# US 10,374,426 B2 · Enhanced power signaling system > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,374,426 B2 - Document ID: US10374426B2 - Status: Granted - Kind: B2 - Application number: 15/722,242 - Filed: 2017-10-02 - Published: 2019-02-14 - Granted: 2019-08-06 - Earliest claimed: 2017-08-11 - Assignees: Hamilton Sundstrand Corporation - Applicants: Hamilton Sundstrand Corporation - Inventors: Michael Krenz; Ira W. Grimmett - Web page: https://patentgrep.com/patent/US10374426B2 ## CPC - G06F 1/263: {Arrangements for using multiple switchable power supplies, e.g. battery and AC (G06F1/30 takes precedence)} - G06F 1/30: Means for acting in the event of power-supply failure or interruption, e.g. power-supply fluctuations (for resetting only G06F1/24) - G06F 11/30: Monitoring - G06F 11/3058: {Monitoring arrangements for monitoring environmental properties or parameters of the computing system or of the computing system component, e.g. monitoring of power, currents, temperature, humidity, position, vibrations (thermal management in cooling arrangements of a computing system G06F1/206)} - H02J 3/00: Circuit arrangements for AC mains or AC distribution networks - H02J 3/14: by switching loads on to, or off from, the networks, e.g. progressively balanced loading - H02J 3/18: Arrangements for adjusting, eliminating or compensating reactive power in networks - H02J 3/38: Arrangements for feeding a single network from two or more generators or sources in parallel; Arrangements for feeding already energised networks from additional generators or sources in parallel - H02J 2105/12: supplying households or buildings - Y02B 70/3225: Demand response systems, e.g. load shedding, peak shaving - Y04S 20/222: Demand response systems, e.g. load shedding, peak shaving - G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N) - H02J: ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY - 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 system includes one or more loads operable responsive to electrical power. The power system also includes a power controller operable to monitor one or more power sources, selectively provide electrical power from the one or more power sources to the one or more loads, and provide one or more power system status indicators to the one or more loads. The one or more power system status indicators trigger a modification to a startup process or trigger a shutdown process of the one or more loads. ## Claims ### Claim 1 A power system comprising: one or more loads operable responsive to electrical power; and a power controller operable to monitor one or more power sources, selectively provide electrical power from the one or more power sources to the one or more loads, and provide one or more power system status indicators to the one or more loads, the one or more power system status indicators triggering a modification to a startup process or triggering a shutdown process of the one or more loads. ### Claim 2 (depends on 1) The power system of claim 1, wherein the one or more power system status indicators comprise a power warning signal indicative of an impending interruption of electrical power to a first load of the one or more loads within a predetermined period of time, and the first load is operative to initiate an accelerated shutdown process responsive to the power warning signal and store recovery data prior to the predetermined period of time elapsing. ### Claim 3 (depends on 2) The power system of claim 2, wherein the power controller sets the power warning signal based on detecting a reduction in power supply capacity of the one or more power sources. ### Claim 4 (depends on 1) The power system of claim 1, wherein the power controller is operable to monitor a period of time that the one or more loads were depowered prior to startup, and the one or more power system status indicators comprise a cold start signal indicative of the one or more loads being depowered for a period of time that is greater than a threshold period before receiving electrical power at startup. ### Claim 5 (depends on 4) The power system of claim 4, wherein the one or more loads are operable to select between performing a normal startup process and an accelerated startup process based on the cold start signal, and the accelerated startup process executes a reduced number of startup diagnostics relative to the normal startup process. ### Claim 6 (depends on 1) The power system of claim 1, wherein the power controller is operable to monitor a power status of two or more of the one or more loads identified as partners, and the one or more power system status indicators comprise a partner alive signal indicative of the power status of the partners. ### Claim 7 (depends on 6) The power system of claim 6, wherein a first load of the one or more loads is operable to check the partner alive signal associated with a second load identified as a partner of the first load and modify a synchronization operation between the first load and the second load based on a state of the partner alive signal. ### Claim 8 (depends on 7) The power system of claim 7, wherein electrical power provided to the second load is controlled by a second power controller, the power controller sends the power status of the first load to the second power controller, and the power controller receives the power status of the second load from the second power controller. ### Claim 9 A controller of a power system, the controller comprising: memory; and a processor operable to execute a plurality of instructions stored in the memory to perform: providing electrical power from one or more power sources to one or more loads; monitoring the one or more power sources for a reduction in power supply capacity; providing a power warning signal indicative of an impending interruption of electrical power to a first load of one or more loads within a predetermined period of time; depowering the first load based on elapsing of the predetermined period of time; and maintaining a power off state for the first load for a second predetermined period of time. ### Claim 10 (depends on 9) The controller of claim 9, wherein the processor operable to execute the plurality of instructions stored in the memory to perform: monitoring a period of time that the one or more loads were depowered prior to startup; and outputting a cold start signal indicative of the one or more loads being depowered for a period of time that is greater than a threshold period before receiving electrical power at startup. ### Claim 11 (depends on 10) The controller of claim 10, wherein the processor operable to execute the plurality of instructions stored in the memory to perform: monitoring a power status of two or more of the one or more loads identified as partners; and outputting a partner alive signal indicative of the power status of the partners. ### Claim 12 (depends on 11) The controller of claim 11, wherein the controller sends the power status of a first load to a second controller, and the controller receives the power status of a second load from the second controller. ### Claim 13 A method comprising: monitoring one or more power sources by a power controller; selectively providing electrical power from the one or more power sources to one or more loads by the power controller; and providing one or more power system status indicators to the one or more loads, the one or more power system status indicators triggering a modification to a startup process or triggering a shutdown process of the one or more loads. ### Claim 14 (depends on 13) The method of claim 13, wherein the one or more power system status indicators comprise a power warning signal indicative of an impending interruption of electrical power to a first load of the one or more loads within a predetermined period of time, and the method further comprises: initiating an accelerated shutdown process by the first load responsive to the power warning signal; and storing recovery data prior to the predetermined period of time elapsing. ### Claim 15 (depends on 14) The method of claim 14, further comprising: setting the power warning signal by the power controller based on detecting a reduction in power supply capacity of the one or more power sources. ### Claim 16 (depends on 13) The method of claim 13, further comprising: monitoring, by the power controller, a period of time that the one or more loads were depowered prior to startup, wherein the one or more power system status indicators comprise a cold start signal indicative of the one or more loads being depowered for a period of time that is greater than a threshold period before receiving electrical power at startup. ### Claim 17 (depends on 16) The method of claim 16, further comprising: selecting, by the one or more loads, between performing a normal startup process and an accelerated startup process based on the cold start signal, wherein the accelerated startup process executes a reduced number of startup diagnostics relative to the normal startup process. ### Claim 18 (depends on 13) The method of claim 13, further comprising: monitoring, by the power controller, a power status of two or more of the one or more loads identified as partners, wherein the one or more power system status indicators comprise a partner alive signal indicative of the power status of the partners. ### Claim 19 (depends on 18) The method of claim 18, further comprising: checking, by a first load of the one or more loads, the partner alive signal associated with a second load identified as a partner of the first load; and modifying a synchronization operation between the first load and the second load based on a state of the partner alive signal. ### Claim 20 (depends on 19) The method of claim 19, wherein electrical power provided to the second load is controlled by a second power controller and the method further comprises: sending the power status of the first load from the power controller to the second power controller; and receiving, by the power controller, the power status of the second load from the second power controller.