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Class Information
Number: 363/57
Name: Electric power conversion systems > Current conversion > Including automatic or integral protection means > For inverters > Thyristor inverter
Description: Subject matter wherein said D.C. to A.C. converter includes a switch means for interrupting current, at regular intervals, from the supply of said D.C., wherein said switch means comprises a bistable semiconductor means having three or more junctions (e.g., thyristor, etc.).

Sub-classes under this class:

Class Number Class Name Patents
363/58 Bridge type 229

Patents under this class:
1 2 3

Patent Number Title Of Patent Date Issued
8687391 Converter system and method for the operation of such a converter Apr. 1, 2014
8531262 Multi-site spare 3-phase transformer Sep. 10, 2013
8410736 Controllable rectification device and electric motor comprising the same Apr. 2, 2013
8354813 Inverter device, electric automobile in which the inverter device is mounted, and hybrid automobile in which the inverter device is mounted Jan. 15, 2013
8125747 Method for mitigating negative sequence effect resulting from non-symmetrical short circuit failure of synchronous electric machine based systems Feb. 28, 2012
7855900 Method and arrangement in connection with half-controlled network bridge Dec. 21, 2010
7576451 Self powered gate driver system Aug. 18, 2009
7499293 High voltage pulse power circuit Mar. 3, 2009
7436686 Reconfigurable voltage inverter with tolerance to failures Oct. 14, 2008
7388765 Method and arrangement in connection with a half-controlled network bridge Jun. 17, 2008
7072196 Multi-stage high voltage solid state switch Jul. 4, 2006
6882060 Turbine generating apparatus Apr. 19, 2005
6791852 Method for detecting and identifying shorted thyristors Sep. 14, 2004
6724313 Fault detection system Apr. 20, 2004
6594130 Method and circuit for the protection of a thyristor Jul. 15, 2003
6563723 Fault tolerant power supply circuit May. 13, 2003
6442049 Power conversion device with power source voltage drop detection unit Aug. 27, 2002
6404656 Control equipment for thyristor-controlled series capacitor equipment, and a method for control thereof Jun. 11, 2002
6236576 Method and a circuit for resonance inversion May. 22, 2001
6205040 Auxiliary resonant commutated pole three-point or multipoint converter Mar. 20, 2001
6205039 Device for supervising a high voltage converter station Mar. 20, 2001
5892675 AC current source circuit for converting DC voltage into AC current Apr. 6, 1999
5864475 Power converter Jan. 26, 1999
5844788 Voltage oscillating circuit and method Dec. 1, 1998
5798916 High power inverter pole employing series connected devices configured for reduced stray loop inductance Aug. 25, 1998
5796599 Self-powered gate driver board Aug. 18, 1998
5731967 Converter circuit arrangement with minimal snubber Mar. 24, 1998
5729446 Converter circuit arrangement with actively controllable current and voltage rise limiting means Mar. 17, 1998
5684465 Method and means for supervision of valve units Nov. 4, 1997
5579215 Power conversion device with snubber energy regenerating circuit Nov. 26, 1996
5483192 Gate power supply circuit Jan. 9, 1996
5450308 Gate power supply circuit Sep. 12, 1995
5434772 Control device for thyristor converter Jul. 18, 1995
5418706 Wide load matching capability power supply May. 23, 1995
5297014 Switching DC power supply apparatus Mar. 22, 1994
5291387 Switching voltage regulator with protective device against thermal breakdown Mar. 1, 1994
5262691 Gate turnoff thyristor control circuit with shorted gate detection Nov. 16, 1993
5260863 Control of a discontinuous current by a thyristor rectifier with inductive load Nov. 9, 1993
5208495 Static power switch incorporating semi-conductor May. 4, 1993
5155673 Thyristor converter protection method and apparatus Oct. 13, 1992
5124628 Gate pulse generator of a reactive power compensation device Jun. 23, 1992
5063338 Power module for electronic control of a DC motor Nov. 5, 1991
4924370 Low-loss and low-reactive power switching relief device for the semiconductor switches of an inverter May. 8, 1990
4920447 Method for protecting the gate unit for a GTO thyristor Apr. 24, 1990
4885657 Thyristor with turn-off facility and overvoltage protection Dec. 5, 1989
4873620 Voltage supply with recovery protection for a thyristor Oct. 10, 1989
4868731 Gate control circuit for a GTO thyristor Sep. 19, 1989
4853834 Device for maintaining the cut-off switching state of a thyristor that can be turned off Aug. 1, 1989
4812729 Protecting apparatus for secondary excitation type variable speed AC generator/motor Mar. 14, 1989
4797587 Triggering method for a thyristor switch Jan. 10, 1989

1 2 3

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