21results about "Synchronous machines" patented technology

System for a wet-running brush module (4) of an electric machine with a rotatable shaft (80) having at least one bearing (84, 85), characterized in that the system has at least one spray nozzle (20) for a medium, wherein the at least one spray nozzle (20) is designed to spray the medium onto the at least one bearing (84, 85) of the shaft (80), wherein at least one receiving module (18) is attached to the brush module (4), via which the at least one spray nozzle (20) is connected to the brush module (4), wherein the at least one spray nozzle (20) is screwed, pressed or clipped into the at least one receiving module (18).

This invention discloses a self-starting permanent magnet motor rotor and a self-starting permanent magnet motor, relating to the field of motor technology. The invention includes guide bar slots arranged in a circular array on the edge of the rotor laminations; and guide bars uniformly distributed in space within the guide bar slots. The relationship between the number of guide bars and the number of guide bar slots is: number of guide bars / number of guide bar slots = (t-1) / t, where t is only 2, 3, or 4. By employing the optimized structure proposed in this invention, the number of rotor guide bars is reduced to 3 / 4 of the number of guide bar slots, successfully reducing the starting current multiple to 7 times, enabling successful load starting of the self-starting motor. The proposed structure / method can significantly reduce the starting current of the self-starting permanent magnet synchronous motor, reduce the impact on the power grid during motor starting, and reduce the impact on other electrical equipment in the same power grid.

To provide an axial gap motor that can suppress noise and vibration caused by rotor deflection and deformation without hindering flattening. [Solution] In an axial gap motor 100 comprising a planar rotor 120 with a rotating shaft 130 as its center of rotation, a stator 150 positioned opposite one side of the rotor 120, and a bearing 140 that rotatably holds the rotor 120 relative to the stator 150, the inner ring portion 141 of the bearing 140 is fixed to the outer circumferential surface of the rotor 120, and the outer ring portion 142 of the bearing 140 is fixed to the inner circumferential surface 151c of the outer cylinder portion 151b of the stator 150.

The invention relates to a rotor for an electric machine, the rotor comprising: - a shaft intended to be driven in rotation about an axis X; - a body which is rotationally fixed to the shaft and comprises n slots (7) distributed around the axis X and defining n teeth (8, 9) extending radially outwards; where n is an even number greater than or equal to 2; - coils of wire (10) which are wound around the teeth (8, 9) and inserted into the slots (7), said coils of wire (10) being configured to impart to the teeth (8, 9) opposite polarities alternately about the axis X; and - at least one permanent magnet (19) disposed in one of the slots (7) and oriented such that a first pole and a second pole of opposite polarities are each adjacent to a tooth (8, 9) having a corresponding polarity. Figure to be published with the abstract: Fig. 3

An automotive generator electric vehicle platform. The platform includes an on-board generator operable to be driven by hydraulic pressure and pneumatic pressure to provide power production on-demand against conditions causing deceleration or being affected by resistance. The hydraulic pressure is applied by a hydraulic impeller operably associated with the on-board generator. The pneumatic pressure is applied by a pneumatic impeller operably associated with a pulley drive system configured with a reverse skew bevel gear tilt ratio.

The present invention concerns an electrical generator (1 ) comprising: a first body (11 ) capable of generating a magnetic field which extends along a main direction parallel to a first axis (Y), having a first and a second magnetic pole; a second body (12) capable of generating a magnetic field, which extends along a main direction parallel to said first axis (Y), arranged parallel with respect to said body (11 ) and having a third and a fourth magnet pole, such that said third magnetic pole is arranged in correspondence with said first magnetic pole of said body (11 ) and said fourth pole is arranged in correspondence with to said second pole; at least a first ferromagnetic element (21 ), which, in a rest configuration, extends substantially perpendicular to said first axis (Y) and is arranged between said first (11 ) and second (12) body; an axis of rotation (5), perpendicular to said first axis (Y), around which axis of rotation (5), in an operational configuration, said at least one first ferromagnetic element (21 ) is able to rotate; at least a first segment of support (31 ), which is arranged between said first pole of said first body (11 ) and third pole of said second body (12) or between said second and fourth pole; at least one electrical conductor (3) arranged wrapped around said at least a first segment of support (31 ); a frame (20) configured to anchor said at least a first ferromagnetic element (21 ) and to connect to a plurality of ferromagnetic elements (41, 42, 43, 44) arranged between said at least a first segment of support (31 ) and the respective magnetic poles of said first (11 ) and second (12) body, wherein said frame (20) rotates around said axis of rotation (5), integral to the rotation of said at least a first ferromagnetic element (21 ) and said plurality of ferromagnetic elements. The present invention also concerns an operating method of the generator (1 ).

The claw pole type magnetic suspension torque motor comprises a coaxial and gap matched stator assembly and rotor assembly; the stator assembly comprises an end cover, claw poles, a coil framework, coils and a magnetic conducting sleeve; the claw poles comprise upper claw poles and lower claw poles; the cavity formed between the upper claw poles and the lower claw poles is provided with the coil framework, and the coils are wound on the coil framework; the rotor assembly comprises an annular shell, permanent magnets, a base and a rotating shaft; the annular shell is sleeved outside the claw poles; the bottom of the annular shell is provided with the base; the base is provided with a base shoulder; a blind hole is formed in the center of the base shoulder; the lower end of the rotating shaft is fixedly arranged in the blind hole; the upper end of the rotating shaft passes through the magnetic conducting sleeve of the stator assembly upwards; the stator assembly is assembled with the rotating shaft of the rotor assembly through gap matching by means of the magnetic conducting sleeve. The motor does not need additional zero adjusting screws and zero adjusting springs; the rotor can be accurately suspended in the axial and circumferential middle positions under the magnetic force between the stator and the rotor; and the motor has the advantages of high stability, large rotation angle range and high torque density.

In order to use a Compressor having an overall housing which comprises a compressor housing section in which a compressing unit is arranged for compressing a refrigerant entering said overall housing, said overall housing further comprises a motor housing section in which an electric motor for driving said compressing unit is arranged, said refrigerant is guided by said overall housing into the motor housing section and into the compressor housing section, and said electric motor comprises a rotor and a stator, said stator being provided with electric windings for generating a revolving magnetic field, with natural refrigerants the electric windings are wound of electric conductors being primarily made of ammonia resistant metal and isolated by an insulating layer being ammonia resistant.

A system to convert electrical power to torque having one or more motor controllers and an electric motor assembly (EMA) adapted to rotate a main shaft. Each motor controller adapted to receive high-voltage, direct-current (HVDC) and convert the HVDC to multiphase high-voltage, alternating-current (HVAC) output power at a fundamental frequency of about 10 hertz to about 1000 hertz, wherein each motor controller varies its respective multiphase HVAC output power in response to received power input commands. The EMA has a rotor assembly rotatable relative a stator module to rotate the main shaft, each rotor assembly having a plurality of magnets arranged to form a plurality of magnetic poles and each stator module has a plurality of stator windings wrapped about a projecting structure and configured to receive the HVAC power from the motor controllers. The main shaft of the electric motor assembly rotating at between 0-8000 revolutions per minute (RPM).

A machine assembly includes a ferromagnetic annular rotor rotatable about a central vertical axis and configured to support at least one object. A plurality of levitation actuators are spaced circumferentially about the central axis and radially outwardly from the rotor. Each levitation actuator includes a permanent magnet configured to exert an attractive force on the rotor to levitate the rotor above a base surface, the attractive force having a vertical component along the central axis. A plurality of axial adjustment actuators are spaced circumferentially about the central axis and radially outwardly from the rotor. Each axial adjustment actuator includes an electromagnet configured to exert an attractive force on the rotor to adjust the position of the rotor along the central axis, the attractive force of each axial adjustment actuator having a vertical component directed in an opposing axial direction from the vertical component of the levitation actuators attractive force.

A rotor includes: a rotor core rotatably disposed about a rotating shaft and formed of a first magnetic material; a plurality of first salient poles formed of the first magnetic material and formed on an outer peripheral surface of the rotor core at predetermined intervals in a circumferential direction of the rotor core; a plurality of second salient poles provided radially outside the plurality of first salient poles of the rotor core and formed of a second magnetic material having lower iron loss than the first magnetic material; and a stopper, formed of an insulating material, that is engaged with the first salient poles and the second salient poles.

A synchronous reluctance motor includes a rotor having a rotor iron core and a stator having pole teeth. The rotor iron core defines multiple magnetic poles. A magnetic barrier area is defined between adjacent magnetic poles in a circumferential direction, and a conductor area is located at a radially outer side of the magnetic barrier area. The magnetic barrier area is provided with a hole arranged in multiple layers in a radial direction and defining a magnetic barrier. The conductor area is provided with multiple conductors arranged at substantially equal intervals in the circumferential direction and having substantially identical cross-sectional shapes as each other. The following relationship is satisfied: Nc={2×[Nt / (2×Np)−1]−1}×Np where Nt is a number of the pole teeth, Np is a number of the magnetic poles, and Nc is a number of the conductors.

The present disclosure relates to an electric machine and a vehicle, wherein the electric machine can include a rotor and a stator; the stator can include a stator body, an armature tooth with an armature winding, and a permanent magnet tooth with a permanent magnet, the armature tooth and the permanent magnet tooth being adjacently arranged on the stator body and extending towards the rotor. The electric machine of the present disclosure increases the magnetic resistance of the magnetic flux leakage path by arranging the armature winding and the permanent magnet on the adjacent different teeth, thereby reducing the leakage flux on the stator side in the electric machine. Based on this, the electric machine of the present disclosure can improve the leakage flux phenomenon of the electric machine to some extent, thereby being able to improve the torque output capability of the electric machine.

An electric motor includes a rotor and a stator formed by a plurality of stator phases. The stator phases include coils that extend fully about the motor axis of the motor. The stator phases further include teeth arrayed around the motor axis. Each tooth has a tooth face oriented towards the rotor. Multiple of the lamina forming each tooth are exposed at the tooth face and are configured to extend axially and radially to the tooth face. The stator phases magnetically interact with the rotor to drive rotation of the rotor on the motor axis.

Internal combustion engine in a portable, hand-held power tool such as a chainsaw, cut-off saw, brush cutter, or blower, wherein the internal combustion engine (1) comprises a piston (6), a combustion chamber (5) with a spark plug (15), and a crankshaft (4) driven by the piston (6) and mounted in a crankcase (3), with an inlet (8) for combustion air and an outlet (9) for exhaust gases, a wheel body (50) rotating with the crankshaft (4), and an alternating current generator (16) driven by the crankshaft (4) which supplies an electrical load, wherein the alternating current generator (16) is arranged within the radial boundary of the wheel body (50) and outside the crankcase (3), wherein the stator (40) of the alternating current generator (16) is penetrated by the crankshaft (4), and the rotor (52) is non-rotatably connected to the wheel body (50).and wherein the rotor (52) is designed as a magnetic ring (30) covering the stator (40), characterized in that the magnetic ring (30) is surrounded by a magnetic return ring (32).

The present invention relates to a regenerative braking and power generation system for a trailer that is capable of self-generating the electricity required by the trailer by providing a generator in a brake disc space of the trailer, and includes at least one axle (3) fixed to the trailer chassis (2), a wheel hub (5) and / or a brake disc (6) that is axially mounted on the outer surface of the axle (3) via a plurality of bearings (4) and rotates passively, a space (7) recessed into one side of the brake disc (6), a permanent magnet (8) that is attached and fixed in close contact with the inner surface of the space (7) and rotates together with the brake disc 6, and a generator stator (9) fixed to the outer peripheral surface of the axle (3) corresponding to the permanent magnet (8). The AC power generated by the generator (10) is converted to DC power by a rectifier (20) consisting of a plurality of full-wave diodes (D1, D2, D3, D4, D5, D6) and a smoothing capacitor (C), and then charged into a rechargeable cell (secondary cell) or battery (40) by a charge controller (30), and then supplied to a DC (direct current) load (50). The power of the battery (40) is converted to 50 to 60 Hz AC power by an inverter (60), and then supplied to an AC (alternating current) load 70.

The goal is to reduce rotor iron loss while minimizing cost increases and torque density decreases. [Solution] The rotor 3 is rotatably arranged around a rotation axis 2 and includes a rotor core 10 made of a first magnetic material, first salient poles 21 made of the first magnetic material formed at predetermined intervals in the circumferential direction of the rotor core 10 on the outer circumferential surface of the rotor core 10, second salient poles 22 made of a second magnetic material having less iron loss than the first magnetic material and provided radially outward of the rotor core 10 on the first salient poles 21, and a stopper 23 made of an insulating material that engages with the first salient poles 21 and the second salient poles 22.

In order to use a Compressor having an overall housing which comprises a compressor housing section in which a compressing unit is arranged for compressing a refrigerant entering said overall housing, said overall housing further comprises a motor housing section in which an electric motor for driving said compressing unit is arranged, said refrigerant is guided by said overall housing into the motor housing section and into the compressor housing section, and said electric motor comprises a rotor and a stator, said stator being provided with electric windings for generating a revolving magnetic field, with natural refrigerants the electric windings are wound of electric conductors being primarily made of ammonia resistant metal and isolated by an insulating layer being ammonia resistant.

Rotor (1) for a separately excited electric machine (2), comprising a rotor body (4) formed from a plurality of stacked rotor laminations (3), which forms several axially extending grooves (5) for receiving a winding (6), and the rotor laminations (3) having a first group of radially extending polars (9) which are monolithically formed with the rotor laminations (3), wherein the rotor body (4) further comprises a second group of radially extending polars (10) which are positively connected and / or force-fit and / or materially bonded to the rotor body (4) and the winding (6) is designed as a ring which is inserted into the slots (5) in a meandering manner, forming winding heads (20a,20b) that project axially from the rotor body (4) and partially encloses the polars (9) of the first group and the polars (10) of the second group, so that each of the polars (9,10) has only one winding head (20a,20b), wherein when current is applied to the windings (6) rotor poles (7) are formed, wherein the winding (6) is penetrated by a plurality of cooling tubes (11) extending axially through the winding (6), the cooling tubes (11) being hydraulically coupled to a balancing disk (12) at the winding heads (20a, 20b), so that during operation of the rotor (1) cooling fluid (13) exiting axially from the cooling tubes (11) can exit radially outwards from the balancing disk (12) via a fluid guidance structure (14) formed in the balancing disk (12).

A mechatronic system (1) tolerant to a single electrical failure of a hybrid-electric or electric aircraft machine, said mechatronic system (1) comprising an electric machine (2) and at least two electronic circuits (3a, 3b) each comprising at least one energy accumulator (5a, 5b) and at least one converter (7a, 7b) positioned downstream of the energy accumulator (5a, 5b), the electric machine (2) being connected to the aircraft engine and to the electronic circuits (3a, 3b). The electronic circuits (3a, 3b) each include at least one electrical fault symmetrization element (8a, 8b) comprising at least one phase signal (a, b, c, a', b', c') fault symmetrization branch at the output of the converter (7a,7b) connected to an associated phase (A, B, C, A', B', C') of the electrical machine (2), the electrical machine (2) comprising at least two magnetically independent three-phase stars (4a, 4b).Figure for the abbreviation: Fig 2.

A bearingless split tooth flux-reversal motor (FRM) for use with a pump, such as a centrifugal blood pump. In some embodiments, the motor has a magnet-free rotor and a magnetic configuration wherein the force generation is independent of the rotor angle, allowing for simple radial force generation using stator-fixed currents. The motor torque can be generated using commutated two-phase currents.