首页|Profitability of low-temperature power electronics and potential applications
Profitability of low-temperature power electronics and potential applications
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NSTL
Elsevier
This article presents an investigation of the profitability of cryogenic power electronics at different cooling and ambient temperatures。 Thermodynamic fundamentals of low-temperature refrigeration processes are considered and the Carnot efficiencies of state-of-the-art refrigerators are evaluated in order to establish the necessary power loss reduction for energetic profitability of low-temperature to cryogenic power electronic systems down to 77 K。 In this context， special attention is paid to two loss contributions in a power electronic system which， based on investigations on active and passive components， show the greatest potential for loss reduction at low temperatures。 These are the on-state losses of Si and GaN transistors and the DC winding losses of inductors。 The analysis shows that over the entire low temperature range， the loss reduction in a cryogenic converter can hardly compensate for the electrical power required to provide the necessary cooling capacity when cooling against an ambient temperature of 300 K。
NSTL
Elsevier
