Performance Evaluation of an In-Wheel Motor Cooling System in an Electric Vehicle/Hybrid Electric Vehicle

Title
Performance Evaluation of an In-Wheel Motor Cooling System in an Electric Vehicle/Hybrid Electric Vehicle
Author(s)
임동현[임동현]이무연[이무연]이호성[이호성]김성철
Keywords
THERMAL PERFORMANCE; MARKET
Issue Date
201402
Publisher
MDPI AG
Citation
ENERGIES, v.7, no.2, pp.961 - 971
Abstract
High power and miniaturization of motors in an in-wheel drive system, which is installed inside the wheels of a vehicle, are required for directly driving the wheels. In addition, an efficient cooling system is required to ensure high driving performance and durability. This study experimentally evaluated the heat dissipation performance of a 35-kW-class large-capacity in-wheel motor equipped with an internal-circulation-type oil-cooling system that exhibits high cooling performance and can be easily miniaturized to this motor. Temperatures of the coil and stator core of cooling systems with and without a radiator were measured in real time under in-wheel motor driving conditions. It was found that operating the cooling system at a continuous-rating maximum speed without the radiator was difficult. We confirmed that under continuous-rating base speed and continuous-rating maximum speed driving conditions, the cooling system with the radiator showed thermally stable operation. Furthermore, under maximum-rating base speed and maximum-rating maximum speed driving conditions, the cooling system with the radiator provided additional driving times of approximately 22 s and 2 s, respectively.
URI
http://hdl.handle.net/YU.REPOSITORY/33300http://dx.doi.org/10.3390/en7020961
ISSN
1996-1073
Appears in Collections:
공과대학 > 기계공학부 > Articles
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