A rotor of a wind turbine rotary electric machine has a tubular structure extending and configured to rotate about an axis of rotation; a plurality of active segments parallel to and arranged about the axis of rotation and fitted to the tubular structure; and a plurality of cooling channels formed in the tubular structure.

The motor according to the present invention is characterized by including a stator core having an upper insulator and a lower insulator combined with an upper portion and a lower portion thereof; a housing manufactured by placing the stator core in an insert injection mold, the housing being formed by a resin molding having at least one upper leg integrally formed in the upper portion thereof; a rotor located inside the stator core of the housing and rotating, the rotor being combined with the housing by having a shaft penetrating into a center portion thereof; and at least one lower leg formed as a separate member from the housing so as to be combined with the lower portion of the housing.

A brushless DC motor is provided. The brushless DC motor comprises a motor housing around an axis, a stator assembly inside the motor housing, a carrier plate fixed relative to the stator assembly, and a Hall effect sensor assembly removably coupled to the carrier plate. A method of making a brushless DC motor is also provided comprising fixing a carrier plate relative to a stator assembly of a brushless DC motor assembly, and fixing a first Hall effect sensor array to the carrier plate.

A cooling fan includes a base, a stator and an rotator, one end of the stator is fixed to the base, the other end of the stator forms a shaft, the rotator is mounted to the shaft, an end of the shaft protrudes out of the rotator, each of the rotator and the shaft is <same as claims> an electromagnet driving unit matching each other, the rotator is driven to rotate by the electromagnet driving unit. An electronic device using such a cooling fan is further disclosed.

A wheel of an electrical machine, includes a hub and a rim connected by spokes, the rim being formed by layered sheet metal elements assembled together. Also disclosed is an electrical machine including the wheel.

A brake system, especially for a generator, including a rotor assembly, a stator assembly and a rotation axis is disclosed. The rotor assembly includes an outer portion which is located radially outward of the stator assembly. The outer portion includes a brake disc, and the stator assembly comprises at least one frictional member operatively configured for frictionally engaging at least a portion of the brake disc.

An electric generator that converts mechanical energy to electrical energy includes, among other things, a first axial flow electrical machine that includes a first rotor mounted in rotation about a first axis and surrounding a first stator; a second axial flow electrical machine that includes a second rotor coaxial to the first rotor and surrounding a second stator; and first azimuthal securing means that joins together the first and second rotors so that the first and second rotors can be simultaneously set in rotation about the first axis. The electrical generator may be used as part of a wind turbine.

An object is to release heat efficiently to heat-resistance abilities of individual components by enhancing a heat-radiation performance of power circuit components forming a power module (100) and by enhancing a heat generation balance. The power circuit components formed of power switching elements (107 and 108) forming a bridge circuit and a motor relay switching element (109) are mounted on conductive members (102) while a heat generation balance is maintained. Then, the conductive members (102) are disposed on a heat-releasing heat sink (30) by abutment, and the power circuit components and the heat sink (30) are integrally molded using mold resin (101).

A wind power generator and stator iron core thereof, and stator iron core module; the iron core module (4) has an overall dimension consistent with a principle of the number of slots per pole per phase q=1; the iron core module (4) is provided with two three-phase winding units therein, an electrical angle formed by the two three-phase winding units is 30 degrees. The method of arranging winding in the stator iron core module (4) is changed to effectively reduce fifth and seventh winding harmonic magnetomotive forces.

An electric motor having a rotor core with a rotatable shaft extending therethrough, and a stator positioned radially outward of the rotor core is disclosed herein. The stator can include at least one pair of first and second coils circumferentially positioned on opposing sides of the rotor. Each pair of the first and second coils includes first and second elements electronically isolated from one another. A first frequency converter is electrically connected to a first conductive wire and a second frequency converter is electrically connected to a second conductive wire. The first conductive wire is wound about the first element of the first coil and the first element of the second coil in series and the second conductive wire is wound about the second element of the first coil and the second element of the second coil in series.