286results about "Shielding from electromagnetic fields" patented technology

The invention relates to a drive (30) with - at least one dynamoelectric rotary machine (1) arranged in a housing (2), with a winding system (5) arranged in a stator (4) and a rotor (6) separated therefrom by an air gap (23), which is rotatably mounted about an axis (12) via at least one bearing (10) of a B-side cup-shaped end shield (7), wherein the stator (4) and rotor (6) are located in a motor interior (18) - at least one inverter, wherein the inverter comprises at least some of the following components, such as power semiconductors, chokes, capacitors, control and regulation units and communication units, and is located in an inverter installation space (13) which is radially surrounded at least partially by the B-side end shield (7), wherein at least some components of the inverter are thermally connected to the end shield (7), in particular by thermally connecting heat-intensive components of the inverter,are arranged on an inner side wall (20) of the pot-shaped bearing shield (7), - wherein the converter is arranged axially between the dynamo-electric rotary machine (1) and the bearing of the B-side pot-shaped bearing shield (7), - wherein the motor interior (18) and the converter installation space (13) are separated by a shielding element (16).

The invention relates to a modular suspension axial magnetic flux shielding pump which comprises a pump shell and a machine shell installed on the pump shell, a pump cavity is formed in the pump shell, a water inlet and a water outlet are formed in the pump shell, a pump shaft is fixedly arranged in the center of the machine shell and extends into the pump cavity, an impeller rotationally installed on the pump shaft is arranged in the pump cavity, and a motor is arranged in the pump cavity. A rotor mounting groove is formed in the surface, facing the machine shell, of the impeller, a rotor module is arranged in the rotor mounting groove, and a rotor shielding sleeve for sealing the rotor mounting groove is arranged on the impeller; a stator installation groove is formed in the machine shell around the pump shaft, a stator module is arranged in the stator installation groove, the stator module and the rotor module are oppositely arranged, and a stator shielding plate for sealing the stator installation groove is arranged on the machine shell. The planar circular ring stator shielding plate is adopted, the manufacturing cost is reduced, the assembly process effect is simplified, the machine shell adopts bilateral water cooling, the motor power density is improved, the motor cost effect is reduced, the stator and rotor modular design is achieved, the rotor module rotates, the pump shaft is fixed, and assembly is simple.

An electric pump comprises a stator assembly, the stator assembly comprises a stator core and a winding, the winding comprises a main body section, a first section and a second section, the main body section connects the first section and the second section; the stator core comprises a core tooth part, a core yoke part and a core neck part, the core yoke part is located at the outer periphery of the winding; a first reference plane is defined, the first reference plane coincides with the axial center axis of the core tooth part and the axial center axis of the core neck part, a section of the stator assembly is made along the first reference plane, the upper end of the section of the main body section is flush with the upper end of the section of the core yoke part body part, the lower end of the section of the main body section is flush with the lower end of the section of the core yoke part body part; the electric pump further comprises a shielding piece, the material of the shielding piece is a conductive metal material, at least part of the shielding piece is located at the outer periphery of at least one of the first section and the second section; thus it is beneficial to reduce the electromagnetic waves radiated to the outside, thereby it is beneficial to reduce the interference of the electric pump to the outside.

To simplify assembly and to reduce the susceptibility to faults of a linear drive comprising a transmission housing, an interference-suppressed electric motor which is connected thereto and is accommodated in a motor housing and which by way of a rotor accommodated in the motor housing drives a shaft which is mounted on a rear shaft end in a rear shaft bearing and is mounted on a front shaft end, a commutator for the transmission of current to the rotor, electrical and / or electronic components for interference suppression of the electric motor, it is proposed that the rear shaft bearing is mounted in the motor housing, the front shaft bearing is mounted in the transmission housing and the electrical and / or electronic components required for interference suppression of the electric motor are arranged on an interference suppression circuit board arranged between the front shaft bearing and the commutator.

Disclosed are a non-contact rotary transformer and a motor comprising same. A non-contact rotary transformer according to the present invention is a device for connecting a rotor of a motor with an external power source in a non-contact manner, and is characterized by comprising: a core part disposed inside a hollow motor shaft in a coaxial structure with the motor shaft; a primary coil part installed on the outer circumferential surface of the core part; a secondary coil part which is installed on an inner main surface of the motor shaft and surrounds the primary coil part at a predetermined interval (air gap) therefrom; and a rectifier circuit part which is coupled to the motor shaft and rotates in synchronization therewith, and which is electrically connected to the secondary coil part.

A coaxial double-rotor column type motor disclosed by the present invention comprises a motor shell and a rotating shaft, the rotating shaft is rotatably arranged in the motor shell, two coaxial motor stators are fixed in the motor shell side by side, and a coaxial motor rotor is configured in the middle of each motor stator. The two motor rotors are fixedly arranged on the rotating shaft in a sleeving mode, and the two motor rotors generate electromagnetic torque under the action of rotating magnetic fields generated by the two motor stators so as to jointly drive the rotating shaft to rotate. The double-motor structure composed of the double rotors and the double stators is adopted, the efficiency of the motor can be remarkably improved, under the same input power, the motor can output higher mechanical power, energy loss in the conversion process is effectively reduced, and then heat generated due to energy loss is greatly reduced.

There is provided a bearing comprising an inner race, an outer race and one or more roller elements positioned radially between the inner and outer races. The bearing further comprises a wireless power transfer system affixed to or integrally formed with the at least one of the races.

A drive unit (1) comprising an electric machine (2) and an inverter (4) is described. The electric machine (2) includes a machine housing (3), a stator arranged therein, and a rotor rotatably mounted relative to the stator. The inverter (4) comprises an inverter housing part (5) with an inverter circuit (7) arranged thereon, and a busbar holder (8) for maintaining an electrical connection between the inverter (4) and the electric machine (2), the inverter housing part (5) being mounted on the machine housing (3).The busbar holder (8) is positioned via a first positioning pin (P1) and a second positioning pin (P2), wherein the first positioning pin (P1) is fitted in the inverter housing part (5), in the busbar holder (8), and in the machine housing (3), and the second positioning pin (P2) is fitted in the inverter housing part (5) and in the busbar holder (8) without being fitted in the machine housing (3). Furthermore, a vehicle (13) with such a drive unit (1) is specified, as well as a method for manufacturing such a drive unit (1).

A stage assembly for supporting and moving electronic components includes a guide rail. The stage assembly also includes a carrier for supporting an electronic component and moveable along a length of the guide rail. The stage assembly further includes a linear motor comprising a rotor and a stator assembly positioned along the length of the guide rail, the rotor operatively coupled to the carrier to actuate movement of the carrier along the length of the guide rail. The stage assembly yet further includes a flux shield formed of a ferromagnetic material and positioned between the stator assembly and the carrier. The stage assembly also includes one or more magnetic preload assemblies operatively coupled to the carrier.

The invention provides a metal shielding sleeve for a shield pump, and belongs to the technical field of pumps. The problems that an existing shielding sleeve welding structure is high in leakage risk, large in machining difficulty and the like are solved. The metal shielding sleeve for the shield pump comprises an inner support made of metal and an integrally formed rotor shielding case, wherein the inner support and the rotor shielding case are enclosed to form a rotor cavity. The rotor shielding cover comprises a first transverse circular ring part, a first vertical circular ring part and a second transverse circular ring part which are in smooth connection, the first transverse circular ring part abuts against the outer peripheral surface of the inner support, a first fixing part at the upper end of the inner support is fixed to the first transverse circular ring part through elastic sealing, and the second transverse circular ring part is fixed to the lower end of the inner support through welding. By means of the integrally-formed structure, welding seams are reduced, upper-end elastic sealing and lower-end welding are combined, multiple elastic sealing pieces are matched, welding deviation and uneven stress are effectively compensated, sealing reliability is remarkably improved, and meanwhile electromagnetic performance stability and the manufacturing yield are guaranteed.

The utility model discloses a shielding structure and a motor, and relates to the technical field of motors. The shielding structure comprises a shell assembly, a light guide part and a limiting part. The shell assembly comprises a first metal shell and a second metal shell; the light guide piece is arranged between the first metal shell and the second metal shell; the limiting piece is arranged in the light guide piece in a penetrating mode and connected between the first metal shell and the second metal shell in an abutting mode, and the size of the limiting piece in the axial direction of the shielding structure is larger than that of the light guide piece in the axial direction of the shielding structure. According to the shielding structure provided by the invention, the possibility that the light guide part is extruded and damaged by the shell assembly can be reduced, the electric continuous lap joint area can be increased, the grounding impedance is reduced, and the electromagnetic compatibility of the motor is improved.

The utility model discloses a shielding type underwater thruster stator, which belongs to the technical field of underwater thrusters and comprises a metal shell, metal flanges are respectively welded at two ends of the metal shell, connecting welding holes are formed in the middle parts of the two metal flanges, shielding sleeves are fixedly sleeved in the two connecting welding holes, and the shielding sleeves are connected with the metal flanges. And the middle part of the shielding sleeve penetrates through the inner cavity of the metal shell. According to the utility model, the metal shell, the metal flange and the shielding sleeve are connected through welding, and the stator winding and the stator coil are arranged in the space formed by welding and sealing the metal shell, the metal flange and the shielding sleeve, so that a pressure compensation device is omitted, a sealing ring is not needed for sealing, and pressure compensation liquid is not needed; the problem of pressure compensation liquid leakage does not exist, the underwater propeller is designed to be of a pressure bearing structure and can work underwater for a long time, and the operation safety of the underwater propeller is greatly improved.

The invention provides a power assembly and a vehicle with the power assembly, the power assembly comprises an integrated shell and a stator rotating mechanism, the integrated shell is internally provided with a containing cavity, the containing cavity is internally provided with a motor shaft, a first motor unit and a second motor unit, the first motor unit and the second motor unit are both arranged on the motor shaft, and the stator rotating mechanism is arranged in the containing cavity. The first motor unit and the second motor unit are arranged in the axial direction of the motor shaft in a spaced mode. The stator rotating mechanism is connected with a stator of the second motor unit, and the stator rotating mechanism is rotatably arranged relative to the side wall of the containing cavity so as to adjust the stator angle of the second motor unit. By designing the stator rotating mechanism, the circumferential angle of the stator of the second motor unit is adjusted, and noise and resonance of the motor are reduced.

An encoder according to an embodiment includes: a shaft; an annular magnet connected to the shaft; a housing accommodating at least a portion of the shaft and the annular magnet; and a shield member protruding from the housing in a first direction orthogonal to an axial direction of the shaft.

There is provided a bearing comprising an inner race, an outer race and one or more roller elements positioned radially between the inner and outer races. The bearing further comprises a wireless power transfer system affixed to or integrally formed with the at least one of the races.

The present invention relates to a dual-voltage power supply vehicle, comprising: a vehicle chassis, the vehicle chassis being provided with a carriage, the carriage being provided with a power output compartment; a heat dissipation mechanism being provided in the carriage for dissipating heat; a diesel generator set being provided in the carriage, the diesel generator set being used to provide a backup power supply, the diesel generator set comprising a diesel engine, a generator stator winding coil and a magnet rotor, the diesel engine driving the magnet rotor to rotate, the diesel generator set being able to output a first rated voltage, and after reducing the speed of change of the magnetic flux between the generator stator winding coil and the magnet rotor, the diesel generator set being able to output a second rated voltage, the second rated voltage being lower than the first rated voltage; a power switch cabinet being used to control the opening or closing of a gate between an output end of the diesel generator set and a load; and a cable winch being provided in the carriage for connecting an output cable of the power supply vehicle to a load.

The invention relates to the field of motors, and discloses a magnetic suspension doubly salient permanent magnet motor, which comprises a rotating assembly, and is characterized in that the rotating assembly comprises a rotor shaft and a stator part arranged at the outer side of the rotor shaft; the radial suspension assembly is arranged on the outer side of the rotor shaft; the axial suspension assembly is arranged on the outer side of the rotor shaft; the permanent magnet is located between the radial suspension assembly and the axial suspension assembly; the equipment combines the characteristics of a magnetic bearing and a doubly salient motor, due to the magnetic isolation effect of the permanent magnets, the armature magnetic field of the motor and the magnetic suspension bearing control magnetic field do not influence each other, independent control of torque and suspension force can be realized without adding a decoupling algorithm, the advantages of no mechanical wear, long service life and the like of the magnetic suspension bearing are exerted, and the magnetic suspension bearing is more stable in performance. And the purposes of low energy consumption and high efficiency of the doubly salient motor are achieved.

The application discloses a magnetic assembly of a motor, the motor, a suspension system and a vehicle. The magnetic assembly of the motor comprises a shielding member, the shielding member comprises a plurality of split members, the plurality of split members are matched to define a hollow cylindrical shape, and each split member is a magnetic conductive material piece. A first magnetic exciting member is arranged in the interior of the shielding member, and the first magnetic exciting member is adapted to be coupled with a second magnetic exciting member of the motor to cause relative movement of the first magnetic exciting member and the second magnetic exciting member. The magnetic assembly of the motor according to the embodiment of the application utilizes a plurality of split members to form a shielding member, utilizes the shielding member to reduce magnetic leakage, has the advantages of improving the utilization rate of magnetic force, improving the efficiency and power density of the motor and the like.

The invention discloses an ineffective potential suppression structure for a small inductosyn, and belongs to the technical field of inductosyn. The invention aims at the application requirements of high precision and small size of the inductosyn. A stator effective conductor of the inductosyn is arranged on the front surface of the stator substrate and is arranged along the whole circumference of the stator substrate; a stator substrate and a rotor substrate of the inductosyn are made of ferromagnetic materials. Stator ineffective conductors of the inductosyn are arranged on the back face of a stator substrate and are arranged along the whole circumference. The stator non-effective conductor and the stator effective conductor are connected through dense via holes; a stator effective conductor and a rotor conductor of the inductosyn are arranged in a radial alignment manner. According to the stator design scheme based on the double-layer metal-based MCPCB, the ferromagnetic material is used for improving the signal strength and shielding the ineffective potential, the precision and the signal-to-noise ratio are improved, meanwhile, the radial and axial space occupation is reduced, and the application requirement of the induction synchronizer in a small precise servo system is met.

The present invention relates to a housing part (1a, 1b, 1c), preferably a motor housing part (1a, 1b, 1c), for at least partially enclosing a device, preferably an electric motor, with at least one first plastic element (10) and with at least one insert element (11), which are fixedly connected to each other and designed to enclose the device at least partially, wherein the insert element (11) is designed to be electrically and / or magnetically shielding.

The shaft of the motor is provided with: a cylindrical first shaft extending in the axial direction; a cover portion disposed at one axial end portion of the first shaft; a second shaft extending in one axial direction from the cover part; the first shaft through hole penetrates through the first shaft in the radial direction; and a second shaft through hole communicating with the inside of the first shaft and the outside space of the shaft. The cover portion and the second shaft are electrically conductive. The second shaft through hole is disposed closer to one side in the axial direction than the first shaft through hole. The second shaft is in contact with a de-energizing device electrically connecting the shaft with the housing of the motor.

The present disclosure relates to a choke system for reducing common mode current in an AC drive system. The present disclosure addresses common mode current and bearing current in an alternating current (AC) drive system by using an AC choke assembly integrated with a shielded coaxial electrical cable. This design weakens common mode current and ensures electromagnetic compatibility. The AC choke assembly includes a magnetic core with an axial bore that receives a coaxial electrical cable. The cable is surrounded by a metal housing and insulated by a dielectric separator. An optional dielectric outer cover may further insulate the metal housing. Thermal interface pastes may be used to maximize heat transfer between layers of an AC choke. One side of the metal housing is connected to the first set of coaxial cable shield ends, or the other side may be connected to a traction drive unit (TDU) or a traction power inverter module (TPIM). Alternatively, the AC choke may be located in a middle section of the coaxial cable.

The application provides a motor, and belongs to the technical field of motors.The motor comprises a shell, motor windings and a magneto-electric encoder arranged on the inner and outer sides of the shell respectively; the motor further comprises a protection structure arranged between the motor windings and the magneto-electric encoder, and the protection structure is configured to protect the magneto-electric encoder; the protection structure comprises a magnetic isolation part and a heat insulation part; the magnetic isolation part is configured to shield the alternating magnetic field generated by the motor windings from being transmitted to the magneto-electric encoder to protect the magneto-electric encoder, and the heat insulation part is configured to block the heat generated by the motor windings from being transmitted to the magneto-electric encoder to protect the magneto-electric encoder doubly. The protection structure composed of the heat insulation part and the magnetic isolation part can protect the magneto-electric encoder in the motor doubly, and the stability of the motor during operation is improved as a whole.

The rotating electric machine apparatus according to the present disclosure includes: a rotating electric machine having a rotating shaft; a control unit which is arranged side by side with the rotating motor in the axial direction along the axis of the rotating shaft and controls the rotating motor; and an electromagnetic shield covering the control unit, the control unit having: a control substrate extending in the axial direction and to which an external connection terminal is connected; and a filter unit that attenuates noise components propagating to the external connection terminal, and the electromagnetic shield covers the entire control substrate and is formed in a cylindrical shape including a first top portion having a through-hole through which the external connection terminal is inserted, and a second top portion disposed closer to the rotating electric machine side than the first top portion. At least a part of the filter unit is mounted on the control substrate, and is disposed between the first apex and the second apex in the axial direction.

A position detector (5) comprises a position-detection-specific magnet (6) that can be installed on a rotor (4) moving along a conveying path (2) comprising a stator (3); a position detection unit (7) that can be installed on the conveying path (2) and that detects a magnetic field generated by the position-detection-specific magnet (6); a plurality of magnetic shielding elements (8) that can be arranged and installed with a gap (10) in a first direction (A), which is a direction of movement of the rotor (4) along the conveying path (2), and are designed to provide shielding against a magnetic flux that runs from a rotor magnet (4c) of the rotor (4) and coils (3b) of the stator (3) to the position detection unit (7);and a gap-specific magnetic shielding element (9) which closes the gap (10) between adjacent magnetic shielding elements of the magnetic shielding elements (8), wherein the gap-specific magnetic shielding element (9) is designed to provide shielding against the magnetic flux;

A rotary electric device of the present disclosure includes: a rotary electric machine including a rotating shaft; a control unit disposed side by side with the rotary electric machine in an axial direction along an axis of the rotating shaft and configured to control the rotary electric machine; and an electromagnetic shield covering the control unit. The control unit includes a control board extending in the axial direction, an external connection terminal being connected to the control board, and a filter configured to attenuate a noise component to be propagated to the external connection terminal. The electromagnetic shield is formed in a tubular shape covering the entire control board and including a first top portion provided with a through-hole into which the external connection terminal is inserted, and a second top portion disposed closer to the rotary electric machine than the first top portion. At least a part of the filter is mounted on the control board and is disposed between the first top portion and the second top portion in the axial direction.

The utility model discloses a synchronous reluctance high-temperature-resistant motor, which belongs to the technical field of synchronous reluctance high-temperature-resistant motors and comprises a stator, the stator is a hollow structural body, and high-temperature-resistant winding groups are arranged at two ends of the stator; the rotor is installed in the stator, the rotor and the stator are coaxially arranged, a rotating shaft is arranged at the center position of the rotor in a penetrating mode, and the rotor is a non-magnetic steel structural body; and the shielding case is positioned between the stator and the rotor so as to separate the stator from the rotor. The synchronous reluctance high-temperature-resistant motor is good in high-temperature-resistant performance, stable use of the synchronous reluctance motor in a high-temperature scene can be met, the rotor adopts a non-magnetic steel structural body, the risk of demagnetization does not exist, and therefore the service life of the motor can be effectively prolonged.

The present application provides a coil assembly and an electronic expansion valve having same. The coil assembly comprises: a stator assembly, wherein the stator assembly comprises a stator housing and a winding, the winding is located in the stator housing, and the stator housing is made of an electrically conductive material and a magnetically conductive material; a terminal, wherein the terminal is partially located outside the stator housing and is electrically connected to the winding; and a wire harness, which comprises a shielding layer and wires, wherein one end of each wire is electrically connected to the terminal, and the other end of the wire is configured to be electrically connected to a wiring apparatus; the shielding layer wraps around the outer sides of the wires; the shielding layer has an electrically conductive material; the end of the shielding layer close to the terminal is a connecting end; the connecting end is electrically connected to the stator housing; and the shielding layer can be grounded. By means of the technical solution of the present application, the problem in the prior art of the capability of the coil assembly to resist electromagnetic interference being poor can be solved.

The application relates to the motor technical field and discloses a brushless motor system and a treadmill adopting the system. The brushless motor system comprises an inner rotation brushless motor, an induction module and a mounting module. An NS pole magnet is fixedly installed on an output shaft of the inner rotation brushless motor. The NS pole magnet cooperates with the induction module to perform non-contact induction sampling. The induction module is fixed at an end of the mounting module and the output shaft of the inner rotation brushless motor. An anti-interference module is arranged between the mounting module and the inner rotation brushless motor. When vibration is generated, the anti-interference module drives the induction module and the NS pole magnet to keep central alignment, the induction collection part of the induction module cannot be separated from the collection area, the magnetic field sampling is continuous, and the stability of an encoder output signal is improved.

The invention relates to a water pump with a heat dissipation structure, and relates to the technical field of water pumps, the water pump comprises a pump body and a motor, the pump body comprises a pump cavity, an impeller is arranged in the pump cavity, the motor comprises a shielding sleeve, a cavity in the motor is divided into a stator cavity and a rotor cavity by the shielding sleeve, a stator is arranged in the stator cavity, a rotor is arranged in the rotor cavity, and the rotor is arranged in the rotor cavity. A first flow channel is formed between the rotor and the shielding sleeve, the first flow channel is communicated with the pump cavity, the rotor is further provided with a second flow channel, and the second flow channel is communicated with a water inlet of the impeller. The water pump has the advantage that the heat dissipation performance of the water pump can be improved.