Combined electromagnetic and static structural simulation to reduce the weight of a permanent magnet machine rotor for HEV application

Groschup, Benedikt; Leonardi, F.

doi:10.1109/iemdc.2017.8002194

Cited by 4 publications

(2 citation statements)

References 6 publications

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“…The outer holding band (OHB) of a rotor is the ring structure bordered by the rotor outer contour and the most adjacent cavity, such as a magnetic pocket [24]. The OHB determines the dimensions of the equivalent ring, which is used for analytical calculation.…”

Section: Analytical Model To Calculate Mechanical Stresses In Magnet ...mentioning

confidence: 99%

Multi-domain analytical rotor model with buried permanent magnets in V-arrangement for high-speed applications

2024

Archives of Electrical Engineering

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Different buried permanent magnet arrangements in rotors are compared based on electrical machines found in literature regarding high-speed capability. An analytical approach is presented to analytically calculate mechanical stresses in the bilateral and central bridge of V arrangements in order to determine the achievable circumferential velocity of a rotor geometry. The mechanical model is coupled to an analytical model which can determine the flux density in the main air gap under consideration of flux leakage within the rotor. The multi-domain model enables the analytical design of high-speed rotors with buried permanent magnets in V-arrangement.

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Section: Analytical Model To Calculate Mechanical Stresses In Magnet ...mentioning

confidence: 99%

Multi-domain analytical rotor model with buried permanent magnets in V-arrangement for high-speed applications

2024

Archives of Electrical Engineering

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“…On each side of the element, normal stresses s and shear stresses t in the three dimensions of the coordinate system x, y, and z apply. For mechanical comparison of the stress load in electric motors' rotor lamination 2-D plane stress conditions to calculate the load of the rotor are applied (Groschup and Leonardi, 2017;Balluff et al, 2018). The same 2-D assumptions are used for the calculation of the magneto-elastic effect.…”

Section: Modelling Of the Magneto-elastic Effectmentioning

confidence: 99%

Mechanical stress distribution and the utilisation of the magneto-elastic effect in electrical machines

Karthaus

Groschup

Krüger

et al. 2019

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Purpose Due to the increasing amount of high power density high-speed electrical machines, a detailed understanding of the consequences for the machine’s operational behaviour and efficiency is necessary. Magnetic materials are prone to mechanical stress. Therefore, this paper aims to study the relation between the local mechanical stress distribution and magnetic properties such as magnetic flux density and iron losses. Design/methodology/approach In this paper, different approaches for equivalent mechanical stress criteria are analysed with focus on their applicability in electrical machines. Resulting machine characteristics such as magnetic flux density distribution or iron are compared. Findings The study shows a strong influence on the magnetic flux density distribution when considering the magneto-elastic effect for all analysed models. The influence on the iron loss is smaller due to a high amount of stress-independent eddy current loss component. Originality/value The understanding of the influence of mechanical stress on dimensions of electrical machines is important to obtain an accurate machine design. In this paper, the discussion on different equivalent stress approaches allows a new perspective for considering the magneto-elastic effect.

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Operational Enhancement of Electric Drives by Advanced Cooling Technologies

Groschup

Nell

Hameyer

2019

2019 IEEE Workshop on Electrical Machines Design, Control and Diagnosis (WEMDCD)

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Combined electromagnetic and static structural simulation to reduce the weight of a permanent magnet machine rotor for HEV application

Cited by 4 publications

References 6 publications

Multi-domain analytical rotor model with buried permanent magnets in V-arrangement for high-speed applications

Multi-domain analytical rotor model with buried permanent magnets in V-arrangement for high-speed applications

Mechanical stress distribution and the utilisation of the magneto-elastic effect in electrical machines

Operational Enhancement of Electric Drives by Advanced Cooling Technologies

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