Abstract: Provided are a coil, a stator, and a motor that can suppress generation of eddy current in the coil and reduce Joule loss. A coil is formed by connecting a plurality of one-turn regions each including a turn of a conductor to have a helical structure. The conductor is formed by connecting a first member to a second member in a longitudinal direction, and the plurality of one-turn regions include at least in a part thereof the first member.

Abstract: An electric machine configured to convey electromechanical energy, such as through the conversion between electrical power and mechanical power, includes a slot into which is disposed a coil. The slot can be a stator slot having a trapezoidal cross-sectional shape. The coil can have a plurality of turns that, in cross-section, also includes a trapezoidal shape. The turns can be stacked upon each other in a radial direction between the proximal end and the distal end of the stator slot, each turn of the coil having a different cross-sectional area and a different radial height relative to an adjacent turn of the coil. Additionally and/or alternatively, each turn of the coil, except for the turn of the coil located at the distal end of the stator slot, includes a reduced radial height relative to a turn of the coil that is located radially outward from each turn of the coil.

Abstract: A method of manufacturing a coil includes: a step of forming a winding portion extending twisting around an axis along a direction of the axis, the winding portion including a portion in an extending direction of the winding portion, the portion being a deformation allowing portion having a lower rigidity than the other portion; a step of forming an insulation film on the winding portion in the extending direction of the winding portion; and a step of compressing the winding portion on which the insulation film is formed, in the direction of the axis.

Abstract: A rotating electrical machine includes segmented coils respectively disposed in layers aligned in a row in a radial direction inside a slot of a stator core. The segmented coils include first regions having a straight line section disposed inside the slot and a protrusion protruding to the outside of the slot from one end of the straight line section, and second regions extending toward one side in the circumferential direction from the other end of the respective straight line section, such that the position in the radial direction changes. The tip end section of the second region of a first segmented coil disposed in a prescribed layer within a prescribed slot is disposed and connected to be adjacent, in the radial direction, to the tip end section of the first region of a second segmented coil disposed in the prescribed layer within a slot adjacent to the prescribed slot.

Abstract: Stator for an electric machine has a number N?3 of phases, a number P?2 of pole pairs and a hole count q=2, and a stator core, which has two faces and a plurality of slots which are divided into first to L-th layers, where L?4. The shaped conductors form for each phase first to fourth paths and are arranged in 2·P winding zones, and each winding zone is divided into a first and a second sub-winding zone and each sub-winding zone extends over the L layers. The shaped conductors of a respective path are interconnected by connectors, which connect shaped conductors in adjacent winding zones of the same phase in an alternating manner at the first face and the second face of the stator core, to form a series connection with a first end shaped conductor.

Abstract: A stator including a stator core and a winding. A wire of the winding is continuously wound in a wave shape in the circumferential direction, a number of wound layers is 2N, a number of phases is S, a number of poles of each phase winding is 2P. The stator core is formed with 4×S×P slots; the winding per phase per pole includes two wire groups; each wire group has two wires wound in parallel in adjacent slots; the pitches of the wire groups during winding include a normal pitch and a jumper pitch; the normal pitch has alternate first and second pitches; the jumper pitch includes a third pitch and a fourth pitch; each wire group uses one jumper pitch after every P?1 normal pitches in a same layer; and the jumper pitch causes the two wires in a same wire group to be transposed in the circumferential winding direction.

Abstract: A method for reworking a defective welded connection of a hairpin winding for a rotor or stator of an electrical machine, including providing the hairpin winding applied to a winding support. The hairpin winding has at least one conductor formed from multiple conductor sections. The conductor sections of the respective conductor are welded in pairs at a respective welded connection by a first welding method, and at least one of the welded connections is a defective welded connection. The defective welded connection is severed, and the conductor sections to be welded, which were previously connected by the defective welded connection, are connected by way of a connecting method that differs from the first welding method.

Abstract: A stator apparatus includes a stator core and a wave-winding coil. The wave-winding coil includes a flexible conductor defining a first conductor portion and a second conductor portion between a first end and a second end. The first conductor portion is mechanically supported by a first stator slot cluster, a second stator slot cluster, and third stator slot cluster of a stator core such that a primary overhang extends from the first stator slot to the second stator slot and a secondary overhang extends from the second stator slot to the third stator slot. The second conductor portion is mechanically supported by the first stator slot cluster, second stator slot cluster, and third stator slot cluster such that primary and secondary overhangs of the second conductor portion extend over an opposite axial side of the stator core from the first conductor portion.

Abstract: Stator for an electric machine includes a stator core which has an axial end side, and a a plurality of shaped conductors which protrude from the stator core at the end side and which each have, at the end side, at least one end portion having a free end of the shaped conductor. Arrangements of at least two of the end portions are connected to one another in an electrically conductive and mechanical manner in such a way that each arrangement forms a connecting portion which has a first cross-sectional area that lies in a predefined cross-sectional plane and that has corner portions and side portions lying between the corner portions. A plurality of insulation elements each envelop at least one of the connecting portions and are each formed from an electrically insulating material.

Abstract: The invention relates to a stator which may be used within an electric rotating machine and a method for manufacturing a stator. The stator (200) comprises a stator core (100) having a plurality of slots (101, 101a, 101b) arranged in circumferential direction (C) of the stator core (100), a plurality of conductors (102, 103) forming a stator winding, wherein at least a radially outer conductor (102) and a radially inner conductor (103) are arranged along a radial direction (R) of each slot (101). At least one pair of a radially outer conductor (102) of a first slot (101a) and a radially inner conductor (103) of a second slot (101b) circumferentially spaced from the first slot (101a) is electrically connected by a connection bridge (1).

Abstract: A stator includes a stator core having a plurality of slots, and a plurality of segment coils, each of which has an insulating film, the plurality of segment coils each including an inclined portion and a rising portion. the rising portions that are adjacent to each other in a radial direction of the stator core being joined to each other. Each of the plurality of segment coils includes first peeled portions each in which the insulating film facing the circumferential direction of the stator core is peeled in a lengthwise direction, and second peeled portions each in which the insulating film facing the radial direction of the stator core is peeled in the lengthwise direction, and a peeling length of the first peeled portion is longer than a peeling length of the second peeled portion.

Abstract: Disclosed is a stator (2) comprising a stator body (25) having notches (21) formed between teeth (23), electrical conductors (22) being housed in the notches (21), at least one part of the electrical conductors being in the form of a U-shaped pin, each comprising first (22c) and second (22f) axially extending legs in the first (A) and second (R) notches, respectively, at least one of the first (22e) and second (22f) legs of the electrical conductors (22) extending out of the notches via an inclined welding portion, at least one part of the electrical conductors each having a welding portion, innermost with respect to the longitudinal axis of the stator, the innermost welding portions being inclined with the same inclination with respect to the plane perpendicular to the longitudinal axis of the stator.

Abstract: Embodiments of an electric motor are disclosed. In certain embodiments, the motor comprises, a stator, a rotor, and an impeller mechanically coupled to the rotor, the impeller comprising a central shaft having a longitudinal bore, a plurality of blades radially extended from the central shaft, and an engagement cylinder coupling the plurality of blades to the rotor.

Abstract: A stator includes a stator core and a stator winding. An inner wall of the stator core is provided with M winding slots, the M winding slots are uniformly disposed in a circumferential direction of the inner wall of the stator core. The stator winding includes flat wire conductors inserted in the winding slots, N layers of flat wire conductors are disposed in any one of the winding slots, and phase units of a first-phase winding, phase units of a second-phase winding, and phase units of a third-phase winding are sequentially and periodically arranged along the inner wall of the stator core. Each phase winding includes P parallel branches. Any one of the parallel branches connects flat wire conductors of M·N/3P layers.

Abstract: We describe a method and controller for controlling an axial flux machine in which an alternating current supplied to the plurality of coils injects a compensation current to reduce a mechanical resonant component of the rotor. The compensation current is a modulated current component added to at least one of the Quadrature Current (Iq) and Direct Current (Id) components (when the alternating current is represented as a vectored DC component), when the rotor is rotating over one or more ranges of rotational speeds. The modulated current component has an electrical frequency that varies over a range of frequencies between a first frequency and a second frequency depending on the rotational speed of the rotor, the range of frequencies including a frequency that is substantially the same as a fundamental mechanical resonant frequency of the rotor, and having a phase that is out of phase with the fundamental mechanical resonant frequency of the rotor.

Abstract: A rotor of a wound rotor motor/generator comprising a plurality of rotor windings including a line rotor coil and a star rotor coil. The rotor coil couples to an L-conductor having an L-shaped profile such that a portion of the L-conductor extends from the line rotor coil toward the star rotor coil. A line connector bar couples the L-conductor to a rotor lead such that the line rotor coil is electrically coupled to the rotor lead. The star rotor coil couples to an L-support having an L-shaped profile such that a portion of the L-support extends from the star rotor coil toward the line rotor coil. An insulator is positioned between the L-conductor and the L-support to electrically insulate the L-support from the L-conductor. Lastly, an insulating rope couples the L-conductor to the L-support.

Abstract: A coil includes: a strand-wound body configured with stacked n turns of a wound strand that is made of a conductor and has a quadrangular cross-section, where n is a natural number; and an insulating resin covering a surface of the strand-wound body. An i-th turn, where i is an integer and 1?i?n, has a quadrangular ring shape having four side portions, and in the i-th turn, the insulating resin covers a surface of each of the four side portions. In the first to n-th turns, the insulating resin is continuously and integrally formed.

Abstract: A method for applying varnish to a stator of an electric motor includes depositing varnish onto an outer laminate of the stator, accumulating the deposited varnish with a ridge on the outer laminate, and directing the accumulated varnish into a slot of the outer laminate with the ridge.

Abstract: A stator (10) for an axial flux electrical machine (100), an axial flux machine (100) that includes the stator (10), and a method (500) of manufacturing a stator (10) are provided. The conductive coils (12) which form the stator (10) provide a structure which includes spaces (131a, 131b, 131c, 132a, 132b) for flux guides (30), which improves ease of stator manufacture. It also allows for a high number of slots per pole per phase, which provides a more sinusoidal back-EMF.

Abstract: Stator (2) for a rotary electric machine (1), comprising a stator mass (25) comprising slots (21), electrical conductors (22) accommodated in the slots (21) forming a multiphase winding having at least a first phase (a) and a second phase (b), an input electrical conductor (A) of the first phase (a) being located in a first slot (slot number 1), one or more electrical conductors of the second phase (b) being located in a second slot (slot number 2), the second slot immediately following the first slot when going circumferentially around the axis of rotation of the machine, in the direction of flow of the electric current around the axis of rotation of the machine.

Abstract: A winding for an active portion of a rotary electric machine has at least one phase system including a plurality of phases each including a first energizing pin and a second energizing pin each forming a phase input or output. Each energizing pin includes an energizing end that extends out of the slot and each energizing end that forms a phase output being electrically connected to an energizing end that forms a phase input of a different phase, in order to achieve a delta configuration. The winding includes a first set including at least one energizing end forming a phase input and at least one other energizing end forming a phase output, and a second set including at least one energizing end forming a phase input and at least one other energizing end forming a phase output.

Abstract: The present invention provides a stator of a disc-type motor and a winding method thereof. A circle of coil units (20) filled into coil slots (1) are arranged on a disc-shaped stator disc (12); jumper wire slots (10), fly wire slots (3) and jumper wire joint holes (7) are formed in the radial outer sides of the coil slots (1); and the coils are wound, overlapped and filled into the coil slots in a disc shape and are connected with one another in series by connecting wires embedded into the stator disc (12) in the same current direction.

Abstract: A rotating electric machine includes: a field system including a magnet section having a plurality of magnetic poles whose polarities alternate in a circumferential direction; and an armature arranged to face the field system and including a multi-phase armature coil. Either of the field system and the armature is configured as a rotor. The field system also includes a soft-magnetic core having at least one magnet-receiving hole in which the magnet section is received and held. The armature coil has electrical conductor sections arranged at positions facing the field system and at predetermined intervals in the circumferential direction. In the armature, inter-conductor members are provided between the electrical conductor sections in the circumferential direction. The inter-conductor members in each part of the armature corresponding to one magnetic pole are magnetically saturated by magnetic flux from one magnetic pole of the magnet section when the electrical conductor sections are not energized.

Abstract: A stator for an electric machine having a plurality of pins, which are arranged on concentric circles at different distances from a stator center point in slots in the stator, and each concentric circle forms a layer, where four pins in different layers are connected to one another in series and form a winding. A first pin of the winding is located in a first slot in the 4n-3 layer, wherein n is a natural number, a second pin of the winding is located in a second slot in the 4n-2 layer, wherein the second slot is at a first radial distance from the first slot in a first circumferential direction of the stator, a third pin of the winding is located in the first slot in the 4n layer, and a fourth pin of the winding is located in the second slot in the 4n-3 layer.

Abstract: In a motor, a stator includes: a stator core having slots arranged in a circumferential direction; and conductor connection bodies with conductors connected in series and inserted into the slots. A conductor connection body includes: a first portion wave-wound toward one side in the circumferential direction from a first end to a second end; a second portion wave-wound toward the one side in the circumferential direction from a third end to a fourth end; and a folded portion connecting the first and second portions. The first and third ends protrude in an axial direction from different slots in the circumferential direction, and the second and fourth ends protrude in the axial direction from different slots in the circumferential direction. The conductors include a folded conductor that forms a folded portion connecting the second end of the first portion and the fourth end of the second portion.

Abstract: A stator for interacting with magnets carried by a rotor of an electric machine, the stator comprising: an active region arranged to be aligned with the magnets carried by the rotor; a first inactive region and a second inactive region, wherein the first and second inactive regions are separated by the active region; and a slotless phase winding comprising a plurality of conductive elements, wherein each conductive element comprises a conductor provided in an insulating housing, and wherein the slotless phase winding is arranged in a serpentine structure comprising: a first active segment in which the conductive elements extend across the active region from the first inactive region to the second inactive region; a second active segment in which the conductive elements extend across the active region from the second inactive region to the first inactive region; and an inactive segment coupling the first active segment to the second active segment, wherein the inactive segment comprises a turn provided in the

Abstract: A stator (1) for an electric machine (101), wherein the stator (1) has N?3 phases (U, V, W), P?2 pole pairs, and q?1 holes, the stator (1) comprises a stator core (3) having at least 2NPq slots (4) and a number of 2NPqL shaped conductors (5) arranged in an even number of L?4 layers (6a-h) radially layered in the slots (4), the shaped conductors (5) form 2q paths (7a-d) per phase and are arranged in 2P winding zones (8), which each extend radially over L layers (6a-h) and in the circumferential direction over at least q directly adjacent slots (4), the shaped conductors (5) of each path are connected in a series circuit, which is provided by connectors (9a-e, 10a-f, 11a-g) arranged at both end faces (2a, 2b) of the stator core, each path comprises L/2 groups (12a-d) of shaped conductors (5) successively connected in series, each group (12a-d) is formed by at least one arrangement (13a, 13b) of at least four shaped conductors (5) which are arranged alternately in two immediately adjacent layers (6a-g) and ar

Abstract: A stator module is applicable to a motor. The motor comprises z slots, 2p poles, and m phases, where z, p, and m are integers. The stator module includes a stator core and a stator winding. The stator core has multiple stator slots, and the stator slots are distributed in a circumferential direction of the stator core. The stator winding includes a first-class conductor segment, a second-class conductor segment, and a third-class conductor segment. A pitch between a first in-slot portion and a second in-slot portion of the first-class conductor segment is (y?1) stator slots, a pitch between a first in-slot portion and a second in-slot portion of the second-class conductor segment is y stator slots, and a pitch between a first in-slot portion and a second in-slot portion of the third-class conductor segment is (y+1) stator slots, where y is an integer and y=z/2p.

Abstract: A stator winding structure (100) for a motor. The motor is a three-phase alternating current motor having eight poles. Each phase comprises four shunt wound branches. The stator winding consists of multiple U-shaped flat copper wires (10). A connection portion of each U-shaped flat copper wire (10) disposed in the motor is located on the same side with respect to the motor. The technical solution also provides a motor comprising the stator winding structure (100) and a vehicle comprising the motor.

Abstract: Systems are provided for an electric motor. In one example, a system may include a plurality of segmented slots positioned around an inner surface of a stator, wherein each of the plurality of segmented slots comprises a first section comprising a first width and a second section comprising a second width, the second width different than the first.

Abstract: Systems and methods to form concentrated motor windings may include bending wires into a U-shape, inserting the wires onto a stator pole, bending ends of the wires around the stator pole, and welding respective pairs of the ends of the bent wires. In some example embodiments, the U-shape may include a twist along a central portion thereof. In other example embodiments, a twist may be introduced along the respective pairs of bent ends of the wires that are then welded. In addition, the wires may be stacked and laterally inserted onto the stator pole. Further, the wire bending, twisting, insertion, welding, and other forming processes may be performed by automated or robotic machinery or equipment.

Abstract: The present disclosure describes a motor stator, in which a flux winding is bent into a wave shape, and may be divided into a plurality of first parts, a plurality of second parts, and a plurality of third parts based on winding positions on a stator core. In a process of embedding flux windings into stator slots on the stator core, the flux windings may be directly sunk into the stator slots one by one, so that the second part is embedded into the stator slot, the first part is located on an outer surface of the stator core, and the third part is located on an inner surface of the stator core.

Abstract: Improved electric machines with tuned coils, integrated power electronics, and stator and rotor cooling assemblies.

Abstract: The present invention provides a process of fabricating a capacitive microphone such as a MEMS microphone with two capacitors. The two capacitors may be so fabricated that the signal output from the first capacitor is additive inverse of that from the second capacitor, and a total signal output is a difference between the two outputs. In at least one of the two capacitors, a movable or deflectable membrane/diaphragm moves in a lateral manner relative to the fixed capacitor plate, instead of moving toward/from the fixed plate. The squeeze film damping, and the noise are substantially avoided, and the performances of the microphone are significantly improved.

Abstract: The present invention provides a process of fabricating a capacitive microphone such as a MEMS microphone with two capacitors. The two capacitors may be so fabricated that the signal output from the first capacitor is additive inverse of that from the second capacitor, and a total signal output is a difference between the two outputs. In at least one of the two capacitors, a movable or deflectable membrane/diaphragm moves in a lateral manner relative to the fixed capacitor plate, instead of moving toward/from the fixed plate. The squeeze film damping, and the noise are substantially avoided, and the performances of the microphone are significantly improved.

Abstract: The present invention relates to a coil module for an electric machine, comprising: a first coil disc having at least one winding of an electrically conductive material; a second coil disc having at least one winding of an electrically conductive material; wherein the first coil disc and/or the second coil disc comprise/comprises a substantially annular recess; wherein the first coil disc and the second coil disc are attached to each other such that a substantially annular cooling channel for a coolant is formed between the first coil disc and the second coil disc by the substantially annular recesses/recess.

Abstract: The present invention provides a process for fabricating a capacitive microphone such as a MEMS microphone. In the microphone, a movable or deflectable membrane/diaphragm may be so fabricated that it moves in a lateral manner relative to a fixed backplate, instead of moving toward/from the fixed backplate. The fixed backplate may be so fabricated that it includes an electrical insulator sandwiched between two sub-conductors to cancel systematic/background noise. The squeeze film damping is substantially avoided, and the performance, such as signal to noise ratio, of the fabricated microphone is significantly improved.

Abstract: The present invention relates to a coil module for an electric machine, comprising at least one coil disc comprising a coil carrier made of an electrically insulating material and a plurality of individual windings made of an electrically conductive material and being circumferentially arranged on the coil disc around a center of the coil disc. Each of the windings comprises two active regions extending radially from the center and two passive regions extending tangentially at its radially outer and inner edges, wherein, in a top view of the coil disc, the active regions of different windings do not overlap each other, but each passive region of one of the windings partially overlaps the corresponding passive regions of the two directly adjacent windings. In the active regions, the respective winding in cross-section has a greater thickness in the axial direction than in the passive regions.

Abstract: A stator includes a stator core, stator windings provided in the stator core, and a busbar connected to coil end portions of the stator windings. The busbar is composed of a flat conductor body and has a main body portion extended in a circumferential direction in parallel to a circumference of the stator core and multiple protruding portions extended radially from the main body portion. The protruding portions and the coil end portions are joined by laser welding. A thickness of each of the protruding portions in a laser beam emitting direction in which a welded portion is irradiated with a laser beam during the laser welding is greater than a plate thickness of the main body portion in the same direction.

Abstract: A stator for an electric machine, comprising a stator core and a stator winding, wherein the stator core has a plurality of slots, which are spaced apart in a circumferential direction and have a depth running in the radial direction, and allows the arrangement of slot sections of the stator winding in a plurality of radially spaced-apart radial positions, wherein the stator has a strip-like winding unit comprising a first and a second winding conductor, wherein the two winding conductors run in a first and a second layer of the winding unit and each comprises: a plurality of straight slot sections which run in a transverse direction of the winding unit and are arranged in parallel, a plurality of first bent end sections which each interconnect two slot sections of the associated winding conductor and are arranged on a first longitudinal side of the winding unit, a plurality of second bent end sections which each interconnect two slot sections of the associated winding conductor and are arranged on a second l

Abstract: In one aspect of the present invention, a motor includes a rotor that is rotatable about a center axis line and a stator that is disposed on a radial outside of the rotor. The stator includes a winding portion including a plurality of conductor connection bodies in which a plurality of conductors are connected in series and a stator core in which a plurality of slots through which the conductor connection body passes are provided. The winding portion includes a neutral point portion located on one side in the axial direction of the stator core, ends of the three conductor connection bodies being electrically connected to the neutral point portion. The neutral point portion includes two connection portions to which two of different combinations of the ends of the three conductor connection bodies are connected.

Abstract: A fractional slot electric motor includes a stator core having a first side, a second side, and stator slots extending between the first and second sides. The fractional slot electric motor also includes a coil having a plurality of coil elements, where each coil element extends through at least one of the stator slots. Each coil element is coupled to at least one other coil element along the first side of the stator core. A first subset of the coil elements includes coil elements coupled to each other along the second side of the stator core. A second subset of the coil elements includes loop coil elements, where each loop coil element extends from one of the stator slots to another of the stator slots along the second side of the stator core without being connected to other coil elements along the second side of the stator core.

Abstract: An object of the present invention is to efficiently cool a rotor coil even in a rotor provided with a wire connection plate. A stator of a rotating electric machine includes a stator core, a plurality of segment coils protruding from slots of the stator core and arranged in a radial direction, a connection conductor that connects the segment coils, and an insulating member that holds the connection conductor. The insulating member includes a through hole through which the segment coil penetrates and is accommodated. An opening through which a coolant can flow into the through hole is provided on an inner peripheral side of the insulating member.

Abstract: An axial flux electrical machine, such as an electric motor, dynamo, pump, generator, or alternator has a casing with vents or openings enabling cooling or pumped media to flow into and out of the casing when the rotor of the electrical machine rotates. The stator is formed from conductive elements connected at their axial outer regions by interconnecting members. Conductive elements have a gap or space to direct cooling through the winding to the central region. A portion of the windings of the stator are spaced apart to allow media to flow between the windings to the central axis area and then is allowed flow outward between the rotor and the stator.

Abstract: Presented are electric machines with optimized stator tooth geometries and multi-gauge stator conductors, methods for making/using such electric machines, and motor vehicles equipped with such electric machines. An electric machine includes a housing, a rotor assembly rotatably attached to the housing, and a stator assembly coaxial with and separated by an airgap from the rotor assembly. The rotor assembly includes one or more magnets mounted to a rotor core. The stator assembly includes a stator core with multiple axially elongated, circumferentially spaced stator slots, multiple radially aligned stator teeth interleaved between and separating the slots, and multiple electromagnetic windings wound through the slots. Each stator tooth has an elongated tooth body with a tooth head at a radial end of a tooth root, which attaches to a cylindrical hub of the stator core. The tooth head has an axial cross-section with a trapezoidal crown integral with a rectangular tip.

Abstract: An electric machine comprising a stator with a plurality of open slots accommodating double-layer distributed winding with conductors transposed in the end-winding area. The conductors are litz wire conductors and the end-winding portions of the conductor are not twisted or turned around the axis of the conductor.

Abstract: A stator module (10) and a motor are provided. The stator module (10) includes a stator core (1) and a stator winding (2). The stator core (1) includes a plurality of stator slots (11), and the plurality of stator slots (11) are distributed in a circumferential direction of the stator core (1). A first winding coil (21) of each phase of the stator winding (2) includes a first winding part (211) and a second winding part (212) connected end to end, the first winding part (211) includes a first crossing segment (2111) to a sixth crossing segment (2116), and the second winding part (212) includes a seventh crossing segment (2121) to a twelfth crossing segment (2126). A second winding coil (22) of each phase of the stator winding (2) includes a third winding part (221) and a fourth winding part (222) connected end to end.

Abstract: A stator assembly of a hairpin winding motor including hairpin coils continuously connected along a circumferential direction to form a coil winding; and a stator core configured to fix the hairpin coils. Outer circumferential surfaces of the hairpin coils formed in the circumferential direction contact an inner circumferential surface of the stator core.

Abstract: An electric generator equipped in a multi-shaft gas turbine engine for aircraft, includes: a rotor attached to the rear end portion of a low-pressure shaft rotatably supported by a bearing in the gas turbine engine; a stator provided around the rotor; wherein the electric generator has no structure to support the low-pressure shaft and the rotor.

Abstract: Device for determining the angular position of a rotor of a rotary electric machine on the basis of signals delivered by a plurality of position sensors, including a circuit producing a control loop for estimating position of the rotor, delivering at output a signal representative of the position, and a circuit for dynamic normalization by the amplitude of the first harmonic of each signal originating from a position sensor. The circuit receives as input each signal originating from a position sensor, and at least one image of the signal representative of the position of the rotor and is configured to demodulate each signal by the image of the signal, determine, at the end of this demodulation, amplitude of the first harmonic of this signal originating from a position sensor, and normalize each signal by dividing it by the amplitude of the first harmonic of the previously determined signal.