US 12,424,955 B2
Gas turbine with an electrically heated thermal energy storage system
Daniel Stack, Cambridge, MA (US); and Bao Truong, Canton, MA (US)
Assigned to Electrified Thermal Solutions, Inc., Medford, MA (US)
Filed by Electrified Thermal Solutions, Inc., Medford, MA (US)
Filed on Jul. 31, 2024, as Appl. No. 18/790,901.
Claims priority of provisional application 63/516,986, filed on Aug. 1, 2023.
Prior Publication US 2025/0047225 A1, Feb. 6, 2025
Int. Cl. H02P 9/00 (2006.01); F01D 15/10 (2006.01); F02C 6/00 (2006.01); F02C 6/14 (2006.01); H02P 101/25 (2016.01)
CPC H02P 9/006 (2013.01) [F01D 15/10 (2013.01); F02C 6/00 (2013.01); F02C 6/14 (2013.01); F05D 2260/42 (2013.01); H02P 2101/25 (2015.01)] 18 Claims
OG exemplary drawing
 
1. A gas turbine generator system configured to be electrically interconnected to an electrical grid via a first circuit breaker, the gas turbine generator system comprising:
a compressor configured to compress a received gas and output a pressurized gas flow;
an electrically heated thermal energy storage system; wherein the electrically heated thermal energy storage system is configured to receive at a fluid input the pressurized gas flow from the compressor, heat the pressurized gas flow, and output a heated and pressurized gas flow from a fluid output;
a gas turbine configured to receive the heated and pressurized gas flow from the fluid output of the electrically heated thermal energy storage system to cause the gas turbine to rotate and drive an electrical generator, wherein the electrical generator outputs electric power to the electrical grid via the first circuit breaker, operating in a normally closed position;
a controller configured to detect an opening of the first circuit breaker, thereby disconnecting the electrical generator from the electrical grid; the controller configured to operate in an overspeed protection mode, wherein the controller closes a first switch, in response to the opening of the first circuit breaker; wherein the first switch is connected to the output of the electrical generator and to an electrical input of the electrically heated thermal energy storage system, thereby electrically connecting the electrical generator to the electrical input of the electrically heated thermal energy storage system.