Thermal Analysis of Permanent Magnet Motor for the Electric Vehicle Application Considering Driving Duty Cycle

Fan, Jun; Zhang, Chengning; Wang, Zhifu; Dong, Yugang; Nino, Carlos E.; Tariq, Abdul Rehman; Strangas, Elias G.

doi:10.1109/tmag.2010.2042043

Cited by 126 publications

(40 citation statements)

References 5 publications

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“…It is crucial to measure temperature during tests of power losses or develops a thermal method to predict winding temperature e.g. a method based on the finite integration technique for the discretization, which gives an equivalent thermal model allowing the evaluation of transient temperature evolutions in the slot [11,12]. The temperature was monitored at ac current and an operation frequency of 50 Hz.…”

Section: Resultsmentioning

confidence: 99%

Analysis of the proximity and skin effects on copper loss in a stator core

Młot¹,

Korkosz²,

Grodzki³

et al. 2014

Archives of Electrical Engineering

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Accurate prediction of power loss distribution within an electrical device is highly desirable as it allows thermal behavior to be evaluated at the early design stage. Three-dimensional (3-D) and two-dimensional (2-D) finite element analysis (FEA) is applied to calculate dc and ac copper losses in the armature winding at high-frequency sinusoidal currents. The main goal of this paper is showing the end-winding effect on copper losses. Copper losses at high frequency are dominated by the skin and proximity effects. A time-varying current has a tendency to concentrate near the surfaces of conductors, and if the frequency is very high, the current is restricted to a very thin layer near the conductor surface. This phenomenon of nonuniform distribution of time-varying currents in conductors is known as the skin effect. The term proximity effect refers to the influence of alternating current in one conductor on the current distribution in another, nearby conductor. To evaluate the ac copper loss within the analyzed machine a simplified approach is adopted using one segment of stator core. To demonstrate an enhanced copper loss due to ac operation, the dc and ac resistances are calculated. The resistances ratio ac to dc is strongly dependent on frequency, temperature, shape of slot and size of slot opening.

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Section: Resultsmentioning

confidence: 99%

Analysis of the proximity and skin effects on copper loss in a stator core

Młot¹,

Korkosz²,

Grodzki³

et al. 2014

Archives of Electrical Engineering

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show abstract

“…Lumped parameter thermal models are a commonly used approach to analyse and predict electrical machine thermal behaviour [1][2][3][4][5][6][7][8], particularly when considering a transient duty [9], [10]. This is predominantly because of the fast computation time of lumped parameter circuits, which is necessary when evaluating performance over extended duty cycles.…”

Section: Introductionmentioning

confidence: 99%

Experimentally Calibrated Thermal Stator Modeling of AC Machines for Short-Duty Transient Operation

Godbehere

Wróbel

Drury

et al. 2017

IEEE Trans. on Ind. Applicat.

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“…HE PMSM is the perfect candidate for an electric vehicle application due to a high efficiency, compactness, fast dynamics and high torque to inertia ratio [1,2]. Especially the PM synchronous machine with fractional slot concentrated windings (FSCW) is widely used.…”

Section: Introductionmentioning

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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Thermal Analysis of Permanent Magnet Motor for the Electric Vehicle Application Considering Driving Duty Cycle

Cited by 126 publications

References 5 publications

Analysis of the proximity and skin effects on copper loss in a stator core

Analysis of the proximity and skin effects on copper loss in a stator core

Experimentally Calibrated Thermal Stator Modeling of AC Machines for Short-Duty Transient Operation

A flux barrier cooling for traction motors in hybrid drives

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