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.
| Original language | English |
|---|---|
| Title of host publication | Nordic Wind Energy Conference 2009 : Future Energy |
| Publication date | 2009 |
| Publication status | Published - 2009 |
| Event | Nordic Wind Energy Conference 2009 : Future Energy - Duration: 1 Jan 2009 → … Conference number: 5 |
Conference
| Conference | Nordic Wind Energy Conference 2009 : Future Energy |
|---|---|
| Number | 5 |
| Period | 01/01/2009 → … |
Keywords
- switching loss
- IGBT
- snubber circuits