Multiphysics Design and Optimization of High-Speed Permanent-Magnet Electrical Machines for Air Blower Applications

Huang, Ziyuan; Fang, Jiancheng

doi:10.1109/tie.2016.2518121

Cited by 124 publications

(32 citation statements)

References 18 publications

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“…At high-speed operation, the rotor components will suffer huge centrifugal force and certain amount of thermal stress. The PM material ideally has a high compressive strength (800MPa) and a medium flexural strength (120MPa), but it is rather brittle [11]. Hence, stress analysis is a key issue for the mechanical robustness of HSPMMs.…”

Section: Introductionmentioning

confidence: 99%

Fast calculation of carrier harmonic iron losses caused by pulse width modulation in interior permanent magnet synchronous motors

Zhu

Dong

et al. 2020

IET Electric Power Applications

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In this paper, the rotor stress is analysed for a highspeed permanent magnet (PM) machine (HSPMM) with segmented magnets retained by a carbon-fibre sleeve. The influence of rotor PM segmentation is firstly considered in the stress analysis. It is found that when the segmented magnets are under tensile stress, significant sleeve stress concentration will occur due to magnet edging effect. By contrast, the PMs will benefit from the segmentation with reduced tangential stress. This stress reduction effect is enhanced when the number of PM segments is larger. Furthermore, the influence of PM segmentation on the worst operating scenario is determined. In order to avoid stress concentration due to PM segmentation, the design guidelines are then given by investigating the influence of sleeve thickness and interference fit. A new design scheme of sleeve thickness is proposed based on the identified worst case scenarios. Finally, a 6-slot 4-pole high speed PM machine with segmented magnets retained by carbon-fibre sleeve is prototyped and tested at the speed of 90krpm. The rotor stability indirectly indicts the validity of the theoretical analysis and design scheme.

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Section: Introductionmentioning

confidence: 99%

Fast calculation of carrier harmonic iron losses caused by pulse width modulation in interior permanent magnet synchronous motors

Zhu

Dong

et al. 2020

IET Electric Power Applications

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“…This idea is not novel but the key is the efficiency, i.e., how to handle the huge computation burden required in the implementation as many options should be optimized and each one is usually a high-dimensional multi-physics problem [1], [9], [10].…”

Section: Introductionmentioning

confidence: 99%

Application-Oriented Robust Design Optimization Method for Batch Production of Permanent-Magnet Motors

Ma¹,

Lei²,

Zhu³

et al. 2018

IEEE Trans. Ind. Electron.

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Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works. 1 Abstract-From the perspective of industrial production, the design and optimization of electrical machines are application oriented, including maximizing production quality and minimizing production cost in terms of different manufacturing conditions. To achieve these goals, this work presents an efficient application-oriented robust design optimization method for permanent magnet (PM) motors. The method consists of two main contributions. The first one is the development of an overall optimization strategy including qualitative and quantitative analyses to provide possible options for an application. Multi-physics analysis, uncertainty analysis, production cost and optimization models need to be investigated. The second one proposes a multilevel optimization method for the high-dimensional robust design problem of each option. To illustrate the advantages of the proposed method, PM motors with soft magnetic composite cores are investigated for domestic applications. The design optimization is conducted in terms of three motor options and three batch production volumes for both conventional deterministic and robust approaches, and it consists of eighteen high-dimensional multi-physics optimization problems in total. Main optimization results are presented and discussed. Experimental and simulation results are presented to validate the effectiveness of the proposed models and methods.

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“…finite-element method (FEM) and analytical solution. Compared with the FEM [10][11][12][13][14][15], analytical solution has low computational complexity and explicit physical relationship between the stress and parameters of the SPMSM's rotor, which is beneficial to the optimal design of rotor structure.…”

Section: Introductionmentioning

confidence: 99%

Rotor strength analysis for high‐speed segmented surface‐mounted permanent magnet synchronous machines

Chen

Zhu

Zhang

et al. 2018

IET Electric Power Applications

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This study is concerned with the unified analytical solution of rotor strength for the segmented permanent magnet (PM) rotor retained by the carbon-fibre sleeve and non-magnetic alloy sleeve in high-speed surface-mounted permanent magnet synchronous machine. Considering the influence of different densities and coefficients of thermal expansion of PMs and pole fillers on rotor stress, the analytical solution for rotor strength was proposed based on displacement method and stress potential method in polar coordinate. The proposed analytical solution was validated by the finite-element method (FEM) and experiment, respectively, and the influences of rotational speed, retaining sleeve thickness and interference fit between the retaining sleeve and PMs on rotor strength were further investigated based on the analytical solution proposed. It is shown that the results calculated by the proposed analytical solution and the FEM are in good agreement with each other, and the analytical solution can accurately predict the stress distributions of the segmented PM rotor retained by the carbon-fibre sleeve and non-magnetic alloy sleeve. The difference in density and coefficient of thermal expansion between PM and pole filler, rotational speed and operating temperature have great effects on rotor strength.

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Multiphysics Design and Optimization of High-Speed Permanent-Magnet Electrical Machines for Air Blower Applications

Cited by 124 publications

References 18 publications

Fast calculation of carrier harmonic iron losses caused by pulse width modulation in interior permanent magnet synchronous motors

Fast calculation of carrier harmonic iron losses caused by pulse width modulation in interior permanent magnet synchronous motors

Application-Oriented Robust Design Optimization Method for Batch Production of Permanent-Magnet Motors

Rotor strength analysis for high‐speed segmented surface‐mounted permanent magnet synchronous machines

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