A generator-gearbox arrangement for a wind turbine includes a generator having a stator and a rotor interacting with one another, a functional component arranged on an end side of the generator and including an extension which points toward the rotor, and a magnetic rail brake arrangement including component parts fastened to the extension. The magnetic rail brake arrangement is designed to apply a braking action which is based on an operating principle of electromagnetic attraction between the magnetic rail brake arrangement and at least one of the rotor and the functional component.

Described herein is a device comprising members in a kinematic relationship. The kinematic relationship is at least partially governed by at least one magnetic flux interaction that, in effect, may provide a tunable resistance to movement, changing the rate of relative movement between the members. In one embodiment, the device comprises a first member in a kinematic relationship with at least one further member to form a system. The system moves within a limited range of motion and the system interacts when an external energizing force is imposed on the system causing the members to respond due to their kinematic and dynamic characteristics and thereby creating relative motion between the members. The trigger member is coupled to the at least the first member and moves in response to a pre-determined system movement. When the trigger member moves, the trigger member imposes a braking action on the system or a member or members thereof. The speed and/or intensity of the braking action imposed by the trigger member on the system or a member or members thereof is controlled by the trigger member rate of movement. This rate of movement is in turn governed by a magnetic flux interaction between the trigger member and the at least one first member causing formation of a magnetically induced eddy current force between the parts.

A wheel module arranged to generate torque to accelerate and to decelerate a heavy-duty vehicle. The wheel module comprises at least one electric machine arranged for regenerative braking, an eddy current braking device, and an electronic control unit, ECU. The wheel module further comprises a communications port arranged for communication with an external control unit and a power distribution network arranged to connect the electric machine to the eddy current braking device and to a power port arranged to input and to output electrical power to and from the wheel module. The ECU is arranged to obtain configuration data via the communications port indicative of a maximum output power of the power port, and to control the power distribution network to maintain the output power of the power port below the maximum output power by distributing power from the at least one electric machine between the eddy current braking device and the power port.

Electrical windings for a low-pressure environment are provided. The electrical windings include a body having an aperture and electrical conductors wound about the aperture in the body; a conductive layer at the body, the conductive layer arranged to electrically shield the electrical conductors; electrical connectors at one or more external sides of the body, the electrical connectors electrically connected to the electrical conductors; an insulating housing containing electrical connections between the electrical connectors and the electrical conductors; a conducting faceplate at the insulating housing, grounding portions of the electrical connectors attached to the conducting faceplate; and a conductive coating on the insulating housing, the conductive coating electrically connected to the conducting faceplate and the conductive layer.

A double stator permanent magnet machine includes an inner stator having a back iron and a set of inner stator poles connected to the back iron, a rotor having a shaft and a set of segments, each segment having a permanent magnet, adjacent the inner stator and rotatively coupled to the inner stator, an outer stator having a set outer stator poles, adjacent the rotor and rotatively coupled to the rotor, a set of inner windings disposed between each of the inner stator poles, and a set of outer windings disposed between each of the outer stator poles.

Described herein are eddy current brakes and associated methods of their use, particularly configurations that have a kinematic relationship with at least two rotational degrees of freedom used to tune operation of the brake or apparatus in which the brake is located.

An electromagnetic machine for generating force is provided. The electromagnetic machine includes a magnet having opposing sides extending along a longitudinal axis. The electromagnetic machine includes a pair of ferromagnetic bodies respectively extending along the opposing sides of the magnet, and along the longitudinal axis, each of the ferromagnetic bodies comprising: a back-iron portion; and a pole portion extending from the back-iron portion. The magnet and the ferromagnetic bodies include reciprocal retention devices at the opposing sides along the longitudinal axis. The electromagnetic machine includes electrical windings around respective pole portions of the ferromagnetic bodies, the electrical windings around the respective pole portions being independently controllable. The electromagnetic machine includes at least one cold plate configured to thermally isolate the magnet from the electrical windings.

The system includes: a driver; a rotating load configured to be driven into rotation by the driver; a controller, for controllably changing a rotation speed of the load; and a variable speed transmission, arranged between the driver and the load. The variable speed transmission includes a speed summing gear arrangement with a first input shaft, a second input shaft and an output shaft. The output shaft is drivingly coupled to the rotating load. The first input shaft is drivingly coupled to the driver. A continuous variable transmission device is mechanically coupled to the driver and to the second input shaft of the speed summing gear arrangement. The continuous variable transmission device is functionally coupled to the controller.

An eddy current braking system for a wheel of a vehicle, the vehicle including a chassis and the wheel being rotatably mounted to the chassis, the wheel including a wheel rim made of an electrically-conductive material and extending annularly around a wheel cavity, the system comprising: a magnetic field generating member secured to the chassis and disposed annularly within the wheel cavity and proximal to the wheel rim, the magnetizable member being operable for generating a magnetic field towards the wheel rim to generate eddy current within the wheel rim upon rotation of the wheel; and a magnetic field controller operatively connected to the magnetic field generating member for selectively controlling an intensity of the magnetic field applied by the magnetic field generating member on the wheel rim.

A permanent magnet speed governor with fixed magnetic gap, including a barrel-shaped conductor rotor and a permanent magnet rotor therein, wherein the permanent magnet rotor includes a driven shaft and at least one rotatable permanent magnet circumferentially arranged around the driven shaft, the rotatable permanent magnet is cylindrical and has N and S poles in the diameter direction, magnetic conductors are wrapped at the two sides of the rotatable permanent magnet, the two magnetic conductors are separated by a non-magnetic conductor, the rotatable permanent magnet is connected to the driven shaft by the magnetic conductor at one side, and a magnetic circuit regulator is arranged at one end of the rotatable permanent magnet. Since a fixed magnetic gap structure is adopted, the engagement area of the speed governor is increased, and the assembling difficulty is reduced, thereby reducing waste of rare earth materials and increasing torque transmission capability.