Abstract: A method for fuel quantity gauging that measures the quantity of liquid fuel in a fuel tank. The method includes the following steps performed while fuel is flowing out of the fuel tank: changing a volume of gas in the fuel tank (e.g., by injecting or venting gas) during a time interval; measuring a rate of change of the volume of gas in the fuel tank during the time interval; measuring a rate of flow of fuel out of the fuel tank during the time interval; measuring a first pressure and a first temperature of the gas in the fuel tank at the start of the time interval; measuring a second pressure and a second temperature of the gas in the fuel tank at the end of the time interval; and calculating a quantity of fuel in the fuel tank based on the acquired measurement data.

Abstract: A method for fuel quantity gauging that measures the quantity of liquid fuel in a fuel tank directly without the need to accurately locate fuel heights throughout the fuel tank using multiple fuel gauging probes. The method may comprise the following steps performed while fuel is flowing out of the fuel tank: (a) changing a volume of gas in the fuel tank (e.g., by injecting or venting gas) during a time interval; (b) measuring a rate of change of the volume of gas in the fuel tank during the time interval; (c) measuring a rate of flow of fuel out of the fuel tank during the time interval; (d) measuring a first pressure and a first temperature of the gas in the fuel tank at the start of the time interval; (e) measuring a second pressure and a second temperature of the gas in the fuel tank at the end of the time interval; and (f) calculating a quantity of fuel in the fuel tank based on the measurement data acquired in steps (c) through (f). Step (f) is performed by a processing unit.

Abstract: Presented is a system and method for providing reconfigurable AC interfaces for AC power systems. The method comprises embedding a reconfigurable AC interface for transferring power between power sources and loads, monitoring the voltage and current of the interfaces of the reconfigurable AC interface, and switching between power sources based on the monitoring. The system comprises a reconfigurable AC interface further comprising an inverter for converting DC power to AC, transfer switches with interfaces for connecting to the inverter, other transfer switches, and AC busses, and a controller that dynamically configures the transfer switches to transfer power between the inverter, and AC busses.

Abstract: Presented is a system and method for providing reconfigurable AC interfaces for AC power systems. The method comprises embedding a reconfigurable AC interface for transferring power between power sources and loads, monitoring the voltage and current of the interfaces of the reconfigurable AC interface, and switching between power sources based on the monitoring. The system comprises a reconfigurable AC interface further comprising an inverter for converting DC power to AC, transfer switches with interfaces for connecting to the inverter, other transfer switches, and AC busses, and a controller that dynamically configures the transfer switches to transfer power between the inverter, and AC busses.