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Thermal Analysis of Water Cooled ISG Based on a Thermal Equivalent Circuit Network
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 Title & Authors
Thermal Analysis of Water Cooled ISG Based on a Thermal Equivalent Circuit Network
Kim, Kyu-Seob; Lee, Byeong-Hwa; Jung, Jae-Woo; Hong, Jung-Pyo;
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 Abstract
Recently, the interior permanent synchronous motor (IPMSM) has been applied to an integrated starter and generator (ISG) for hybrid electric vehicles. In the design of such a motor, thermal analysis is necessary to maximize the power density because the loss is proportional to the power of a motor. Therefore, a cooling device as a heat sink is required internally. Generally, a cooling system designed with a water jacket structure is widely used for electric motors because it has advantages of simple structure and cooling effectiveness. An effective approach to analyze an electric machine with a water jacket is a thermal equivalent network. This network is composed of thermal resistance, a heat source, and thermal capacitance that consider the conduction, convection, and radiation. In particular, modeling of the cooling channel in a network is challenging owing to the flow of the coolant. In this paper, temperature prediction using a thermal equivalent network is performed in an ISG that has a water cooled system. Then, an experiment is conducted to verify the thermal equivalent network.
 Keywords
Cooling channel;Heat transfer of convection;Integrated starter and generator;Radiant heat;Thermal equivalent circuit network;Water jacket;
 Language
English
 Cited by
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Estimation of Rotor Type Using Ferrite Magnet Considering the Magnetization Process, IEEE Transactions on Magnetics, 2016, 52, 3, 1  crossref(new windwow)
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Evaluation of the Effect of Operating Parameters on Thermal Performance of an Integrated Starter Generator in Hybrid Electric Vehicles, Energies, 2015, 8, 8, 8990  crossref(new windwow)
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