A rotating electrical machine includes a rotor and a magnet unit. The rotating electrical machine also includes a cylindrical stator and a housing. The stator is equipped with a stator winding made up of a plurality of phase windings. The stator is arranged coaxially with the rotor and faces the rotor. The housing has the rotor and the stator disposed therein. The rotor includes a cylindrical magnet retainer to which the magnet unit is secured and an intermediate portion which connects between a rotating shaft of the rotor and the magnet retainer and extends in a radial direction of the rotating shaft. A first region located radially inside an inner peripheral surface of a magnetic circuit component made up of the stator and the rotor is greater in volume than a second region between the inner peripheral surface of the magnetic circuit component and the housing in the radial direction.

In a rotating electrical machine, a magnet unit and an armature core member are configured to satisfy the following relation Br×Ma≤Bsc×Wsc. In the relation, Br represents a remanent flux density of the magnet unit, Ma represents a distance of a farther circumferential surface of each of first magnets in the circumferential direction, Bsc represents a saturation magnetic flux density of the armature core member, and Wsc represents a thickness of the armature core member in a radial direction thereof.

An induction generator having alternating layers of: (a) at least one rotating magnetic disk assembly with at least one magnet in each such disk; and (b) at least one stationary induction disk (a/k/a conductor disk assembly) with at least one conductive loop (i.e., at least one conductor) in each such conductor disk assembly. In one embodiment, the conductor has the shape of a compressed helicoid.

The present disclosure relates to a brushless DC electric motor, such as for an actuator unit of an implant, as for a cardiac assist system, with a stator with a hollow-cylindrical iron-free winding and a rotor which can rotate relative to the stator. A shaft has a number p of pairs of permanent-magnetic poles, and the winding has a number n of three-phase systems separate from one another. The number of n three-phase systems separate from one another, is varied based on a number p of pairs of permanent-magnetic poles, and the systems are arranged in a manner spatially offset from one another by an angle of 360°/n.

The present disclosure relates to a brushless DC electric motor, such as for an actuator unit of an implant, as for a cardiac assist system, with a stator with a hollow-cylindrical iron-free winding and a rotor which can rotate relative to the stator. A shaft has a number p of pairs of permanent-magnetic poles, and the winding has a number n of three-phase systems separate from one another. The number of n three-phase systems separate from one another, is varied based on a number p of pairs of permanent-magnetic poles, and the systems are arranged in a manner spatially offset from one another by an angle of 360°/n.

A generator comprising at least one annular stator, the annular stator comprising: an annular plate having an inner circumference and an outer circumference with a series of hollow bosses projecting from a first planar surface of the plate and arranged within and around the outer circumference; and a plurality of coils each located so that a portion is around an associated boss; wherein each hollow boss has an associated recess in a second planar surface of the plate; wherein the generator is constructed and arranged such that the recesses of the hollow bosses are receptive to the induction and passage of cooling fluid in and around the recess.

The invention relates to an actuator device for use in a positioning system, wherein the actuator device is linearly movable within a plane with respect to a supporting structure of the positioning system as well as such a positioning system implementing such an actuator device.

In an example of the actuator device according to the invention, it comprises a carrier having a longitudinal and a transversal dimension; and multiple groups of coil assemblies mounted in the carrier, each group of coil assemblies being structured to orientate the carrier in at least one degree of freedom.

The single design actuator device according to the invention has limited constructional dimensions and allows high accuracy as to motion and position in multiple degrees of freedom.

An example system includes a dynamo-electric machine. The dynamo-electric machine includes a rotor that is cylindrical and that is configured for rotation and a stator that is arranged relative to the rotor. The stator has a stepped configuration that defines a first diameter for the stator and a second diameter for the stator. The first diameter is greater than the second diameter. Zones of the stator at the first diameter hold direct-axis (D-axis) windings and zones of the stator at the second diameter hold quadrature axis (Q-axis) windings. An airgap between the rotor and the Q-axis windings is greater than an airgap between the rotor and the D-axis windings.

There is provided an intravascular blood pump for insertion into a patient's heart. The blood pump comprises a slotless permanent magnet motor contained within a housing, the motor having p magnet pole pairs and n phases, where p is an integer greater than zero, and n is an integer ≥3. The motor comprises a stator extending along a longitudinal axis of the housing and having 2np coils wound to form two coils per phase per magnet pole pair. The stator comprises inner and outer windings each comprising np coils electrically connected such that the current flowing through the coils is in the same direction, the coils of the outer winding arranged on an outer surface of the coils of the inner winding.

A stator pole for a stator of a transverse flux machine is provided. The stator includes a stator winding arranged in a winding space, and the winding space being formed circumferentially in a circumferential direction in relation to an axis of rotation of a rotor. The stator pole has a body element made of a ferromagnetic material, which has at least one pole head which, in the installation position, may be arranged opposite the one rotor, and a magnetic return path region, which may be arranged facing away from the one rotor, wherein a number of the pole heads of the stator pole correspond to a number of the rotors. The stator pole is configured to occupy only a portion of a circumference of the winding space in the circumferential direction, and the magnetic return path region has a curved shape which adjoins the at least one pole head, as a result of which the magnetic return path region is designed to define the winding space in part transversely to the circumferential direction.