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Cooling Concepts for High Power Density Magnetic Devices

Author:
Biela, Juergen   Kolar, Johann W.   


Journal:
IEEJ Transactions on Industry Applications


Issue Date:
2008


Abstract(summary):

In the area or power electronics there is a general trend to higher power densities. In order to increase the power density the systems must be designed optimally concerning topology, semiconductor selection, etc. and the volume of the components must be decreased. The decreasing volume comes along with a reduced surface for cooling. Consequently, new cooling methods are required. In the paper an indirect air cooling system for magnetic devices which combines the transformer with a heat sink and a heat transfer component is presented. Moreover, an analytic approach for calculating the temperature distribution is derived and validated by measurements. Based on these equations a transformer with an indirect air cooling system is designed for a 10 kW telecom power supply.


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