Evaluation of the Effect of Operating Parameters on Thermal Performance of an Integrated Starter Generator in Hybrid Electric Vehicles

Title
Evaluation of the Effect of Operating Parameters on Thermal Performance of an Integrated Starter Generator in Hybrid Electric Vehicles
Author(s)
김성철이무연[이무연]임동현[임동현]
Keywords
MAGNET SYNCHRONOUS MOTOR; PERMANENT-MAGNET; INVERTER; SYSTEM; DESIGN
Issue Date
201508
Publisher
MDPI AG
Citation
ENERGIES, v.8, no.8, pp.8990 - 9008
Abstract
The belt-driven-type integrated starter generator motor in a hybrid electric vehicle is vulnerable to thermal problems owing to its high output power and proximity to the engine. These problems may cause demagnetization and insulation breakdown, reducing the performance and durability of the motor. Hence, it is necessary to evaluate the thermal performance and enhance the cooling capacity of the belt-driven type Integrated Starter Generator. In this study, the internal temperature variations of the motor were investigated with respect to the operating parameters, particularly the rotation speed and environment temperature. At a maximum ambient temperature of 105 degrees C and rotation speed (motor design point) of 4500 rpm, the coil of the motor was heated to approximately 189 degrees C in generating mode. The harsh conditions of the starting mode were analyzed by assuming that the motor operates during the start-up time at a maximum ambient temperature of 105 degrees C and rotation speed (motor design point) of 800 rpm; the coil was heated to approximately 200 degrees C, which is close to the insulation temperature limit. The model for analyzing the thermal performance of the ISG was verified by comparing its results with those obtained through a generating-mode-based experiment.
URI
http://hdl.handle.net/YU.REPOSITORY/31310http://dx.doi.org/10.3390/en8088990
ISSN
1996-1073
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공과대학 > 기계공학부 > Articles
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