Abstract: An electric machine rotor includes a core, magnets, and a resin. The core defines pockets. The core defines notches extending from outer ends of each pocket. The core defines cavities each extending between inner ends of and connecting two of the pockets. The magnets are disposed within each of the pockets. The resin is disposed within each pocket and each cavity. The resin encases each magnet and secures each magnet to at least one of the plates. The gaskets are each disposed along an outer end of each pocket. The gaskets are configured to retain the resin within the pockets and the cavities. The gaskets are also configured to isolate the resin from the notches.

Abstract: A method for manufacturing magnetic circuit loops for a multi-phase transformer from a magnetic strip including: a) providing a magnetic strip of constant width in a roll wound around a first circular mandrel and extending along a longitudinal axis; b) cutting the roll into a first and a second half-roll each having a longitudinal axis comprising a respective boundary surface formed once it is separated from the other half-roll, the roll being cut slantwise at an angle ? relative to the longitudinal axis, such that the first half-roll constitutes a first loop having its boundary surface outwardly oriented relative to its longitudinal axis, while the boundary surface of the second half-roll is oriented opposite to the boundary surface of the first half-roll; c) aligning the first and second half-rolls to form two loops, including at least one sub-step of reversely unwinding and rewinding the second half-roll on a mandrel.

Abstract: A protection apparatus and a brushless motor system reduce costs of the brushless motor system and ensure normal operation of a brushless motor. The protection apparatus includes a demagnetization apparatus and a control apparatus. The demagnetization apparatus is configured to be bridged between a rectifier circuit and an excitation winding, and is configured to consume, when the brushless motor system is faulty, excess electric energy generated on the excitation winding. The control apparatus is configured to separately connect to an excitation power supply circuit and a controller; and is configured to detect electrical parameters of an input terminal and an output terminal of the excitation power supply circuit, and when determining that the electrical parameters exceed a preset threshold, generate an alarm to the controller and adjust the output electrical parameter of the excitation power supply circuit.

Abstract: The invention relates to a turbine engine module, comprising: —a fan shaft (6), —a power shaft (15) rotating the fan shaft via a speed reducer (21) arranged in a lubrication chamber (22), —a lubrication system (50) for the speed reducer (21) having a main circuit (51), which is closed, for supplying the lubrication chamber, and an auxiliary circuit (60), which is closed, for supplying the lubrication chamber when the main circuit is inactive, the auxiliary circuit comprising an auxiliary pump (61) driven by an electric motor (63), and —an electric machine (65) configured to power the electric motor (63), the electric machine having a rotor connected to the fan shaft in order to be rotated and a stator mounted on a stationary member at least partially supporting the electric machine.

Abstract: A motor rotor includes a stationary portion, a coil and a rotating portion. The stationary portion has a first surface, a second surface surrounding the first surface and a space communicated between the first surface and the second surface. The coil locates in the space. The rotating portion includes some first fan-shaped rotating pieces and some second fan-shaped rotating pieces. Each first rotating piece has a first short edge, a first long edge opposite to the first short edge and a first corresponding surface adjacent to the first short edge and aligning with the first surface. The second fan-shaped rotating pieces and the first fan-shaped rotating pieces are alternately arranged. Each second rotating piece has a second short edge, a second long edge opposite to the second short edge and a second corresponding surface adjacent to the second short edge and aligning with the second surface.

Abstract: A vehicle brushless alternator assembly comprising: a claw pole rotor assembly having a pair of opposing pole pieces, the rotor defining an axis of rotation, each of the pole pieces having a plurality of circumferentially spaced pole fingers extending axially, the pole fingers of the rotor alternating between north and south magnetic polarities upon energization of the field coil; a cylindrical stator comprising armature enveloping the magnetic claw poles, the stator arranged coaxially relative to the drive shaft; a field coil structured to be positioned coaxially within an internal cavity of said rotor to arrange the field coil in a spaced apart relationship relative to internal walls defining the internal cavity of the said rotor; and a housing assembly surrounding said cylindrical stator with the drive shaft being supported by the housing assembly wherein the field coil is fixedly mounted to the housing assembly.

Abstract: An apparatus has a plurality of poles facing an air gap, and the poles are configured to generate a magnetic field in the air gap. The poles include a group of unchanged poles and a group of reversible poles, where a polarity of each reversible pole is configured to be changed during an operation mode, and after the polarity has been changed, each reversible pole and at least an adjacent unchanged pole in effect merged into one augmented pole, such that the pole number of the magnetic field in the air gap is changed.

Abstract: A rotor for a disc permanent magnet motor, includes: a first rotor core; a second rotor core; and a plurality of magnetic tiles. The first rotor core includes a first annular ring and a plurality of first magnetic blocks protruding at intervals from an outer side of the first annular ring in a circumferential direction, and a first groove is formed between every two adjacent first magnetic blocks. The second rotor core includes a second annular ring and a plurality of second magnetic blocks protruding at intervals from an outer side of the second annular ring in a circumferential direction, and a second groove is formed between every two adjacent second magnetic blocks. The first rotor core and the second rotor core are axially embedded with each other. The first magnetic blocks are embedded in the second grooves. The second magnetic blocks are embedded in the first grooves.

Abstract: The embodiments of the present invention disclose a rotating electrical machine. The rotating electrical machine comprises a stator and a rotor, the rotor comprises a rotating shaft and magnetic poles fixed to the rotating shaft, a chamfer being provided on the radial outer surface of at least one of the magnetic poles; the stator comprises a stator core, the stator core being located on one side of the magnetic poles far from the rotating shaft, the chamfer overlapping with the stator core in the axial direction of the rotor.

Abstract: A rotor for a rotary electric machine that rotates with respect to an axis of rotation, includes a body and permanent magnets. The body includes a plurality of rotor teeth defining cavities in which the permanent magnets are accommodated, each rotor tooth including at least one holding part. The holding part includes a holding portion having a holding face against which a radially outermost face of the permanent magnet bears, a wing remote from the radially outermost face and in the circumferential continuation of the holding portion.

Abstract: Various embodiments of the teachings herein include an electric motor. In some embodiments, the motor includes: a stator; and a moving component comprising an iron-based soft-magnetic structural material including crystallites of a ferromagnetic iron-based alloy separated by grain boundaries, wherein there is interlayer-free contact between the crystallites at grain boundaries. The structural material comprises ceramic fibers. A content of the ceramic fibers is between 0.2% and 10% by volume. An aspect ratio of the ceramic fibers is less than 0.1.

Abstract: An electric machine, which may operate as an electric motor or generator, that address performance and manufacturing shortcomings in various motor design approaches particularly transverse flux, axial and radial flux motors with higher torque, higher RPM, and lower core losses and lower cogging. An exemplary electric machine incorporates shape monolithic components such as the armature teeth or connector ring, armature ring, concentrator teeth or concentrator ring formed by Soft metal Composite (SMC). Magnets may be configured between the concentrator teeth to form a magnet ring having a plurality of magnetic poles. The armature flux paths may be shared between phases. The air gaps may be axial and extend between armature teeth and concentrator teeth and the magnetic poles configured between the concentrator teeth. The armature, concentrator teeth and magnetic poles may extend radially and alternate along the axial axis of the electric machine, producing axial and/or radial airgaps.

Abstract: A rotor includes a rotor core configured by laminated steel plates and a magnet insertion hole extending along an axial direction of the rotor core, with a resin interposed between a permanent magnet placed in the magnet insertion hole and an inner wall face of the magnet insertion hole. In a manufacturing method for this rotor, in a first process, the permanent magnet and the resin are integrated together to manufacture a resin-coated permanent magnet. Next, in a second process, the resin-coated permanent magnet is press-fitted into the magnet insertion hole. Next, in a third process, the post-second-process rotor core is heated to a temperature that is at least the temperature at which the resin softens. Next, in a fourth process, the post-third process rotor core is cooled.

Abstract: A rotating electrical machine case includes a case body having a cylindrical shape surrounding a rotating electrical machine and a side wall portion provided on at least one end side of the case body in a rotation axis direction. The side wall portion is provided with a plurality of ribs extending in a radial direction when viewed from the rotation axis direction of a rotating electrical machine and the plurality of ribs include ribs having different circumferential widths.

Abstract: A rotor (1) for an electric machine (2) includes a rotor body with multiple poles. Multiple flux barriers (6.1, 6.2, 6.3, 6.4) are formed in the interior of the rotor body. The rotor (1) further includes at least one sensor element (3) configured for detecting at least one condition variable of the rotor (1), a signal processing unit (4) connected to the at least one sensor element (3) and configured for generating measured data from the detected condition variable of the rotor (1) and transmitting the measured data to a control device (5), and at least one induction coil (7) that includes at least one electrical conductor (8), is arranged in at least one flux barrier (6.1) of the rotor (1), and is configured for generating electrical energy from a leakage magnetic field in this flux barrier (6.1).

Abstract: An electric machine stator includes a stator core having annular stator laminations arranged in a stack with each lamination includes a plurality of stator teeth, adjacent teeth defining corresponding tooth slots on an inner periphery. Each stator tooth slot includes a winding area and an opening area leading to the inner periphery and including a first side and a second side. The first side and the second side each have an inner and outer tooth top, the inner and outer tooth top of the first side and the inner and outer tooth top of the second side are respectively symmetrical with respect to a center line of the opening area, and the first side and the second side are asymmetric with respect to the center line.

Abstract: The present invention relates to an electric machine for an aircraft, comprising a stator and a rotor that is rotationally mobile with respect to the stator, the rotor or the stator comprising a plurality of permanent magnets, the machine comprising a device for demagnetising a permanent magnet, suitable for achieving a temporary increase in the temperature of the permanent magnet, in order to limit, during the temporary increase in temperature, an exciting magnetic flux generated by the permanent magnet. The present invention furthermore relates to an assembly comprising an assembly comprising such an electric machine and a hot-fluid source suitable for delivering hot fluid to the demagnetising device of the electric machine. The hot-fluid source may be a gas stream of a turbine engine.

Abstract: The present invention relates to an electric machine for an aircraft, comprising a stator and a rotor that is rotationally mobile with respect to the stator, the rotor or the stator comprising a plurality of permanent magnets, the machine comprising a device for demagnetising a permanent magnet, suitable for achieving a temporary increase in the temperature of the permanent magnet, in order to limit, during the temporary increase in temperature, an exciting magnetic flux generated by the permanent magnet. The present invention furthermore relates to an assembly comprising an assembly comprising such an electric machine and a hot-fluid source suitable for delivering hot fluid to the demagnetising device of the electric machine. The hot-fluid source may be a gas stream of a turbine engine.

Abstract: A stator includes a cylindrical shaft extending in an axial direction, annular portions positioned side by side in the axial direction radially outside the shaft and extending in a radial direction, pole teeth extending in the axial direction from a radially outer end portion of each of the annular portions, and one or more coils between the annular portions adjacent to each other in the axial direction and wound around the shaft. The shaft includes at least one slit recessed radially inward from an outer peripheral surface of the shaft and extending along the axial direction. A portion of the at least one slit is radially inside the annular portion. A lead wire of the coil is accommodated in the at least one slit.

Abstract: In order to obtain an electric rotating machine which can improve rotating machine efficiency by suppressing a harmonic component of rotor magnetomotive force and reducing harmonic core loss, a permanent magnet is furnished in some of inter-magnetic pole portions, the inter-magnetic pole portion being formed between a first claw-shaped magnetic pole portion and a second claw-shaped magnetic pole portion; the shapes of a first chamfered portion and a second chamfered portion, which are provided in the inter-magnetic pole portion where the permanent magnet is inserted, differ from those of a first chamfered portion and a second chamfered portion, which are provided in an inter-magnetic pole portion where the permanent magnet is not inserted; and/or the shapes of a first magnetic flux adjusting portion and a second magnetic flux adjusting portion, which are provided in the inter-magnetic pole portion where the permanent magnet is inserted, differ from those of a first magnetic flux adjusting portion and a second

Abstract: The present invention comprises a rotor core and a cover disposed on the rotor core, wherein the cover includes a body part and a plurality of wing parts formed on the body part, the wing part is disposed between an outer boundary, which is a circular curve, and an inner boundary, which is a circular curve, the wing part includes an inner part and an outer part, the inner part forms a first inlet angle at a first point and forms a first outlet angle at a second point, the outer part forms a second inlet angle at a second point and forms a second outlet angle at a third point, the first point is positioned at the inner boundary, the second point is positioned at an intermediate boundary, which is a circular curve, disposed between the outer boundary and the inner boundary, and the third point can be positioned at the outer boundary.

Abstract: A motor includes a rotary shaft having at least one spray hole for spraying a cooling fluid, a rotor installed on the rotary shaft, and a stator surrounding an outer circumference of the rotor, wherein the rotor includes a plurality of rotor blocks arranged on an outer circumference of the rotary shaft. Each of the rotor blocks may include a magnet installed at a rotor core and a cooling guide may be disposed between a pair of the plurality of rotor blocks and form a spray flow path for guiding a cooling fluid that has passed through the spray hole to be sprayed in a direction toward an inner circumference of the stator.

Abstract: A rotating electrical machine that includes a rotor core having a permanent magnet placed therein; a stator core placed so as to face the rotor core in a radial direction and including a plurality of teeth and a plurality of slots each located between adjacent ones of the teeth; and a plurality of coils placed in the slots of the stator core.

Abstract: An electromagnetic array includes a substrate defined by a plurality of regions. Each region includes a plurality of conductors arranged in a varying configuration such that, upon application of an electric current, each conductor of the plurality of conductors generates a magnetic field in a polarity that is other than a polarity of a corresponding magnetic field of at least one adjacent conductor. Each region includes a first surface and a second surface opposite the first surface, the first surface having a strong magnetic field relative to a weak magnetic field associated with the second surface in response to the electric current. A first region is adjacent to another region, and configured such that a polarity of the strong magnetic field associated with the first region is in a polarity other than a polarity of the strong magnetic field associated with the at least one other region.

Abstract: A stator in which the height of a coil end of a stator winding can be lowered is provided, and an electric rotating machine including such a stator is provided. In a stator of an electric rotating machine including a stator winding including neutral lines and output lines, the neutral lines are configured to include crawling portion extending circumferentially in the upper portion of a coil at the coil end, and the crawling portion includes an axial stepped portion. The output lines are configured to pass under the axial stepped portion in at least one location of three phases.

Abstract: In a rotating electric machine, a rotor includes a field core, a field coil and permanent magnets. The field core has a boss portion and claw-shaped magnetic pole portions. Each of the permanent magnets is arranged between one circumferentially-adjacent pair of the claw-shaped magnetic pole portions. A d-axis magnetic circuit and a magnet magnetic circuit share a magnetic path in at least parts thereof. Along the d-axis magnetic circuit, magnetic flux generated by the magnetomotive force of the field coil flows through the boss portion, one pair of the claw-shaped magnetic pole portions and a stator core. Along the magnet magnetic circuit, magnetic flux generated by the magnetic force of a corresponding one of the permanent magnets flows. The relationship of Ast>Af is satisfied, where Ast is a magnetic path cross-sectional area of a stator and Af is a magnetic path cross-sectional area of the rotor.

Abstract: A claw pole member for an electric machine including a plurality of claw pole segments. Each of the plurality of claw pole segments includes a radial projecting member, an axial outer surface extending to a cantilevered end portion, and an axial inner surface extending axially outwardly of the radial projecting member to a cantilevered end section. A first side surface extends between the axial outer surface and the axial inner surface from the radial projecting member to the cantilevered end portion and the cantilevered end section, and a second side surface extends between the axial outer surface and the axial inner surface from the radial projecting member to the cantilevered end portion and the cantilevered end section. The first and second side surfaces define a taper of the claw pole segment. Each of the first and second side surfaces includes a recessed portion that extends into the claw pole segment.

Abstract: A rotating electric machine includes a stator and a rotor. The stator includes a stator core and an armature coil wound on the stator core. The rotor is arranged radially inside the stator to radially face the stator. The rotor includes: a field core having a plurality of magnetic pole portions for respectively forming a plurality of magnetic poles the polarities of which are alternately different in a circumferential direction; a field coil wound on the field core; and a tubular short-circuiting member that is arranged radially outside the magnetic pole portions to cover radially outer surfaces of the magnetic pole portions and magnetically connects each circumferentially-adjacent pair of the magnetic pole portions. Moreover, two axial end portions of the short-circuiting member protrude axially outward respectively from two axial ends of the stator core.

Abstract: First side surfaces 22bb of first magnetic pole portions 22b and second side surfaces 23bb of second magnetic pole portions 23b that face each other in a circumferential direction are configured into parallel flat surfaces, first circumferentially tapered portions 25b are formed on circumferential shoulder portions of the first magnetic pole portions 22b, second circumferentially tapered portions 26b are formed on circumferential shoulder portions of the second magnetic pole portions 23b, and portions of the first and second circumferentially tapered portions 25b and 26b enter a region 24 in which the first side surfaces 22bb and the second side surfaces 23bb that face each other in the circumferential direction overlap when viewed from a direction that is perpendicular to the first side surfaces 22bb and the second side surfaces 23bb.

Abstract: A rotor of a rotating electric machine includes a field core having a cylindrical boss portion, and a plurality of claw-shaped magnetic pole portions that are arranged on the outer side of the boss portion and form poles of alternately different polarities in the circumferential direction, a field winding that is wound around the outer periphery of the boss portion and generates a magnetomotive force by energization, a permanent magnet disposed between the circumferentially adjacent claw-shaped magnetic pole portions so as to have its easy axis of magnetization oriented in the circumferential direction and have its polarity coincide with the polarity of the claw-shaped magnetic pole portions which alternately appears by excitation, and a magnetic flux short circuit member having a short circuit portion that magnetically connects the claw-shaped magnetic pole portions circumferentially arranged to have different polarities.

Abstract: A rotor of a motor includes first and second rotor cores, a field magnet, and a commutator magnet. The first and second rotor cores each include a core base and a plurality of claw poles. The claw poles of the first rotor core and the claw poles of the second rotor core are alternately arranged in a circumferential direction. The field magnet is located between the core bases. The field magnet is magnetized in an axial direction so that the claw poles of the first rotor core and the claw poles of the second rotor core function as different magnetic poles in the circumferential direction. The commutator magnet is located on an outer circumference of the field magnet around the claw poles. The commutator magnet is magnetized so that surfaces having the same polarity face each other between the claw poles and the commutator magnet.

Abstract: The present invention provides a rotor assembly comprising: a rotor including a core body, and a plurality of protrusion parts coupled to the core body so as to be detachable therefrom; and an insulator including a body encompassing the protrusion parts, and blades formed to protrude from the upper and lower surfaces of the body, thereby providing an advantageous effect of reducing the number of parts to be manufactured such that manufacturing costs and manufacturing processes can be reduced.

Abstract: In a rotating electrical machine apparatus, a rotor portion provided in a cylindrical portion and a stator portion provided in a recessed portion in which the rotor portion is housed are aligned along the rotation axis of a rim such that a force is generated in a direction opposite to the direction of a load that acts along the rotation axis of the rim of loads that act on the rim following rotation of a blade.

Abstract: A rotary device comprises a frame with a guide for flowing medium, a rotor with a number of blades, whereby a relation is obtained between the flowing medium and the rotation of the rotor, and energy converting means, the one part of which is connected to the frame and the other part to the rotor. The device has the feature that the end zones of the blades are connected to a ring, the ring has a radial section with the shape of an isosceles triangle or trapezium, the medium guide has an encircling recess, the form of which corresponds to the form of the ring and the ring fits with clearance into the recess, permanent magnets are added to the truncated conical surfaces, electromagnets debouch on both the corresponding surfaces of the recess, this such that the ring and the frame together form an annular induction motor or an electric generator.

Abstract: A rotating electric machine including a stator including a stator core and a stator coil wound around the stator core, and a rotor including a rotor core arranged coaxially and radially in a face-to-face relationship with the stator core and a field coil wound around the rotor core. Both axial end portions of the rotor core project more axially outward than respective axial end faces of the stator core. The rotor core has a cutout surface between one of the axial end faces of the rotor core and an outer peripheral surface of the rotor core. A corner at which the cutout surface and the outer peripheral surface intersect is not more axially outward than either of the axial end faces of the stator core.

Abstract: Cracking and flying around of permanent magnets in a permanent magnet embedded-type rotating electric machine is prevented. Thermally hardening FRP is used as a reinforcement sheet, and the reinforcement sheet is wrapped around the periphery of a permanent magnet and caused to adhere to the surface of the permanent magnet by being thermally hardened. Subsequently, the permanent magnet to which the reinforcement sheet is adhering is embedded in magnet embedding holes of the rotor. The surface of the reinforcement sheet after thermal hardening is in a state of not being attached to the inner wall surface of the magnet embedding holes. Consequently, no stress caused by the difference between the linear expansion coefficients of the rotor and permanent magnets acts on the permanent magnets when the temperature of the rotor rises, and cracking of the permanent magnets can thus be prevented.

Abstract: Rotor an alternator or alternator-starter type comprises two pole wheels including a series of axial claws having a generally trapezoidal shape that extend axially from the edge of the outer radial end of one pole wheel towards the other pole wheel. The rotor comprises an interpolar magnetic assembly in the interpolar space between a first claw of a first pole wheel and a second claw of a second pole wheel. The magnetic assembly comprises two first faces defined by first and second free ends. A side face is also provided, such that the adjacent side face faces same, the side face comprising third and fourth opposing ends between which the magnet is in contact. The side faces of the first and second claws define a reduction in cross-section from one of the free ends of the magnetic assembly extending towards a claw head end along a side facet.

Abstract: The present invention concerns a protective cover (400) designed to cover power, filtering and control modules of an electronic assembly for a rotating electric machine for a motor vehicle.

Abstract: A rotating electrical machine, in particular to an alternator (A) or to an alternator-starter, for a motor vehicle, comprising: a rotor (2) supporting a front fan (23) at the front and a rear fan (24) at the rear, the rotor being rotatable about an axis of rotation, a stator (4) comprising a stator body and at least one winding placed on the stator body, the winding forming front and rear chignons on either side of the stator body, and a casing (1) in which the stator and the rotor are placed.

Abstract: Method for making an electrical machine (10), especially a three-phase generator for vehicles, that comprises a stator (16) and a rotor (20). The rotor (20) comprises a first and a second claw pole (22, 23) from which claw pole fingers (24) respectively extend in the axial direction from claw pole roots (60). A centering point (74) for a tool is located on a rear radius (72) of the claw pole roots (60).

Abstract: A coil bobbin for a brushless alternator includes an integrally formed one piece bobbin body that has a first end, a second end and a central passage that extends from the first end to the second end. A coil support portion of the body is positioned at the first end and has a first cylinder of a first diameter bordered by flanges which extend past the first cylinder. A base portion of the body is positioned at the second end. A bobbin extension portion is positioned between the coil support portion and the base portion. The bobbin extension portion includes a second cylinder of a second diameter which is smaller than the first diameter.

Abstract: A coil includes a wound body and a resin covering. The wound body is configured by winding a conductor. The wound body is pressure-molded. The resin covering covers a surface of the wound body.

Abstract: A self-cooled motor includes a rotor holder including a cylindrical portion and a bottom plate portion, and configured to rotate with a shaft; a housing supporting a bearing and a stator; and at least one blade rotating together with the shaft to generate an air current traveling radially outward, at least a portion of each blade being located axially below the bottom plate portion of the rotor holder. The housing includes a base portion axially above the rotor holder and an outlet edge portion in the housing and between adjacent ones of the attachment portions, and configured to define a main air outlet axially below, the main air outlet connecting a space radially inside the housing and a space radially outside the housing with each other. The bottom plate portion of the rotor holder includes a rotor vent hole passing therethrough in an axial direction.

Abstract: A rotor drive for a tail rotor of a helicopter is provided. The system includes a stator and a rotor mounted to the stator with a rotatable central carrier. Rotor blades are radially attached to the rotatable central carrier and each of the rotor blades is pivotable about their respective radial central axis for variation of blade pitch. At least one permanent magnet is provided on each rotor blade. A plurality of electromagnets is provided on the stator close enough to allow inductive interaction between the plurality of electromagnets and the at least one permanent magnet on each rotor blade. The permanent magnets are offset from the radial central axis in a direction perpendicular to the rotation plane for individual pitch control of the rotor blades by individual control of electric supply to the electromagnets.

Abstract: A rotor includes a rotating shaft and a pair of first and second pole cores fixed on the rotating shaft. Each of the first and second pole cores includes a plurality of magnetic pole claws each having a root portion and a distal end. Each of the magnetic pole claws are configured to have a constant circumferential width at the root portion and taper from the root portion to the distal end. The magnetic pole claws of the first pole core are arranged alternately with those of the second pole core in a circumferential direction of the rotating shaft. Further, at least part of the magnetic pole claws of the first and second pole cores each have at least one chamfered portion formed at a circumferential end of the root portion of the magnetic pole claw so as to extend parallel to an axial direction of the rotating shaft.

Abstract: A rotor is provided for a rotating electric machine. The rotor includes a magnetic pole core and a cooling fan. The cooling fan includes a base plate laser-welded to an axial end face of the magnetic pole core and a plurality of fan blades extending from the base plate. Further, in the rotor, a weld formed between the base plate of the cooling fan and the magnetic pole core has a pair of open ends.

Abstract: Propulsion unit (11) for propulsion and maneuvering of a maritime vessel, which includes a nozzle (12) wherein a propeller section (13, 13a) is arranged, which propeller section (13, 13a) is electrically or hydraulically driven, which propulsion unit (11) includes a fastening device (16) arranged for arrangement to hull of the vessel or to a steering device arranged for steering and/or moving the propulsion unit (11). The fastening device (16) is formed by two stems (17a-b) extending in parallel or laterally reversed about an vertical central axis from an upper surface of the nozzle (12) of the propulsion unit, which stems (17a-b) end in a fixing flange (18) for thereby providing an opening (19) which provides the propulsion unit (11) with improved hydrodynamic performance.

Abstract: A cooling jacket (14) for cooling an electric motor, in particular a stator (23), wherein a first spiral line (16) for transporting a coolant is formed at least partially on the cooling jacket (14). The aim of the invention is to provide a cooling system that is optimized in terms of mounting space and ensures axially equalized cooling. This aim is achieved in that a second spiral line (17) for transporting coolant is formed at least partially, and in that based on a common spiral axis R, both spiral lines (16, 17) form an axially integrated double spiral, wherein the first spiral line (16) is an inflow line and the second spiral line (17) is a return flow line. The invention further relates to a deflection unit (12) for the return into the second line (17), which substantially prevents the static pressure from dropping.

Abstract: An electric machine component includes a rotor assembly having a body provided with a number of pole members and a central hub. The body includes at least one mounting member projecting radially outwardly of the central hub. A fan member is mounted to the rotor. The fan member includes a hub portion and a number of fan blades projecting radially outwardly from the hub portion. The fan member includes at least one mounting element extending radially outwardly of the hub portion. The at least one mounting element is configured and disposed to engage with the at least one mounting member to radially and axially constrain the fan member to the rotor.

Abstract: A metal plate is insert-molded into a case so as to be exposed inside a B terminal mounting aperture so as to overlap with a busbar, a B terminal bolt is press-fitted from an opposite side from the busbar into a press-fitting aperture that is formed on the portion of the metal plate that is exposed inside the B terminal mounting aperture, a spacer and a nut are mounted onto a shaft portion of the B terminal bolt, and the nut is electrically connected to the busbar by the busbar being pressed and held between the spacer and the nut by a fastening force from the nut.