Thermal Performance of Motor and Inverter in an Integrated Starter Generator System for a Hybrid Electric Vehicle

Title
Thermal Performance of Motor and Inverter in an Integrated Starter Generator System for a Hybrid Electric Vehicle
Author(s)
김성철
Keywords
DRIVEN; DESIGN
Issue Date
201311
Publisher
MDPI AG
Citation
ENERGIES, v.6, no.11, pp.6102 - 6119
Abstract
If the integrated starter generator (ISG) motor and inverter operate under continuously high loading conditions, the system's performance and durability will decrease and the heat dissipation requirements will increase. Therefore, in this study, we developed two cooling designs for the ISG motor and inverter, and then carried out both a model analysis and an experiment on the fluid flow and thermal characteristics of the system under various operating conditions. As the outdoor temperature increased from 25 degrees C to 95 degrees C, the coil temperature of the air-cooled motor increased by about 82 degrees C. Under the harsh-air condition of 95 degrees C, the coil of the air-cooled motor increased to a maximum temperature of about 158.5 degrees C. We also determined that the temperature of the metal-oxide-semiconductor field-effect transistor (MOSFET) chip in the liquid-cooled inverter increased to a maximum temperature of about 96.8 degrees C under a coolant flow rate of 4 L/min and a coolant temperature of 65 degrees C. The observed thermal performance of the ISG motor and inverter using the proposed cooling structures was found to be sufficient for heat loads under various real driving conditions for a hybrid electric vehicle (HEV).
URI
http://hdl.handle.net/YU.REPOSITORY/28592http://dx.doi.org/10.3390/en6116102
ISSN
1996-1073
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공과대학 > 기계공학부 > Articles
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