131 results about "Stator poles" patented technology

A cooled axial flux electric motor includes a rotationally fixed stator defining an axis of rotation and having a plurality of electrically conductive stator poles arranged radially about the axis. The motor also includes a rotor axially spaced from the stator from one side and rotatably mounted coaxially with the axis of rotation and defined by an inner diameter and an outer diameter. The rotor has a first outer surface facing the stator and a second outer surface disposed opposite the first outer surface. The ferromagnetic rotor core defines a rotor second outer surface. The rotor also includes a plurality of alternating South and North pole permanent magnets (PMs) arranged symmetrically about the axis on the rotor core and facing the stator. The rotor also includes a channel extending radially outward across the rotor and configured to direct coolant from the inner diameter toward the outer diameter via centrifugal force when the rotor is rotated about the axis.

An electric machine assembly including: a rotor; and a stator disposed concentrically about the rotor and separated from the rotor by a gap; where the rotor includes five rotor protrusions disposed concentrically about the rotor; where the stator includes two permanent magnets or direct current coils disposed concentrically about the stator and magnetized is opposing directions, where each of the permanent magnets or direct current coils provides an associated baseline magnetic flux that is adapted to interact with the rotor protrusions; and where the stator includes six stator poles disposed concentrically about the stator, where each of the stator poles is adapted to receive a current to provide an associated induced magnetic flux that is adapted to interact with the rotor protrusions. The stator is divided into two stator segments, where each stator segment includes three stator poles of the six stator poles, and where the two stator segments are separated by the two permanent magnets or direct current coils.

A stator assembly may include a circumferential stator core, which includes a plurality of stator poles, a plurality of stator slots located between adjacent stator poles, and a plurality of conductive coils surrounding a portion of each stator pole, and a coolant wall assembly extending across each stator slot. The coolant wall assembly includes a first bar and a second bar, with each bar extending along a length of the stator poles and having an outer sidewall contacting a stator pole, and an inner sidewall opposite the outer sidewall, the inner sidewalls of the first bar and second bar together forming a central interlock groove; and a central bar extending the length of the stator poles, and located in the interlock groove.

The invention relates to an electric machine having a cooling channel loop for stator poles. An axial flux electric motor includes a rotationally fixed stator defining an axis of rotation and having a plurality of electrically conductive stator poles arranged radially about the axis of rotation. The electric motor further comprises a rotor axially spaced from one side of the stator, rotatably mounted coaxially with the axis of rotation, and having a plurality of permanent magnets (PM) arranged symmetrically about the axis of rotation and facing the stator. When current passes through the poles, torque is generated on the at least one rotor by a rotating magnetic field established via interaction between the corresponding PM and the poles. The stator also includes a plurality of cooling channel loops together surrounding each of the stator poles and configured to receive and pass a fluid therethrough to remove thermal energy from the stator poles generated by current therethrough.

The invention belongs to the technical field of inductor and generator manufacturing, and particularly relates to a self-resonance coil winding method and a low-reluctance generator coil winding. A same-direction lamination winding method is adopted, a wire is fixed at a starting point, N turns are wound to form a first layer of a coil, then the first layer of the coil is attached, M turns are wound in the same direction, the first layer is overlapped, a second layer of the coil is formed, then the second layer of the coil is attached, X turns are wound in the same direction, the second layer is overlapped, and the third layer of the coil is formed. And winding the fourth layer, the fifth layer to the Yth layer according to the same rule. The layers of the finished coil are connected in series and are stacked into a whole layer by layer. By improving the winding method of the coil, the magnetic poles of the generator generate magnetoelectric energy standing waves and voltage and current phase shifts, so that the magnetic resistance of the stator magnetic poles of the generator to the rotation of the rotor is reduced, and the efficiency of converting mechanical energy into electric energy of the generator is greatly improved.

The utility model provides an embedded magnetic suspension-air flotation hybrid bearing, and belongs to the field of bearings. The problems that an existing embedded magnetic-gas hybrid bearing is complex in machining process, and an air bearing part is poor in reusability and difficult to repair are solved. Comprising an inner supporting structure and an outer supporting structure which are embedded into the two sides of the magnetic-gas hybrid bearing seat, an outer supporting tooth-shaped table of the outer supporting structure is inserted between stator magnetic poles of the magnetic suspension bearing and spliced with an inner supporting tooth-shaped table of the inner supporting structure to form a complete cylindrical surface, and a corrugated foil wraps a top foil and is arranged in the spliced cylindrical surface. According to the utility model, the direct contact between the journal and the magnetic pole can be avoided, and the working rotating speed range and adaptive load of the magnetic suspension bearing and the air bearing are expanded; a protective bearing of the magnetic suspension bearing is replaced by the air bearing, so that the axial length of the rotor is reduced, and the shafting stability is improved; and installation and maintenance are convenient.

The utility model provides a magnetic suspension mixed conveying line. The magnetic suspension mixed conveying line comprises a first magnetic suspension driving track, a front connection magnetic suspension driving track located at one end of the first magnetic suspension driving track, a rear connection magnetic suspension driving track located at the other end of the first magnetic suspension driving track and a conveying mechanism. The front connection magnetic suspension driving track and the rear connection magnetic suspension driving track can reciprocate between the first magnetic suspension driving track and the conveying mechanism and are connected with the first magnetic suspension driving track and the conveying mechanism; the conveying mechanism is used for receiving the magnetic suspension rotor conveyed by the rear connection magnetic suspension driving rail and conveying the magnetic suspension rotor to the front lifting connection magnetic suspension driving rail. According to the utility model, nearly a half of magnetic suspension track driving stators are saved, the construction cost of a magnetic suspension circulating line is greatly saved, meanwhile, the excellent characteristics of high response speed, high positioning accuracy and low abrasion of magnetic suspension driving are still kept at a working station, and the magnetic suspension track driving device has a good application prospect.

Motor for use in a washing machine, comprising: a stator (100), comprising: a core (108) made of magnetically permeable material, comprising an annular ring section (104) having an inner diameter of 120 mm to 250 mm and a radial width (134) of 5 mm to 15 mm, 27 radially extending poles (102) spaced apart around the outer circumference of the annular ring section (104), the poles (102) extending outwards from the annular ring by a distance of 15 mm to 40 mm, three phase windings, each winding comprising a plurality of coils arranged on one third of the pole cores (109), the windings on the pole cores (109) being arranged such that each pole core (109) is assigned only one winding, which is different from the winding assigned to each of two immediately adjacent pole cores (109). is,and the two immediately adjacent pole cores (109) are assigned to different windings, an insulator that insulates the pole cores from the windings, a rotor (36) that is concentric to the stator (100), with a permanent magnet ring (38) outside the stator (100) and rotor poles that point towards the ends of the stator poles (102), wherein the ratio of rotor poles to stator poles (102) is 4:3.

Embodiments described herein relate to systems and methods for controlling a switched reluctance motor with double-layer toroidal winding. A control system for a motor includes: a switched reluctance motor including: a rotor including a plurality of salient poles, and a stator disposed concentrically with the rotor, the stator including a plurality of slots on a stator core, each of the plurality of slots accommodating a first coil and a second coil, each wound around the stator core in a toroidal configuration between directly adjacent stator teeth, each of the first and second coils respectively forming stator poles, and a drive circuit including a transistor and a diode, the drive circuit being configured to independently excite the first coil and the second coil by providing at least one of positive or negative currents to each of the first and second coils bi-directionally or single directionally.

The utility model discloses a starting motor stator pole shoe run-out detection device, which belongs to the technical field of rapid detection after starting motor stator processing, and comprises a base and a detection module, the top of the base is provided with a positioning disc and a rotating disc, and the upper end face of the rotating disc is provided with a circular mounting groove; the detection module comprises linear sliding rails, each linear sliding rail is provided with a sliding table and a transmission plate, one end of each transmission plate in the length direction is vertically provided with a measuring rod, and each transmission plate is provided with a measuring device. According to the invention, an expensive three-coordinate measuring machine and a complex clamp design are not needed, the detection cost is greatly reduced, instant detection of stator pole shoe jumping is realized, the tedious process of sending a stator to a detection department in a traditional detection mode is avoided, the detection period is obviously shortened, and the production efficiency is improved.

The invention relates to a simplified method for producing at least a part of a stator of an axial flux machine by providing a first joining section (21) made of a first material on a first stator pole (11) of the stator and providing a second joining section (22) made of a second material on a second stator pole (12) of the stator. In this case, a first joining section (21) of the first stator pole (11) and a second joining section (22) of the second stator pole (12) overlap in an overlap region (5) in the circumferential direction of the stator and are joined, the second joining section (22) being further outward than the first joining section (21) with respect to the center of the stator. The second material is at least mostly permeable to the predetermined laser wavelength, but the first material is impermeable to the predetermined laser wavelength. The first joining section (21) is welded to the second joining section (22) by irradiating the overlap region (5) with a laser beam (9) of a predetermined laser wavelength. The invention also relates to a stator manufactured by using the above method.

A modular stator assembly for an electric machine comprises a plurality of stator pole modules distributed circumferentially, each module including at least one press-formed phase coil. The machine includes a rotor assembly, which may comprise two or more rotors, having permanent magnets. These magnets are positioned to substantially surround each stator pole, with their magnetic fields oriented either in-plane or through-plane. Energizing a phase coil generates a magnetic field, creating a complete magnetic circuit that flows from the stator poles through the surrounding permanent magnets and, optionally, the back iron. This interaction between the stator's magnetic field and the permanent magnets produces torque, causing rotation of the rotor assembly relative to the stator assembly.

A switched reluctance electrical motor comprises a rotor having a substantially circular cylindrical envelope with a diameter in a range of 50 mm to 300 mm and a length in the range of 20 mm to 250 mm. The rotor comprises a plurality of radially extending rotor teeth. A switched reluctance electrical motor further comprises a stator surrounding the rotor and comprising a plurality of stator poles. The rotor teeth are circumferentially-spaced apart from each other to define slots between adjacent teeth that, expressed in normalised angular and radial coordinates, have a cross-sectional profile transverse to an axis of rotation of the rotor, lying within a well-defined polygonal region.

A vernier motor or generator is widely concerned due to low copper consumption, the end parts of all phases of windings of a conventional distributed winding are overlapped, the process is complicated, and the required investment of coil inserting equipment is large, the vernier motor or generator with the centralized winding comprises a stator and a rotor (mover) with the centralized winding, the number P of pole pairs of the stator winding is equal to Z1-Z2, Z1 is the number of pole pairs of the stator, and Z2 is the number of pole pairs of the rotor. And the rotor Z2 is the number of pole pairs of the rotor. The motor is mainly characterized in that each winding on the stator is wound in two adjacent winding grooves. In addition, due to the fact that the magnetic density fluctuation range of a notch winding area caused by rotor magnetic steel is too large, the winding generates large alternating current copper loss, the winding even alternating current resistance is far larger than direct current resistance, and a vernier motor or a generator with a magnetic slot wedge or a stator iron core semi-closed slot at the winding notch position is specially developed. After the magnetic slot wedge is used, harmonic waves can be reduced.

The electric machine includes a rotationally fixed stator defining an axis of rotation of the electric machine and having a plurality of stator poles arranged about the axis of rotation. The electric machine also has a rotor rotatably mounted coaxially with the axis of rotation and axially spaced from the stator, the rotor having a plurality of permanent magnets facing the stator poles. Each stator pole includes: a plurality of ferromagnetic laminations in a stack of laminations extending from a radially inward extent to a radially outward extent relative to an axis of rotation; and a ferromagnetic composite pole portion attached to a radially outward extent or a radially inward extent of the stack of laminations of the stator poles.

The invention provides a salient pole reluctance rotor switch flux linkage motor with maximum fundamental wave ratio magnetic conductance, which belongs to the technical field of stator permanent magnet synchronous motors and comprises a stator iron core, permanent magnets, armature windings and a salient pole reluctance rotor. The stator iron core is composed of a plurality of identical U-shaped iron cores. The permanent magnets are arranged between two adjacent U-shaped iron cores; the armature windings are wound on the adjacent U-shaped iron cores; the salient pole reluctance rotor is arranged in the stator core, and the overall dimension of the salient pole reluctance rotor is calculated and determined according to the inner diameter of the stator, the length of an air gap and the number of poles of the stator, so that the salient pole reluctance rotor is of a salient pole rotor structure with the maximum fundamental wave ratio magnetic conductance, and the torque pulsation of the switched flux linkage motor is reduced. The motor has the advantages of low torque pulsation, simple structure, high reliability and the like, and is suitable for occasions with high requirements on motor torque pulsation performance, such as numerical control machine tools, intelligent robots and the like.

The motor (1) has a housing (10), a stator (11), a rotor (12), and regulating electronics (RE). The stator has a soft iron lamination assembly (13) and a winding arrangement (14) defining the motor axis (x). The soft iron lamination assembly (13) has soft iron sections (s1-sn) and connecting elements (133). The winding arrangement (14) has a layered structure with at least two bearing layers (b) and a connecting medium. These bearing layers (b) are connected to each other by the connecting medium. At least one conductor line (e1-en) is arranged between these bearing layers (b). The at least one conductor line (e1-en) has a first end (f) and a second end (f') and is at least partially sealed relative to gas and liquid by the layered structure in the region between the first end (f) and the second end (f'). The end (f), the second end (f'), or the first end (f) and the second end (f') are at least partially electrically connected to each other by at least one phase bridge (p). The layered structure and the at least one conductor line (e1-en) extend around the motor axis (x) between the first end (f) and the second end (f') to form a layer (142). The layer (142) has units (c1-cn). Soft iron segments (s1-sn) extend through these units (c1-cn) and together with these units define stator poles (j1-jn). These stator poles (j1-jn) form a matrix (Q) having rows (m) and at least one column (n). The rows (m) are staggered in the circumferential direction and the at least one column (n) is staggered in the direction of the motor axis (x) in the presence of at least two columns (n).

An electric motor is provided that includes a housing, a stator, a rotor, and a coolant. The rotor has an output shaft. The rotor is disposed radially inside of the stator and is configured for rotation relative to the stator about a rotational axis. The stator includes an outer radial ring portion and a plurality of stator poles. Each stator pole extends radially inward from the outer radial ring portion to a distal end. The stator includes a plurality of stator cooling circuits. Each stator cooling circuit includes a circumferentially extending outer radial channel located in the outer radial ring portion of the stator and a stator pole channel disposed in each stator pole. The stator pole channel is in fluid communication with the outer radial channel. The stator pole channel extends radially within the respective stator pole. The coolant has magnetic properties disposed in the stator cooling circuits.

The present application discloses a control method for a linear motor. The linear motor includes a mover and at least two stator segments. The control method includes: obtaining the structural parameters of the linear motor, where the structural parameters include pole pitch, mover length, mover pole pairs, stator length, stator pole pairs, and the number of stator segments; calculating the coupling coefficients between the mover and each stator segment, where the coupling coefficients are related to the stator length, mover length, and the relative position between the mover and the stator, and the sum of the coupling coefficients between the mover and each stator segment is equal to 1; and powering the stator according to the coupling state between the mover and the stator according to a power supply strategy, where the power supply strategy includes: in response to the coupling coefficient between the mover and any stator segment being non-zero, powering the stator segment, and in response to the coupling coefficient between the mover and any stator segment being zero, stopping power supply to the stator segment. The present application can achieve general control of long / short mover motors and improve the stability of the mover movement process.

A magnet-free electric machine. The electric machine may include a stator including a first stator winding set and a second stator winding set and a rotor including a first rotor winding set and a second rotor winding set. The electric machine may include a power transfer circuit configured for controlling a polarity and / or a phase sequence of excitation currents used in exciting the first and second stator and rotor windings, and thereby, respectively generated stator and rotor poles.

The invention relates to a synchronous electric machine with reconfigurable rotor and stator poles. The invention discloses a non-magnetic motor. The electric machine may comprise: a stator comprising a first stator winding arrangement and a second stator winding arrangement; and a rotor comprising a first rotor winding arrangement and a second rotor winding arrangement. The electric machine may include a power transfer circuit configured to control the polarity and / or phase sequence of an excitation current used in exciting the first and second stator and rotor windings, and the stator and rotor poles thus generated, respectively.

The utility model provides a coil component and a motorized valve with the same, the coil component comprises a stator shell, the stator shell is provided with a containing cavity, the circumferential side wall of the stator shell is provided with a passing port and a limiting structure which are communicated with each other, and the limiting structure is located at the end part of the passing port along the circumferential direction of the stator shell; the part, located outside the passing opening and the limiting structure, of the circumferential side wall of the stator shell is of a closed structure. Part of the framework is arranged in the accommodating cavity, and the other part of the framework extends out of the accommodating cavity from the passing opening; the stator pole plate is connected with the framework, at least part of the stator pole plate is located in the containing cavity, the stator pole plate is provided with a limiting part, and the limiting part is in limiting fit with the limiting structure. According to the technical scheme provided by the utility model, the problem that the processing technology of the stator polar plate and the stator shell is relatively complex because the stator shell needs to be provided with more gaps in the positioning matching mode of the stator shell and the stator polar plate based on multiple gaps in the prior art can be solved.

A two-phase bipolar step motor, comprises a rotor having a plurality of pairs of rotor poles of alternating magnetic polarity, and a stator having four primary energizable stator poles with conductive windings around those primary stator poles and four passive inter-poles located uniformly between every adjacent pair of primary stator poles, the passive inter-poles lacking any conductive windings. Both 18° steppers with five pairs of rotor poles and 30° steppers with three pairs of rotor poles are provided. Also provided are both PM hybrid mix steppers with 2D magnetic flux paths and hybrid steppers with 3D magnetic flux paths having an axial component. In each case, the overall lengths of the flux paths are substantially reduced from conventional designs resulting in improved motor efficiency.

A stator defines multiple stator poles with associated stator windings. A rotor defines multiple rotor poles with associated rotor windings configured to be energized substantially by the stator. The rotor defines a rotor field energizable by magnetic fields produced by the stator windings to produce relative force between the rotor and the stator. An active rectifier is conductively coupled to one or more first rotor windings. The active rectifier is configured to control a direction of current flow through the one or more first rotor windings responsive to a signal received wirelessly from the stator by one or more second rotor windings.

An assembly for an electric motor, the assembly comprising: a stator comprising a plurality of stator poles, each stator pole comprising a base end and a rotor end opposite the base end; and an electromagnetic coil surrounding each stator pole. The coil surrounding each stator pole includes at least two conductive wires wound around the stator pole into a plurality of turns extending from the base end of the stator pole to the rotor end of the stator pole. The turns of the coil closer to the rotor end of the stator pole are twisted, and the turns of the coil closer to the base end of the stator pole are not twisted.

A system for controlling pitch angle of a blade of a wind turbine is provided. The system may comprise a switched reluctance motor and an inverter. The motor may be configured to be positioned at a hub of the wind turbine and coupled to the blade. The motor may have a stator and a rotor. The stator may have: (i) multiple stator poles and (ii) coil windings around each of the multiple stator poles. The rotor may be rotatably mounted with respect to the stator. The rotor may have multiple rotor poles and a rotor shaft configured to be coupled to the blade to control the pitch angle of the blade. The inverter may be configured to supply electrical power to the coil windings to control motion of the rotor shaft in response to receiving a pitch angle control signal from a pitch angle control system of the wind turbine.

The application belongs to the technical field of motor stator winding, in particular to an automobile motor stator winding machine, which comprises a base, a sliding groove is formed in the upper end of the base, a sliding frame is slidably connected in the sliding groove, a winding frame is rotatably connected to the inner upper end of the sliding frame, a gear ring is fixedly connected to the outer part of the inner cavity of the sliding frame, the gear ring is meshingly connected with a gear disc, a wire guide cylinder is fixedly connected to the upper end of the winding frame for guiding the discharge of copper wire; the existing winding machine usually puts the stator on the fixed inserting column, then the pressing column presses it from the top, and then the winding mechanism and the wire clamping mechanism cooperatively complete the copper wire clamping and winding operation, however, the diameter of the inserting column is fixed, when facing different specifications of stators, if the inner diameter of the stator is too large, the radial gap between the inserting column and the inner cavity of the stator is too large, the stator is prone to shaking during winding, which leads to the decrease of winding precision, on the contrary, if the inner diameter of the stator is too small, the stator cannot be smoothly put into the inserting column, which causes clamping difficulty.

The present invention discloses a magnetic levitation flywheel energy storage device that shares axial magnetic flux with a motor and a magnetic bearing system. The stationary portion of the five-degree-of-freedom magnetic bearing comprises "pole shoe"-type radial magnetic poles and a "pole shoe"-type torsional stator, each of which is wound with coils. The rotating portion of the five-degree-of-freedom magnetic bearing comprises a radial receiving ring, a torsional receiving ring, a radial bias magnetic flux receiving ring, a gyroscope-shaped flywheel, and a first repulsive permanent magnet ring. The flywheel is suspended in the middle of an outer shell, and the three receiving rings are embedded in the outer wall of the flywheel. The first repulsive permanent magnet ring is embedded in the bottom of the flywheel; the second repulsive permanent magnet ring is embedded in a groove at the bottom of the outer shell and is coaxially arranged opposite the first repulsive permanent magnet ring. Two contacting embedded permanent magnet blocks are vertically and horizontally arranged on the inner side of the upper portion of the flywheel. The axial flux motor adopts a single stator and single rotor structure. The present invention can balance system integration, energy storage performance, system loss, safety and stability, and cost.

An electric machine includes a stator defining a plurality of stator poles with associated stator windings configured to receive a stator current. The electric machine also includes a rotor defining a plurality of fixed rotor poles with associated rotor windings, where the rotor defines a field excitable by a magnetic field generated by the stator windings when receiving a stator current to generate a relative motion between the rotor and the stator, and wherein the rotor remains synchronized with the magnetic field generated by the stator during operation of the motor. The electric machine also includes a rectification system configured to control an alternating current induced in the rotor poles when the stator winding receives a stator current and when a magnetic field generated by the stator winding excites the magnetic field.

The invention discloses a control method of a linear motor, the linear motor comprises a rotor and at least two sections of stators, and the control method comprises the following steps: obtaining structure parameters of the linear motor, the structure parameters comprising a pole distance, a rotor length, a rotor pole pair number, a stator length, a stator pole pair number and a stator section number; the coupling coefficients of the rotor and all the sections of stators are calculated, the coupling coefficients are related to the stator length, the rotor length and the relative position between the rotor and the stators, and the sum of the coupling coefficients of the rotor and all the sections of stators is equal to 1; and according to the coupling state between the rotor and the stator, power is supplied to the stator according to a power supply strategy, and the power supply strategy comprises the steps of supplying power to any section of stator in response to the fact that the coupling coefficient between the rotor and any section of stator is not zero, and stopping supplying power to the section of stator in response to the fact that the coupling coefficient between the rotor and any section of stator is zero. According to the invention, the general control of the long / short rotor motor can be realized, and the stability of the rotor movement process is improved.