Water Cold Plates for Efficient Cooling: Verified on a Permanent-Magnet Machine With Concentrated Winding

Fan, Xinggang; Li, Dawei; Qu, Ronghai; Fang, Haiyang

doi:10.1109/tie.2019.2927181

Cited by 39 publications

(25 citation statements)

References 31 publications

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“…The winding as a heterogeneous body, consisting of copper conductors with insulation and impregnated varnish, is complex and time-consuming to model accurately [25]. Therefore, the equivalent thermal model of the winding is employed to accurately analyze the temperature of the winding, typically using the layer model [3] and the cubic model [26].…”

Section: B Equivalent Model Of Windingmentioning

confidence: 99%

“…At the very heart of electrified power trains is the electric machine. Many countries and enterprises have made ambitious commitments on the development of electric machines for automotive traction and aerospace propulsion with the focus on disruptively increasing their power density levels [1]- [3]. The Department of Energy (DoE) in the US has set a goal of achieving a power density of 33kW/L for 100kW electric traction drive systems by 2025 [4].…”

Section: Introductionmentioning

confidence: 99%

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Convective Heat Transfer Characteristics on End-Winding of Stator Immersed Oil-Cooled Electrical Machines for Aerospace Applications

Wang

Fan

et al. 2022

IEEE Trans. Transp. Electrific.

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The stator immersed oil cooling has emerged as a promising thermal management method for high power density electric machines applied in aerospace applications. However, due to the complex geometry of end-windings, the research on the convective heat transfer coefficient (CHTC) for the flooded stator is still at infancy. This paper investigates the convective heat transfer characteristics on end-windings of stator immersed oil-cooled electrical machines by computational fluid dynamics (CFD) methods and experiments implemented on a motorette. The variation law of the CHTCs of end-winding with flow rate is thoroughly investigated. Subsequently, new dimensionless correlations are defined using Nusselt numbers as a function of Reynolds numbers, which are further applied into a detailed lumped-parameter thermal network (LPTN) for rapid evaluation of temperature distribution. Finally, the obtained simulation results are verified by local temperature measurements. The experimental results also show that the proposed stator immersed oil-cooled structure can withstand a current density of up to 30A/mm 2 with a corresponding continuous power density of 6.8kW/kg.

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Section: B Equivalent Model Of Windingmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Convective Heat Transfer Characteristics on End-Winding of Stator Immersed Oil-Cooled Electrical Machines for Aerospace Applications

Wang

Fan

et al. 2022

IEEE Trans. Transp. Electrific.

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“…14 Rotor cooling using the helical water duct in the frame, where the radial fan is mounted on the shaft causes air stream to take away the heat as it passes through the axial ducts of the rotor core, is the effective solution. 7,[20][21][22] In this approach, the hot air is cooled as it passes through the helical water ducts in the frame. Inlet cooling water temperature is influential in controlling winding insulation temperature and thereby guarding the insulation life.…”

Section: Effects Of High Temperature In the Motormentioning

confidence: 99%

“…Thermal mapping of the electric motor, in particular winding insulation temperature, magnets' materials temperature, and the natural air convection cooling was investigated for the standstill operation as well as for the nominal operation of the electric motor. [20][21][22]60,66 Here, the 2-D FEM for heat transfer was used to predict the temperatures of winding insulation and magnet materials. Thermal analysis and cooling of the PMSM machine are very crucial for the performance of the machine since the temperature increasing would cause demagnetization of the permanent magnet materials.…”

Section: Thermal Mapping and Analysismentioning

confidence: 99%

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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“…In order to further improve the cooling capacity, Ref. [16,17] propose a cooling device that inserts water-cooled plates into the stator core. In Ref.…”

Section: Introductionmentioning

confidence: 99%

Electromagnetic design and thermal analysis of module combined permanent magnet motor with wrapped type for mine ball mill

Zhang

Guo

2021

IET Electric Power Appl

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With the large-scale development of the ball mill, the direct-drive gearless ball mill has emerged, eliminating the limitation of the transmission torque of large gear. However, it is difficult to process, transport, install and maintain the gearless ball mill because of its vast volume, and the coils cannot be decoupled freely. Therefore, this work proposes a module combined permanent magnet motor with wrapped type for mine ball mill (MBMWT-MCPMM). Based on the principle of removing coils, the stator is modularized. Each module can be regarded as a small rotary motor, which improves the reliability and fault tolerance of the motor. In this work, the structure and general design process of the MBMWT-MCPMM are described, and the electromagnetic performance is simulated and analysed. The influence of different factors on the cooling effect of the motor and the temperature rise of different modules during fault-tolerant operation are analysed. An 80 kW prototype is developed, and its experiments are carried out. The experimental results verify the validity of the related design and analysis.

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Water Cold Plates for Efficient Cooling: Verified on a Permanent-Magnet Machine With Concentrated Winding

Cited by 39 publications

References 31 publications

Convective Heat Transfer Characteristics on End-Winding of Stator Immersed Oil-Cooled Electrical Machines for Aerospace Applications

Convective Heat Transfer Characteristics on End-Winding of Stator Immersed Oil-Cooled Electrical Machines for Aerospace Applications

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

Electromagnetic design and thermal analysis of module combined permanent magnet motor with wrapped type for mine ball mill

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