32results about How to "Increase Electromagnetic Thrust" patented technology

The invention relates to a high-power density permanent magnet motor belonging to the field of motors. The invention solves the problems of low efficiency and thrust density, large thrust fluctuation and high vibration and noises of the traditional double-edge ironless straight line permanent magnet synchronous motor, which are caused by low air gap magnetic density and poor sine degree of air gap magnetic density wave forms. An air gap is positioned between a primary pole and a secondary pole of a straight line motor; main permanent magnets and isolated magnets are sequentially arranged on the inner wall of a yoke plate at intervals; the inner sides of the main permanent magnets are provided with assembling magnets which have same widths along a motion direction; the inner sides of the isolated magnets are provided with auxiliary permanent magnets which have same widths along the motion direction; the outer side surfaces of m auxiliary permanent magnets and m assembling magnets are positioned on a same plane; the main permanent magnets are parallelly magnetized in magnetizing directions perpendicular to the motion directions of active cells, and every two adjacent main permanent magnets are in reverse magnetizing directions; the auxiliary permanent magnets are parallelly magnetized in the magnetizing directions parallel to the motion directions of the active cells, and every two adjacent auxiliary permanent magnets are in reverse magnetizing directions.

The invention relates to a high-power density permanent magnet motor, belonging to the field of motors, solving a problem of poor sine degree of an air gap flux density waveform in a conventional motor. The cross section of each main permanent magnet body in a linear electric motor secondary unit is in a shape of bilaterally symmetric hexagon or octagon, the bottom edge of the hexagon or octagon, close to an air gap side is shorter than the bottom edge far away from the air gap side, the main permanent magnet bodies are magnetized in parallel in a direction vertical to relative motion direction of a primary unit and the secondary unit, auxiliary permanent magnet bodies are magnetized in parallel in the relative motion direction of the primary unit and the secondary unit, and the main permanent magnet bodies and the auxiliary permanent magnet bodies are alternately and closely arranged and fixed on the air gap side of a conductive magnetic yoke. According to the high-power density permanent magnet motor disclosed by the invention, the cross section of each main permanent magnet body in the linear electric motor secondary unit is in the shape of radially symmetric octagon, and the length of the edge of the octagon at the air gap side is smaller than the length of the edge far away from the air gap side; the main permanent magnet bodies are magnetized radially or in parallel, and the auxiliary permanent magnet bodies are magnetized tangentially; and the main permanent magnet bodies and the auxiliary permanent magnet bodies are alternately and closely arranged in the circumferential direction and fixed on the surface of the air gap side of a rotor yoke drum.

The invention disclose a displacement control mode of a rotor of a direct-drive switched-reluctance planar motor, belongs to the field of electromechanical control researches, and specifically relates to a displacement control of a rotor of a direct-drive switched-reluctance planar motor. The displacement control mode disclosed by the invention is characterized in that the displacement motion of a rotor 7 of a direct-drive switched-reluctance planar motor is changed cyclically, and the cycle of motion of the rotor 7 is equal to the pole pitch of a stator 9 and is 12-24 mm; and through dividing each cycle of motion into six equal parts, the control mode disclosed by the invention has the advantages that the power-on states of rotor windings are determined according to six different positions of the rotor 7 relative to a stator 8, because the cycle of motion of the rotor 7 is equal to the pole pitch of the stator 9, each rotor winding is equal in power-on time and displacement, so that the rotor 7 operates stably, thereby facilitating the accurate positioning of the rotor 7; and two phases of rotor windings are power-on simultaneously, so that the electromagnetic thrust of the rotor 7 is increased, and the running speed of the rotor 7 is increased.

The invention provides a dual-stator magnetism-gathering permanent magnet linear motor with concentrated winding of phase windings, which comprises a mover and two single-sided stators arranged at twosides of the mover face to face, wherein the mover is a magnetism-gathering permanent magnet mover structure, permanent magnets are horizontally magnetized along the movement direction of the mover,and two adjacent permanent magnets are opposite in magnetization direction; at least one of the single-sided stators is provided with windings and has a mode of concentrated winding of the phase windings. Each single-sided stator is a certain air gap distance away from the mover, the two air gap distances are equal, and the two single-sided stators has an offset of one stator tooth width along themovement direction of the mover. The permanent magnet linear motor provided by the invention has high power density and output thrust, and effectively suppresses the magnetic resistance and thrust fluctuation.

The invention discloses a high-temperature superconducting linear induction motor driving apparatus used for linear traction. Secondary windings adopt high-temperature superconducting coils (102) put in a secondary iron core (101), and the windings are arranged at the same interval; each high-temperature superconducting coil (102) is a closed coil and singly fixed to a magnet yoke groove of the secondary iron core (101); the high-temperature superconducting coils (102) adopt cake-shaped structures and provided with runway-shaped sections; a secondary assembly is placed in a low-temperature container; an air gap (4) is formed between the bottom plane of the secondary iron core (101) and the upper surface of a primary iron core (202); and the conventional primary iron core (202) and the three-phase symmetrical windings (201) are fixed to the ground. The linear driving apparatus is small in volume, light in weight, high in efficiency, high in thrust and high in loading capability; the reliability of the apparatus is greatly improved and the service life of the apparatus is greatly prolonged; and the high-temperature superconducting linear induction motor driving apparatus can be widely applied to cargo sorting systems, linear induction doors, lathes, trains, metros and the like.

The invention relates to a permanent magnet linear motor with a clamping function, comprising a primary core (2), a primary coil (3), a permanent magnet (8) and a secondary non-magnetic shaft (9) which are arranged from exterior to interior in sequence, wherein the primary coil (3) is wound in the slot of the primary iron core (2); the non-magnetic shaft (9) supports the permanent magnet (8) and an inner iron core (7); an air gap (4) is between the primary and the secondary; the inner iron core (7) is fixed on the secondary non-magnetic shaft (9) and tightly adhered to the upper end of the permanent magnet (8); an outer iron core (6) is fixed on a casing (1); a coil (5) is wound on the iron core (6); and in the case of suction, the suction on the iron core (7) is increased when the coil (5) is electrified to accelerate the suction and play the role in location, while in the case of disconnection, the coil (5) is reversely electrified to weaken axial magnetic field to accelerate the separation of a breaker.

The invention discloses a method for controlling the center defect of an ultra-wide slab, and relates to the technical field of continuous casting blank processing. A continuous casting machine is involved, and comprises eight cooling sections positioned behind a crystallizer, and the method comprises the following steps that an electromagnetic stirring device used for generating spiral rotating force and stirring molten steel is arranged at a second cooling section, the electromagnetic stirring device comprises a first electromagnetic stirring roller set and a second stirring electromagneticroller set, the first stirring electromagnetic roller set is located at the second section of the second cooling section, the second stirring electromagnetic roller set is located at the third sectionof the second cooling section. According to the method, the electric magnetic force can be used for driving a steel liquid perpendicular to columnar crystal to flow so as to enable the temperature ofthe solidified front edge to be uniform, impurities and bubbles in the solidified front edge can be promoted to move, most importantly, columnar dendritic crystal is broken or bent, the solute accumulates in the solidified front edge is uniformly distributed in a solution body, after the dendritic crystal fragments enter the solution body to form a new crystallization core, the quantity of isometric crystal is increased, so that the quality of the continuous casting blank can be improved.

The invention provides an electromagnetic underwater acoustic transducer based on a gas spring and a control method. The underwater acoustic transducer comprises a cylinder, a radiating piece and a sealing piece forming a water-tight space. An armature and a magnetism conducting base are contained inside the water-tight space. The magnetism conducting base and the armature are wound by a first driving coil and a second driving coil respectively. The first driving coil and the second driving coil are powered by independent alternating current power sources so that one end of the magnetic conducting base and one end of the armature can generate identical or opposite magnetic poles, and the two components vibrate through electromagnetic repulsive force or electromagnetic attraction. The portion between the magnetism conducting base and the armature is filled with gas as the gas spring for balancing hydrostatic pressure and supplying rigidity needed by vibration. In the front-stage vibration period, drive current is controlled to generate electromagnetic repulsive force to push the armature to move from the initial balance position, and at the later vibration period, electromagnetic attraction is mainly relied on to pull back the armature to the balance position. The electromagnetic thrust is larger, the vibration amplitude is larger, and the purposes that the size is small, the weight is low, and high-power ultra-low frequency sound wave output is generated are achieved.

The invention discloses a linear traction motor of an urban rail. The traction motor is characterized in that high-temperature superconducting materials are laminated and wind around a coil skeleton (2) to form a plurality of runway type coils that are used as excitation windings (1) of a motor; the excitation windings (1) are fixed in a low-temperature container (3) connected with a secondary skeleton (4). Joints of the excitation windings (1) and a superconducting switch (8) are connected in parallel and then exciting currents are connected. On the basis of conversion of the superconducting switch (8) from a normal state to a superconducting state, a closed-loop constant current effect of the excitation windings (1) is realized. A copper three-phase symmetric primary winding (5) winds around a primary iron core (6); after connection of a three-phase symmetric alternating current by using a star-shaped or triangular connection method, a three-phase travelling wave magnetic field is generated at an air gap; and because of the action with strong magnetic fields generated by the high-temperature superconducting excitation windings (1), large-thrust operation of the linear motor is realized. According to the invention, the linear traction motor is applied to the urban rail traffic and the constraint of vehicle-mounted excitation source is broken. The linear traction motor has advantages of light weight, high thrust density and large work gap and the like.

The invention discloses a full-winding electromagnetic stirring device for a plate billet continuous casting crystallizer and a plate billet continuous casting crystallizer. The electromagnetic stirring device comprises a columnar iron core of which the working surface is not provided with a tooth socket; the non-working surface of the columnar iron core is arranged in an inner water cooling sleeve; a plurality of coils are wound on the working surface of the columnar iron core and the inner water cooling sleeve; the coils on the inner water cooing sleeve are arranged in an outer water cooling sleeve; circulating pipes are arranged in both the inner water cooling sleeve and the outer water cooling sleeve; two ends of each circulating pipeline are respectively communicated with a water pipe connector. The space utilization of a coil winding is improved furthest, the magnetic conduction area of the columnar iron core is increased, and the magnetic field intensity is improved, so the electromagnetic force of the electromagnetic stirring device is increased by 10-20 percent, the production period is shortened by 1 / 3, and the universality is high.

The invention discloses a moving magnet type linear oscillation motor without an inner stator. The moving magnet type linear oscillation motor without the inner stator comprises stator cores and a permanent magnet arranged inside the machine shell, wherein the stator cores are C type cores, the upper tooth part and the lower tooth part of each C type stator core form an N pole and an S pole respectively after an armature winding is arranged, the permanent magnet is arranged between the two stator cores, tooth parts of the two stator cores right face each other, the N pole and the S pole of the two stator cores are opposite, the two poles of the permanent magnet right face the upper tooth parts of the two stator cores and the lower tooth parts of the two stator cores respectively.

The invention discloses a transverse flux magnetic field modulation type linear motor. The linear motor comprises primary bodies and secondary bodies. The two secondary bodies are in a C-shaped, mirror image arrangement, and three air gaps are arranged among the primary body and the secondary bodies. The inner sides of the secondary bodies are provided with a plurality of secondary grooves and a plurality of secondary teeth at equal intervals, and secondary permanent magnets are disposed in the secondary grooves. Each of the primary bodies comprises two same primary iron cores and a connecting beam used for connecting the two primary iron cores. The upper surfaces and the lower surfaces of the primary iron cores and the surfaces of the primary iron cores back to the connecting beams are provided with salient pole teeth, which are arranged at equal intervals, and are the same. The salient pole teeth are provided with salient armature windings in a coiled manner, and are provided with virtual teeth, and virtual grooves are arranged among adjacent virtual teeth, and in addition, virtual groove permanent magnets are disposed in the virtual grooves. Virtual groove armature windings are disposed in the virtual grooves. The three phases of the primary bodies are provided with three phases of armature windings. The armature winding of the same primary body is used to form one phase, and the armature windings of the three primary bodies are used to form three phases, and a difference among currents flowing through the three phases is 120degrees. The transverse flux magnetic field modulation type linear motor adopts modularization design, and has advantages of simple structure, and ability of improving fault-tolerant performance.

The invention relates to a high-power density permanent magnet motor belonging to the field of motors. The invention solves the problems of low efficiency and thrust density, large thrust fluctuation and high vibration and noises of the traditional double-edge ironless straight line permanent magnet synchronous motor, which are caused by low air gap magnetic density and poor sine degree of air gap magnetic density wave forms. An air gap is positioned between a primary pole and a secondary pole of a straight line motor; main permanent magnets and isolated magnets are sequentially arranged on the inner wall of a yoke plate at intervals; the inner sides of the main permanent magnets are provided with assembling magnets which have same widths along a motion direction; the inner sides of the isolated magnets are provided with auxiliary permanent magnets which have same widths along the motion direction; the outer side surfaces of m auxiliary permanent magnets and m assembling magnets are positioned on a same plane; the main permanent magnets are parallelly magnetized in magnetizing directions perpendicular to the motion directions of active cells, and every two adjacent main permanent magnets are in reverse magnetizing directions; the auxiliary permanent magnets are parallelly magnetized in the magnetizing directions parallel to the motion directions of the active cells, and every two adjacent auxiliary permanent magnets are in reverse magnetizing directions.

The disclosure provides a high-acceleration, high-stability high-temperature superconducting maglev vehicle system, including a train system and a track system. The train system includes a car body, a brush arranged on the car body, a low-temperature refrigeration container arranged at the bottom of the car body, Multiple rows of high-temperature superconducting coils and a refrigeration system for cooling multiple rows of high-temperature superconducting coils arranged in a low-temperature refrigeration container; the track system includes a track body, multiple rows of power coils, and multiple rows of suspension guide coils; traveling perpendicular to the car body In the direction of , the multi-row high-temperature superconducting coils, multi-row power coils and multi-row suspension steering coils are all symmetrical to the central axis of the car body, and the power coils and high-temperature superconducting coils are arranged alternately with each other, and the multi-row suspension steering coils are distributed in multiple Columns on both sides of the HTS coils. The disclosed superconducting maglev train system with the above structure can effectively improve the utilization rate of the magnetic field and the power density of the motor, and the train can have higher stability under ultra-high-speed operation.

The invention discloses a full-winding electromagnetic stirring device for a plate billet continuous casting crystallizer and a plate billet continuous casting crystallizer. The electromagnetic stirring device comprises a columnar iron core of which the working surface is not provided with a tooth socket; the non-working surface of the columnar iron core is arranged in an inner water cooling sleeve; a plurality of coils are wound on the working surface of the columnar iron core and the inner water cooling sleeve; the coils on the inner water cooing sleeve are arranged in an outer water cooling sleeve; circulating pipes are arranged in both the inner water cooling sleeve and the outer water cooling sleeve; two ends of each circulating pipeline are respectively communicated with a water pipe connector. The space utilization of a coil winding is improved furthest, the magnetic conduction area of the columnar iron core is increased, and the magnetic field intensity is improved, so the electromagnetic force of the electromagnetic stirring device is increased by 10-20 percent, the production period is shortened by 1 / 3, and the universality is high.

The invention relates to a lens driving motor, a camera and a mobile terminal device.The lens driving motor comprises a shell, a base, an upper spring, a lower spring, a lens supporting body, a coil and a magnet module, the lens supporting body is elastically connected with the shell through the upper spring, and the lens supporting body is elastically connected with the base through the lower spring; the lens support body floats up and down along with the change of the current of the coil, the coil is vertically wound and arranged on the side wall of the lens support body, the magnet module is fixed in a magnetic conductive shell, and the magnetic conductive shell is made of a magnetic conductive material. According to the lens driving motor provided by the invention, the magnetic leakage phenomenon of a traditional motor can be effectively improved, so that the motor distance can be very small, the internal space of a mobile phone and other products is greatly saved, and the lens driving motor has very strong market competitiveness.

The invention discloses a multi-magnet compressor, which comprises four functional parts: an end cover, a stator assembly, a mover assembly, and a suction and discharge assembly. The end cover includes the left and right end covers; the stator assembly includes the iron casing, the permanent magnet, the insulating plate and the piston casing, etc.; the mover assembly includes the coil frame, the coil group, the movable sleeve, the piston, the piston rod, the piston inner sleeve and the inner stator, etc. , the piston is connected with the piston inner sleeve through the piston rod; the suction and exhaust assembly includes a valve cover, a baffle, an exhaust pipe, a buffer plate, a valve plate and a valve seat, etc.; the coil group is two mutual The coil is wound in the opposite direction and fixed in the annular magnetic field composed of permanent magnet blocks through the coil frame. After the current is passed through, the electromagnetic driving force is generated to drive the moving sub-assembly to move, and then the gas is compressed to do work, compressing the low-pressure gas into a high-pressure gas. Gases have pressure energy. The multi-magnet compressor of the invention has the advantages of compact structure, stable operation, low noise and prolonged service life.

The invention discloses a magnetic conductive device of a voice coil motor and the voice coil motor. The magnetic conductive device of the voice coil motor comprises a non-annular magnet cylinder and a magnetic conductive member, wherein a first side surface and a second side surface of the non-annular magnet cylinder are opposite and have different polarities. The magnetic conductive member is provided with a top plate, a bottom plate and a side plate, wherein the side plate is connected between the top plate and the bottom plate, the top plate of the magnetic conductive member covers a top surface of the non-annular magnet cylinder, the side plate of the magnetic conductive member covers the first side surface of the non-annular magnet cylinder. According to the above magnetic conductive device, the stability, electromagnetic thrust and efficiency of the voice coil motor can be raised.

The present disclosure provides a high-thrust high-temperature superconducting linear motor, which includes a mover part and a stator part, and the mover part includes a low-temperature refrigeration container, multiple rows of high-temperature superconducting coils arranged in the low-temperature refrigeration container, and a plurality of rows of high-temperature superconducting coils for cooling multiple rows of high-temperature superconducting coils. Refrigeration system of superconducting coils; the stator part includes a track body, multiple rows of power coils and multiple rows of suspension guide coils; in the direction perpendicular to the travel of the mover part, multiple rows of high temperature superconducting coils, multiple rows of power coils and multiple rows of suspension The guide coils are symmetrical to the central axis of the mover part, there is a row of power coils between two adjacent rows of high-temperature superconducting coils, and a row of high-temperature superconducting coils between two adjacent rows of power coils, and multiple rows of suspension guides The coils are distributed on both sides of multiple columns of high temperature superconducting coils. The maglev train using the superconducting linear motor of the present disclosure can improve the utilization rate of the magnetic field, obtain greater thrust and stability, and enable the train to have a higher running speed.

The invention provides a high-precision slotless permanent magnet motor, relating to the motor field. The motor is used for solving the defects that efficiency and thrust density are low, thrust fluctuation is strong as well as vibration and noise are high, and the problem that secondary weight and motor cost are high. The motor is characterized in that a secondary electromagnetic structure is optimized, thus the secondary weight is decreased, the thrust fluctuation and the cost of the motor are reduced, and air-gap magnetic density, the sine degree of an air-gap field, the electromagnetic thrust of the motor as well as the efficiency and control precision of the motor are improved. The secondary structure comprises master permanent magnets, auxiliary permanent magnets, a magnetic-collecting body and a yoke plate, and the widths of specific side faces among the master permanent magnets, the auxiliary permanent magnets, the magnetic-collecting body and the yoke plate are limited; each master permanent magnet is provided with a rectangle cross section; each auxiliary permanent magnet is provided with a mixed ladder-shaped and rectangle cross section or a mixed rectangle and rectangle cross section; the magnetic-collecting body is provided with a ladder-shaped or rectangle cross section; the master permanent magnets and the auxiliary permanent magnets are successively fixed on the magnetic-conducting yoke plate in a radial arrangement mode; the master permanent magnets, the auxiliary permanent magnets and the magnetic-collecting body are closely coordinated; every two adjacent master permanent magnets are opposite in magnetizing directions; and every two adjacent auxiliary permanent magnets are opposite in magnetizing directions.

The invention belongs to the technical field of airplane hydraulic pressure, and discloses a high-thrust wet-type electromagnet which comprises a magnetizer fixed in position and an iron core assembly capable of axially moving back and forth relative to the magnetizer, and the magnetizer and the iron core assembly are sleeved with a coil assembly. Wherein the iron core assembly comprises an iron core, a push rod and a pressing sleeve, the left end of the push rod is arranged in the magnetizer, a gap is formed between the left end of the push rod and the magnetizer, the right end of the push rod is arranged in the iron core and drives the movable iron core to move axially, the right end of the push rod is arranged in the pressing sleeve, and when the iron core assembly is located at the right limiting position, the iron core assembly abuts against the soft magnet. According to the high-thrust wet type electromagnet, the thrust is remarkably increased, the size is not increased, the production efficiency is additionally improved, and the effect is remarkable.

The invention discloses a transverse flux magnetic field modulation type linear motor. The linear motor comprises primary bodies and secondary bodies. The two secondary bodies are in a C-shaped, mirror image arrangement, and three air gaps are arranged among the primary body and the secondary bodies. The inner sides of the secondary bodies are provided with a plurality of secondary grooves and a plurality of secondary teeth at equal intervals, and secondary permanent magnets are disposed in the secondary grooves. Each of the primary bodies comprises two same primary iron cores and a connecting beam used for connecting the two primary iron cores. The upper surfaces and the lower surfaces of the primary iron cores and the surfaces of the primary iron cores back to the connecting beams are provided with salient pole teeth, which are arranged at equal intervals, and are the same. The salient pole teeth are provided with salient armature windings in a coiled manner, and are provided with virtual teeth, and virtual grooves are arranged among adjacent virtual teeth, and in addition, virtual groove permanent magnets are disposed in the virtual grooves. Virtual groove armature windings are disposed in the virtual grooves. The three phases of the primary bodies are provided with three phases of armature windings. The armature winding of the same primary body is used to form one phase, and the armature windings of the three primary bodies are used to form three phases, and a difference among currents flowing through the three phases is 120degrees. The transverse flux magnetic field modulation type linear motor adopts modularization design, and has advantages of simple structure, and ability of improving fault-tolerant performance.

The invention disclose a displacement control mode of a rotor of a direct-drive switched-reluctance planar motor, belongs to the field of electromechanical control researches, and specifically relates to a displacement control of a rotor of a direct-drive switched-reluctance planar motor. The displacement control mode disclosed by the invention is characterized in that the displacement motion of a rotor 7 of a direct-drive switched-reluctance planar motor is changed cyclically, and the cycle of motion of the rotor 7 is equal to the pole pitch of a stator 9 and is 12-24 mm; and through dividing each cycle of motion into six equal parts, the control mode disclosed by the invention has the advantages that the power-on states of rotor windings are determined according to six different positions of the rotor 7 relative to a stator 8, because the cycle of motion of the rotor 7 is equal to the pole pitch of the stator 9, each rotor winding is equal in power-on time and displacement, so that the rotor 7 operates stably, thereby facilitating the accurate positioning of the rotor 7; and two phases of rotor windings are power-on simultaneously, so that the electromagnetic thrust of the rotor 7 is increased, and the running speed of the rotor 7 is increased.