Operation Enhancement of Permanent Magnet Excited Motors with Advanced Rotor Cooling System

Groschup, Benedikt; Komissarov, Maxim; Stevic, Svetomir; Hameyer, Kay

doi:10.1109/itec.2019.8790454

Cited by 11 publications

(15 citation statements)

References 13 publications

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“…Be aware that the given results of the S1-power are calculated based on the temperature limitations caused by the stator winding. Restrictions for the temperature of the permanent magnets in the rotor are likely to occure for high rotational speed [12].…”

Section: Influence Of Winding Design On the Operational Limits Of Thementioning

confidence: 99%

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Influence of the Preformed Coil Design on the Thermal Behavior of Electric Traction Machines

2021

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Preformed coils are used in electrical machines to improve the copper slot fill factor. A higher utilization of the machine can be realized. The improvement is a result of both, low copper losses due to the increased slot fill factor and an improved heat transition out of the slot. In this study, the influence of these two aspects on the operational improvement of the machine is studied. Detailed simulation models allow a separation of the two effects. A preform wound winding in comparison to a round wire winding is studied. Full machine prototypes as well as motorettes of the two designs are built up. Thermal finite element models of the stator slot are developed and parameterized with the help of motorette microsections. The resulting thermal lumped parameter model is enlarged to represent the entire electric machine. Electromagnetic finite element models for loss calculation and the thermal lumped parameter models are parameterized using test bench measurements. The developed models show very good agreement in comparison to the test bench evaluation. The study indicates that both, the improvements in the heat transition path and the advantages of the reduced losses in the slot contribute to the improved operational range in dependency of the studied operational point.

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Section: Influence Of Winding Design On the Operational Limits Of Thementioning

confidence: 99%

“…The results are used to develop detailed two-dimensional finite element analysis (FEA) models of the stator slot. Lumped parameter thermal network (LPTN) models such as introduced in [12] or [13] are developed for each machine. The FEA models are used to parameterize the thermal resistances of the LPTN models.…”

mentioning

confidence: 99%

Influence of the Preformed Coil Design on the Thermal Behavior of Electric Traction Machines

2021

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“…5,9,61,62 In Figure 4, various cooling strategies, such as using of the heat pipes, phase change materials, lamination cooling, air gap cooling, winding head cooling and shaft cooling are presented for the cooling enhancement. 30,43 Potting silicone gelatin (PSG) is effective to fill the gaps between the casing and winding ends of the permanent magnet synchronous motor. In the PSG method, the heat dissipation was observed to be effective and useful for the stable operation of PMSMs.…”

Section: Air-cooling Combinationmentioning

confidence: 99%

“…Direct rotor lamination cooling and direct winding ends cooling approaches are essential in the PMSM operating in wide rotational speed range. 30 The overall power loss in the windings is given by 21…”

Section: Losses In Detailmentioning

confidence: 99%

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Review of air-cooling strategies, combinations and thermal analysis (experimental and analytical) of a permanent magnet synchronous motor

Gundabattini

Mystkowski

2021

Proceedings of the Institution of Mechanical Engineers, Part C:

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This paper gives a brief review of advanced cooling methods and applications to the permanent magnet synchronous motors (PMSMs), as well as investigates the cooling systems design problem for PMSM systems. Heat sources and losses together with analytical and practical analyses are described. Next, the temperature distribution and its influence on the PMSM is investigated using simulation results. The main part of the paper includes a review of the proposed cooling methods that will release the requirement of heat transfer of the PMSM. The finite element methods (FEM) are applied using the AnSys CFD software to obtain high accuracy thermal model of the PMSM system. The new developed forced air-cooling methods are given in details, which enable to effectively redistribute the temperature and heat transfer increasing the efficiency of the PMSM machine. Examples of CFD simulation are outlined to illustrate the effectiveness and benefits of the strategies developed.

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Elektrische Maschinen

Hameyer,

Butterweck,

Driendl

et al. 2023

Elektromobilität

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Operation Enhancement of Permanent Magnet Excited Motors with Advanced Rotor Cooling System

Cited by 11 publications

References 13 publications

Influence of the Preformed Coil Design on the Thermal Behavior of Electric Traction Machines

Influence of the Preformed Coil Design on the Thermal Behavior of Electric Traction Machines

Review of air-cooling strategies, combinations and thermal analysis (experimental and analytical) of a permanent magnet synchronous motor

Elektrische Maschinen

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