Abstract: A stator for an electric machine includes: a laminated stator core including stator grooves and having a plug-in side and a bending side, which bending side lies opposite the plug-in side in an axial direction; a stator winding having hairpin elements which are pushed into the stator grooves on the plug-in side of the laminated stator core and bent and electrically connected to the stator winding on the bending side of the laminated stator core; and an end plate which is arranged on the plug-in side in the axial direction between the laminated stator core and the hairpin elements. The hairpin elements are arranged in the axial direction so as to bear against the end plate.

Abstract: A vehicle electric machine includes a stator core having an inner diameter defining a plurality of slots, an outer diameter, and a plurality of mounting ears disposed radially outboard of the outer diameter. At least one of the mounting ears defines a cooling channel extending in an axial direction of the stator core. A radial distance between a center of the stator core and the cooling channel is greater than a radial distance between the center and the outer diameter. The machine further includes windings having portions disposed in the slots and end windings adjacent to an end face of the stator core.

Abstract: One aspect of a rotor of the present invention includes: a rotor core rotatable about a central axis; and a rotor magnet fixed to an outer peripheral surface of the rotor core. The rotor magnet has a plurality of magnetized portions arranged along a circumferential direction in a Halbach array. The plurality of magnetized portions include a plurality of radially magnetized portions whose magnetization direction is a radial direction and a plurality of non-radially magnetized portions whose magnetization direction is different from the radial direction. The rotor core is a non-magnetic member that has a hole, recessed from a surface on one side in an axial direction of the rotor core to the other side in the axial direction and is made of a non-magnetic material. The hole is located on the radially inner side of the radially magnetized portion.

Abstract: Provided is an electric generator including a stator including: a stator yoke a plurality of teeth, a plurality of slots extending radially from the stator yoke to respective radial slot ends, the plurality of slots being circumferentially interposed between the teeth of the stator, each slot including a bottom portion adjacent to the stator yoke and a top portion adjacent to the respective radial slot end. The stator further includes a plurality of coils housed in the plurality of slots, each slot housing at least one coil in the bottom portion and at least another coil in the top portion, each coil housed in the bottom portion of a first slot of the plurality of slots being connected to another respective coil housed in the top portion of a second slot of the plurality of slots.

Abstract: A flux machine has plural coil assemblies and plural magnet sets arranged in mutual close proximity and circularly about a central axis. Either one of the coil assemblies and the magnet sets are supported by at least one axle which is aligned with the central axis, and either one of the coil assemblies and magnet sets executes rotary motion about the central axis when electrical current is present in the coil assemblies. Magnetic flux of the magnet sets is directed axially and radially while machine rotation is orthogonal to the direction of flux. A plurality of magnets in each magnet set are supported by one or another of a plurality of coaxially aligned axles so that the flux machine may operate as an electrical motor, as an electrical generator, or both at the same time.

Abstract: A coil support for preformed flat coils of a stator of an electric rotary motor includes an annular supporting structure and a plurality of columns extending upwardly from the supporting structure. The columns are spaced apart from each other to form a corresponding plurality of coil receiving portions configured to hold the preformed flat coils in place before a potting operation. Each of the coil receiving portions is configured to support a lower part of one of the preformed flat coils.

Abstract: A core that is used in an axial-gap rotary electric machine and that includes a body, and frame-shaped flange portions. The body includes an annular yoke and columnar teeth that are arranged in a circumferential direction of the yoke. The flange portions are fixed to end portions of the respective teeth. The yoke and the teeth are composed of a single powder compact. Each of the flange portions is composed of a powder compact that has a through-hole. The end portion of each of the teeth is inserted in the through-hole, and an end surface of each of the teeth is exposed from the through-hole. A ratio of an area of the end surface of each of the teeth to an area within an outer circumferential edge of each of the flange portions is 7.5% or more in a plan view in an axial direction of the yoke.

Abstract: A stator of an electric motor includes a stator core including a rim and a plurality of stator teeth extending from the rim. The plurality of stator teeth define a plurality of tooth gaps between circumferentially adjacent stator teeth. A plurality of stator windings are wrapped along the plurality of stator teeth. The plurality of stator windings include a plurality of core segments extending along the plurality of tooth gaps, and a plurality of end turn segments connecting adjacent core segments. A plurality of non-electrically conductive cooling channels are located in the stator core. The plurality of cooling channels are configured to direct a cooling fluid flow therethrough to cool the plurality of stator windings.

Abstract: A hermetic compressor includes an electric motor that includes a rotor having a plurality of permanent magnets inserted into a rotor core, a connection part made of a non-magnetic material and provided at an axial end portion of the rotor core, and an inertial core made of a magnetic material and provided at an axial end of the connection part. The connection part includes a plurality of first fixing portions, a plurality of second fixing portions spaced apart from the plurality of first fixing portions in an axial direction, and a plurality of link portions disposed between the plurality of first fixing portions and the plurality of second fixing portions.

Abstract: A kinetic power generation unit improves the magnetic field of an electric motor and the magnetic field of a power generator into a same magnetic field coupling of a same rotor, so that the rotors of electric motor and the power generator have the same rotational direction, and an exciting winding of the electric motor changes and transmits phases sequentially to a phase voltage by a brushless drive controller, so that an interference effect on the counter electromotive force of the electric motor and the counter-electromotive force of the power generator is changed to a positive effect.

Abstract: A motor includes a rotor magnet, a stator, and a magnetic sensor. The rotor magnet includes magnetized portions in a Halbach array, and having radially magnetized portions whose magnetization direction is a radial direction and non-radially magnetized portions. In first and second radially magnetized portions, magnetic poles on both sides in the radial direction are arranged opposite to magnetic poles on both sides in the radial direction of the first radially magnetized portion. The first and second radially magnetized portions are alternately arranged along a circumferential direction with at least one non-radially magnetized portion therebetween. The magnetic sensor is located on the other side in the radial direction with respect to the rotor magnet. A non-magnetized portion is in an axial portion of the rotor magnet where a magnetic field is detected by the magnetic sensor, and located between the first and second radially magnetized portions in the circumferential direction.

Abstract: The present invention may provide a motor including a rotor and a stator disposed to correspond to the rotor, wherein the rotor includes a rotor core and a magnet disposed on the rotor core, a tooth of the stator includes a first surface facing the magnet, the magnet includes a second surface in contact with the rotor core and a third surface which is spaced apart from the second surface and faces the first surface, the third surface includes a flat surface, and a first length which is a shortest distance of the flat surface is in the range of 46% to 50% of a second length of a shortest distance of the first surface.

Abstract: A rotor for a rotary electric machine and having: a plurality of permanent magnets, which are axially oriented and are arranged beside one another around a rotations axis so as to form a closed ring; a support cylinder, which has an outer surface, on which the permanent magnets rest, and a central cavity; and two half-shafts, which are independent of and separate from one another and are singularly inserted in opposite ends of the central cavity of the support cylinder so as to form one single block with the support cylinder. The permanent magnets are circumferentially arranged one following the other according to a Halbach array so as to nullify the magnetic field radially on the inside of the permanent magnets and so as to maximize the magnetic field radially on the outside of the permanent magnets.

Abstract: An electric motor comprises: a rotor having poles equaling a first number; and a stator having slots equaling a second number, the stator having stator windings formed by conductors wound in a wave pattern around the stator, wherein a third number of the conductors are located in each of the slots, wherein the conductors form three balanced parallel paths through the slots, each of the conductors in the three balanced parallel paths undergoing a same number of pitch turns, each of the pitch turns being either a standard pitch turn or a nonstandard pitch turn, the standard pitch turn involving wrapping around slots equaling the second number divided by the first number, the nonstandard pitch turn involving wrapping around more or fewer slots than the standard pitch turn, wherein each of the three balanced parallel paths forms a repeating pattern throughout the slots.

Abstract: A stator liquid cooling structure and a stator structure of a stator yokeless disc motor are provided. The cooling structure includes an annular stator bracket and a water jacket. An outer periphery of the stator bracket is in a groove structure and is fixedly connected with the water jacket. Opposite upper and lower ends of the water jacket are provided with a liquid inlet and a liquid outlet. The stator structure includes stator cores, an armature winding, the stator bracket and the water jacket. A first stator core and a second stator core of the stator cores are same in structure and oppositely arranged. The armature winding is wound on first stator tooth bodies and second stator tooth bodies of the stator cores; the first stator tooth bodies and the second stator tooth bodies are inserted into gaps between adjacent blade-shaped cavities and fixed on the stator bracket.

Abstract: The present disclosure relates to rotors for an electrical machine comprising a first type of permanent magnets, and a second type of permanent magnets, wherein the first and the second types of permanent magnets have a same magnetic strength, and wherein the first type of permanent magnets has a first temperature rating, and the second type of permanent magnets has a second temperature rating different from the first temperature rating. The present disclosure relates to generators, and in particular to wind turbines comprising such generators and to methods for selecting or providing magnets for permanent magnet rotors.

Abstract: A motor cover structure sealing a housing of a motor includes a partition wall disposed on one side of a stator disposed within the motor to contact a cover contacting the housing, and a body part mounted with the partition wall, in which an oil recovery line is defined between the partition wall and the body part, and the oil flows to the oil recovery line in a space of one side of a rotor disposed within the motor.

Abstract: An electric machine may include an stator and a rotatable rotor. At least one of the stator or the rotor may include a plurality of multi-part trapezoidal teeth with an electromagnetic coil disposed around each tooth.

Abstract: The invention relates to a non-cogging electric generator having at least one stator and at least one dual rotor, wherein the dual rotor comprises a plurality of primary magnet devices arranged in circular Halbach array. Non-cogging is achieved by having inner and outer rotor rotating synchronously. Concentration of magnetic flux is achieved by magnetic devices tapering into pyramidal shape, such that magnetic devices arranged on the inner rotor are facing magnetic devices on the outer rotor, whereas said magnetic devices are facing each other with the opposite polarity. Stator comprises electrical wire windings and is positioned between inner and outer rotor.

Abstract: A stator includes a stator core and a coil wound around the stator core. The coil includes at least one first winding and at least one second winding connected to the first winding in series. The stator satisfies (C1/S1)>(C2/S2), where S1 is a total cross-sectional area on a first side of a coil-end part of the coil, S2 is a total cross-sectional area on a second side of the coil-end part, C1 is a total cross-sectional area of the first winding on the first side, and C2 is a total cross-sectional area of the first winding on the second side.