A High-Speed Permanent-Magnet Machine for Fault-Tolerant Drivetrains

Papini, Luca; Raminosoa, Tsarafidy; Gerada, David; Gerada, Chris

doi:10.1109/tie.2013.2282604

Cited by 64 publications

(37 citation statements)

References 18 publications

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“…The induced eddy current density J in the rotor can be calculated from the waveform of the vector potential by performing a numerical time differentiation [21]:…”

Section: B Rotor Eddy Current Lossmentioning

confidence: 99%

Power Loss and Thermal Analysis of a MW High-Speed Permanent Magnet Synchronous Machine

Zhang

McLoone

Cao

et al. 2017

IEEE Trans. Energy Convers.

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109

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Abstract--High speed permanent magnet synchronous machines (PMSMs) have attracted much attention due to their high power density, high efficiency, and compact size for directdrive applications. However, the consequent power loss density is high, and hence heat dissipation is a major technical challenge. This is particularly the case for high-speed operation. In this paper, a MW level high speed PMSM is designed and its electromagnetic and mechanical power losses comprehensively investigated using finite element analysis. The transient machine demagnetization performance is studied, and a composite rotor structure is proposed to improve machine anti-demagnetization capability. The temperature distribution of the proposed high speed PMSM is also analyzed using a fluid-thermal coupling method with calculated power loss. Experiments conducted on a prototype of the high speed PMSM demonstrate the effectiveness of the numerical models developed and validate the results obtained.Index Terms--Demagnetization, finite element method, high speed PM machine, magnetic field, power loss, thermal analysis.

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“…The induced eddy current density J in the rotor can be calculated from the waveform of the vector potential by performing a numerical time differentiation [21]:…”

Section: B Rotor Eddy Current Lossmentioning

confidence: 99%

Power Loss and Thermal Analysis of a MW High-Speed Permanent Magnet Synchronous Machine

Zhang

McLoone

Cao

et al. 2017

IEEE Trans. Energy Convers.

Self Cite

109

View full text Add to dashboard Cite

show abstract

“…The well-known torque equation under sinusoidal approximation for PM machines [1] is reported in (7) referred to the generic ‫ݏ‬ ‫݄ݐ‬ sector.…”

Section: The Machine Characterizationmentioning

confidence: 99%

“…Decoupled models have been considered in [6] to design rotor position control strategies levering on the d-q axis modelling of PMSM machines [1]. The torque demand and the force vector are generated by controlling the ݊ ௦ q-axis and d-axis components of the current in the synchronous reference frame, respectively.…”

Section: B Decoupled Torque and Force Control Techniquementioning

confidence: 99%

“…ermanent magnet synchronous machines (PMSM) are widely adopted in many high performance industrial applications and more recently have seen an increased uptake driven by transportation including automotive, railway, marine and aerospace [1]. Application requirements vary from case to case, however there is a general trend towards increasing the power density and the efficiency of the electrical machine aiming a reduction of the system fuel consumption, emission and range.…”

Section: Introductionmentioning

confidence: 99%

“…As a matter of fact, magnetic levitation enables the potential of full rotordynamic control on the rotating component which could allow the achievement of very high rotational speeds [3] and provide damping effects while crossing critical frequencies. Bearingless technology applied to electrical machines has been used widely in high performance industrial environments for high speed [1] and oil-free applications [2]. Rotor levitating technology is most commonly achieved by applying Active Magnetic Bearings (AMB) as well as Passive Magnetic Bearings (PMB) whilst the electrical machine is typically designed to optimize torque production and minimize torque ripple and vibration [4].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Radial force control of multi-sector permanent magnet machines

Valente

Papini

Formentini

et al. 2016

2016 XXII International Conference on Electrical Machines (ICEM)

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Analytical Calculation for Multilayer Rotor Eddy Current Losses of High‐Speed Permanent Magnet Machines

Wang

et al. 2022

IEEJ Transactions Elec Engng

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This paper deduces an exact model of analytical calculation for the multilayer rotor eddy current losses of high-speed permanent magnet machines based on the subdomain method. The analytical calculation model solution domain is divided into six parts of subdomains, including permanent magnet, shielding layer, metal retaining sleeve, air gap, slot openings, and windings. The Laplace equation of the air subdomain and the diffusion equation of the eddy current subdomain and the windings subdomain are established with the vector magnetic potential as the independent variable. The eddy current losses of the permanent magnet, shielding layer, and retaining sleeve of the multilayer rotor are calculated considering the slots effect and eddy current reaction. This analytical model is used to study the interfering factors of the multilayer rotor eddy current losses including the shielding layer thickness, carrier ratio, and modulation ratio. Finally, the correctness and regularity of the analytical calculation model are proved by finite element analysis and machine experiment analysis.

show abstract

A High-Speed Permanent-Magnet Machine for Fault-Tolerant Drivetrains

Cited by 64 publications

References 18 publications

Power Loss and Thermal Analysis of a MW High-Speed Permanent Magnet Synchronous Machine

Power Loss and Thermal Analysis of a MW High-Speed Permanent Magnet Synchronous Machine

Radial force control of multi-sector permanent magnet machines

Analytical Calculation for Multilayer Rotor Eddy Current Losses of High‐Speed Permanent Magnet Machines

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