Abstract: A stator assembly including a plurality of stator coil assemblies and a stator coil support structure constructed of a non-magnetic, thermally-conductive material. The stator coil support structure includes an axial passage for receiving a rotor assembly and a plurality of channels positioned radially about the axial passage. Each channel is configured to receive one or more of the stator coil assemblies.

Abstract: A conductive heat transfer system may include a heat conductive element to thermally couple the pump motor of a liftgate assembly to an outer surface of a pump motor housing assembly.

Abstract: The invention relates to a rotating electrical machine, provided with a stator, a cooling device comprising at least one fan that initiates a coolant flow in order to cool and evacuate, to the outside, the heat produced in the machine comprising at least one heat pipe having at least one heat absorption area, and at least one condensation area. Said heat pipe belongs to a device that rectifies the current produced by the stator of the machine et which extends with its condensation area until reaching the flow of the coolant. The invention can be used for alternators or for alternating current starters in automobiles.

Abstract: The slip ring end (SRE) frame is an SRE frame of popular small dimension designed to allow available larger rectifier assemblies having larger heat sinks to be fitted into the SRE frame, thus providing increased heat dissipation capability. Two flattened frame mounting bore wells are provided in an inner cylindrical side wall of the SRE so that larger rectifier assemblies of choice having increased current carrying capability can fit inside the SRE frame. Specially configured rectifier heat sink mounting holes are provided so that the larger rectifier assemblies may be properly and securely mounted in the SRE frame. Additionally, the small SRE frame features strategically placed ventilation apertures of larger dimension to permit greater air flow through the device, thus producing cooler alternator running temperatures and providing higher durability.

Abstract: An armature winding includes a plurality of strand groups each having strands transposed and bound in at least two rows and multiple tiers, and a main insulator for covering the strand group. The strands belonging to a strand group on one side of a central strand group has a cross-sectional area smaller than that of the control strand group, and the strands belonging to the strand group on the other side of the central strand group has a cross-sectional area larger than that of the central strand group.

Abstract: The present invention provides a drive guide apparatus capable of ensuring an increased lifetime by preventing heat generated from a primary side of a linear motor from being transferred to a rail or a moving member of a guide mechanism to which the primary side of the linear motor is connected, thereby preventing variation of rolling resistance or sliding resistance of the guide mechanism. The drive guide apparatus has a linear motor and a guide mechanism that has a rail and a moving member provided to be movable relative to the rail. A primary side of the linear motor is connected to the rail. Thermal for blocking heat generated from the primary side of the linear motor are provided between the primary side and the rail of the guide mechanism to which the primary side is connected directly or indirectly.

Abstract: An outer rotor motor having a tubular shaft for maximum motor cooling effect. Coolant may flow through coolant channels of the shaft and the motor in various configurations to carry away the heat. A thermally conductive component may be inserted into the hollow shaft under the stator section to optimize the airflow and cooling. Physical construction of the motor and control algorithms may further enhance motor performance with appropriate sensors. A compact, smooth, and cool operating motor may thus be achieved for applications such as treadmills or other belt drive systems.

Abstract: A vehicle alternator for generating electric power has a stator, a rotor, a rectifier, a regulator case, and a cooling fin part. A stator winding is wound on the stator. The rotor is placed on opposite faces to the stator. The rectifier rectifies an alternating current output voltage excited in the stator winding. The regulator case accommodates a regulator substrate for adjusting the output voltage and a heat sink. On one surface of the heat sink the regulator substrate is mounted. The cooling fin part has plural cooling fins bonded to the other surface of the heat sink. The cooling fin part and the heat sink are made of a same material of a superior thermal expansion coefficient, such as copper or copper alloy.

Abstract: A device for cooling an electronics unit, in particular a control electronics unit of a hand-held power tool, has an air-conducting device that directs at least a portion of an air stream exiting an electric motor to the electronic unit, while a method for cooling includes directing an air stream exiting the electric motor to the electronics unit.

Abstract: A circulation system (330) for a mover (328) includes a fluid source (360) that directs a first fluid (356) into a first inlet (364A) of the mover (328) and a second fluid (358) into a second inlet (366A) of the mover (328). In one embodiment, a temperature of the second fluid (358) at the second inlet (366A) is different than a temperature of the first fluid (356) at the first inlet (364A). For example, in one embodiment, the temperature of the second fluid (358) at the second inlet (366A) is approximately at the boiling temperature of the second fluid (358). In an alternative embodiment, the mover (428) includes a heat transferer (469) that transfers heat from a second passageway (466).

Abstract: Disclosed herein is an electronic package for an electrical machine including a slip ring end frame; a plurality of negative diodes dispersed in an angular fashion in the SRE frame acting as a negative heat sink; a plurality of positive diodes mounted on a separate electrically conductive plate located above a location of the plurality of negative diodes; a non-conductive separator fitted over a series of bosses, configured to electrically insulate; a terminal assembly configured to make appropriate electrical connections between the positive and negative diodes, stator phase leads, and a regulator, which is operably fastened to the SRE frame at a plurality of locations, the regulator electrically connects to the positive heat sink, a stator phase terminal extending from the terminal assembly, SRE frame, and a brush holder; wherein the regulator is perpendicular to the SRE frame.

Abstract: Disclosed is a permanent type motor in which a permanent magnet is attached to or embedded in a rotor in a rotatable manner. More particularly, a permanent magnet rotor type motor, which can be easily manufactured while achieving an improvement in heat-emission performance, is disclosed. The permanent magnet rotor type motor includes a stator having a stator coil would about an insulator, a printed circuit board (PCB) secured to an upper portion of the stator and having a powered device mounted on the PCB, and a bracket having a heat-emitting portion formed at an upper surface of the bracket, the bracket being configured to receive the stator and the PCB such that the powered device comes into contact with the heat-emitting portion.

Abstract: An electric drive unit includes an electric motor for driving a fan. The motor has an electronic control module. An impeller wheel for producing a working air flow is mounted by bearings on an axle of the electric motor. The hub of the impeller wheel has at least one preferably two walls enclosing a cooling space or cooling space portions. At least one cooling surface of a cooling body is in contact with components of the electronic control module and projects into the cooling space. A gap formed between the hub of the impeller wheel and a carrier section communicates with an inner hub space. Holes (43, 322) communicating with the hub inner space are provided in at least one component of the electric drive unit. When the impeller wheel rotes a convection cooling air flow is established between the gap and the holes.

Abstract: An automotive alternator in which a fan rotating together with a rotor to direct air from a suction aperture into a case, blow the air centrifugally, and discharge the air externally through a discharge aperture has a blade including an interposed portion extending axially from an end surface of a pole core between an adjacent pair of claw-shaped magnetic poles. For this reason, cooling of a rotor coil and a stator coil is improved by improving capacity of the fan in a limited space, thereby enabling output to be improved.

Abstract: An ac generator for a vehicle includes a rotor having a field coil, a stator having a stator winding disposed around the rotor to provide ac power in cooperation with the rotor, a brush unit disposed near a rotation axis of the rotor, and a voltage regulator for controlling output voltage of the ac power. The voltage regulator has a regulator circuit section and a heat sink for dissipating heat generated by the regulator circuit section. The heat sink has a plurality of axially projecting cooling fins that extends in a circumferential direction of the rotor.

Abstract: Taught herein is a controller for a DC brushless motor comprising a control board (3) and a housing (4); wherein the control board (3) is disposed in the housing (4), and the housing (4) is made of metal materials with good thermal conductivity; a plurality of heat sinks (5) are disposed at the bottom of the housing (4), thereby heat generated by the control board (3) will be dissipated fast, and the operating temperature and failure rates are reduced; an integrated power module chip (7) disposed at the bottom of the control board (3) transfers heat to the housing (4) via an insulating heat sink (8), and in doing so prevents electric leakage; the purpose of a plurality of gaps (9) disposed at the top of the housing (4) is to provide ventilation, and to dissipate heat fast; all of these design characteristics make the invention simple in structure, and convenient for mass assembly.

Abstract: A hybrid stepper motor includes a stator having a number of poles. Teeth are formed on the stator poles and separated from each other by slots. A magnet is inserted in the slots to a predetermined depth from a top surface of the stator teeth. The motor further includes a rotor that is provided coaxial with the stator. Teeth are also formed on the rotor opposite the stator teeth. The rotor teeth enable the rotor to be rotated relative to the stator in cooperation with the stator teeth.

Abstract: The invention relates to a heat sink arrangement with a heat sink element, with a cylindrical interior, in particular a housing of an electric motor or housing part for such, with power electronics integrated into the housing or housing part, with at least one electronics component attached to the heat sink element from inside, in which the heat sink element is a sector of a cylinder adapted to the cylindrical interior of the heat sink arrangement, and that a springy clip is present that presses onto the ends of the sector such that the heat sink element is pressed against the cylindrical interior by spreading, as well as to an electric motor, a housing part and a springy clip.

Abstract: In order to obtain a magnetic bearing apparatus in which a large cooling effect is exerted by a simple configuration, fins 15 which form an air flow in a rearward direction are disposed in a rear portion and outer diameter of a rotary shaft 1, a generator 16 which converts an air flow produced by rotation of the fins 15 to a compressed vortex flow, and which has an axial through hole is fixed with being separated from the fins 15 by an appropriate gap, and a tube 20 in which the inner diameter is larger than the diameter of the through hole 19 of the generator 16, and which has a control valve 21 at the rear end is provided in rear of the generator 16. Cooling wind is produced by a driving force of the rotary shaft 1. Cooling wind flow paths 22 through which the cooling wind is to be passed, and which axially elongate are formed in the rotary shaft 1.

Abstract: A cooling airflow introducing guide portion is disposed on a portion of a connector that faces fins of a voltage regulator heatsink so as to extend in a direction of array of the fins so as to ensure a predetermined clearance relative to the fins. An air intake aperture is disposed through a portion of the rear bracket that faces the voltage regulator heatsink.

Abstract: A stator for an electrical machine includes teeth assembled from a plurality of stacked laminations mounted on a cylindrical protective surface thereby forming a plurality of slots. The stator also includes an armature winding assembled within the teeth by inserting components of the armature winding into the plurality of stator slots from positions external to the teeth in a manner that facilitates mitigating potential for coil distortion. The armature winding includes a plurality of coils that each include an end winding. The stator further includes a segmented yoke inserted around the armature winding in a manner that facilitates mitigating a potential for disturbing the end winding of the coils. Independently assembling the stator components in this manner facilitates varying a thickness and/or the number of heat conducting laminations between the yoke and teeth that subsequently facilitates heat transfer from the armature winding to an outer pressure casing of the machine.

Abstract: A thermal conductor for a heat-generating liquid pump system of a pool containing liquid and including a pipe. The conductor is adapted for conducting heat from the pump system to liquid circulated by the pump system. The conductor includes a body in thermal communication with a heat generating portion of the pump system and in thermal communication with only an outside surface of the pipe and not in direct contact with the liquid.

Abstract: A controller-integrated motor includes a motor main body and a controller integrated with the motor main body to control the motor main body, the motor main body, including a stator core, a shaft which rotates to exert driving force on the motor main body, a frame which holds the stator core and the shaft, and an outer fan provided around the shaft so that the motor main body is recessed inward toward a rotational center of the shaft, the outer fan discharging cooling air stream to cool the motor main body, the controller being provided in proximity to an outer periphery of the frame, the motor main body being formed so that a cooling air stream from the outer fan flows in an axial direction of the shaft along an outer peripheral surface of the frame.

Abstract: In an electric rotary machine, a stator, a metallic supporting member configured to support the stator, and a rotor are provided, the rotor is relatively rotatably supported with respect to the stator, a magnetic path is formed via a gap portion between the stator and the rotor to give a torque to the rotor, and a space section is provided to interrupt the magnetic path at a position of the metallic supporting member near to a magnetic pole of the stator facing the gap portion.

Abstract: A motor includes a rotor and a stator. The stator includes a circuit board on which a control circuit for controlling rotation of the rotor is formed. A circuit component of the control circuit is mounted on a surface of the circuit board facing a base portion. A heat conductive member is arranged between the base portion and the circuit component to be in contact with the base portion and the circuit component. Thus, a heat generated by the circuit component is transferred to the base portion through the heat conductive member and is then transferred to connecting portions and a wall of a housing which are formed integrally with the base portion from thermally conductive material.

Abstract: A stator for an electrical machine includes a flux return ring, a stator winding, and stator teeth located equidistantly along the flux return ring for accommodating the stator winding, wherein the flux return ring includes cooling elements.

Abstract: In an axial fan, a case (40) accommodating the fan motor stator (50) is anchored into a bearing retainer (10), in which ball bearings (20, 21) as a bearing unit are accommodated, along a bulge part (13) formed on the lower end portion thereof. The case (40) extends heading axially downward, wherein there is no diametrical overlap between the ball bearings (20, 21) and the stator (50). Since only the bulge part (13) of the bearing retainer (10) is fixed to the case (40), heat arising from the stator (50) is thermally conveyed via the case (40) only to the bulge part (13). The fact that the thermal conveyance zone is minimal enables unrestrained curtailment of heat transmitted to the ball bearings (20, 21). As a result the axial fan can be designed for prolonged bearing lifespan.

Abstract: One or more wheels of an electrically powered vehicle contains a motor rotor and a motor stator that is mounted on an integrated structure having a motor stator mounting element portion and wheel axle portion on each side thereof. The structure is fabricated from a unitary non-ferromagnetic substance. A rotor housing is journalled to the axle portion on both sides of the motor stator mounting element via bearings. A wheel assembly is mounted on the rotor housing thereby to be driven by the rotor. Forced-air cooling is provided through a hollow central passage. A plug separates the passage into two distinct sections, the inlet and the outlet. A plurality of cavities, provided with heat exchanger surfaces, are contained within the stator mounting element portion. Channels at each end of each cavity extend in the radial direction into the central passage.

Abstract: Disclosed is an axial fan motor for air-cooling a heat sink of a heating element and thermally connected to the heat sink. The casing of the axial fan motor is formed of a plurality of laminated metal plates. The plurality of metal plates include a single first metal plate and a plurality of second metal plates. The single first metal plate, which is an outermost layer located at the air exhaust side of the fan, has a peripheral portion, a central portion, and a plurality of arm portions for connecting the peripheral portion and the central portion. A bearing holder for supporting a rotary shaft of the fan is attached to the central portion.

Abstract: An automotive alternator according to the present invention includes: a shaft having an end portion rotatably supported by a rear bearing housed inside a rear bearing housing portion of a rear bracket; a rectifier for converting an alternating current into a direct current; and a first centrifugal fan for cooling a rotor, a stator, and the rectifier by sucking in external air through a suction inlet in the bracket when the rotor rotates, the rectifier has a positive-side heat sink for cooling a plurality of positive-side diodes, the suction inlet is formed in a vicinity of the rear bearing housing portion, and a plurality of rear bearing cooling fins extending in a direction perpendicular to the shaft are formed on a side of the suction inlet near the rear bearing housing portion.

Abstract: To provide a cooling structure which can effectively cool a controller for controlling a drive of a motor in an electric vehicle. A controller cooling structure of an electric vehicle is provided with a motor for supplying power to the rear wheel as the drive wheel, a motor driver for controlling a drive of the motor and a cooling plate for circulating the cooling water into the internal side of the motor driver in order to cool the same. In this controller cooling structure, one surface of the cooling plate is arranged adjacent to the motor driver and the other surface of the same is arranged adjacent to the rear swing arm.

Abstract: A power choke or transformer has an iron core, windings, and a cooling apparatus having a heat exchanger with a heat absorber and a cooling fluid duct operationally connected to the heat absorber, wherein the iron core is operationally connected to the heat absorber to remove heat emitted by the iron core.

Abstract: A generator for a vehicle includes a stator having an armature coil, a rotor having a field coil and a voltage regulator having a surge absorbing capacitor element and a heat sink. The heat sink dissipates heat that is transmitted to the capacitor element, so that temperature of the capacitor element can be kept low enough to prevent deterioration of the capacitor element.

Abstract: A stator assembly includes a plurality of stator coil assemblies and a stator coil support structure constructed of a non-magnetic, thermally-conductive material. The stator coil support structure includes an axial passage for receiving a rotor assembly and a plurality of channels positioned radially about the axial passage. Each channel is configured to receive one or more of the stator coil assemblies.

Abstract: The heat-generating components of an integrated motor system are disposed proximate the motor body, for efficient heat dissipation, and the heat-sensitive components are segregated therefrom, physically and thermally.

Abstract: The invention concerns a rotating electrical machine, in particular an alternator or an alterno-starter for a motor vehicle, comprising: a rotor (1) centered and fixed on a rotating shaft (2) supported by at least one rear bearing (4), the rear bearing (4) including radial cooling fluid outlets (4a, 4d); a stator (3) enclosing the rotor, the stator including a field coil (7) including windings constituting phases of the electrical machine; an electronic power circuit (15) connected to the windings of the stator phases; a heat dissipation bridge (16) including a first surface whereon is mounted the electronic power circuit and a second surface, opposite said first surface and oriented towards the rear bearing, said second surface forming a longitudinal wall of a passageway (17) for cooling fluid circulation, another longitudinal wall of said passageway (17) being formed by the rear bearing (4) supporting the stator wherein the second surface of the heat dissipating bridge (16) comprises cooling means (18) arra

Abstract: The present invention provides an AC generator for a vehicle, capable of improving the cooling capability and environmental resistance of a rectifier. The rectifier of the vehicle AC generator includes a positive electrode side radiating fin and negative electrode side radiating fin disposed in piles in a axial direction, a positive electrode side rectifying elements and negative electrode side rectifying elements provided in the radiating fins, respectively, and a terminal board. The positive electrode side radiating fin is equipped with cylindrical fixing portions to which the positive electrode side rectifying elements are fixed and radial sub-fins extending radially from the fixing portions. An opening portion surrounded by the fixing portion, the radial sub-fin and others forms an axial air flow passage.

Abstract: The invention relates to a ship's propulsion and steering arrangement surrounded by water comprising an electric motor in a chamber, a propeller shaft associated with the electric motor having a propeller fitted outside the chamber, and a pressure source for pressurizing the chamber with air or some other pressurizing medium. The invention also relates to a method for managing fluid flows in the propulsion and steering arrangement of the aforementioned kind, wherein the chamber is sealed against the water pressure from outside and against other compartments of the ship. The chamber is pressurized by means of a flowing medium, monitoring of the pressure in the chamber is performed, and the composition of the medium escaping from the chamber in a controlled manner is monitored. Further, the invention comprises a method for improving the cooling by means of a pressurized gaseous medium.

Abstract: A winding of an electric machine is provided, where the winding includes at least one series of serially connected AC bars. Each AC bar includes a series of serially connected turns formed by litz wire having a plurality of strands, and at least one cooling tube. Individual strands of the plurality of strands are respectively positioned substantially adjacent to the at least one cooling tube at at least one transfer point for providing heat transfer from the respective individual strands to the at least one cooling tube.

Abstract: The invention proposes a method of making a rotor (12) for a rotary electrical machine, the rotor including a core (14) on which there is formed at least one electrical winding (16) comprising at least one electrically conductive element (18) which is coated with an outer bonding layer (32), of the type in which the winding step is followed by a step of change of state which causes softening of the bonding material to take place and which then causes it to solidify once more, characterized in that the winding of the conductive element (18) is carried out on the convex outer cylindrical wall (40) of a tubular element (42) of the core, and in that, after the said step of change of state, the tubular element (42) is assembled on a core body (44) in such a way as to minimize the temperature gradient in the winding (16) during the step of change of state.

Abstract: A diode plate for an electric machine includes a body having a thickness and defining a central axis thereof. A plurality of cooling plates having a uniform thickness of 1 millimeter or less over the entire surface area of the cooling plates are mounted onto the body of the diode plate. A plurality of louvered slots may be formed within each of the cooling plates. Each louvered slot has a louvered portion that extends from the cooling plate at a predetermined angle relative to the cooling plate.

Abstract: A wind power installation includes a nacelle, and energy conversion system for converting wind power into electric energy. The energy conversion system includes a heat-generating source which is disposed in the nacelle and constructed to include a closed primary cooling system using air for dissipating generated heat. Further provided is an open secondary cooling system which uses ambient air for cooling heated air from the primary cooling system.

Abstract: The invention relates to a heat sink arrangement with a heat sink with a cylindrical interior, in particular a casing of an electric motor or casing part for such, with power electronics integrated into the casing or casing part, with at least one electronics component pressed against the heat sink from inside, in which there is a spring ring, mounted in such a way that a contact pressure from the spring ring and the at least one electronics component is transmitted to the heat sink, and also an electric motor and a casing part for adding to an electric motor.

Abstract: Disclosed is an axial fan motor for air-cooling a heat sink of a heating element and thermally connected to the heat sink. The casing of the axial fan motor is formed of a plurality of laminated metal plates. The plurality of metal plates include a single first metal plate and a plurality of second metal plates. The single first metal plate, which is an outermost layer located at the air exhaust side of the fan, has a peripheral portion, a central portion, and a plurality of arm portions for connecting the peripheral portion and the central portion. A bearing holder for supporting a rotary shaft of the fan is attached to the central portion.

Abstract: A rise in temperature of magneto coils can be suppressed, thereby improving the electrical efficiency, service life and reliability thereof. A flywheel (3) has a cylindrical portion (4), and is rotatable about an axis of rotation A—A. A plurality of magnets (7) are mounted on an inner peripheral surface of the flywheel (3) so as to rotate therewith. A stator core (10) has a plurality of teeth (12) protruded outwardly in a diametral direction, and is disposed in opposition to the magnets (7). Conductive wires are wound around the teeth (12), respectively, to form magneto coils (11). The stator core (10) has a laminated core (15) formed of a plurality of magnetic sheet steel plates laminated one over another, and a pair of end plates (16, 17) disposed so as to sandwich opposite side surfaces of the laminated core (15). At least one of the pair of end plates (16, 17) is made of aluminum whose heat radiation is higher than the magnetic sheet steel plates.

Abstract: A terminal arrangement of a motor has a terminal base formed with a plurality of terminal pins, the terminal base being fixed detachably on a stator iron core of a motor, terminal pins formed on bobbins, connected electrically with windings wound around the bobbins, a printed circuit board arranged on the stator iron core so as to connect electrically the terminal pins formed on the bobbins with the terminal pins formed on the terminal base, and an end bracket arranged so as to cover the printed circuit board. A hole is formed in the stator iron core, and an earth electrode is projected from the terminal base, and inserted into the hole so as to be connected electrically with the stator iron core, the earth electrode being connected electrically to one of the terminal pins formed on the terminal base. A capacitor motor has a motor having a stator iron core, and a phase advancing capacitor fixed detachably on the stator iron core.

Abstract: A rotor device capable of forcing heat dissipation includes a hub and an inner casing. The hub provides a closed end with at least a through hole radially disposed thereon and a projection extending therefrom along the circumference of the through hole. The inner casing is disposed in the hub. Fluid is forced by the projection to move outward or inward via the through hole so that temperature of the fluid in the hub and the inner casing can be lowered down.

Abstract: An AC generator has negative pole-side rectifier devices press-fitted to a holder fin so as to dispose a bottom face of the rectifier device on a surface of the holder fin. The holder fin is disposed in such a manner that the bottom face of the rectifier device faces a rear frame of the AC generator. A clearance is formed between the rear frame and the bottom face through which the cooling wind for the rectifier device flows. The rear frame is provided with a slant face on its outer wall face for inducing the cooling wind introduced through an opening of the protection cover of the AC generator to the rectifier devices. Thus, the cooling wind induced by the slant face can hit on the bottom face of the rectifier devices directly, so as to cool the rectifier device well.

Abstract: A power hand tool includes a body and an electric motor in the body and having a shaft for driving a connector for connecting and driving a cleaning/polishing implement. An enclosure encloses the motor for protection against intrusion of a liquid, and includes a thermally conductive end cap that is exposed outside of the body. A thermal conductor in contact with a metal casing of the motor and the end cap conducts heat from the motor to the end cap for heat dissipation.

Abstract: The invention relates to a ventilation device for an electrical machine including a rotor (42) provided externally with reliefs (46) delimiting between them cooling channels (46) in which a cooling fluid circulates and a stator. The rotor is equipped with at least one axial fan (48) suitable for directing an airflow into the cooling channels. The invention can be applied to the ventilation device for a motor-vehicle alternator.