A brushless motor includes a stator as an armature where a plurality of coils is housed and a rotor as a magnetic exciter having a permanent magnet, wherein an end portion of the coil housed in a slot of a stator stack is inserted into a wire binding board having a wire binding pattern of the coil, the end portion of the coil is soldered to a land of the wire binding board, and the wire binding board and a circuit board are electrically conducted to each other through an connecting terminal.

A stationary portion of a motor includes resin bodies including an inner resin portion and an outer resin portion. The inner resin portion is between a tooth and a coil and between the tooth and an insulator. The outer resin portion covers circumferentially outer sides and axially outer sides of the coil. The inner and outer resin portions are continuous with each other through a connecting resin portion. The insulator includes an opening portion extending along circumferential side surfaces of the tooth. The inner resin portion is in contact with the circumferential side surfaces of the tooth and a conducting wire in the opening portion. Heat generated in the coil is transferred to the tooth through the resin body. A path along which the heat is transferred from the coil to the tooth is secured, and dissipation of heat out of the motor is promoted.

A multi-shaft linear motor formed by a plurality of linear motors each provided with a magnetic body and an armature and adapted to produce a force causing the magnetic body and the armature to be relatively displaced along a given linear moving direction by interaction of magnetic fluxes generated between the magnetic body and the armature during an operation of supplying electric power to the armature. Each of the single-shaft linear motors includes a base plate. Base plate has a base surface defining the moving direction, wherein the stator is fixed onto the base surface along the moving direction, and the mover is attached onto the base surface in a movable manner reciprocating along the moving direction and in opposed relation to the stator. Single-shaft linear motors are stacked in a stacking direction perpendicular to the base surface such that the single-shaft linear motors are individually detachable as a unit.

A stator-rotor device for an electrical machine, in particular an electric motor, includes a stator and a rotor, wherein the stator-rotor device pole cores provided with windings comprise pole shoes and magnets associated therewith. The pole shoes are connected via a first surface to a respective pole core and have a second surface that is facing towards the magnets. The pole shoes cooperate magnetically with the magnets and are separated from the latter by an air gap. The pole shoes and the magnets engage with one another in an engagement direction in such a way that in each case a section of the other componentmagnet or pole shoesis arranged lying opposite the respectively engaging componentpole shoe or magnettransverse to the engagement direction on two sides facing away from one another. The second surface is larger than the first surface.

A rotor assembly for an electromechanical transducer is provided. The rotor assembly comprises a mechanical support structure and a magnet arrangement having a first magnetic component part and a second magnetic component part. The first magnetic component part and the second magnetic component part are attached to the mechanical support structure and are arranged along an axial direction (Z) of the rotor assembly. With respect to the axial direction a first cross section of the first magnetic component part has a first shape and a second cross section of the second magnetic component part has a second shape being different from the first shape. It is further described an electromechanical transducer and a wind turbine, which are both equipped with such a rotor assembly.

Apparatus (2) for generating electricity from a tidal water flow, which apparatus comprises: a plurality of electrical generators (4) for generating electricity; and connection means for electrically connecting the electrical generators (4) together; wherein each electrical generator (4) comprises a rotor (6), a stator (8), and a housing (10); the housing (10) is a multi-sided housing constructed such that the electrical generators (4) are stably connectable together; the housing (10) is open at both ends; the stator (8) is inside at least a part of the housing (10); the rotor (6) comprises a plurality of magnets (18) positioned around the periphery of the rotor (6); the magnets (18) are encased in a protective material (20) which protects the magnets (18) from the water; and the rotor (6) has vanes (22) which cause the rotor (6) to rotate within the stator (8) as the water flows through the housing (10).

An apparatus and method for the installation and removal of permanent magnets in a permanent magnet electromechanical machine, for example a wind turbine power unit generator. A magnet holder is mounted on a magnet carrying structure such as a rotor. Permanent magnets may be inserted into and removed from the magnet holder after the electromechanical machine is assembled. The magnet holders define passages for airflow between the inside top and magnet surface. In this manner, permanent magnets may be installed on the magnet carrying structure and provided with additional cooling via said passages. Further, the holders may be configured to secure the magnets by an interference fit, without using bolts or adhesives, to facilitate both assembly and removal for maintenance and repair.

An electrical machine comprising: at least one stator, at least one module, the at least one module comprising at least one electromagnetic coil and at least one switch, the at least one module being attached to the at least one stator; at least one rotor with a plurality of magnets attached to the at least one rotor, an integrated electrical differential coupled to at least one of the rotors, the at least one integrated electrical differential permitting the at least one rotor to output at least two rotational outputs to corresponding shafts, wherein the at least two rotational outputs are able to move the shafts at different rotational velocities to one another. The electrical machine is configured to fit into a housing, and that can be retrofitted into a conventional vehicle by replacing the mechanical differential.

The invention is the compact multiphase wave winding of a high specific torque electric machine The invention is the compact multiphase wave winding (6) of the electric machine. Winding (6) is filling the slots (5) of the stator ferromagnetic core (3) and comprise one or multiple layers (40). Winding (6) fills the slots (5). Winding comprise N or a multiple on N conductors (8), where N represents the number of winding phases. Conductor (8) comprises or is assembled by parallel straight segments (10) and winding overhangs (11). Between the two straight segments (10) of one conductor (8) there are N teeth (4) and N1 slots (5) or N+1 teeth (4) and N slots (5). Straight segments are connected by winding overhangs which shape in tangential axial plane differs for less than one sixth of magnetic period (7) from ellipse shape with one axis equal to half of magnetic period (7) and other axis length between half and three quarters of magnetic period (7) length.

An armature assembly apparatus for assembling an armature of an electrical machine is provided. The armature assembly apparatus has an armature holding apparatus to hold a partially assembled armature such that a rotation axis of the armature is horizontal. The armature assembly apparatus has a rotating device for rotating the partially assembled armature about a rotation axis. The armature assembly apparatus also has a ring segment conveyance for conveying an armature ring segment to a mounting position relative to a free ring segment portion of the partially assembled armature.