Abstract
A new low-leakage-inductance low-resistance
design approach to low-voltage high-power isolated boost
converters is presented. Very low levels of parasitic circuit
inductances are achieved by optimizing transformer design
and circuit lay-out. Primary side voltage clamp circuits can
be eliminated by the use of power MOSFETs fully rated for
repetitive avalanche. Voltage rating of primary switches can
now be reduced, significantly reducing switch on-state
losses. Finally, silicon carbide rectifying diodes allow fast
diode turn-off, further reducing losses. Test results from a
1.5 kW full-bridge boost converter verify theoretical
analysis and demonstrate very high efficiency. Worst case
efficiency, at minimum input voltage maximum power, is
96.8 percent and maximum efficiency reaches 98 percent.
Original language | English |
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Title of host publication | 13th Power Electronics and Motion Control Conference |
Publisher | IEEE |
Publication date | 2008 |
Pages | 577 |
ISBN (Print) | 978-1-4244-1742-1 |
DOIs | |
Publication status | Published - 2008 |
Event | 13th Power Electronics and Motion Control Conference - Poznań, Poland Duration: 1 Sept 2008 → 3 Sept 2008 Conference number: 13 http://www.epe-pemc2008.put.poznan.pl/home_news.php |
Conference
Conference | 13th Power Electronics and Motion Control Conference |
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Number | 13 |
Country/Territory | Poland |
City | Poznań |
Period | 01/09/2008 → 03/09/2008 |
Internet address |
Keywords
- Switched-mode power supply
- Fuel cell system
- Efficiency
- Transformer
- SiC-device