Abstract: An electric machine rotor including a rotor core having a plurality of magnets and several pairs of elongated slots circumferentially distributed on the rotor core. Each pair of elongated slots jointly forms a V-shaped configuration with an opening facing an outer periphery of the rotor core. Each elongated slot includes a mounting portion that matches the shape of the magnet and an end hole located at an end of the elongated slot pointing to the outer periphery. The end hole includes a main body area and a lobe area, and the lobe area extends from the main body area toward outside of the V-shaped configuration until it is partially located outside a side extension line of the mounting portion.

Abstract: Ceiling fans suspended from a structure have a motor to drive blades for moving a volume of air about an area. The motor, with a rotor and stator, can be electrically coupled to the structure. Blades mount to the rotor such that the blades are rotatably driven by the motor. A motor case can mount to the rotor and encase the stator.

Abstract: A horizontal shaft electric powerhead includes an electric motor, a battery, a housing, and a base plate. The electric motor includes a horizontal output shaft configured to rotate about a horizontal axis of rotation and has a power rating of 2,500 or fewer watts. The battery includes a plurality of lithium-ion battery cells and is coupled to the electric motor. The housing has a standard cross-sectional footprint so that the electric powerhead has substantially the same volume as a comparable small internal combustion engine. The base plate is configured to be fastened to a mounting surface and includes a plurality of openings arranged in a standard horizontal shaft engine support pattern.

Abstract: A rotor includes at least one first permanent magnet and at least one second permanent magnet. The at least one first permanent magnet forms part of an outer peripheral surface of the rotor and is magnetized to have polar anisotropy. The at least one second permanent magnet is adjacent to the at least one first permanent magnet in a circumferential direction of the rotor and has lower magnetic force than magnetic force of the at least one first permanent magnet.

Abstract: A tissue resecting device includes a handpiece assembly and an end effector assembly. The handpiece assembly includes a motor and a cooling assembly. The cooling assembly includes a housing, a fan assembly, and a fin pack. The fan assembly includes a tubular member configured to be received in the elongate cover, and a plurality of blades rotatably supported on the tubular member and operatively coupled with a drive rotor of the motor for concomitant rotation therewith. The fin pack includes a tubular base and a plurality of fins extending radially outward from the tubular base. The tubular base is disposed within the elongate cover and about the tubular member of the fan assembly. Actuation of the motor rotates the plurality of blades of the fan assembly to thereby advance air through a space between the fin pack and the elongate cover of the housing to facilitate cooling of the motor.

Abstract: First and second sets of magnet assemblies and magnetic assemblies are alternately arranged in a circumferential direction in a first portion along an axial direction, and the first and second sets are alternately arranged in the circumferential direction in a second portion along the axial direction. When viewed in the axial direction, the first set of the first portion and the second set of the second portion overlap with each other, and the second set of the first portion and the first set of the second portion overlap with each other.

Abstract: The invention relates mainly to a rotary electric machine for a motor vehicle. The machine (10) comprises a shaft (13); a rotor (12); a stator (16) comprising a body (25) provided with slots, and a winding (26) inserted into the slots; a first bearing (37) and a second bearing (38) surrounding an assembly formed by the rotor and the stator and each comprising a housing (40, 44) for rotatably mounting the rotor shaft (13). The first bearing comprises a transverse flange (371) and a cylindrical wall (372) of axial orientation derived from an outer periphery of said flange. The second bearing comprises a transverse flange (48) closing the first bearing and at least one rim (63) projecting from the flange and forming a junction area (64) where it joins the first bearing. Furthermore, the stator body has a region (Z1) of shrink-fitting to the cylindrical wall.

Abstract: A stator comprises: a stator core placed in a circular ring shape around a central axis that extends vertically, onto which coil wires are wound; a first support member placed over the stator core; and a second support member placed over the first support member, the first support member having receiving grooves for guiding the coil wires coming out of the stator core, wherein the receiving grooves are grooves that open to the top and extend in a direction along the top surface of the first support member, the second support member having through-holes that axially support the coil wires, wherein the second support member at least partially overlaps the receiving grooves of the first support member in an axial view.

Abstract: A method of manufacturing a winding assembly for an electrical machine, the method comprising: selecting (S1) a mathematical function defining the spatial separation between adjacent turns of a winding path, the mathematical function dependent on one or more parameters of the electrical machine and/or of the anticipated operating environment of the electrical machine; forming (S2), by three-dimensional, 3D, printing, an electrically insulating body comprising a channel defining the winding path in accordance with said function, the channel having an inlet and an outlet; heating (S3) the electrically insulating body to a temperature above the melting point of an electrically conducting material; flowing (S4) the electrically conducting material through the inlet to the outlet to fill the channel; and cooling the electrically insulating body to solidify the electrically conducting material within the channel, thereby forming said winding assembly.

Abstract: A method for controlling transient operation of a rotary electric machine in an electric powertrain or other electrical system includes, during a shunt angle transition occurring during a maximum torque per ampere (MTPA) control region, determining an estimated output torque of the electric machine via a torque estimation block using d-axis and q-axis current commands and an additional value, i.e., an actual shunt angle or a machine temperature. The method includes subtracting the estimated output torque from a commanded output torque to derive an adjusted commanded torque value or torque error, and calculating, from the torque error, a delta d-axis current command and a delta q-axis current command. The method includes adjusting d-axis and q-axis current commands using the delta commands to produce adjusted d-axis and q-axis current commands, which are then used as closed-loop feedback control terms by the torque estimation block.

Abstract: Groove holes capable of positioning each of the segment cores with respect to a winding jig in an arc attitude with wide gaps between the teeth edges of respective pole teeth are respectively formed in yoke parts positioned at both end parts of each of the segment cores in a longitudinal direction.

Abstract: A ceiling fan has a motor and multiple fan blades. The motor has a stator assembly and a rotor assembly. The stator frame has a frame, a stator core, and multiple coils. The frame has multiple branch containers and multiple protrusions on the branch containers. The stator core is securely mounted in the frame. The coils are wound on the branch containers and protrusions. Therefore, the coils may be an ellipse and thus the magnetic flux therein is larger, which converts electric energy torques to drive the rotor assembly in higher efficiency. Besides, the rotor has multiple magnetic components and each magnetic component has a magnetic pole. An amount of the magnetic poles is larger than that of the branch containers. The motor can provide a higher torque even at a lower rotating speed.

Abstract: An electric powerhead includes a housing including a mounting plate including a shaft opening and a plurality of first openings arranged in a standard horizontal shaft engine mounting pattern. The housing also includes a base including a plurality of second openings arranged in a standard horizontal shaft engine support pattern. The electric powerhead further includes an electric motor positioned within the housing, where the electric motor includes an output shaft that extends through the shaft opening of the mounting plate and where the output shaft is configured to rotate about an axis of rotation.

Abstract: An electric drive motor includes a stator with pole shoes and at least one electrically controllable stator winding. A permanent magnet rotor is rotatably mounted in the field of the stator winding leaving an annular gap. The rotor includes a motor shaft and a laminated core on the shaft. The core includes at least a number of permanent magnets corresponding to the number of poles of the rotor. The magnets in the core are coated with a plastic envelope having at least one side wall covering the core on at least one axial front side. The side wall includes at least one recess freeing areas of the axial front side covered by the side wall, as access openings for boring the core to balance the rotor. A household appliance has the electric drive motor and an injection mold is used for producing the electric drive motor coated with the envelope.

Abstract: The present disclosure discloses an integrated electrical motor, comprising at least two sets of corresponding stators and rotors, wherein the at least two sets of corresponding stators and rotors are mounted within the same housing, and are connected to the corresponding controllers, and the rotors are mounted on the same shaft. The total output torque of the electrical motor can be distributed to the shaft from different stator/rotor pairs, and when one or more of the sets of stators and rotors have malfunction, the remaining stators and rotors maintain running. The integrated electrical motor of the present disclosure has compact structure, small axial dimension, distributable torque, high safety margin and high reliability.

Abstract: A rotor core for a rotary electric machine, includes: a shaft hole into which a shaft rotating about a rotation axis is inserted and fixed; an inner ring portion provided with the shaft hole therein and having an outer edge in a circular shape coaxial with the rotation axis; an outer ring portion coaxial with the rotation axis and disposed radially outward of the inner ring portion; a connection ring portion coaxial with the rotation axis and disposed between the inner and outer ring portions; inner ribs interconnecting the inner and connection ring portions and extending in a crossing direction to the rotation axis; and outer ribs interconnecting the connection and outer ring portions and extending in the crossing direction. The inner and outer ribs are disposed respectively in different phases in a peripheral direction of the connection ring portion.

Abstract: A rotary electric machine includes: a housing; a stator that is disposed in the housing; a rotating shaft that is rotatably disposed in the housing; a rotor that is disposed on the rotating shaft; and a rotational angle detecting apparatus that generates a signal that corresponds to a rotational angle of the rotating shaft. The rotational angle detecting apparatus includes: a magnetism generating body that is disposed on an axial end surface of the rotating shaft; and a magnetic sensor that faces the magnetism generating body. A recess portion is disposed on the end surface. The magnetism generating body is disposed in the recess portion.

Abstract: An electric pump apparatus includes a motor, an inverter board, a coil support, a housing, and a pump portion driven by the motor. Coils include first end portions and second end portions drawn out from the coils, the first end portion and the second end portion defining both end portions of each of conducting wires of the coils. The inverter board is on a first axial side of the motor. The coil support includes a neutral point busbar that electrically connects the coils to one another. The coil support includes a first region including the first end portions arranged therein, each first end portion being directly connected to the inverter board, and a second region including the second end portions and the neutral point busbar arranged therein, each second end portion being connected to the neutral point busbar.

Abstract: An electric machine is described herein. The electric machine includes a casing, a stator, a rotor generally coaxial with the stator, an enclosed cooling assembly circulating a first cooling fluid within the casing, and an open cooling assembly through which a second cooling assembly can flow; the open cooling assembly cooling both the stator and the first cooling fluid.

Abstract: A first bearing box has, in one end face perpendicular to a direction along a rotor shaft and farther from a fan, an air outlet for air taken in through an air inlet to exit. A flow channel is defined between an outer peripheral surface of a cylindrical portion of the first bearing box continuous with the end face and a frame. A value obtained by dividing a distance between an outer periphery of blades in the fan and the air outlet by an outer radius of the blades is greater than or equal to a threshold.