Inventor · Hagfors, SE

Tomas Jonsson

39Patents
8h-index
72Co-inventors
78Inventor score

Filing activity: Sep 11, 1995 → Apr 8, 2016

Most-cited inventions

PatentTitleAreaCited byStatus
US8503202B2 Modular voltage source converter Emerging Cross-Sectional Technologies 37 Active
US6898095B2 Bidirectional VSC converter with a resonant circuit Electricity 26 Expired
US7554431B2 Multiphase induction device Electricity 17 Expired
US8400793B2 Method in a cascaded two-level converter, control device and computer program products Electricity 15 Active
US5666277A Series-compensated converter station Emerging Cross-Sectional Technologies 15 Expired
US8803358B2 HVDC switchyard and an HVDC switchyard system Electricity 12 Active
US5701239A High-voltage direct current transmission installation having a high voltage regulation capability Emerging Cross-Sectional Technologies 10 Expired
US6995994B2 Converter and a method for controlling a converter Electricity 8 Expired
US5627735A Method and device for compensation of unbalance in a series compensated converter station Emerging Cross-Sectional Technologies 7 Expired
US6404656B1 Control equipment for thyristor-controlled series capacitor equipment, and a method for control thereof Emerging Cross-Sectional Technologies 7 Expired
US7210081B1 Apparatus and methods for assessing reliability of assemblies using programmable logic devices Physics 7 Expired
US8942014B2 Converter cell for cascaded converters and a control system and method for operating a converter cell Emerging Cross-Sectional Technologies 5 Active
US8614904B2 Voltage source converter with switching cell bypass arrangement Emerging Cross-Sectional Technologies 5 Active
US5657213A Method and device for control of a series-compensated converter station Emerging Cross-Sectional Technologies 4 Expired
US6897749B2 Magnetic energy storage device Emerging Cross-Sectional Technologies 4 Expired
US8295370B2 Method and arrangement for improved link quality control Electricity 4 Active
US5694306A Method and device for control of a series-compensated converter station Emerging Cross-Sectional Technologies 3 Expired
US8937798B2 Method and control arrangement in a power system Emerging Cross-Sectional Technologies 2 Active
US8188726B2 Method and arrangement to determine the cell capacitor voltage of a cell of a multi-cell power converter Electricity 2 Active
US10122163B2 Scalable switchyard for interconnecting direct current power networks Electricity 2 Active
US8711591B2 AC/DC converter Emerging Cross-Sectional Technologies 2 Active
US8830708B2 Fault current limitation in DC power transmission systems Emerging Cross-Sectional Technologies 2 Active
US5621626A Method and device for control of an installation for transmission of high-voltage direct current Emerging Cross-Sectional Technologies 2 Expired
US9197068B2 Coordinated control of multi-terminal HVDC systems Emerging Cross-Sectional Technologies 2 Active
US9209679B2 Method and apparatus for transferring power between AC and DC power systems Emerging Cross-Sectional Technologies 2 Active

Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.