A hybrid gas-electric turbine engine for turboprop or turboshaft applications is disclosed together with associated methods. In various embodiments disclosed herein, the turbine engine comprises a turbine configured to be driven by a flow of combustion gas; a turbine shaft configured to be driven by the turbine and transfer power to a load coupled to the turbine engine and an electric motor configured to transfer power to the load coupled to the turbine engine. The rotor may have a rotor axis of rotation that is radially offset from a shaft axis of rotation of the turbine shaft. In some embodiments, the electric motor may be a multi-rotor electric motor.

A hybrid gas-electric turbine engine for turboprop or turboshaft applications is disclosed together with associated methods. In various embodiments disclosed herein, the turbine engine comprises a turbine configured to be driven by a flow of combustion gas; a turbine shaft configured to be driven by the turbine and transfer power to a load coupled to the turbine engine and an electric motor configured to transfer power to the load coupled to the turbine engine. The rotor may have a rotor axis of rotation that is radially offset from a shaft axis of rotation of the turbine shaft. In some embodiments, the electric motor may be a multi-rotor electric motor.

The invention relates to an in particular redundant electrical machine for driving a propulsion means with improved protection against failure. The machine includes for example two submachines consisting in each case of a stator winding system and a rotor, wherein the two rotors are arranged on a common shaft in a rotationally fixed manner, by way of which shaft the propulsion means is ultimately set in motion. Also provided is a movement device which has the effect, in the case of a fault in one of the stator winding systems, that the air gap between the stator winding system in question and the associated rotor is increased for the corresponding faulty submachine such that the electromagnetic interaction between these components is suppressed.

An actuator includes a yoke extending about a rotation axis. A coil is wrapped about the yoke. A rotor having a direct axis and a quadrature axis is supported for rotation about a rotation axis relative to the yoke. The rotor has a reluctance along the direct axis that is different than a reluctance along the quadrature axis to rotate the rotor when current is applied to the coil.

A power plant and method for operating a power plant having a gas turbine and a generator which are arranged on a section, a shaft which connects the gas turbine to the generator in order to transmit a force, and a clutch which is arranged in the shaft between the gas turbine and the generator such that the shaft includes at least two sub-shafts, a first sub-shaft between the generator and the clutch and a second sub-shaft, which is referred to as a gas turbine intermediate shaft, between the gas turbine and the clutch. An electric motor is arranged in the section between the clutch and the gas turbine in order to accelerate the gas turbine.

A power plant and method for operating a power plant having a gas turbine and a generator which are arranged on a section, a shaft which connects the gas turbine to the generator in order to transmit a force, and a clutch which is arranged in the shaft between the gas turbine and the generator such that the shaft includes at least two sub-shafts, a first sub-shaft between the generator and the clutch and a second sub-shaft, which is referred to as a gas turbine intermediate shaft, between the gas turbine and the clutch. An electric motor is arranged in the section between the clutch and the gas turbine in order to accelerate the gas turbine.

A dual motor drive assembly comprises a housing, a shaft rotatably mounted with respect to the housing, a first gear connected to and configured to rotate with the shaft, and first and second motors, each having an output driving a respective output gear, the output gears being engaged with the first gear, in which each motor comprises a permanent magnet motor that has the same number of poles and stators such that each motor produces the same pattern of cogging torque over a complete mechanical revolution of the motor.

A dual motor drive assembly comprises a housing, a shaft rotatably mounted with respect to the housing, a first gear connected to and configured to rotate with the shaft, and first and second motors, each having an output driving a respective output gear, the output gears being engaged with the first gear, in which each motor comprises a permanent magnet motor that has the same number of poles and stators such that each motor produces the same pattern of cogging torque over a complete mechanical revolution of the motor.

An apparatus for assembling a permanent-magnet electric motor to be used particularly in pumping devices, which comprises a tubular element made of non-magnetic material, to be inserted and coupled in the axial cavity of a stator of an electric motor, and adapted to accommodate inside it a rotor of an electric motor.

A turning device (30) includes an electric motor (41), a moving gear (53) configured to move between a first position (P1) at which rotation of an output shaft (43) of the electric motor (41) is able to be transmitted to a rotor (11) and a second position (P2) at which rotation of the output shaft (43) is unable to be transmitted to the rotor (11), a movement mechanism (60) configured to move the moving gear (53) between the first position (P1) and the second position (P2), a torque detection unit (44) configured to detect a torque of the output shaft (43) of the electric motor (41), and a control device (61) configured to control the movement mechanism (60) to move the moving gear (53) from the first position (P1) to the second position (P2) based on the torque detected by the torque detection unit (44).