Abstract:
A multi-motor drive unit includes a rear cover and a plurality of motors disposed around a center longitudinal axis along a radial plane. A rear end of the plurality of motors is secured to the rear cover and each of the plurality of motors includes a pinion. The multi-motor drive unit includes a master gear including peripheral teeth that engage the pinion of each of the plurality of motors, a motor adapter disposed between the master gear and the plurality of motors to pilot and support the master gear and a front end of the plurality of motors, an output shaft, and a front cover to pilot and support an output bearing of the output shaft.
Abstract:
An electric motor, more particularly a permanent magnet-excited synchronous motor, is disclosed. In order to draw sufficient energy from a stator winding of a stator of the electric motor and also in order to be able to detect reliable measurement data from a rotor of the electric motor, it is proposed for the energy-harvesting device and the measuring device to be provided on the rotor, wherein the energy-harvesting device has at least one electrode for drawing electrical energy from an electrical field that forms as a counter electrode between this electrode and an end turn, which electrode extends in a circumference direction of the rotor and is positioned next to an end surface of the rotor.
Abstract:
A dual motor actuator according to an embodiment includes a main motor actuator outputting torque to a main output shaft by including a main motor and a main reduction gear, an auxiliary motor actuator outputting torque to an auxiliary output shaft by including an auxiliary motor and an auxiliary reduction gear, and a clutch connecting the main output shaft and the auxiliary output shaft to each other, wherein the clutch includes a fixed clutch connected to the main output shaft and a movable clutch coupled to or released from the fixed clutch and connected to the auxiliary output shaft, and the dual motor actuator further includes an output unit connected to the movable clutch and transmitting an output from the main motor actuator or the auxiliary motor actuator.
Abstract:
A base of a case has an inner groove portion, which surrounds a circuit board, and an outer groove portion. A first projected portion of a connector is inserted in the inner groove portion via a first seal portion. A second projected portion of the connector is inserted in the outer groove portion via a second seal portion. The first seal portion and the second seal portion are formed of the same material and are interposed between a periphery of an opening of the case and the connector. The first seal portion in the inner groove portion is in contact with the first projected portion of the connector to water tightly seal an accommodation space formed in the case. The second seal portion in the outer groove portion is in contact with the second projected portion of the connector to restrict vibration of the connector.
Abstract:
A system of providing a mechanical soft start of a load driven by an electrical motor is provided. The system includes, in addition to the rotor driven by the electric motor during normal operation, a drive belt coupled to both the electric motor and the rotor for communicating mechanical power from the electric motor to the rotor. The system further includes a secondary motor, and a primary roller coupled to the secondary motor, wherein the roller is selectively engaged with the drive belt during a mechanical soft-start to communicate mechanical power from the secondary motor to the rotor without requiring mechanical power from primary motor.
Abstract:
An electrical machine system includes a stator having a conical stator surface defining a rotary axis. A rotor is operatively connected to the stator for rotation relative thereto, wherein the rotor includes a conical rotor surface. A conical gap is defined between the conical surfaces of the stator and rotor about the rotary axis. An actuator is operatively connected to at least one of the stator and rotor for relative linear motion along the rotary axis of the stator and rotor to change the conical gap, wherein the actuator provides relative linear motion between a first position for a first conical gap width and a second position for a second conical gap width different form the first conical gap width. In both the first and second positions the full axial length of one of the rotor or stator is axially within the axial length of the other.
Abstract:
A ram air turbine having a turbine with one or more blades, a strut having a drive section and a generator adapter section, a turbine shaft and bevel gear located within the drive section, a generator positioned within the generator adapter section of the strut and comprising an exciter and permanent magnet generator in the a turbine side, and a driveshaft having a pinion gear that engages with the bevel gear, wherein the driveshaft is removably coupled to the generator. The strut includes a cone positioned between the drive section and the generator adapter section, and the permanent magnet generator and the exciter are positioned inside of the cone of the strut. The generator utilizes a generator cover and a generator bearing, and the bearing engages with the driveshaft and the generator. The permanent magnet generator and the exciter are positioned within the cone of the generator cover.
Abstract:
An electric machine having a rectifier assembly placed within a rotating shaft of the electric machine to convert the AC output of the electric machine to the DC input prior to transmission of the electricity from the electric machine.
Abstract:
A rotor system for a downhole motor comprises at least one permanent magnet rotor section, and at least one squirrel cage rotor section. The permanent magnet rotor section and the squirrel cage rotor section are joined in series by a connection. Ideally, the connection comprises a male self lock taper on one rotor, and a corresponding female self lock taper on the other rotor.
Abstract:
An electrical power generation system includes a flux switching machine (FSM) including an FSM rotor operatively connected to an FSM stator, the FSM rotor operatively connected to a shaft, wherein the FSM includes an electrical input/output (i/o) in electrical communication with the FSM stator, and a permanent magnet machine (PMM) including a PMM rotor operatively connected to a PMM stator, the PMM rotor operatively connected to a the shaft, wherein the PMM is electrically connected to the FSM.