Traction motor cooling systems: A literature review and comparative study

PO Gronwald, TA Kern - IEEE transactions on transportation …, 2021 - ieeexplore.ieee.org
More efficient cooling systems are an enabler for the increase in power density in an electric
traction motor. Contemplating to existing reviews, this article presents a comprehensive …

[HTML][HTML] Methods for the Viscous Loss Calculation and Thermal Analysis of Oil-Filled Motors: A Review

J Zhang, Y Shao, Y Long, X He, K Wu, L Cai, J Wu… - Energies, 2024 - mdpi.com
Oil-filled motors (OFMs) are widely used in deep-sea exploration and oil well extraction.
During motor operation, the rotor stirs the oil in the air gap, causing viscous loss. Viscous …

[HTML][HTML] Influence of rotor slot profile on the windage loss in a Switched Reluctance Motor for an electric autorickshaw

A Seshadri, LN Chokkalingam - Engineering Science and Technology, an …, 2023 - Elsevier
Abstract A Switched Reluctance Motor is designed for an electric auto rickshaw operating at
25 kmph. Different stator-rotor teeth combinations are worked out and the suitable …

A New Windage Loss Model for S-CO2 Turbomachinery Design

D Kim, Y Jeong, IW Son, JI Lee - Applied Sciences, 2023 - mdpi.com
A supercritical CO2 (S-CO2) Brayton cycle is a compact and simple power conversion
system with competitive efficiency. However, the strong real gas effects of S-CO2 pose …

A loss separation method of a high-speed magnetic levitated PMSM based on drag system experiment without torque meter

X Liu, G Liu, B Han - IEEE Transactions on Industrial …, 2018 - ieeexplore.ieee.org
Varieties of loss should be optimized to be as little as possible for the stability of the
permanent magnet in a high-speed magnetic levitated permanent magnet synchronous …

Model improvement for shaft-type windage loss with CO2

L Hu, Q Deng, J Li, Z Feng - The Journal of Supercritical Fluids, 2022 - Elsevier
To improve the prediction accuracy of skin friction coefficient C f related shaft-type windage
loss in generators of turbine-alternator-compressor (TAC) units, an original model is …

Effects of Surface Roughness on Windage Loss and Flow Characteristics in Shaft-Type Gap with Critical CO2

L Hu, Q Deng, Z Liu, J Li, Z Feng - Applied Sciences, 2022 - mdpi.com
To investigate the effects of surface roughness on windage loss and flow characteristics in a
shaft-type gap, the skin friction coefficient (C f) and flow versus Reynolds number (Re) at …

Model of skin friction coefficient in a supercritical CO2 turbine-alternator-compressor unit

L Hu, Q Deng, Z Liu, J Li, Z Feng - The Journal of Supercritical Fluids, 2023 - Elsevier
To accurately predict shaft-type and disk-type windage losses in gaps of supercritical CO 2
(sCO 2) turbine-alternator-compressor (TAC) units, the factors influencing skin friction …

High-Speed MW-Class Generator with Multi-Lane Slotless Winding for Hybrid-Electric Aircraft

EK Mikkelsen, A Matveev, JK Nøland - IEEE Access, 2023 - ieeexplore.ieee.org
This paper presents a comprehensive design and analysis of a high-speed, multi-lane,,,
slotless generator system tailored for hybrid-electric aircraft. The armature of this generator …

Calculating windage losses: A review

F Karg Bulnes, T Kerr, A Rimpel - … Expo: Power for …, 2022 - asmedigitalcollection.asme.org
Windage is the effect of aerodynamic drag on the surfaces of a rotating system due to fluid
shear effects. The fluid-friction losses that occur on the rotor of rotating machines often …