Thermal management of a high speed permanent magnet machine for an aeroengine

Rocca, A. La; Xu, Zeyuan; Arumugam, Puvan; Pickering, Simon; Eastwick, Carol; Gerada, Chris; Bozhko, Serhiy

doi:10.1109/icelmach.2016.7732908

Cited by 24 publications

(11 citation statements)

References 11 publications

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“…5 (a). According to (11), increasing the electrical loading improves the magnetic body force, and hence the thermomagnetic effect. As a result, the temperature reduction using ferrofluid to replace nanofluid is increased from 13 ℃ to 31 ℃ when the the current density increases from 18.4A/mm 2 to 22.1A/mm 2 .…”

Section: A Single Layer Windingsmentioning

confidence: 99%

“…This is mainly due to the poor thermal conductivity of air in the end space and therefore a high thermal resistance between the end-windings and machine housing where cooling system such as water jacket is located. To improve the cooling of end-windings, ventilation cooling [8,9] and forced oil cooling [10,11] have been investigated. For these cooling technologies, inlets and outlets are introduced on the endcaps or machine housing to allow air or liquid to flow through the machine.…”

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confidence: 99%

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Comparative Study of Ferrofluid Cooling for Permanent Magnet Machines With Different Winding Structures

Zhang,

Li,

Qin

2024

IEEE Access

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This paper investigates the influence of single-and double-layer winding structures on the thermal performances of fractional slot permanent magnet (PM) machines with ferrofluid cooling. Ferrofluid is an oil-based liquid with nano-sized ferromagnetic particles and has been injected into the end space of these machines. Owing to the magnetic body force produced by the end-winding leakage flux, the ferrofluid can circulate without the need for external pumps. This enables the establishment of an effective heat transfer path from the end-windings to the housing with water jacket. As a result, the ferrofluid improves the heat transfer rate and hence machine's overall thermal performance. Multiphysics models accounting for the coupling between electromagnetic (EM) field, fluid dynamics and heat transfer have been built for the investigations. In addition to the dc field simulation as that carried out in literature, these multi-physics models can also simulate the effect of ac field in the end space. The findings indicate that ferrofluid cooling significantly improves the EM and thermal performances for the fractional slot PM machines. In addition, due to different magnetic fields in the end space produced by the single-and double-layer windings, they exhibit different cooling efficiencies. A motorette has been built to validate the simulations. INDEX TERMS Ferrofluid cooling, magnetic body force, single/double layer winding, thermomagnetic effect.

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Section: A Single Layer Windingsmentioning

confidence: 99%

mentioning

confidence: 99%

Comparative Study of Ferrofluid Cooling for Permanent Magnet Machines With Different Winding Structures

Zhang,

Li,

Qin

2024

IEEE Access

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“…The effective tool to modelling and design the interior cooling of the PMSM rotor is the MATLAB/Simscape software. [34][35][36] It can be observed that the temperature of the magnet decreases significantly as the rotor cooling is provided with respect to the PMSM operating point. The highest drop of the PMSM magnets temperature of 40K occurs at 10000 rpm in comparison with not cooled PMSM, as we see both the temperatures 140 and 100 coincide at 10000 rpm elsewhere they are two different lines (Figure 3).…”

Section: Effects Of Temperature Risementioning

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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“…The temperature of the winding decreased by about 50% and 38% compared with cooling by air and water jacket only, respectively. Rocca et al [61] presented research on thermal management of high-speed permanent magnet motor with oil cooling. A banding sleeve was used to avoid overly big windage in the air gap.…”

Section: The Thermal Management Of Permanent Magnet Motormentioning

confidence: 99%

Thermal Management of Electrified Propulsion System for Low-Carbon Vehicles

Huang

Wang

et al. 2020

Automot. Innov.

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An overview of current thermal challenges in transport electrification is introduced in order to underpin the research developments and trends of recent thermal management techniques. Currently, explorations of intelligent thermal management and control strategies prevail among car manufacturers in the context of climate change and global warming impacts. Therefore, major cutting-edge systematic approaches in electrified powertrain are summarized in the first place. In particular, the important role of heating, ventilation and air-condition system (HVAC) is emphasised. The trends in developing efficient HVAC system for future electrified powertrain are analysed. Then electric machine efficiency is under spotlight which could be improved by introducing new thermal management techniques and strengthening the efforts of driveline integrations. The demanded integration efforts are expected to provide better value per volume, or more power output/torque per unit with smaller form factor. Driven by demands, major thermal issues of high-power density machines are raised including the comprehensive understanding of thermal path, and multiphysics challenges are addressed whilst embedding power electronic semiconductors, non-isotropic electromagnetic materials and thermal insulation materials. Last but not least, the present review has listed several typical cooling techniques such as liquid cooling jacket, impingement/spray cooling and immersion cooling that could be applied to facilitate the development of integrated electric machine, and a mechanic-electric-thermal holistic approach is suggested at early design phase. Conclusively, a brief summary of the emerging new cooling techniques is presented and the keys to a successful integration are concluded.

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Thermal management of a high speed permanent magnet machine for an aeroengine

Cited by 24 publications

References 11 publications

Comparative Study of Ferrofluid Cooling for Permanent Magnet Machines With Different Winding Structures

Comparative Study of Ferrofluid Cooling for Permanent Magnet Machines With Different Winding Structures

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

Thermal Management of Electrified Propulsion System for Low-Carbon Vehicles

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