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Energies 2013, 6(11), 6102-6119; doi:10.3390/en6116102
Article

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

Received: 13 September 2013; in revised form: 5 November 2013 / Accepted: 15 November 2013 / Published: 22 November 2013
(This article belongs to the Special Issue Advances in Hybrid Vehicles)
Download PDF [1415 KB, uploaded 22 November 2013]
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 °C to 95 °C, the coil temperature of the air-cooled motor increased by about 82 °C. Under the harsh-air condition of 95 °C, the coil of the air-cooled motor increased to a maximum temperature of about 158.5 °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 °C under a coolant flow rate of 4 L/min and a coolant temperature of 65 °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).
Keywords: thermal performance; integrated starter generator; motor; inverter; heat dissipation; cooling structure thermal performance; integrated starter generator; motor; inverter; heat dissipation; cooling structure
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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MDPI and ACS Style

Kim, S.C. Thermal Performance of Motor and Inverter in an Integrated Starter Generator System for a Hybrid Electric Vehicle. Energies 2013, 6, 6102-6119.

AMA Style

Kim SC. Thermal Performance of Motor and Inverter in an Integrated Starter Generator System for a Hybrid Electric Vehicle. Energies. 2013; 6(11):6102-6119.

Chicago/Turabian Style

Kim, Sung C. 2013. "Thermal Performance of Motor and Inverter in an Integrated Starter Generator System for a Hybrid Electric Vehicle." Energies 6, no. 11: 6102-6119.


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