Integrated Motor and Two-speed Gearbox Powertrain System Development for Electric Vehicle

Liu, Puhui; Feng, Shun

doi:10.1109/ecce44975.2020.9236397

Cited by 5 publications

(1 citation statement)

References 7 publications

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“…The increase of the power density can be generally achieved by three approaches. The most significant results can be reached by the increase of the speed of the machine [5]. The machine can be then directly connected to the transmission with a fixed or two-speed [6] gear ratio to obtain the required output speed.…”

Section: Introductionmentioning

confidence: 99%

Challenges in Winding Design and Thermal Calculations: Physical Model of Permanent Magnet Synchronous Machine

2021

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Interest in multilayer windings is increasing with the application of the hairpin winding technology to the manufacturing of electrical machines. Therefore, the four-layer fractional slot concentrated winding is used for the initial design of the machine in this paper. The proposed physical model of the machine uses winding with a relatively high number of turns which is inappropriate to hairpin winding. Therefore the round-wire winding is created and the three-layer winding is derived and analyzed including the effect on the slot leakage inductance. The thermal analysis is then applied to the physical model of the machine to evaluate the slot-related thermal properties of the slot and the whole machine. The measurement is compared with the finite element analysis (FEA) and the equivalent slot thermal conductivity and heat transfer coefficients of the stator and rotor are obtained.

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Section: Introductionmentioning

confidence: 99%