Multi-winding Flyback Type Snubber for 10kV IGCT with Reduced Voltage Stress on Recovery Diodes
| Autor: | Siamak Shirmohammadi, Yongsug Suh |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
Computer science
business.industry 020208 electrical & electronic engineering Flyback transformer Electrical engineering 02 engineering and technology Converters Power (physics) law.invention Integrated gate-commutated thyristor 03 medical and health sciences Capacitor 0302 clinical medicine law Overvoltage 0202 electrical engineering electronic engineering information engineering Snubber business 030217 neurology & neurosurgery Voltage |
| Zdroj: | 2018 IEEE Energy Conversion Congress and Exposition (ECCE). |
| DOI: | 10.1109/ecce.2018.8558290 |
| Popis: | 10kV IGCT has the potential to push wind turbine systems to a higher power and voltage rating. Converters employing IGCTs need snubber and OVP circuit to limit the rate of current rising and peak over voltage across IGCT during turn on and turn off state respectively. The conventional RCD snubber which is used in such power converter dissipates a significant amount of power. This paper proposes an enhanced scheme of flyback type snubber comprising flyback transformer with multi-winding secondary wound on a magnetic core. The flyback snubber not only meets all of the IGCTs characteristics during on and off-state but also significantly saves the power. Unlike primitive concept of flyback-type snubber, the new scheme has less voltage stress across diodes which are recovering stored energy of di/dt snubber into DClink capacitor. Simulation and experimental results of IGCT with conventional RCD and flyback type snubber turn out the benefit of contributed scheme. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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