Abstract: The present disclosure is directed to turbine engines and systems for active stability control of rotating compression systems utilizing an electric machine operatively coupled thereto. In one exemplary aspect, an electric machine operatively coupled with a compression system, e.g., via a shaft system, is controlled to provide shaft damping for instability fluctuations of the pressurized fluid stream within the compression system. Based on control data indicative of a system state of the compression system, a control parameter of the electric machine is adjusted to control or change an output of the shaft system. Adjusting the shaft system output by adjusting one or more control parameters of the electric machine allows the compression system to dampen instability fluctuations of the fluid stream within the compression system. A method for active stability control of a compression system operatively coupled with an electric machine via a shaft system is also provided.

Abstract: The present disclosure is directed to turbine engines and systems for active stability control of rotating compression systems utilizing an electric machine operatively coupled thereto. In one exemplary aspect, an electric machine operatively coupled with a compression system, e.g., via a shaft system, is controlled to provide shaft damping for instability fluctuations of the pressurized fluid stream within the compression system. Based on control data indicative of a system state of the compression system, a control parameter of the electric machine is adjusted to control or change an output of the shaft system. Adjusting the shaft system output by adjusting one or more control parameters of the electric machine allows the compression system to dampen instability fluctuations of the fluid stream within the compression system. A method for active stability control of a compression system operatively coupled with an electric machine via a shaft system is also provided.

Abstract: A power distribution system and method can include a controller and a set of power-using devices. Each power-using device in the set can include a sensor configured to measure a parameter and transmit a sensor signal representing the parameter to the controller, and the controller can respond to the transmitted sensor signal.

Abstract: A method for operating a gas turbine engine having a starter-electric generator driven by one of a plurality of shafts of the gas turbine engine is provided. The method includes determining a desired amount of thrust to be produced by the gas turbine engine, as well as a desired amount of electrical power to be generated by the starter-electric generator of the gas turbine engine. The method operates the gas turbine engine to produce the desired amount of thrust, while producing less than the desired amount of electrical power using the starter-electric generator. Producing less than the desired amount of electrical power using the starter-electric generator allows for the desired amount of thrust production, or allows for the desired amount of thrust production more quickly.

Abstract: An electrical fault detecting system (10) for a circuit includes a conductor (20) delivering an electrical signal from a source (12) to a destination (14), a sheath (22) encircling the conductor, and a fault detection circuit (18). The sheath further includes an electrical insulator layer (24) and a conductive shield (26) encircling the conductor. The fault detection circuit is configured to detect a change in the electrical characteristics of the conductor and/or conductor sheath.

Abstract: An electric machine includes a stator assembly including a first stator segment and a second stator segment, the first and second stator segments each including a plurality of laminations extending generally along a circumferential direction, each pair of adjacent laminations of the first and second stator segments defining a gap therebetween. The first and second stator segments are assembled together such that the laminations of the first stator segment are arranged at least partially in the gaps between the laminations of the second stator segment.

Abstract: The present disclosure is directed to turbine engines and systems for active stability control of rotating compression systems utilizing an electric machine operatively coupled thereto. In one exemplary aspect, an electric machine operatively coupled with a compression system, e.g., via a shaft system, is controlled to provide shaft damping for instability fluctuations of the pressurized fluid stream within the compression system. Based on control data indicative of a system state of the compression system, a control parameter of the electric machine is adjusted to control or change an output of the shaft system. Adjusting the shaft system output by adjusting one or more control parameters of the electric machine allows the compression system to dampen instability fluctuations of the fluid stream within the compression system. A method for active stability control of a compression system operatively coupled with an electric machine via a shaft system is also provided.

Abstract: A power distribution system, includes a first current loop connected with a set of low voltage electrical loads, a second current loop connected with a set of high voltage electrical loads, at least two generator systems having respective power outputs, and a controller module configured to selectively connect the respective power outputs to at least one of the first or second current loops.

Abstract: A power distribution system and method can include a controller and a set of power-using devices. Each power-using device in the set can include a sensor configured to measure a parameter and transmit a sensor signal representing the parameter to the controller, and the controller can respond to the transmitted sensor signal.

Abstract: A power generation system includes an electric generator mechanically driven by a variable speed kinetic source, a first power conversion system connected with an output of the electric generator, and a second power conversion system connected with the output of the electric generator, wherein the electric generator and power conversion systems are adapted to convert the output of the electric generator to a predetermined direct current (DC) voltage.

Abstract: An apparatus and method for a generator assembly for a drive train such as a rotatable turbine engine assembly. The generator assembly includes at least first and second generators mechanically coupled to the drive train. First and second dampers are operably coupled to the first and second generators, respectively, to selectively damp the first and second generators. Damping the first and second generators can reduce or eliminate both common mode and differential mode torsional oscillations from the generators to the drive train.

Abstract: A power distribution system can include a controller and a set of power-using devices. Each power-using device in the set can include a sensor configured to measure a parameter and transmit a sensor signal representing the parameter to the controller, and the controller can respond to the transmitted sensor signal.

Abstract: A power system and method of operating the power system includes a first power source and a second power source arranged in a series, a first electrical load and a second electrical load arranged in series with first and second power sources, and a set of bypass current paths independently associated with at least a subset of the first power source, the second power source, the first electrical load, and the second electrical load.

Abstract: A power generation system includes an electric generator mechanically driven by a variable speed kinetic source, a first power conversion system connected with an output of the electric generator, and a second power conversion system connected with the output of the electric generator, wherein the electric generator and power conversion systems are adapted to convert the output of the electric generator to a predetermined direct current (DC) voltage.

Abstract: An electric machine includes a stator assembly including a first stator segment and a second stator segment, the first and second stator segments each including a plurality of laminations extending generally along a circumferential direction, each pair of adjacent laminations of the first and second stator segments defining a gap therebetween. The first and second stator segments are assembled together such that the laminations of the first stator segment are arranged at least partially in the gaps between the laminations of the second stator segment.

Abstract: An apparatus and method of operating a set of generators supplying power to a common power bus, includes obtaining a first generator speed signal and a second generator speed signal, determining a common mode torsional oscillation value and a differential mode torsional oscillation value, determining a first generator share command and a second generator share command based on the common mode torsional oscillation value and the differential mode torsional oscillation value, and applying the first and second generator share commands.

Abstract: An apparatus and method of operating a set of generators supplying power to a common power bus, includes obtaining a first generator speed signal and a second generator speed signal, determining a common mode torsional oscillation value and a differential mode torsional oscillation value, determining a first generator share command and a second generator share command based on the common mode torsional oscillation value and the differential mode torsional oscillation value, and applying the first and second generator share commands.

Abstract: A method for controlling the supply of power to a power system for an aircraft having a plurality of power-consuming components includes supplying power to the power system with a generator having a power output, determining a power requirement of the power system, and supplying the power to the power-consuming components.

Abstract: A power system and method of operating the power system includes a first power source and a second power source arranged in a series, a first electrical load and a second electrical load arranged in series with first and second power sources, and a set of bypass current paths independently associated with at least a subset of the first power source, the second power source, the first electrical load, and the second electrical load.

Abstract: A power distribution system can include a controller and a set of power-using devices. Each power-using device in the set can include a sensor configured to measure a parameter and transmit a sensor signal representing the parameter to the controller, and the controller can respond to the transmitted sensor signal.