Optimised Switching of a SiC MOSFET in a VSI using the Body Diode and additional Schottky Barrier Diode

被引：0
|
作者：
Horff, Roman [1 ]
Maerz, Andreas [1 ]
Lechler, Martin [2 ]
Bakran, Mark-M. [1 ]
机构：
[1] Univ Bayreuth, Dept Mechatron, Ctr Energy Technol, Univ Str 30, D-95447 Bayreuth, Germany
[2] Siemens AG, D-90441 Nurnberg, Germany
来源：
2015 17TH EUROPEAN CONFERENCE ON POWER ELECTRONICS AND APPLICATIONS (EPE'15 ECCE-EUROPE) | 2015年
关键词：
Silicon Carbide (SiC); Wide bandgap devices; Switching losses; MOSFET; Schottky diode;
D O I：
暂无
中图分类号：
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号：
0807 ; 0820 ;
摘要：
In this paper the switching behaviour of SiC MOSFETs is regarded with respect to the influence of the free-wheeling diode. A double pulse test was performed using two silicon carbide Schottky barrier diodes (SBD) of different rated currents and the intrinsic body diode of a silicon carbide MOSFET. The switching losses of these three combinations are analysed to find the best combination of MOSFET and antiparallel diode for the application in a voltage source inverter (VSI). The body diode was found to dissipate not negligible switching losses. The effect of a silicon carbide Schottky barrier diode in high current SiC power modules is shown. Calculating the power capability, it is shown that the MOSFET inverter without SBD has the higher power density.
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页数：11
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