284 results about "Magnetic line" patented technology

The invention relates to the technical field of transformers, and particularly discloses a small-size and strong-short-circuit-current-resistant transformer, which comprises a transformer body, the transformer body comprises an iron core, a plurality of iron cores, a plurality of short-circuit-current-resistant coils, a plurality of short-circuit-current-resistant coils and a plurality of short-circuit-current-resistant coils, the insulating cylinder is arranged on the outer side of the core column in a sleeving manner; the winding sleeves the outer side of the insulating cylinder, the winding comprises a circular coil wound on the outer wall of the insulating cylinder and a plurality of layers of elliptical coils wound on the outer side of the circular coil, and the trend of the elliptical coils is parallel to magnetic lines generated by the circular coil; heat dissipation channels parallel to the axis of the core column are formed between the circular coils and the oval coils and between every two adjacent oval coils. The space of the core column can be effectively utilized, the elliptical ring can fill the external space, the magnetic field trend of the outer elliptical coil is parallel to that of the inner circular coil, high-frequency loss caused by the proximity effect and eddy-current loss during short circuit can be effectively reduced, and the normal operation efficiency and short-circuit endurance capacity of the transformer are improved.

The invention relates to the technical field of light sources, particularly discloses a method and a device for adjusting the central position of a plasma, and aims to realize accurate positioning and stable control of the plasma by accurately controlling output parameters of a magnetic field generator. According to the method, a magnetic field generator with a specific shape and distribution is utilized, a magnetic field with a closed magnetic line structure is generated in a plasma chamber, charged particles in plasma are guided to move along a preset path, and it can be ensured that the plasma reaches and is kept at an expected position by monitoring and adjusting magnetic field parameters in real time.

The invention belongs to the field of oil and gas exploitation, geothermal exploitation and deep ground engineering, and discloses an oil and gas shaft crack plugging pressure repair material and method based on microwave heating bismuth-based alloy, the material comprises 74%-86% of bismuth-based alloy powder, 10%-15% of Fe3O4-SiO2 core-shell magnetic particles, 3%-8% of a microwave sensitizer and 1%-3% of a wetting agent. The repairing material is conveyed to the position, where shaft crack plugging repairing needs to be conducted, in the oil and gas shaft, then the repairing material is melted in a microwave heating mode, then the melted alloy is filled in shaft crack plugging, and then a rotating gradient magnetic field is used for repairing the oil and gas shaft crack. And the liquid alloy is driven to directionally migrate to a target crack area along the magnetic line, and after alloy liquid is cooled and solidified, pressure repairing of the oil and gas shaft crack plugging target position is achieved. Precise positioning, efficient filling, phase change control and complete recovery of the repairing material can be achieved in the extremely deep environment, and therefore the high-quality repairing requirement for oil and gas shaft crack plugging pressure repairing achieved through efficient liquefaction of plugging metal can be met.

The invention provides a rotor punching sheet, a rotor iron core, a rotor, a motor and an air conditioner, the rotor punching sheet is provided with more than two magnetic pole forming areas corresponding to rotor magnetic poles, and each magnetic pole forming area is internally provided with a magnetic steel groove which is arranged on a q axis and extends along the radial direction; the rotor punching sheet is provided with a first magnetic barrier groove located on the d axis between every two adjacent magnetic steel grooves. Wherein first magnetic bridges are formed between the first magnetic barrier grooves and the adjacent magnetic steel grooves on the two sides, and the width of each first magnetic bridge is gradually increased in the radial outward direction of the rotor punching sheet. According to the technical scheme of the invention, the magnetic lines of force can be gradually drawn close to the d axis from the two sides of the d axis, and the sinusoidal property of the magnetic flux in the air gap is better, so that the torque pulsation of the tangential motor can be reduced.

A transport system 10C has a configuration to move a transport body 500 in conjunction with movement of a moving body 200 by using repulsion based on a magnetic force applied between moving body magnets 213 and a transport body magnet 523 when there is a proximal positional relation between these magnets. The transport system 10C includes a control coil 903 that controls a traveling state of the moving body 200, and a coil drive control unit that drives and controls the control coil. The control coil 903 is configured to apply a magnetic force to the moving body magnets 213. The coil drive control unit supplies the control coil 903 with power to cause the control coil 903 to attract the moving body magnets 213 against an air flow flowing within an air blowing tube 100 in order to control and prevent the moving body 200 from traveling.

The invention provides an oblique coil electromagnetic classificator for separating weak magnetic impurities from strong magnetic concentrate, which comprises a separation cylinder, an ore feeding device and a flushing device, an ore feeding pipe of the ore feeding device extends into the separation cylinder from the top end of the separation cylinder, the flushing device is arranged below the ore feeding pipe, and an oblique coil is arranged on the outer side of the separation cylinder, so that the weak magnetic impurities can be separated from the strong magnetic concentrate. Magnetic lines of force are obliquely distributed, magnetic linkages formed by magnetic particles are oblique, the whole magnetic linkages can be efficiently impacted in cooperation with vertical component force Fz of water flow of the flushing device, and scattering of magnetic aggregates is facilitated; the tail control flat coil and the concentrate gathering flat coil at the upper end and the lower end effectively control tailings and concentrates respectively, so that the separation efficiency of strong magnetic concentrates and weak magnetic impurities is improved, for example, in the iron-titanium separation operation of vanadium titano-magnetite ore dressing, ilmenite mixed into iron ore concentrates can be reduced, the grade of the iron ore concentrates can be improved, and titanium metal resources can be fully recycled.

The invention discloses an ultrasonic abrasive flow surface texture machining device and method based on an auxiliary magnetic field, and belongs to the field of precision machining and surface engineering. The ultrasonic abrasive flow surface texture machining device comprises a workbench, an ultrasonic vibration generating device, a magnetic field generating device, an abrasive flow machining system and a three-dimensional motion platform. The composite abrasive particle suspension is composed of a basic solution, carbonyl iron powder magnetic particles and silicon carbide abrasive particles. According to the method, magnetic particles are guided by a magnetic field to form a chain along magnetic lines of force, ultrasonic high-frequency impact is combined, abrasive materials are driven to impact the surface of a workpiece in order, a submicron texture with the consistent direction and the uniform size is formed, the depth ranges from 0.2 micrometer to 2 micrometers, and the width ranges from 1 micrometer to 20 micrometers. Texture parameters are flexibly regulated and controlled through magnetic field and ultrasonic parameters, and the method has the advantages of being high in machining precision, high in controllability, low in cost, environmentally friendly and recyclable, is suitable for precise parts of bearings and cutters, and can remarkably improve the tribological performance and wettability of the parts.

The invention discloses a Helmholtz coil material lightning magnetic field shielding performance measuring device, which comprises a magnetic field generation device, a shielding test box is arranged in a magnetic field coverage range of the magnetic field generation device, an open hole is formed in the shielding test box, and the open hole enables a magnetic line of force of the magnetic field generation device to transversely penetrate through the shielding test box. The shielding test box is internally provided with the signal measurement unit, the signal measurement unit measures the magnetic field in the shielding test box, the lightning stroke magnetic field environment is accurately simulated, and the repeatability and accuracy of the shielding performance test are improved. The invention further discloses a method for measuring the lightning magnetic field shielding performance of the Helmholtz coil material, the lightning magnetic field shielding performance of the measured shielding material is measured by applying the device for measuring the lightning magnetic field shielding performance of the Helmholtz coil material, and the problem that traditional measurement is poor in accuracy is effectively solved.

This disclosure provides an X-ray imaging device and a wireless power transmission device with electromagnetic shielding. The wireless power transmission device includes: a first annular structure, on which a first frame is fixed, and a first winding is wound; a second annular structure, on which a second frame is fixed, and a second winding is wound; wherein the second annular structure is rotatable relative to the first annular structure; and a metal shielding assembly disposed relative to the first winding and / or the second winding, the metal shielding assembly being used to generate a reverse magnetic field based on the eddy current effect to weaken the main magnetic flux of the wireless power transmission device. This disclosure utilizes the reverse magnetic field generated by the metal shielding assembly based on the eddy current effect to weaken the main magnetic flux of the wireless power transmission device, thereby reducing magnetic field leakage and thus reducing electromagnetic interference of the wireless power transmission device.

The present application relates to a kind of Cherenkov oscillator using composite fine adjustment magnetic field, the present application includes oscillator cavity and the composite fine adjustment magnetic field being arranged outside oscillator cavity, composite fine adjustment magnetic field includes positive solenoid external magnetic field and fine adjustment magnetic field system, fine adjustment magnetic field system is located between positive solenoid external magnetic field and oscillator cavity, fine adjustment magnetic field system includes first positive solenoid fine adjustment magnetic field, second positive solenoid fine adjustment magnetic field and negative solenoid fine adjustment magnetic field, oscillator cavity includes extraction cavity, extraction cavity is arranged with negative solenoid fine adjustment magnetic field outside, negative solenoid fine adjustment magnetic field is arranged with first positive solenoid fine adjustment magnetic field and second positive solenoid fine adjustment magnetic field outside respectively, the present application uses composite hetero solenoid magnetic field combination magnetic field model in magnetic field design and optimally designs, changes magnetic force line configuration, in turn changes electron beam running track.This kind of design guarantees the distance between electron beam and outer cavity, while using local magnetic field to change electron beam configuration method reduces the distance between electron beam and extraction cavity, improves microwave extraction efficiency.

According to one embodiment, a magnetic memory includes first magnetic members extending in a first direction, first wirings extending in a second direction and spaced from each other in a third direction, and a second magnetic member. The second magnetic member has a first portion above the first wirings, a second portion extending in the second direction between adjacent first wirings, a third portion below the plurality of first wirings, and a fourth portion with a part inside an upper end portion of a first magnetic member. A third wiring extends in the third direction and is connected to lower end portions of first magnetic members.

A Hall signal output device for a mouse scroll wheel. The Hall signal output device comprises an encoder fixing bracket disposed inside a mouse, an encoder scroll wheel rotationally arranged inside the encoder fixing bracket, a magnetic ring disposed inside the encoder scroll wheel, and a Hall encoder disposed on a side edge of the encoder fixing bracket and directly facing the magnetic ring. When being rotated, the encoder scroll wheel drives the magnetic ring to rotate, thereby changing the direction of magnetic field lines of the magnetic ring; and then, after detecting the change in the magnetic field lines of the magnetic ring, the Hall encoder generates a pulse signal and outputs same. The Hall signal output device for a mouse scroll wheel has a simple structure, involves a low production cost, high precision and a high response speed, and meets the usage requirements of contemporary people.

A solid-core ring-magnet having one or more cavities is provided. The magnet can have an overall cylindrical shape or a rectangular-prism shape. In either case, a portion of cavity walls of the magnet are ring shaped, causing the magnetic field lines to emanate from the magnet so that the bead formation is in the shape of a ring. A bead separation magnet having a discontinuous or segmented cavity wall is also provided. The segmented cavity wall causes bead formation to form in a segmented or gapped ring to allow for easier manual pipetting. Also provided are systems and kits having the inventive magnets. Methods of purifying a macromolecule using the inventive magnets are also provided.

A method for manufacturing monocrystalline silicon for growing monocrystalline silicon while a horizontal magnetic field is applied to a silicon melt, using a monocrystalline silicon manufacturing apparatus comprising a crucible and a heating device having a hollow cylindrical shape surrounding the crucible. The heating device comprises a first and a second heat-generating section, both having a hollow semi-cylindrical shape and the same heat-generating characteristics. The heating device is arranged such that when the heat-generating sections produce heat with different heat-generating quantities, the heating quantities of the first and second sections of the crucible are different. The first and second sections are arranged on either side across a vertical virtual plane that includes a central axis of the crucible and a central magnetic field line of the horizontal magnetic field.The process involves performing a first heating and generation cycle while the heat generation sections produce heat with the same heat generation quantity, and a second heating and generation cycle while the heat generation sections produce heat with different heat generation quantities.

The invention relates to a planar magnetic integration converter suitable for a distributed photovoltaic matrix transformer ISOP, which aims at a transformer module in LLC topology, adopts an ISOP matrix transformer planar integration method, and integrates and applies a plurality of transformer units into a unified four-column magnetic core. Adjacent magnetic columns have opposite magnetic induction directions through a specific winding mode, so that the magnetic flux density of a magnetic core plane is uniformly distributed by utilizing a magnetic line cancellation method, the maximum peak value is reduced to 1 / 2 of that of a traditional discrete transformer scheme, and low-voltage power supply is provided for a control chip through an auxiliary winding. And the four magnetic columns are wound in parallel, so that the customized high transformation ratio can be conveniently realized, the magnetic field consistency of each magnetic column transformer unit is ensured, finally, the planar magnetic integrated converter device of the matrix transformer ISOP is formed, and the better EMI characteristic is realized.

The invention discloses a low-temperature vacuum annular electron accelerator arc reactor, which relates to the field of electromagnetism and is applied to the technology and concept of energy generation, conversion and transmission. The device is composed of a high-voltage electron gun module (1), a low-temperature vacuum annular pipe module (2), a sealing module (3), an accelerating electric field module (4), a magnet guiding module (5), a magnetic core module (6), an induction coil output module (7) and a base module (8). According to the technology and the concept, a low-temperature vacuum annular electron accelerator is used for replacing a primary coil winding of a traditional transformer, that is, the same electric field is used for circularly accelerating electrons emitted into an annular vacuum tube by an electron gun to form annular electron flow to replace the primary coil winding of the traditional transformer. When the high-speed circling electrons lose to accelerate the action of an electric field, due to the mass inertia effect of the high-speed electrons, the annular current cannot disappear immediately under the guidance of the magnetic lines of force of the fixed magnet, the magnetic flux of the magnetic core still changes, and therefore the secondary coil can still obtain corresponding arc discharge. Therefore, the inductive discharge of the secondary coil can reversely act on the energy conversion of the accelerating electric field or the electron gun, so that the energy conversion efficiency is improved, and the energy loss is reduced.

A fixing apparatus to fix a toner image on a recording material includes a heating unit, a pressure member, a support member, a pressing mechanism, and an insulating member. The heating unit includes a heating member having a conductive layer, a coil having a helical structure portion having a helical axis substantially parallel to a longitudinal direction of the heating member, and a core to induce magnetic lines of force of an alternating magnetic field generated by the coil. The pressure member is in contact with a heating member outer circumferential surface and forms a nip portion between the pressure member and the heating member. The insulating member electrically interrupts a conductive path to prevent formation of the conductive path that is in a loop-shape surrounding the coil and passing through the support member and the pressing mechanism when viewed in an axial direction of the helical axis.

The utility model provides a rotor structure and a motor with the rotor structure, the rotor structure comprises rotor iron core units which are divided into a plurality of sections in the axial direction, each rotor iron core unit is provided with a plurality of magnetic steel grooves, magnets are arranged in the magnetic steel grooves, and adjacent rotor iron core units are connected in a staggered manner in the circumferential direction; a plurality of positioning hole groups are formed in the rotor core unit, the rotor structure rotates anticlockwise, and a first positioning hole group is correspondingly formed in the first side of the center line of the magnetic steel groove; or the rotor structure rotates clockwise, and the second side of the center line of the magnetic steel groove is correspondingly provided with a positioning hole group. The arrangement position of the positioning hole group is related to the rotation direction of the rotor, the arrangement of the positioning hole group enables the magnetic lines of force of the motor to be distorted according to the rotation direction of the motor, the purpose is to influence the distribution of the magnetic lines of force as much as possible, and the torque pulsation of the motor can be reduced through the arrangement.

The invention relates to a radial shimming coil of a hollow cylindrical working area, which is characterized in that decoupling is carried out through a coupling effect of a magnetic shielding barrel and a coil magnetic field, a radial magnetic field component analytic function of the coil at any point in space is obtained through derivation based on a magnetic field superposition principle, and iterative solution is carried out by adopting a particle swarm optimization algorithm; the optimal coil design parameters meeting the target magnetic field distribution are obtained; a magnetic field with magnetic lines in a radial diverging shape and uniform size is formed in a hollow cylindrical working area and is used for magnetic compensation and probe calibration of magnetometers distributed in an annular array in the muscle magnetism and leg magnetism testing process, and the matching degree of the shimming effect and the sensitive direction of a sensor is improved.

A magnetic circuit part of the relay comprises a yoke assembly, a coil assembly, a metal shell, a first static iron core and a movable iron core, the yoke assembly comprises a first wall and a second wall which are oppositely arranged, the first wall is provided with a first hole, a first opening is formed in the first end of the metal shell, and a second opening is formed in the second end of the metal shell; the first hole is opposite to the first opening along the axial direction of the push rod; at least one part of magnetic lines conducted between the first static iron core and the second wall penetrates through the second opening, the surface, facing the first wall, of the first static iron core is provided with a concave part, the movable iron core comprises a first magnetic conductive part and a second magnetic conductive part, and the first magnetic conductive part is provided with a magnetic pole face facing the first wall; the second magnetic conductive part is connected to the side, back to the magnetic pole face, of the first magnetic conductive part, at least part of the structure of the first magnetic conductive part is located in the metal shell and located outside the sunken part, and at least part of the structure of the second magnetic conductive part is located in the sunken part. According to the relay, the pull-in voltage can be reduced while miniaturization is considered.

The invention provides a single-phase alternating-current permanent magnet brushless motor which is different from a common single-phase alternating-current motor, a motor stator of the single-phase alternating-current permanent magnet brushless motor is formed by stacking silicon steel sheets with barrel-shaped interiors and armature slots and armature teeth for winding, and a cylindrical rotor is provided with permanent magnets with magnetic lines perpendicular to a motor rotating shaft in the radial direction. Magnetic lines generated by the stator and the rotor are perpendicular to a motor shaft, stator coils are concentrically wound in a distributed mode, the stator coils can be directly used on a single-phase alternating current power supply without a driver, and the speed can be adjusted through a frequency converter. Compared with a traditional single-phase alternating current motor, the motor power and torque are improved under the condition of the same specification, all south and north poles of the magnetic rotor containing the permanent magnets are driven during driving each time, and high electric energy driving efficiency and high power density are achieved. And energy conservation and emission reduction are achieved in daily industrial power application, and wide application prospects are achieved.

The embodiment of the invention discloses a protective shell and a foldable electronic equipment component, the foldable electronic equipment can be a mobile phone, a wearable device, a vehicle-mounted device, a notebook computer, a netbook, a personal digital assistant and other mobile terminals, and first magnetic pole units and second magnetic pole units are alternately arranged in the protective shell. In this way, the magnetic poles at the same side ends of the adjacent first magnetic pole units and second magnetic pole units can form magnetic fields, so that the density of magnetic lines formed on the end faces of the magnetic poles is increased, and the magnetic force of the corresponding ends is enhanced. The size of the first magnetic pole unit and the size of the second magnetic pole unit in the thickness direction of the rotating shaft protection part can be properly reduced, the thickness of the rotating shaft protection part is further reduced, and when the protection shell is assembled on the foldable electronic equipment, the thickness formed by the rotating shaft protection part and the rotating shaft mechanism is small. The light and thin design requirement for forming the foldable electronic equipment after assembly is facilitated, and the shielding part is further arranged, so that adsorption of the magnetic pole assembly to iron particles in the environment can be weakened.

The utility model provides a structure for improving the uniformity of an aluminum target film, which comprises an aluminum target material and a back plate welded with the aluminum target material, and the thickness of the central area of the aluminum target material is larger than that of the edge area of the aluminum target material. The structure reduces penetration of magnetic lines of force in the central area of the target material and reduces the surface magnetic field intensity of the central area of the target material, so that the uniformity of the aluminum target film is effectively improved.

The utility model provides a high-endurance and high-load unmanned aerial vehicle which comprises an accompanying power supply unit which comprises a generator, a frequency converter, a transformer and a magnetic engine. The magnetic engine comprises a non-magnetic cylinder body, a magnetic piston which is arranged in the cylinder body in a manner of moving up and down, a driving magnet which is fixedly arranged above the cylinder body, a movable magnetic conductive plate which can block magnetic lines of force, and a driving mechanism, so that the magnetic piston is rotationally connected with a crankshaft of which the end part is connected with an inertia flywheel through a connecting rod; the crankshaft is coaxially connected with a rotor of the generator, the driving magnet and the magnetic piston are both strong magnets, the magnetic poles of the opposite sides of the driving magnet and the magnetic piston are the same, the projections of the driving magnet and the magnetic piston in the vertical direction coincide, and whether repulsive force is formed or not can be controlled through moving-in and moving-out of the magnetic conductive plate between the magnetic piston and the driving magnet. And the inertia flywheel is matched to drive the magnetic piston to move up and down, so that the generator is driven to generate electricity, endurance and loading capacity are high, and the utilization efficiency of the loading capacity is high.

The utility model provides a magnetizing device. The magnetizing device comprises an insulator, a plurality of magnetic conductive iron cores and a plurality of coils, the insulator is cylindrical; the magnetic conductive iron cores are arranged on the insulator in a sleeving mode and distributed in the first direction. A containing cavity is formed between every two adjacent magnetic conductive iron cores. A product to be magnetized is sleeved on the magnetic conductive iron core; the first direction is the axis direction of the insulator; a group of coils are arranged in each accommodating cavity; the winding directions of two adjacent groups of coils are opposite, and a non-magnetic insulating material is filled between the coils and the magnetic iron core. In the application, each group of coils form a reverse magnetic field, magnetic lines of force form a radial magnetic field along the circumferential radial direction through each layer of magnetic conductive iron cores, and are arranged along the axial direction, so that a plurality of radial radiation rings with alternating N-S poles are formed at one time, and the number of radial radiation magnetic poles is equal to the number of layers of magnetic conductive iron cores. The magnetizing device not only can magnetize a plurality of to-be-magnetized products at the same time, but also is not limited by the length size of the to-be-magnetized products, and the magnetizing efficiency of the to-be-magnetized products is improved.

A permanent magnet synchronous clutch is mainly composed of a gear hub, a joint sleeve, a synchronous gear ring, a clutch shaft, a bearing, a second-gear driving gear, a first-gear driving gear, a magnet and a gear shifting fork. According to the working principle, in the neutral gear, the gear shifting fork enables the joint sleeve to be located in the middle, at the moment, magnetic lines of force form a closed loop through the magnet, the gear hub and the joint sleeve, and no magnetic force exists between the synchronous gear ring and the magnet; and the joint sleeve is separated from the synchronous gear ring. Gear shifting: the gear shifting fork pushes the joint sleeve to move towards a certain synchronous gear ring along the gear hub, and the magnet on the joint sleeve is close to the synchronous gear ring; firstly, the synchronous teeth and the magnets on the joint sleeve attract each other to achieve synchronization; at the moment, magnetic lines of force form a closed loop through the magnet, the synchronous gear ring, the magnet and the joint sleeve; and then, the joint sleeve continues to move on the gear hub until the synchronous teeth are meshed with the joint sleeve teeth, and one-time gear shifting is completed.

The invention discloses a double-magnetic-source signal generating device and a drill bit orientation verification device and method, and relates to the technical field of drilling, and the double-magnetic-source signal generating device comprises a drill bit, a lower magnetic connector, a bent screw drill, an upper magnetic connector, a non-magnetic drill collar and a drill pipe column which are sequentially connected end to end; the driving device is arranged on the ground surface, is connected with the drill pipe column and is used for driving the drill pipe column to drive the upper magnetic connector and the non-magnetic drill collar to rotate at a first rotating speed, and the upper magnetic connector generates a low-speed magnetic line of force; the earth surface slurry pump circularly drives the rotor of the bent screw drill to rotate at a second rotating speed, the output shaft of the bent screw drill drives the lower magnetic connector and the drill bit to rotate at a third rotating speed, and the lower magnetic connector generates a rapid magnetic line of force; wherein the third rotating speed is the sum of the first rotating speed and the second rotating speed. The azimuth angle of the drill bit can be verified, and accurate butt joint of the drill bit of the directional well relative to the target position is ensured.

The embodiment of the invention discloses a clothes processing device which comprises a box body, a clothes containing barrel and a wireless energy transmission structure, the wireless energy transmission structure comprises two wireless energy transmission assemblies, and the two wireless energy transmission assemblies are fixed relative to the box body and the clothes containing barrel respectively; each wireless energy transmission assembly comprises a coil, at least one wireless energy transmission assembly further comprises a magnetic isolation piece, a magnetic isolation groove is formed in the side, facing the other wireless energy transmission assembly, of each magnetic isolation piece, and the coils are located in the magnetic isolation grooves and connected with the magnetic isolation pieces. According to the wireless energy transmission structure, the coil of the wireless energy transmission assembly is located in the magnetic isolation groove of the magnetic isolation piece, the magnetic line of force can be restrained from the peripheral side of the coil and the side, away from the other wireless energy transmission assembly, of the coil, the magnetic line of force is restrained to a greater extent, and the eddy current influence of the magnetic line of force on other devices except the wireless energy transmission structure can be better improved. And the magnetic isolation piece can also be used for realizing a magnetic gathering effect of the wireless energy transmission assembly, so that a magnetic field is concentrated between the coil and a coil of another wireless energy transmission assembly, and the wireless charging efficiency is improved.

The invention discloses a reluctance rotor design method based on a streamline magnetic barrier and a motor, and belongs to the field of synchronous reluctance motors, a reluctance rotor comprises a magnetic barrier main body, a low-magnetic-conductance tail part and a separated magnetic island, and the design method comprises the following steps: drawing the streamline magnetic barrier main body according to the direction of a magnetic line of force of a d-axis magnetic field by taking increase of d-axis inductance and reduction of q-axis inductance as targets; in order to reduce the magnetic flux leakage of the rotor and reduce the influence on a d-axis magnetic circuit at the same time, the tail part of the magnetic barrier is subjected to narrow opening design, and the endpoint of the magnetic barrier main body and the endpoint of the magnetic barrier tail part are connected through a straight line or an arc to form a low-magnetic-permeability magnetic barrier tail curve; taking all design parameters of the rotor as optimization variables, selecting proper optimization targets and constraint conditions, establishing an optimization problem, and solving the optimization problem to obtain optimal design parameters; and selecting a new material or process mode to realize the integrity of the rotor, and completing the design of the reluctance motor based on the streamline magnetic barrier. According to the invention, the dq-axis reluctance difference can be increased, the salient pole ratio is improved, and the torque output capability of the synchronous reluctance motor is improved.

Different from a common three-phase alternating-current motor, a motor stator of the triangular connection three-phase alternating-current permanent-magnet brushless motor is formed by stacking silicon steel sheets with barrel-shaped interiors and armature slots and armature teeth for winding, and a three-phase winding on the stator adopts a triangular connection method. The cylindrical permanent magnet rotor is radially provided with the permanent magnets of which the magnetic lines are vertical to the rotating shaft of the motor, so that the motor can be directly used on a three-phase alternating-current power supply without a driver, and can also be subjected to speed regulation through an alternating-current frequency converter, and compared with a traditional three-phase alternating-current motor, the efficiency, power and torque of the motor are improved under the condition of the same specification; and all south and north magnetic poles of the magnetic rotor containing the permanent magnets are driven during driving each time, so that high electric energy driving efficiency and high power density are realized. Energy conservation and emission reduction are achieved in daily industrial power application, and the three-phase alternating current motor has the application prospect of replacing a three-phase alternating current motor which is widely used at present and is of great significance.