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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Huawu Liu Hongfei Wu Yangjun Lu Yan Xing Kai Sun |
| Copyright Year | 2014 |
| Description | Author affiliation: Jiangsu Key Lab. of New Energy & Power Conversion, Nanjing Univ. of Aeronaut. & Astronaut., Nanjing, China (Huawu Liu; Hongfei Wu; Yangjun Lu; Yan Xing) || Dept. of Electr. Eng., Tsinghua Univ., Beijing, China (Kai Sun) |
| Abstract | This paper analyzes a high efficient SiC MOSFET based inverter without externally antipa-rallelled diodes. To this end, steady-state performances of MOSFET channel and its body diode are demonstrated; proper control and modulation technique is applied to realize synchronous rectification of the inverter and to minimize the conduction loss of body diodes. Power loss analysis of the inverter under various junction temperatures is performed. Calculated results show it is unnecessary to antiparallel external diodes for the less than 0.15% efficiency improvement since external diodes will inevitably increase the system volume and harm the power density. At last, a 10 kW SiC MOSFET based prototype is built. Full load efficiency greater than 98% is achieved. Experimental results show that the three phase inverter exhibits high efficiency under various working conditions even without antiparalleled diodes. By removing the external diodes, system volume and cost of the inverter can be reduced and power density improved. This paper shows the possibility of utilizing body diodes and provides references for tradeoff making between power efficiency and power density of the inverter. |
| Sponsorship | IEEE Power Electron. Soc. |
| Starting Page | 163 |
| Ending Page | 167 |
| File Size | 919190 |
| Page Count | 5 |
| File Format | |
| ISBN | 9781479923250 |
| DOI | 10.1109/APEC.2014.6803304 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2014-03-16 |
| Publisher Place | USA |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Schottky diodes Silicon carbide MOSFET Inverters Switches Temperature measurement Junctions |
| Content Type | Text |
| Resource Type | Article |
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