Issued Patents 1997
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5701239 | High-voltage direct current transmission installation having a high voltage regulation capability | Per-Erik Bjorklund, Tomas Jonsson | 1997-12-23 |
| 5677852 | Method and arrangement for detecting and damping transcient oscillations at or near a natural resonant frequency in a power transmission system | — | 1997-10-14 |
| 5627735 | Method and device for compensation of unbalance in a series compensated converter station | Per-Erik Bjorklund, Tomas Jonsson | 1997-05-06 |
| 5621626 | Method and device for control of an installation for transmission of high-voltage direct current | Per-Erik Bjorklund, Tomas Jonsson | 1997-04-15 |