US 11,658,594 B2
System and method to detect low speed in a gas turbine generator
Boris Henry Rocha Mercado, Queretaro (MX); Jorge Fabian Soria Ortiz, Queretaro (MX); Hector Javier Herrera, Houston, TX (US); John Thanh Nguyen, Humble, TX (US); Nam Thanh Tran, Tomball, TX (US); Joel Keith Trombley, Houston, TX (US); and Randall John Kleen, Channelview, TX (US)
Assigned to General Electric Company, Schenectady, NY (US)
Filed by GENERAL ELECTRIC COMPANY, Schenectady, NY (US)
Filed on Oct. 21, 2019, as Appl. No. 16/658,772.
Prior Publication US 2021/0119561 A1, Apr. 22, 2021
Int. Cl. H02P 9/08 (2006.01); F01D 15/10 (2006.01); F01D 17/06 (2006.01); F02D 31/00 (2006.01); F03D 7/04 (2006.01); G05B 13/04 (2006.01); H02P 101/25 (2016.01)
CPC H02P 9/08 (2013.01) [F01D 15/10 (2013.01); F01D 17/06 (2013.01); F02D 31/001 (2013.01); F03D 7/045 (2013.01); G05B 13/04 (2013.01); F05D 2220/76 (2013.01); G05B 2219/2619 (2013.01); H02P 2101/25 (2015.01); H02P 2201/03 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A control system for a power generation system comprising a generator coupled to a turbine via a shaft, comprising:
a memory storing instructions; and
a processor coupled to the memory and configured to execute the instructions, wherein when the instructions are executed, cause the processor to:
receive a direct current (DC)-link voltage from an automatic voltage regulator (AVR), wherein the AVR is configured to control voltage characteristics of the generator;
determine a speed of the generator based on the DC-link voltage; and
determine if the generator has stopped based on the speed of the generator.