US 12,237,664 B2
Devices for active overvoltage protection including varistors and thyristors
Grigoris Kostakis, Athens (GR); Zafiris G. Politis, Athens (GR); Fotis Xepapas, Drama (GR); Alexis Chorozoglou, Drama (GR); and Christos Prevezianos, Drama (GR)
Assigned to RIPD RESEARCH AND IP DEVELOPMENT LTD., Nicosia (CY)
Filed by RIPD RESEARCH AND IP DEVELOPMENT LTD., Nicosia (CY)
Filed on Dec. 14, 2023, as Appl. No. 18/540,170.
Application 18/540,170 is a continuation of application No. 17/826,560, filed on May 27, 2022, granted, now 11,881,704.
Application 17/826,560 is a continuation of application No. 16/577,177, filed on Sep. 20, 2019, granted, now 11,374,396, issued on Jun. 28, 2022.
Application 16/577,177 is a continuation of application No. 15/389,870, filed on Dec. 23, 2016, granted, now 10,447,026, issued on Oct. 15, 2019.
Prior Publication US 2024/0120728 A1, Apr. 11, 2024
Int. Cl. H02H 3/22 (2006.01); H01C 7/12 (2006.01); H02H 9/00 (2006.01); H02H 9/04 (2006.01)
CPC H02H 3/22 (2013.01) [H01C 7/12 (2013.01); H02H 9/008 (2013.01); H02H 9/041 (2013.01); H02H 9/043 (2013.01)] 4 Claims
OG exemplary drawing
 
1. A method of providing power circuit protection, the method comprising:
sensing, using a trigger circuit, an overvoltage condition on a power line;
switching an overvoltage protection device into a conducting mode that is configured to clamp a voltage to a voltage limit corresponding to an operating voltage of the power circuit;
after switching the overvoltage protection device into the conducting mode, sensing that the overvoltage condition on the power line is not present; and
switching the overvoltage protection device into a non-conducting mode;
wherein the power circuit is an alternating current (AC) power circuit;
wherein the sensing the overvoltage condition may correspond to a first portion of a voltage waveform; and
wherein after switching the overvoltage protection into the non-conducting mode, the method comprises:
sensing, using the trigger circuit, another overvoltage condition corresponding to a second portion of the voltage waveform; and
switching the overvoltage protection device into the conducting mode that is configured to clamp the voltage to a second portion voltage waveform voltage limit.