Abstract: A rotary cooling system is provided that includes a stator having at least one tooth and a plurality of wires coiled around the tooth and a passage extending between the plurality of wires.

Abstract: A turbomachine such as an aircraft turbojet including an electrical generator/starter that can be mounted and dismounted by axial translation in an upstream enclosure of the turbomachine between the low-pressure compressor and the high-pressure compressor, and couple to electrical cables which extend inside the structural arms of the intermediate casing of the turbomachine.

Abstract: A generator includes a housing and a stator arranged within the housing. The stator includes a first end that extends to a second end, and a plurality of axial flow passages extending between the first and second ends. The generator also includes at least one air flow re-direction member provided on at least one of the first and second ends of the stator. The at least one air flow re-direction member fluidly connects adjacent ones of the plurality of axial flow passages. The at least one air flow re-direction member guides an air flow passing though one of the plurality of axial flow passages in a first direction into an adjacent one of the plurality of axial flow passages in a second direction, the second direction being distinct from the first direction.

Abstract: An electric machine for a power system is disclosed. The electric machine has a housing with a first end cap and a second end cap. The first end cap has a first fluid passageway, and the second end cap has a second fluid passageway. The electric machine also has a stator fixedly disposed within the housing, and a rotor rotationally disposed radially inward from the stator. The rotor has an axial passageway fluidly communicating the first fluid passageway with the second fluid passageway.

Abstract: A variable reluctance electric machine comprising a rotor and a stator; the stator having two or more electromagnetic windings and the rotor having a plurality of salient poles, the salient poles defining axially extending cooling fluid channels; wherein the salient poles and the cooling fluid channels are circumferentially skewed along at least a part of their length whereby in use the cooling fluid channels impel cooling fluid in a substantially axial direction towards the electromagnetic windings and the stator to facilitate heat transfer and dissipation from the windings.

Abstract: A machine has a rotor, that can be rotated about an axis, with a superconductive winding that is coupled in a heat-conducting manner to a central coolant area of a fixed heat conducting body proturding into a hollow of the rotor via a winding carrier and a heat contact gas. The coolant area forms a line system with the line parts thereof, that are laterally connected thereto, and a condenser area of a cold unit, in which a coolant circulates in the line system as result of a thermosiphon effect. To maintain the supply of coolant to the central coolant area, even when the rotor encounters difficulties, the coolant area is provided with a lining of a porous material, preferably a sinter material, having high thermal conductivity.

Abstract: A cooling gas ventilation chimney is provided for enhancing the heat transfer of an end region of a dynamoelectric machine. The dynamoelectric machine includes a rotor having a plurality of radial slots. A plurality of coils are seated in the radial slots, and the coils form a plurality of radially stacked turns. The ventilation chimney includes one or more chimney slots defined in at least a portion of the radially stacked turns. The chimney slots extend in a substantially radial direction to the rotor, and some of the chimney slots have an axial or circumferential length different from other chimney slots.

Abstract: By reviewing a material of a forcer housing and an assembly structure of a coil member with respect to the forcer housing, a thrust force is increased, an optimum shape can be easily given to the forcer housing depending on a purpose of use, and a linear motor can be manufactured at low cost. The linear motor includes a magnet rod composed of a large number of magnetic poles arranged with predetermined pitches along an axial direction and a forcer having a through-hole into which the magnet rod is loosely inserted and reciprocatable relatively to the magnet rod according to an applied electric signal. The forcer is composed of a forcer housing in which the through-hole is defined and a coil member which is arranged on an inner peripheral surface of the through-hole of the forcer housing and to which the electric signal is applied. The forcer housing is formed by mold forming with an insulating nonmetal inorganic material.

Abstract: A compressor assembly for use in transporting natural gas is provided. The assembly includes a natural gas compressor comprising at least one stage of compression, a permanent magnet-type super-synchronous motor coupled to the natural gas compressor for powering said compressor, and a housing, the compressor positioned within the housing, and the compressor configured to facilitate increasing a pressure of natural gas being transmitted.

Abstract: The invention relates to a direct electrical drive (1) for a wheel set (30) of a vehicle, wherein the direct electrical drive (1) comprises a stator (7) and a rotor (3), with the rotor (3) being coupled mechanically with a wheel set shaft (11). The rotor (3) includes a cooling device. The cooling device includes cooling channels (22), an air inlet (37) and at least one fan (9), whereby the cooling channels (22) extend inside the rotor (3).

Abstract: The invention relates to a cooling device for an electric machine, in particular, for an electric motor comprising a stator (2) and a rotor. According to the invention, axial channeled recesses (6) are provided on the outside of the stators (2), in which a cooling tube or cooling hose may be introduced and/or which may be sealed by means of a cover (10) to give a cooling air channel, an electric motor with such a cooling device and a core sheet (4) for a lamination bundle of a stator (2), the core sheet (4) comprising amongst other things a number of stator grooves (5). The core sheet (4) comprises recesses (6) with a channel cross-section on the outer edge thereof. The invention further relates to an electric machine the stator (2) of which has a lamination bundle made up of a plurality of such core sheets (4). The invention also relates to a production method for such electric machines. The cooling tubes or cooling hoses can be simply inserted in the half-open channeled recesses from without for cooling.

Abstract: A cooling flow bifurcation member is positioned in an outside radial flow passage of a generator between an end portion of a stator core and a stator flange. The flow bifurcation member includes a main body portion having a tapered surface that transforms a first flow having a first velocity passing into the outside radial flow passage into at least one other flow having another velocity. The at least one other flow is directed along at least one of an outer surface of the end portion of the stator core and the stator flange.

Abstract: A cooling system for an electrical machine is provided. The cooling system includes at least one baffle enclosing multiple endwindings, wherein the at least one baffle is configured to guide a cooling fluid flow to multiple regions of interest in the machine.

Abstract: A stator assembly for use in a fluid-cooled motor is disclosed, wherein a cooling jacket is disposed around a main body of the stator, the cooling jacket including at least one conduit adapted to receive a coolant therein, thereby minimizing a complexity and a cost of manufacture of the stator assembly, and maximizing a cooling capability of the stator assembly.

Abstract: A circuit board heatsink 60 for cooling a regulator circuit board has a flat base portion 61. Fifteen fins 62 are respectively disposed so as to project vertically from a first surface of the base portion and are arranged so as to be parallel to each other. The regulator circuit board is fixed to a second surface of the base portion 61 of the circuit board heatsink 60, and is housed and held inside a regulator circuit board housing portion of a regulator assembly such that the fins 62 face the rear bracket.

Abstract: A high speed generator cooling system directs a cooling oil spray through a chamber inside a coil support wedge assembly, which may be disposed adjacent to the generator coils. Heat from the generator coils may be conducted through the walls of the coil support wedge assembly and into the chamber where it is removed by the cooling oil spray passing through the chamber. The cooling oil passes through a generator rotor shaft and into a cooling passage in least one of the rotor laminations.

Abstract: The invention relates to an electric appliance (1) which comprises a machine module (2) provided with an electric machine (3) comprising a stator (4) and a rotor. A machine housing (7) of the machine module (2) receives the electric machine (3). A cooling module (19) comprises a cooling housing (21), which is fluidically connected to the machine housing (7) by means of a first cooling fluid connection area (20) in a housing wall (17) of the machine housing (7) and to at least one second cooling fluid connection area (23) in the housing wall (17) of the machine housing (7). The inside of the machine housing (7) can be fluidically connected to the inside of the cooling housing (21) in one section of the housing wall (17), which is oriented towards the cooling housing (21), by means of at least one third cooling fluid connection area (25) comprising at least one cooling fluid through-opening (26).

Abstract: In one possible embodiment, an aircraft electric motor cooling system is provided having an airflow path through a spinner which includes a first airflow path between an inner rotor and a stator, a second airflow path between an outer rotor the stator and a third airflow path along an outer surface of the outer rotor.

Abstract: A rotor for a generator includes a cylindrical rotor body with axial winding slots which are arranged in a distributed manner over the circumference and in which are arranged conductor elements which extend in the axial direction. A cooling medium from a sub-slot which is arranged at the bottom of the winding slot is fed along the axis in periodic intervals to the conductor elements. Beneath the conductor elements provision is made for ripple springs which in each case press the conductor elements of a winding slot against a slot wedge which closes off the winding slot at the top. With such a rotor, an adequate spring force is achieved by the ripple springs being arranged at the bottom of the sub-slot and, via an axial profile which is arranged in the sub-slot, acting by their spring force upon the conductor elements which lie above them.

Abstract: Certain exemplary embodiments can comprise a system for managing air flow within an induction motor, such as in the rotor assembly of the motor. The system can comprise a gap blocker to substantially impede air flow through radial apertures defined by and/or near end regions of the rotor conductor bars.

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: The invention relates to a gas-cooled electrical device (13), especially a gas-cooled generator, which comprises at least a rotor (1), a stator (2) and also a stator casing (3) which encloses this stator, and an end-winding space (5). In this case, passages for a cooling gas are provided both in the rotor (1) and in the stator (2), wherein the end-winding space (5), especially connectors (7) and/or output conductors (7) which are arranged therein, are impinged by at least some of the cooling gas flow (8) which issues from the rotor (1). In order to be able to achieve an especially concentrated and controlled cooling, at least the connectors (7) and the output conductors (7) are arranged in the working area of at least one guiding device (14) which guides the cooling gas flow (8).

Abstract: The invention relates to an electric machine (6) comprising a rotor and a stator, the rotor having a shaft (7) and the longitudinal extension of the electric machine (6) being defined by the shaft axis. The electric machine (6) can be cooled by means of a cooling circuit, the latter comprising at least one cooling pipe (3), which extends essentially in the longitudinal direction of the electric machine (6). The cooling circuit comprises a first circular distribution pipe (1) that forms almost a complete circle, which stretches over one plane, the axis of the longitudinal extension of the electric machine (6) being essentially perpendicular to said plane.

Abstract: A radiator for a linear or curved mobile motor for removing the thermal distortion of a mover and a transporting member of a linear or curved mobile motor, and a high-accuracy, high-reliability linear or curved mobile motor using it. The linear or curved mobile motor includes a field pole having a plurality of permanent magnets with different magnetic poles arranged alternately along a field yoke, and an armature arranged opposite to the field pole via a magnetic gap and formed by winding a single or a plurality of coils around a core. The field pole is used as a stator and the armature being used as a mover that is relatively moved along the longitudinal direction of the stator.

Abstract: An electric motor cooling system is provided that includes a housing and first and second cooling sources that are different from one another respectively to provide first and second cooling flows. A stator is mounted in the housing and receives the first cooling flow. A rotor is rotatable relative to the stator and receives the second cooling flow. In the examples, the housing supports a journal bearing upon which the rotor is supported, and the second cooling flows through the journal bearing. The first cooling flow is provided by a low pressure source such as ram air, and the second cooling flow is provided by high pressure source such as bleed air, for example. A circumferential gap is provided between the rotor and stator. In one example, a seal is arranged between the housing and a stator for providing a cavity in fluid communication with the journal bearing and the gap. The cooling flow from the journal bearing passes through the cavity and into the gap for cooling the rotor.

Abstract: A housing for an external rotor with a side wall; an end cover directly connected to the side wall; a cavity formed between the side wall and the end cover; a plurality of openings formed in the side wall; a plurality of wind wheels; a plurality of air inlets, each of the air inlets disposed one between adjacent wind wheels; a base disposed at the center of the end cover and connected to the side wall via the wind wheels; and a center hole disposed at the center of the base, the center hole for forming connection to a drive shaft of the external rotor. An external rotor with the housing, a magnetic conductive housing; and a plurality of magnetic tiles.

Abstract: A lamination has at least one spacing strip which is formed by cutting out sheet-metal pieces from a metal sheet in order to define an inner boundary and an outer boundary of the lamination. A cut line is made in the metal sheet to define a contour for a spacing strip which is bent out of the main plane of the lamination.

Abstract: A driving apparatus includes: a rotating electrical machine; an inverter capable of supplying electric power to the rotating electrical machine; an electrical device connected to the inverter; a containing case capable of containing the rotating electrical machine, the inverter, and the electrical device; and a cooling coolant circulation circuit, distributing cooling coolant capable of cooling the inverter and the electrical device, which allows the inverter to be cooled at an upstream side relative to the electrical device in a direction in which the cooling coolant is distributed.

Abstract: In order to achieve the above object, according to one aspect of the present invention, there is provided a magnetoelectric generator including: a flywheel rotating around an axis of rotation; a plurality of magnets disposed on an inner peripheral surface of the flywheel and rotating together with the flywheel; a stator core disposed radially inside the magnets, the stator core being constituted by stacking a plurality of thin steel sheets and having: an annulus portion; and a plurality of teeth projecting radially outward from the annulus portion; and a generating coil configured by winding conducting wire onto the teeth, wherein: a coolant aperture through which a coolant passes is formed on the annulus portion so as to penetrate through the thin steel sheets in a direction of lamination.

Abstract: The housing of an electrical machine should, despite efficient cooling, be provided with a more compact design. To this end, the invention provides that the cooling ducts (2) of a housing (1), which is preferably provided in the form of an aluminum extruded profile, are left open toward the inside. The inner walls of the cooling ducts (2) are then formed by an inserted stator pack (4). This enables the corner areas of the housing to be kept free for assembly and the reduction of material for manufacturing the housing (1). In addition, due to the open cooling air ducts (2), thin wall thicknesses in the profile and thus small motor dimensions while simultaneously having a large cooling duct cross-section can be realized.

Abstract: The present invention provides a stator assembly for an electromechanical hybrid transmission. The stator assembly is generally annular and defines a centrally located rotor aperture configured to accommodate a rotor. The stator assembly includes a stator core having a plurality of radially inwardly extending stator teeth, and a stator wire wound around each of the stator teeth to form a plurality of stator coils. Epoxy resin is applied between each pair of adjacent stator teeth. The epoxy resin defines a plurality of stator cooling channels located in close proximity to the stator coils, and a plurality of rotor cooling channels located in close proximity to the rotor aperture. A cooling medium is disposed within the stator cooling channels and the rotor cooling channels such that the stator coils and a later assembled rotor can be cooled.

Abstract: A vehicle motor system includes a motor that receives cooling fluid flow from two different cooling sources. A control, such as a valve, selectively changes the cooling flow between the two cooling sources in response to an operational state of the vehicle.

Abstract: In a rotor of a rotary-electric machine, in order to improve a cooling performance of a rotor winding on an end portion of the rotor in an axial direction, the rotor winding being held by a retaining ring of the rotor winding formed by laminating conductors in slots of a rotor iron core extending in an axial direction and having slots formed at predetermined intervals in a peripheral direction, ventilation channels through which cooling air flows are formed in the surfaces of the conductors along a longitudinal direction. The ventilation channels have air inlet holes which guide the cooling air and exhaust holes which exhaust the cooling air, the conductors are laminated to constitute the rotor winding, and the conductors include openings of the air inlet holes in bottoms of the conductors on a side opposite to a side on which the ventilation channels are formed.

Abstract: A motor control apparatus includes a motor, and a control system board supporting a control circuit to control the motor. The apparatus may further include a power system board supporting a power supply circuit to supply power to the motor. The control system board includes a first board portion facing in a direction along a rotation axis of the motor, and a second board portion extending radially from the first board portion.

Abstract: The invention relates to a stator (2), in particular for a housing-less electrical machine (1), wherein substantially axially running cooling channels (3, 13) are located in the stator (2), into which channels cooling pipes (4, 6, 7) can be inserted and, at least in sections, means are provided which, by means of deformation of the cooling channels (3, 13), cause the cooling pipes (4, 6, 7) to be pressed against the cooling channel (3, 13) on the side facing the heat sources of the electrical machine (1); efficient liquid cooling is therefore provided.

Abstract: In a slowly-running electric machine, such as a bulb turbine generator, air circulation for cooling is supplied by externally driven fans. A cooling device is mounted on the pressure or the suction side of the fan and the rotor and the stator are mounted on the suction side of the fan.

Abstract: A cooling system for an electrical motor or generator includes a first cooling loop, a second cooling loop, and a heat exchange system. The first cooling loop may extract heat from an iron stack and winding of the electrical motor or generator. The second cooling loop may extract heat from end turns of the stator winding, the rotor, and the bearings independently from and simultaneously to the first cooling loop. At least the first cooling loop may pass through the heat exchange system. A liquid coolant may circulate in the first cooling loop and a compressed gas, such as compressed air or compressed refrigerant in vapor form, may circulate in the second cooling loop. The cooling system and method for an electrical motor or generator may be suitable for, but not limited to, applications in the aircraft and aerospace industries, such as driving a cabin air compressor of an aircraft.

Abstract: An electrical submersible well pump assembly has upper and lower motors that are filled with oil. During installation in a well, the upper motor lowers into engagement with the lower motor. The drive shafts of the motors have splined ends that engage each other within a central cavity. A vent port leads from the central cavity to the exterior for venting any trapped air located within the central cavity.

Abstract: A rotating electrical machine includes: a rotor comprising a rotor core and a field winding wound round the rotor core; and a stator comprising a stator core and a stator winding wound round the stator core. The stator is arranged in opposition to the rotor with a predetermined spacing therebetween. the stator core is formed by punching a split piece, which comprises teeth for insertion of the stator winding thereinto and a core back on an outer periphery thereof, from a magnetic steel sheet, and laminating a plurality of those circular configurations in an axial direction, in which a plurality of the split pieces are arranged in a circle in a circumferential direction. The stator core has magnetic steel sheets, which are different in magnetic permeability in a diametrical direction, laminated at an axial end region of and in an axial central region of the stator core.

Abstract: A vent plate for a rotor of a motor core includes a hub, a plurality of spokes extending from the hub and a plurality of coffin portions each having a coffin bore extending therethrough and at least one of which is connected with a spoke. The coffin portions may each be radially spaced from, and circumferentially spaced about the hub and wherein each coffin portion comprises an outer radial end, and a connecting ring which extends about the periphery of the coffin portions. The connecting ring may engage each outer radial end. In another embodiment of the present invention, a method of making a rotor for an electric motor is also presented.

Abstract: A gas-cooled generator has a rotor rotatable about an axis, a stator surrounding the rotor concentrically and a rotating exciter connected to the rotor. The stator, rotor and exciter are arranged along the axis on a common base frame. A first cooler configured to cool the rotor and stator and second cooler configured to cool the exciter are connected to one another for the exchange of cooling gas via the base frame. At least one tube running in the base frame provides the connection between the first and second coolers.

Abstract: Disclosed herein is a motor and a washing machine with the same mounted therein. The motor includes a rotor cup having cooling-holes and lower blades formed at the bottom part thereof. The cooling-holes and lower blades are arranged such that each of the cooling-holes and lower blades is at a prescribed angle to the radial direction of the rotor cup so that the volume of blown air is increased, and thus a blowing force is also increased. The rotor cup is provided at the lower part of the circumference thereof with vents for allowing the air introduced into the inside of the rotor cup to be discharged to the outside therethrough. The rotor is provided at the upper side thereof with backward type upper blades so that the upper part of the motor is separately cooled, whereby cooling efficiency of the motor is improved.

Abstract: A coolable housing shell for an electric machine, which is produced as a cast part, accommodates a concentric interior rotor/stator arrangement, coils, and end windings, and comprises a clear, open, through passage that is embodied in a symmetric, concentric, and/or coaxial manner relative to an imaginary axis of rotation of the machine. Said housing shell is interspersed with one or several cooling channels so as to form a coolant circuit. The inner surfaces of the shell and the inner walls of the channel/s have a coating via a cathodic dipping varnish method.

Abstract: Winding end turns in an electric machine are cooled by a coolant. Cooling is improved by redirecting the coolant generally tangentially through the winding end turns to improve heat transfer between coolant and windings.

Abstract: A redundant cooling device, for an electrical submarine drive motor, includes a first cooling circuit and a second cooling circuit, by which thermal energy may be removed from the electric submarine drive motor. A high degree of operational security and redundancy may be provided, whereby the coolant in the first cooling circuit and the second cooling circuit flow counter-currently through a stator cooling circuit in the region of the electrical submarine drive motor.

Abstract: A rotating electric machine is provided that includes a rotating portion including a rotating shaft, a housing enclosing at least a part of the rotating shaft, and a stator coil accommodated in the housing. A static coolant supply portion supplies coolant to the stator coil from the outside of the stator coil in a radial direction of the rotating shaft. A rotating coolant supply portion supplies coolant to the stator coil from the inside of the stator coil in the radial direction of the rotating shaft. A guide portion is provided in the housing and extends toward the inner surface of the stator coil in the radial direction of the rotating shaft. The guide portion has a through hole through which coolant flows.

Abstract: A rotating electric machine for vehicles is capable of improving a cooling performance of switching elements forming an inverter module, and small-sizing the entire rotating electric machine. The rotating electric machine includes: a stator; a rotor, a cooling fan; a front bracket and a rear bracket; and a cover; and in which a pair of switching elements are disposed axially adjacent to each other between the rear bracket and the cover; a ventilation hole for sucking an outside air is formed on an axial wall of the cover; and by rotation of the cooling fan, the outside air flows from the ventilation hole with respect to the switching elements, and goes through a suction port and is discharged through a discharge port.

Abstract: A brush system for an electric drive unit has a base to which brush system elements are fastened. Strip conductors via which required electrical connections are established are also provided on the base. Furthermore, a flat resistor that is disposed in a resistor housing is inserted into the brush system . The resistor housing is made of a thermally conductive material while being provided with air passage holes.

Abstract: A cooling jacket for an electric motor includes a plurality of jacket portions that are attached to each other to surround a motor stator. Each jacket portion is an extruded component that includes an outer peripheral wall and an inner peripheral wall spaced inwardly from the outer peripheral wall to form a cooling space between the inner and the outer peripheral walls. A plurality of connecting walls extends between the inner and the outer peripheral walls. The connecting walls cooperate with each other to define a plurality of discrete cooling passages within the cooling space of each jacket portion. First and second end caps are mounted to the plurality of jacket portions to enclose the plurality of discrete cooling passages such that a continuous cooling loop is provided through the plurality of jacket portions and the first and second end caps.

Abstract: A laminated core for a motor includes a plurality of laminations each of which are disposed in a non-spaced relation to an adjacent lamination and each of which have a disc-like configuration and wherein the plurality of laminations are each dimensioned and configured to provide for a flow of a cooling fluid traveling in a radial direction to a rotational axis of the motor. A method of cooling a motor is also presented.