Conference paper
Active Snubber Circuit for High Power Inverter Leg
In
Nordic Wind Energy Conference 2009
—
2009
Abstract
Abstract— High power converters in the conventional 6 pulse configuration with 6 switching elements IGBTs (Insulated Gate Bipolar Transistor) are pushed to the limit of power. Especially the switching loss is high. This reduces the switching frequency due to cooling problems. Passive snubber circuits have been introduced to reduce the loss even though some of the loss is removed from the IGBT to the snubber resistance.
This paper takes also the next step to introduce the active Undeland snubber which in principle is lossless. The paper describes this solution together with some simulations indicating that the switching loss is reduced. Comparison between hard switched, passive and active snubber is done.
| Language: | English |
|---|---|
| Year: | 2009 |
| Proceedings: | Nordic Wind Energy Conference 2009 : Future Energy |
| Journal subtitle: | Future Energy |
| Types: | Conference paper |
| ORCIDs: | Rasmussen, Tonny Wederberg |
Keywords
