Issued Patents All Time
Showing 1–12 of 12 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9667133 | Black start of a multilevel voltage source converter | Fabienne Chataignere, Lars Döfnäs, Rolf Ottersten, Patrik Sandquist | 2017-05-30 |
| 9065326 | Switching module for use in a device to limit and/or break the current of a power transmission or distribution line | Jürgen Häfner, Peter Lundberg, Ulrich Schlapbach, Bo Biljenga | 2015-06-23 |
| 8896364 | Reliability in semiconductor device control | Jürgen Häfner, Mikael Davidsson | 2014-11-25 |
| 8779730 | Capacitor discharge in a cell based voltage source converter | Ying Jiang-Häfner, Lars Döfnäs | 2014-07-15 |
| 8400796 | Power converter with distributed cell control | Lars Döfnäs, Lennart Harnefors, Anders Pettersson, Gunnar Asplund | 2013-03-19 |
| 7239535 | Voltage source converter | Lars Döfnäs, Ying Jiang-Häfner | 2007-07-03 |
| 7206211 | Converter and a method for controlling a converter | Ingemar Blidberg, Kjell Svensson | 2007-04-17 |
| 6205039 | Device for supervising a high voltage converter station | Urban Astrom, Hans Björklund, Krister Nyberg, Gunnar Asplund | 2001-03-20 |
| 6185116 | HVDC power transmission system with cooling and switching device temperature detection | Urban Astrom, Krister Nyberg, Gunnar Asplund, Hans Björklund | 2001-02-06 |
| 6084787 | Device for supervising in a high voltage converter station | Krister Nyberg, Hans Björklund, Urban strom, Gunnar Asplund | 2000-07-04 |
| 5969956 | Method and a device for communication in a high voltage converter station | Krister Nyberg, Hans Björklund, Gunnar Asplund, Urban strom | 1999-10-19 |
| 5684465 | Method and means for supervision of valve units | Fras Robert Andersson | 1997-11-04 |