A stator for a motor includes laminations arranged axially adjacently. A first lamination includes sub-yoke parts and tooth parts. The sub-yoke parts are spliced through a first yoke engaging part to form an annular first yoke part. The first tooth parts are assembled on an inner edge of the first yoke part through a first tooth engaging part. The second lamination includes sub-yoke parts and tooth parts. The sub-yoke parts are spliced through a second yoke engaging part to form an annular second yoke part. The second tooth parts are assembled on an inner edge of the second yoke part through a second tooth engaging part. The first and second tooth engaging parts are superposed in the axial direction. A method of manufacturing a stator for a motor is also described.

A motor includes a plurality of stator modules, a plurality of circuit boards, a rotor, and a sensing module coupled to the circuit boards. The stator modules are detachably assembled into a stator assembly. Each stator module includes pole posts and coils of different phases wound around the pole posts. Each circuit board is electrically connected to the coils of an associated stator module. Each circuit board independently switches the associated stator module between the different phases. A power source supplies power to the coils via the circuit boards. The rotor includes at least one magnetic member which has magnetic poles corresponding to the coils of the stator modules. The sensing module detects a magnetic field change of the at least one magnetic member responsive to a movement of the rotor, determines a rotational position of the rotor, and informs each circuit board about the rotational position of the rotor.

A stator (2) for a rotary electric machine (1), comprising:—a radially interior ring (25) comprising teeth (23) and slots (21) opening radially towards the outside and extending between the teeth, bridges of material (27) connecting two adjacent teeth to their base and defining the bottoms of the slots between these teeth,—coils (22) arranged in the slots, having electrical conductors arranged in an ordered fashion in the slots (21), and—a radially outer yoke (29) attached in contact with the ring, the yoke being formed of assembled sectors (30).

An electric motor includes a rotor and a stator formed by a plurality of stator phases. The stator phases include coils that extend fully about the motor axis of the motor. The stator phases further include teeth arrayed around the motor axis. Each tooth has a tooth face oriented towards the rotor. Multiple of the lamina forming each tooth are exposed at the tooth face and are configured to extend axially and radially to the tooth face. The stator phases magnetically interact with the rotor to drive rotation of the rotor on the motor axis.

A rotor assembly (10) has a rotor support hub (12) which includes a plurality of first connection parts arranged about a periphery the rotor support hub. The rotor assembly further has a plurality of rotor segments (14) each having a second connection part. Each of the second connection parts are cooperable with at least one of the plurality of first connection parts to connect each of the rotor segments about the periphery the rotor support hub. A plurality of fixing parts (26) are each configured to be received between cooperating first and second connection parts and to form an inference fit therebetween so as to secure the rotor segments to the rotor support hub. The rotor support hub may comprise a plurality of laminations.

A stator cooling assembly for a linear motor includes a stator and a modular cooling arrangement. The modular cooling arrangement comprises: a U-shaped fluid cooling pipe having first and second linear segments extending along first and second opposite longitudinal sides of the stator; an inlet and outlet port connected to a free end of the first and second linear segments, respectively, for circulating a cooling fluid; a central cooling arrangement comprising primary cooling units mounted into recesses of the stator; and connecting members connecting the central cooling arrangement to the fluid cooling pipe. Each primary cooling unit comprises a heat pipe having first and second portions extending along a recess of the stator and along a portion of the fluid cooling pipe, respectively. The connecting members connect the second portion of the heat pipe of each primary cooling unit to corresponding portions of the fluid cooling pipe.

Methods, systems, and devices are disclosed for wind power generation. In one aspect, a wind power generator includes a support base; inductors positioned over the support base in a circular array; an annulus ring track fixed to the base support and providing a circular track around which the inductors are located; an annulus ring rotor placed on the annulus ring track and engaged to rollers in the circular track so that the annulus ring rotor can rotate relative to the an annulus ring track, in which the annulus ring rotor include separate magnets to move through the circular array of inductors to cause generation of electric currents; and a wind rotor assembly coupled to the annulus ring rotor and including wind-deflecting blades that rotate with the rotor and a hollow central interior for containing a wind vortex formed from deflecting wind by the blades to convert into the electric energy.

A motor includes a rotation shaft, a rotor, and a stator. The rotor includes a rotor core and magnetic pole portions respectively including permanent magnets embedded in the rotor core. The magnetic pole portions have polarities that differ alternately in a circumferential direction. A projection projecting radially outward from an outer circumferential portion of the rotor core is arranged between the magnetic pole portions having different polarities. In a radial opposing relationship of the rotor core and the teeth taken at different times while the rotor is revolved once, at a certain time, a quantity of the teeth that oppose one of the magnetic pole portions and do not oppose the projection is greater than a quantity of the teeth that simultaneously oppose two of the magnetic pole portions adjacent to each other in the circumferential direction and the projection located in between the magnetic pole portions.

In some embodiments, two or more different types of stator structures may be disposed within a gap of an axial flux machine. Such arrangements may be advantageous, for example, for producing a machine optimized for multiple modes of operation, such as mechanical torque generation, conversion of mechanical torque to electrical power, and/or dissipation of mechanical power. Further, in some embodiments, an axial flux machine may include a planar stator having a winding arranged to be positioned within the machine's active region, and may further include at least one switch configured to be selectively closed to establish an electrical connection between respective ends of the winding at a time that the winding is not coupled to an external power source

A segment sheet for a stator lamination stack of a generator of a wind turbine, wherein the segment sheet has the shape of a ring segment, having a first radial section, in which recesses are provided for receiving a stator winding, having a second radial section, which is arranged radially adjacent to the first section and which forms a segment of a magnetic yoke of the generator, and having a third radial section, which is arranged radially adjacent to the second section. The proposal is that the third radial section has at least two recesses arranged in an azimuthally spaced manner, which are designed for a positive connection to profiled strips arranged on a stator support ring.