# US 12,007,419 B2 · Systems and methods for generator control > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,007,419 B2 - Document ID: US12007419B2 - Status: Granted - Kind: B2 - Application number: 17/235,377 - Filed: 2021-04-20 - Published: 2021-11-04 - Granted: 2024-06-11 - Earliest claimed: 2020-04-20 - Assignees: Hamilton Sundstrand Corporation - Applicants: Hamilton Sundstrand Corporation - Inventors: Hemanth Kumar Pennam; Adrian E. Vandergrift - Web page: https://patentgrep.com/patent/US12007419B2 ## CPC - G01R 19/2513: {Arrangements for monitoring electric power systems, e.g. power lines or loads; Logging} - H03K 17/18: Modifications for indicating state of switch - Y02B 70/3225: Demand response systems, e.g. load shedding, peak shaving - Y04S 20/222: Demand response systems, e.g. load shedding, peak shaving - G01R: MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES (indicating correct tuning of resonant circuits H03J3/12) - H03K: PULSE TECHNIQUE (measuring pulse characteristics G01R; modulating sinusoidal oscillations with pulses H03C; transmission of digital information H04L; discriminator circuits detecting phase difference between two signals by counting or integrating cycles of oscillation H03D3/04; automatic control, starting, synchronisation or stabilisation of generators of electronic oscillations or pulses where the type of generator is irrelevant or unspecified H03L; coding, decoding or code conversion, in general H03M) - Y02B: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS - Y04S: SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS ## Abstract A power quality monitor (PQM) module includes a solid-state semi-conductor switch having a voltage input, two signal inputs and two voltage outputs. A voltage input line is electrically connected to the voltage input. A PQM signal input line is operatively connected to at least one of the two signal inputs. A voltage output line is electrically connected to one of the two voltage outputs to provide power to a load. A method of controlling a GCB includes opening a solid-state semi-conductor switch when a PQM signal is powered at a first logic voltage. The method includes closing the solid-state semi-conductor switch when a PQM signal is powered at a second logic voltage lower than the first logic voltage to allow a voltage from a GCU to go to the GCB. ## Claims ### Claim 1 A power quality monitor (PQM) module, comprising: a solid-state semi-conductor switch having a voltage input, two signal inputs and two voltage outputs; a voltage input line electrically connected to the voltage input; a PQM signal input line operatively connected to at least one of the two signal inputs; a voltage output line electrically connected to one of the two voltage outputs to provide power to a load; and a diode along the voltage input line, wherein a power positive voltage input is electrically connected to the diode, wherein a resistor is positioned between the power positive voltage input and the diode to limit current from the power positive voltage input when a generator control breaker (GCB) close voltage is not present along the voltage input line. ### Claim 2 (depends on 1) The PQM module of claim 1, further comprising a differential amplifier along the voltage output line. ### Claim 3 (depends on 1) The PQM module of claim 1, further comprising a comparator along the voltage output line. ### Claim 4 (depends on 1) The PQM module of claim 1, further comprising a circuit between the voltage input line and the PQM signal input line. ### Claim 5 (depends on 4) The PQM module of claim 4, wherein the circuit includes a resistor. ### Claim 6 (depends on 4) The PQM module of claim 4, wherein the circuit includes a zener diode clamp. ### Claim 7 (depends on 1) The PQM module of claim 1, wherein the voltage input line provides a nominal 28V. ### Claim 8 (depends on 1) The PQM module of claim 1, wherein the voltage output line is a first voltage output line, wherein the PQM module includes a second voltage output line electrically connected to a second of the two voltage outputs to provide sense voltage. ### Claim 9 (depends on 8) The PQM module of claim 8, further comprising a logic detector along the second voltage output line electrically connected downstream from the second voltage output. ### Claim 10 (depends on 1) The PQM module of claim 1, further comprising a NOT gate along the PQM signal input line. ### Claim 11 A generator control system, comprising: a generator control unit (GCU); a power quality monitor (PQM) module operatively connected to the GCU, wherein the PQM module includes: a solid-state semi-conductor switch having a voltage input, two signal inputs and two voltage outputs; a voltage input line electrically connected to receive a voltage from the GCU and electrically connected to the voltage input; a PQM signal input line operatively connected to at least one of the two signal inputs; and a voltage output line electrically connected to one of the two voltage outputs; a generator control breaker (GCB) operatively connected to the voltage output line of the PQM module; and a diode positioned along the voltage input line, wherein a power positive voltage input is electrically connected to the diode, wherein a resistor is positioned between the power positive voltage input and the diode to limit current from the power positive voltage input when a GCB close voltage is not present along the voltage input line. ### Claim 12 (depends on 11) The generator control system of claim 11, further comprising a differential amplifier along the voltage output line between one of the two voltage outputs and the GCB. ### Claim 13 (depends on 11) The generator control system of claim 11, further comprising a comparator along the voltage output line between one of the two voltage outputs and the GCB. ### Claim 14 (depends on 11) The generator control system of claim 11, wherein the GCU provides 28V to the voltage input line. ### Claim 15 A power quality monitor (PQM) module for controlling a generator control breaker (GCB) the PQM module comprising: a GCB close coil voltage input; a power positive voltage input; a solid-state semi-conductor switch having a voltage input in selective electrical communication with at least one of the GCB close coil voltage input or the power positive voltage input, two signal inputs and two voltage outputs; a voltage input line electrically connected to the voltage input; a PQM signal input line operatively connected to at least one of the two signal inputs; a voltage output line electrically connected to one of the two voltage outputs to provide power to a GCB load; and a diode along the voltage input line, wherein the power positive voltage input is electrically connected to the diode, wherein a resistor is positioned between the power positive voltage input and the diode to limit current from the power positive voltage input when a GCB close voltage is not present along the voltage input line.