Design of water cooled electric motors using CFD and thermography techniques

Borges, Samuel Santos; Cezario, C.A.; Kunz, Tobias

doi:10.1109/icelmach.2008.4800078

Cited by 20 publications

(10 citation statements)

References 1 publication

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“…The difference between the inlet temperature and outlet temperature is about 10 K. This leads to a higher temperature in the windings near the outlet. Therefore, the inlet and outlet position were changed accordingly to [15]. Fig.…”

Section: B Thermal Analysismentioning

confidence: 99%

A flux barrier cooling for traction motors in hybrid drives

Nollau

Gerling

2015

2015 IEEE International Electric Machines &Amp; Drives Conference (IEMDC)

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This paper presents a detailed cooling approach for traction motors which are mounted in hybrid electric vehicle (HEV) or battery electric vehicle (BEV). There are specific guidelines for the design of a traction motor in hybrid drives, such as the small and restricted packing area and on the other side, the need for a high power -and torquedensity. For this vehicle powertrain application the Permanent magnet synchronous machines (PMSM) is a common choice, because of a high power density, a high efficiency and a small package. Nevertheless, this machine type has several drawbacks on the thermal design side, such as, it is susceptible to suffer insulations failures of coils and demagnetization of magnets under severe thermal condition. Therefore, a goal for every thermal optimization is to increase the cooling and generate proper heat dissipation to the cooling fluid. This paper presents a PMSM with flux barriers in the stator and a detailed view on the cooling system. The cooling system the flux barriers to increase the cooling effect and therefore, overcome the drawbacks of the PMSM. A simulation of the fluid flow is presented by a finite volume Computational Fluid Dynamic (CFD) model with ANSYS Fluent. This is a useful tool to analyze the cooling flow in a traction motor with regard to fluid velocity, flow quantity and pressure drop. In addition, a Prototype of the cooling system is tested on a test bench to verify the results.

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Section: B Thermal Analysismentioning

confidence: 99%

A flux barrier cooling for traction motors in hybrid drives

Nollau

Gerling

2015

2015 IEEE International Electric Machines &Amp; Drives Conference (IEMDC)

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“…Motor has been designed for speed n = 1200rpm and power P = 50kW see The following advantage and disadvantage of water cooling have to be mentioned, in comparison with air cooled motors [1].…”

Section: Water Cooled Motormentioning

confidence: 99%

“…This is the reason why the design of this type of cooling has become easier, better and more accurate [1].…”

Section: Introductionmentioning

confidence: 99%

Analyzing of two types water cooling electric motors using computational fluid dynamics

Pechánek

Bouzek

2012

2012 15th International Power Electronics and Motion Control Conference (EPE/PEMC)

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The focus of this work consists in analyzing water flow inside a water cooling electric motor frame. Aiming of work is in the comparison of load losses and the avoidance of hot spots in two types water cooled frames. Total losses of electrical machine were considered as thermal load. Electrical motor is new designed electrically excited synchronous machine for automotive industry. For the development of this work computational fluid dynamics (CFD) was used.

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“…The pressure losses are low in the cooling circuit (∼ 0.1 bar). The maximum pressure drop takes place in the inlet and outlet ducts for the common liquid jacket of the electrical machine housing [10]. The convection heat transfer coefficients increases notably with the rise of the inlet liquid velocity, as the regime of the liquid flow changes from laminar to turbulent.…”

Section: B Cooling System Introductionmentioning

confidence: 99%

“…PROPERTIES OF WATER&GLYCOL50% VOL (293K)The convection coefficient h l/duct in the frame ducts is assumed from the definition of the Nusselt number by Gnielinski correlation[10].…”

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confidence: 99%

Application of potting material for a 100 kW radial flux PMSM

Polikarpova

Lindh

Tapia

et al. 2014

2014 International Conference on Electrical Machines (ICEM)

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Thermal modeling of a 100 kW radial flux permanent magnet electrical machine is studied and verified by experiments. The traction machine has hybrid cooling. A simplified thermal model based on Computational Fluid Dynamics (CFD) was used to analyze the temperature distribution throughout the machine. The machine has a water jacket and adopts potting materials around the end-windings. The potting materials around the end windings operate as heat paths to the frame coolant. The design principle of the cooling system is presented in details. Experimental investigations are performed on a 100 kW radial flux permanent magnet electrical machine to validate the simulation results.Index Terms-electrical machines, liquid jacket, hybrid cooling system, thermal analysis I.M. Polikarpova is with the department of electrical engineering, ). P. M. Lindh is with the department of electrical engineering,

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Design of water cooled electric motors using CFD and thermography techniques

Cited by 20 publications

References 1 publication

A flux barrier cooling for traction motors in hybrid drives

A flux barrier cooling for traction motors in hybrid drives

Analyzing of two types water cooling electric motors using computational fluid dynamics

Application of potting material for a 100 kW radial flux PMSM

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