An electric motor, in particular for an electromechanical brake device of a vehicle, includes a stator and a multi-pole rotor with an odd number of rotor poles. Recesses are defined in the central region of the rotor poles, drive assembly, and electromechanical brake device for a vehicle.

An electric motor, in particular for an electromechanical brake device of a vehicle, includes a stator and a multi-pole rotor with an odd number of rotor poles. Recesses are defined in the central region of the rotor poles, drive assembly, and electromechanical brake device for a vehicle.

Aspects of the disclosure relate to electrically driven power end apparatus and methods, and associated components thereof. In one implementation, a power end for a pump includes a crankshaft coupled to a plurality of actuation rods, and a motor. The motor includes a rotor coupled to the crankshaft. The rotor includes a plurality of electrical coils wound at least partially around the rotor. The motor includes a stator disposed radially outside the rotor, and the stator includes one or more magnets. The plurality of electrical coils apply a magnetic force to the rotor to turn the crankshaft when the plurality of electrical coils are powered.

A rotor for a rotating electric machine is described. Embodiments of the apparatus may include a rotor core comprising a plurality of slots, the rotor core comprising a circumference, a first winding comprising a first termination end exiting the rotor core at a first of the plurality of slots, a second winding comprising a second termination end exiting the rotor core at a second of the plurality of slots, wherein the second of the plurality of slots is 120 degrees around the circumference of the rotor core relative to the first of the plurality of slots, and a third winding comprising a third termination end exiting the rotor core at a third of the plurality of slots, wherein the third of the plurality of slots is 240 degrees around the circumference of the rotor core relative to the first of the plurality of slots.

In a rotating electrical machine, conductive portions of multiphase armature windings are arranged in a circumferential direction. Each of the conductor portions has a selected value of a radial thickness at which a product of a transverse sectional area of the corresponding one of the conductor portions and a value of an interlinkage magnetic flux of a magnet unit to the corresponding one of the conductor portions at a selected operating point of the magnet unit has a maximum value or a value adjacent to the maximum value. The selected operating point of the magnet unit corresponds to the selected value of the radial thickness of each of the conductor portions.

In a rotating electrical machine, conductive portions of multiphase armature windings are arranged in a circumferential direction. Each of the conductor portions has a selected value of a radial thickness at which a product of a transverse sectional area of the corresponding one of the conductor portions and a value of an interlinkage magnetic flux of a magnet unit to the corresponding one of the conductor portions at a selected operating point of the magnet unit has a maximum value or a value adjacent to the maximum value. The selected operating point of the magnet unit corresponds to the selected value of the radial thickness of each of the conductor portions.

Aspects of the disclosure relate to electrically driven power end apparatus and methods, and associated components thereof. In one implementation, a power end for a pump includes a crankshaft coupled to a plurality of actuation rods, and a motor. The motor includes a rotor coupled to the crankshaft. The rotor includes a plurality of electrical coils wound at least partially around the rotor. The motor includes a stator disposed radially outside the rotor, and the stator includes one or more magnets. The plurality of electrical coils apply a magnetic force to the rotor to turn the crankshaft when the plurality of electrical coils are powered.

An reverse electric power generator includes a longitudinal stator and a longitudinal rotor, in which the rotor surrounds the stator in an axial direction such that the rotor rotates relative to the axis for inducing an electrical current in the stator.

An reverse electric power generator includes a longitudinal stator and a longitudinal rotor, in which the rotor surrounds the stator in an axial direction such that the rotor rotates relative to the axis for inducing an electrical current in the stator.

A linear electric actuator system, preferably for patient lifters, comprising at least one linear electric actuator and a controller having a power limiting circuit for limiting the power to the at least one linear electric actuator. The actuator system is arranged such that the threshold value of the maximum permissible power in the power limiting circuit may be changed, and that this change may be performed via reference to the position of the spindle nut on the spindle as a look up in a table showing a corresponding value for the power limit.