally implemented by inserting PMs in rotor flux barriers, and this is often called the PM-assisted SynRM (PMa-SynRM). However, common PMa-SynRMs could be vulnerable to irreversible demagnetization. Therefore, motor performance and PM demagnetization should be simultaneously considered, and this would require the PM to be properly arranged. In this paper, various rotor configurations are carefully studied and compared in order to maximize the motor performance, avoid irreversible demagnetization and achieve higher PM utilization. Moreover, the field weakening capability is investigated and improved by regulating armature excitation. A particular rotor type with flux intensification was found to possess higher PM utilization, lower demagnetization possibility with fairly high performance. Thus, suitable rotor configurations are recommended for certain applications.

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Design optimisation of field-intensified permanent magnet machine

Cited by 8 publications

References 13 publications

Optimisation of reverse salient rotor for interior permanent magnet synchronous motor and experimental validation

Optimisation of reverse salient rotor for interior permanent magnet synchronous motor and experimental validation

Flux Intensifying Feature of Permanent Magnet Assisted Synchronous Reluctance Motor with High Torque Density

Performance Analysis of Synchronous Reluctance Motor with Limited Amount of Permanent Magnet

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