A transverse flux motor (10) includes a housing (20), a stator (50), and a rotor (30) external to the stator (50) and installed onto the housing. The stator (50) includes a stator sub-assembly including at least one pair of stator core elements (52), each having multiple stator pole teeth (56) circumferentially offset from pole teeth of the other stator core element in the pair. The rotor (30) includes a rotor body (32) made of a single piece part or multiple rotor body laminas (36). The rotor body (32) includes multiple magnetic flux retention features (40) for positioning first magnets (34). Two adjacent magnetic flux retention features (48) define a second magnet retention feature (47) for positioning a second magnet (45) that form a substantially U-shape together with two neighboring first magnets with the same magnetic poles facing each other.

An external rotor structure used in a motor structure is made of lightweight and low-cost polymer plastic material and provides good heat convection to provide vehicle cooling. The external rotor structure has a ring-shaped yoke iron part, a ring-shaped magnet part and a plastic part. Thus, by using a design of covering the ring-shaped yoke iron part and the ring-shaped magnet part with polymer plastic material by in-mold injection, it achieves the smooth operation and balance of the motor structure. Combined with through holes in the polymer plastic, the heat generated during the operation of the motor structure can be smoothly discharged to the outside, and the temperature difference between the inside and the outside caused by the operation of the motor structure can be balanced by heat convection. In short, the external rotor structure has advantages of lightweight and low cost.

A stator (10) according to the present invention comprises: a yoke part (11) composed of a plurality of block bodies having an arc shape with a rectangular cross section; fixing members (12, 13) for disposing and fixing the plurality of block bodies in an annular shape; a plurality of teeth parts (14) erected on the peripheral surface of the yoke part; and a coil (15) wound around the plurality of teeth parts (14).

A transverse flux machine (TFM) includes a rotor assembly configured to rotate about an axis, and a stator assembly. The stator assembly includes a plurality of stator windings and a plurality of stator cores each configured to direct a magnetic flux in each of an axial direction and a radial direction toward the rotor assembly. Each of the stator cores defines a ring shape and holds a corresponding stator winding of the plurality of stator windings. The plurality of stator cores include an exterior stator core located adjacent to an axial end of the stator assembly, and an interior stator core spaced apart from the axial end of the stator assembly. The interior stator core defines at least one dimension that is different than a corresponding dimension of the exterior stator core.

This disclosure describes a magnetically geared apparatus that is configured either as an electric motor or as a generator. The apparatus includes at least a stator structure and a rotor structure arranged in a manner to improve torque generation. The stator structure contains N1 stator cores and a shared toroidal electrical winding, and the rotor structure contains an equal number of corresponding rotor cores. The apparatus may be a Vernier machine. The apparatus may include one or more thermal channels configured to transport heat out of the stator structure. Methods and systems for manufacturing the apparatus are also described.

A transverse flux motor is formed by a stator portion and a rotor portion. The stator portion includes one or more phase assemblies formed by flux ring plates axially bracketing coil wire windings. The flux rings include teeth that magnetically interact with circumferentially opposed and adjacent teeth to form flux paths transverse to the axis of rotation of the rotor assembly.

A fluid moving apparatus includes an electric motor having a rotor and a stator and a fluid displacement member. The rotor rotates relative to the stator on a common axis to generate a rotational output. The rotational output is provided to the fluid displacement member to power the fluid displacement member to one of move linearly along and rotate about the common axis. The stator includes one or more coils configured to power rotation of the rotor. The one or more coils extend circumferentially around and can be coaxial on the common axis.

A technique capable of implementing a more appropriate layout of a lead wire extending from a coil wire of a stator in a claw pole-type rotary electrical device is provided. A claw pole motor 1 according to an embodiment of the present disclosure includes a rotor 10 freely rotatable about a rotation axis AX; a stator 20 including a coil 212 wound around in an annular state and a stator core 210 of a claw pole-type provided so as to surround a periphery of the coil 212; and a lead wire LL extending from the coil 212, wherein the stator core 210 includes a through-hole 210D provided centered around the rotation axis and penetrating in an axial direction and a through-hole 210E, in which the lead wire LL is arranged, penetrating in the axial direction.

A transverse flux motor is formed by a stator portion and a rotor portion. The stator portion includes one or more phase assemblies formed by flux ring plates axially bracketing coil wire windings. The flux rings include teeth that magnetically interact with circumferentially opposed and adjacent teeth to form flux paths transverse to the axis of rotation of the rotor assembly.

An electromagnetic transducer, including a plurality of static flux paths, and a plurality of dynamic flux paths, wherein at least two of the plurality of static flux paths lie in respective first planes parallel and offset from one another, at least two of the plurality of dynamic flux paths lie in respective second planes parallel and offset from one another, and the first planes and the second planes are arrayed so as to establish at least a general tic-tac-toe lattice.