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Class Information
Number: 363/54
Name: Electric power conversion systems > Current conversion > Including automatic or integral protection means > For rectifiers > Semiconductor type > Thyristor
Description: Subject matter wherein the semiconductor device is a "Thyristor".
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7511879 |
Light source device and projector |
Mar. 31, 2009 |
| 7394675 |
Power supplying apparatus and power supplying method |
Jul. 1, 2008 |
| 7388765 |
Method and arrangement in connection with a half-controlled network bridge |
Jun. 17, 2008 |
| 7173834 |
Half-controlled silicon-controlled rectifying system and method thereof |
Feb. 6, 2007 |
| 7122994 |
Control apparatus for a starter/generator system |
Oct. 17, 2006 |
| 7050313 |
Aircraft AC-DC converter |
May. 23, 2006 |
| 6958923 |
Rectifying circuit |
Oct. 25, 2005 |
| 6952297 |
Method of differentially connecting photonic devices |
Oct. 4, 2005 |
| 6724643 |
Control system and method employing active temperature balance for controlling rectifier bridge |
Apr. 20, 2004 |
| 6704214 |
Excitation control system and method employing de-excitation trip logic |
Mar. 9, 2004 |
| 6618276 |
Power supplies having protection circuits |
Sep. 9, 2003 |
| 6611443 |
High voltage converter system |
Aug. 26, 2003 |
| 6567253 |
Apparatus to sense a silicon controlled rectifier short circuit |
May. 20, 2003 |
| 6563722 |
System and method for compensating for line imbalances in line commutated converters |
May. 13, 2003 |
| 6493245 |
Inrush current control for AC to DC converters |
Dec. 10, 2002 |
| 6442049 |
Power conversion device with power source voltage drop detection unit |
Aug. 27, 2002 |
| 6385066 |
Method and system for detecting a zero current level in a line commutated converter |
May. 7, 2002 |
| 6246597 |
A.C./D.C. converter having a linearly controllable one-way switch, and using no high voltage passive components |
Jun. 12, 2001 |
| 6204493 |
Fault tolerant electric current regulator |
Mar. 20, 2001 |
| 6163471 |
Damping of an oscillation in a plant for transmission of high voltage direct current |
Dec. 19, 2000 |
| 6134128 |
Method for protecting a high-performance power converter and a protection arrangement for executing the method |
Oct. 17, 2000 |
| 6084787 |
Device for supervising in a high voltage converter station |
Jul. 4, 2000 |
| 6055167 |
Pulse width modulated boost converter integrated with power factor correction circuit |
Apr. 25, 2000 |
| 6021035 |
Apparatus for protection of power-electronics in series compensating systems |
Feb. 1, 2000 |
| 6018473 |
Power supply and printing machine containing same |
Jan. 25, 2000 |
| 5986903 |
Control apparatus for a converter for transmitting electric power between an alternating voltage network and a direct voltage network |
Nov. 16, 1999 |
| 5982646 |
Voltage clamp snubbers for three level converter |
Nov. 9, 1999 |
| 5963440 |
Controlled three-phase rectifier with current comparison between rectifier segments |
Oct. 5, 1999 |
| 5852556 |
Power converter |
Dec. 22, 1998 |
| 5838555 |
Two-wire power supply electronic switch |
Nov. 17, 1998 |
| 5815387 |
Transformer protective apparatus having semiconductor and mechanical bypass means |
Sep. 29, 1998 |
| 5793622 |
Common turn-off circuit for a thyristor power converter |
Aug. 11, 1998 |
| 5754045 |
Power line switching apparatus |
May. 19, 1998 |
| 5729446 |
Converter circuit arrangement with actively controllable current and voltage rise limiting means |
Mar. 17, 1998 |
| 5715151 |
Control and protection system for AC-DC conversion system |
Feb. 3, 1998 |
| 5684465 |
Method and means for supervision of valve units |
Nov. 4, 1997 |
| 5654591 |
Uninterruptible power supply with passing neutral, comprising a twin step-up chopper |
Aug. 5, 1997 |
| 5646833 |
Apparatus and method for deriving power for switching a switch from voltage across the switch |
Jul. 8, 1997 |
| 5636113 |
Saturable reactor |
Jun. 3, 1997 |
| 5585758 |
Current source gate drive circuit for simultaneous firing of thyristors |
Dec. 17, 1996 |
| 5532562 |
Apparatus for controlling DC motor with H-bridge switching circuit |
Jul. 2, 1996 |
| 5515231 |
Thyristor valve arrester and DC power transmission thyristor valve using the same |
May. 7, 1996 |
| 5493154 |
Temperature share scheme |
Feb. 20, 1996 |
| 5452196 |
Protection system for thyristor valve having first and second reverse voltage detection circuits |
Sep. 19, 1995 |
| 5444610 |
High-power modulator |
Aug. 22, 1995 |
| 5384528 |
Method and apparatus for recognizing defects in a triggering system of a controlled series compensator |
Jan. 24, 1995 |
| 5371664 |
Line-commutated and self-commutated combined power conversion system |
Dec. 6, 1994 |
| 5309346 |
Transmission line fault current dynamic inverter control |
May. 3, 1994 |
| 5287288 |
Active power line conditioner with low cost surge protection and fast overload recovery |
Feb. 15, 1994 |
| 5272363 |
Bidirectional protection component |
Dec. 21, 1993 |
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