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34results about How to "Improve flux utilization" patented technology
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Permanent magnet synchronous motor with two stators, composite rotor structure and radial and axial mixed magnetic paths and method thereof
ActiveCN105790470AHigh torque densityHigh power densityMagnetic circuit rotating partsElectric machinesElectric machinePermanent magnet synchronous motor
The invention discloses a permanent magnet synchronous motor (PMSM) with two stators, a composite rotor structure and radial and axial mixed magnetic paths and a method thereof. The PMSM comprises a radial stator, an axial stator and a rotor, wherein the rotor is inserted in the radial stator and coaxially arranged with the radial stator, the axial stator is arranged on one end or two ends of the rotor, the axial stator and the rotor are concentric, a radial winding is arranged in the stator groove of the radial stator, an axial winding is arranged in the stator groove of the axial stator, a rotor groove is arranged in the rotor, a permanent magnet is placed in the rotor groove, the permanent magnet enables the rotor to generate a radial magnetic pole and an axial magnetic pole, the radial magnetic pole faces the radial stator of the motor, the axial magnetic pole faces the axial stator of the motor, and the motor generates radial and axial torques to form mixed magnetic paths. The radial magnetic flux and axial magnetic flux generated by the permanent magnet of the motor can be utilized, end portion magnetic leakage can be eliminated, the utilization rate of motor material is improved, and the weight of the motor is reduced.
Owner:SHANDONG UNIV
Double-rotor hybrid excitation permanent magnet synchronous motor for electric vehicle and method thereof
PendingCN108418368AAdequate heat dissipationImprove compactnessSynchronous machine detailsMagnetic circuit rotating partsElectric machinePermanent magnet synchronous motor
The invention discloses a double-rotor hybrid excitation permanent magnet synchronous motor for an electric vehicle and a method thereof. The motor comprises a radial stator, an axial rotor and a radial rotor. The radial rotor is placed inside the radial stator and is coaxially arranged with the radial stator. The radial rotor is provided with the axial rotor at the end portion, and the axial rotor is coaxially arranged with the radial rotor. The axial rotor is driven by a servo motor to rotate, so that the axial rotor and the radial rotor maintain the same rotational speed. The radial rotor is provided with a permanent magnet thereon. A part of the magnetic flux generated by the permanent magnet enters the radial stator through a radial gap to generate a radial main magnetic flux, and theother part enters the axial rotor through an axial air gap to generate an axial main magnetic flux. The axial magnetic flux and the radial magnetic flux are in a parallel relationship. The axial magnetic flux of the radial rotor can be adjusted by changing the relative positions of the axial rotor and the radial rotor. Therefore, the radial magnetic flux of the radial rotor is indirectly controlled, the hybrid excitation function is achieved and the economic operating range of the electric vehicle drive motor is expanded.
Owner:SHANDONG UNIV
High-power density electric motor with characteristics of axial and transverse magnetic fields
InactiveCN101969241AImprove power densityImprove power performanceMagnetic circuit rotating partsMagnetic circuit stationary partsElectric machineTransverse magnetic field
The invention provides a high-power density electric motor with characteristics of axial and transverse magnetic fields. The high-power density electric motor is a permanent magnet motor which is of a disk type structure and composed of a stator, a rotor, an end cap, a shaft, a stator bearing and an end cap bearing. The rotor is arranged on the shaft, the two ends of the shaft are respectively mounted with the stator bearing and the end cap bearing; the stator bearing is mounted in a stator bearing chamber, the end cap bearing is arranged in an end cap bearing chamber; the stator and the end cap are fixed together through a through hole on a magnet ring at the outside of the stator and a screwed hole on the end cover by using a screw. The high-power density electric motor of the inventionimproves the structure of the traditional electric motor and the placement of an armature winding, so that the end of the armature winding can also be involved in electromechanical energy conversion of the electric motor; and as a result, power density and overall performance of the electric motor are improved.
Owner:HARBIN ENG UNIV
Monostable permanent magnet control mechanism with multiple force output air gaps
InactiveCN101320634ASave electricityImprove reliabilitySwitch power arrangementsHigh-tension/heavy-dress switchesEngineeringElectric power
The invention provides a multi-strength gap monostable permanent magnet driven mechanism. A permanent magnet of the driven mechanism is mounted between a fourth silicon-steel sheet group and a third silicon-steel sheet group of a fixed core, while B permanent magnet is mounted between the third silicon-steel sheet group and a second silicon-steel sheet group of the fixed core. Lower end surface of the fixed core is mounted on a connection board. The fixed core is put relatively to a moving core, and an on and off coil is sleeved on a lower central post of the fixed core. An on and off spring, which is sleeved on upper central post of the moving core, is located above the on and off coil. Upper end of a transmission rod orderly runs through a central hole of the connection board, a second central through hole of the fixed core and a first central through hole of the moving core, then runs through A pin hole, B pin hole, D pin hole and C pin hole by pins, and connection with one end of the transmission rod by the moving core is implemented. The multi-strength gap monostable permanent magnet driven mechanism of the invention is able to coordinate with power electronic device to perform millisecond movement, meet disconnection time demand of mechanical contact and implement quick on and off movement of an operation mechanism.
Owner:BEIHANG UNIV +1
High-power density motor with multidirectional magnetic field
InactiveCN101986530AImprove power densityImprove power performanceMagnetic circuit rotating partsMagnetic circuit stationary partsElectric machineEngineering
The invention provides a high-power density motor with a multifunctional magnetic field, which comprises a stator, a middle rotor, a left rotor, a right rotor, a left bearing, a right bearing and a hollow shaft, wherein the stator is fixed on the hollow shaft; the left and right rotors are positioned on the left and right sides of the stator respectively and connected with the hollow shaft through the left bearing and the right bearing respectively; the middle rotor is positioned between the left and right rotors and fixedly connected with the left and right rotors respectively; and the hollow shaft is fixed with other outside devices. The high-power density motor is an outer rotor permanent motor characterized in axial, radial and transverse magnetic field motors. The structure of the traditional motor and the placement mode of armature winding are improved and the end part of the winding can also be participated in the electromechanical energy conservation of the motor, so that the power density and the overall performance of the motor are improved.
Owner:HARBIN ENG UNIV
LED light source
InactiveCN103363353AReduce wasted lightImprove luminous flux utilizationPoint-like light sourceElectric lightingPhysicsLight source
The invention discloses an LED light source and an LED light source module formed by a plurality of the LED light sources. The LED light source comprises an LED luminous body and a reflector set, wherein the reflector set comprises two or more reflector units which are mutually independent; the horizontal cross section outline of the inner surface of each reflector unit is a straight line, or an inner arc-shaped curve, or an outer arc-shaped curve, or the combination of two line shapes; all reflector units are respectively arranged in different positions of the exterior of the LED luminous body, one reflector unit is respectively arranged before and after the front and rear sides of the LED luminous body, and the side wall of the reflector set is not closed, or discontinuous; one part of the ray sent out by the LED luminous body is reflected by the inner surface of the reflector set. The LED light source provided by the invention can achieve reasonable unsymmetric form batwing light distribution suitable for street lighting, so as to enable more rays to be guided to a direction having lighting utilization value, and unnecessary ray waste is reduced.
Owner:ADVANCED OPTRONIC DEVICES CHINA
Gantry submerged arc welding machine with automatic welding flux adjusting and drying functions
ActiveCN111299772AReduce labor intensityHigh control precisionSievingScreeningEngineeringElectromagnetic valve
The invention discloses a gantry submerged arc welding machine with automatic welding flux adjusting and drying functions, and relates to the field of gantry submerged arc welding machine equipment. The machine comprises a main machine, a welding cabinet, a welding gun, a guide rail, welding flux, a welding wire, a welding wire channel, an automatic welding flux adjusting device and an automatic welding flux drying device, the recovered welding flux is automatically filtered and dried through the welding flux automatic drying device, and the electromagnetic valve is matched with the relay to achieve automatic control over the welding flux flow. The control precision is high, operation is easy, safety and reliability are achieved, the welding process and the welding quality are improved, the welding flux recycling amount is reduced, the welding flux utilization rate is increased, the labor intensity of workers is relieved, and the working efficiency and the welding process level are improved; and a stepped filtering mode is adopted, so that the filtering effect is improved, the impurity rate of the welding flux is reduced, and welding gas and waste discharge is reduced; and moisturein the welding flux can be removed through filtering and heating, and meanwhile the welding flux is separated from impurities.
Owner:CHANGCHUN WEICHENG MASCH EQUIP CO LTD
Dual three-phase permanent magnetic synchronous motor, electric automobile and method of dual three-phase permanent magnetic synchronous motor
ActiveCN109361300AReduce radial electrical loadReduce magnetic loadAC motor controlMagnetic circuit rotating partsConstant powerSynchronous motor
The invention provides a dual three-phase permanent magnetic synchronous motor, an electric automobile and a method of the dual three-phase permanent magnetic synchronous motor. Compared with a traditional multi-phase motor, dual three-phase permanent magnetic synchronous motor has the advantages that by placing an axial stator on an end portion of a rotor, the end portion of the rotor is made full use of, magnetic leakage effect of the end portion is reduced, a use ratio of a permanent magnet is increased, a better magnetism gathering effect can be generated since a permanent magnet is placedon a surface of an axial end of the rotor of the motor, the motor is enabled to be higher in iron core magnetic flux density and air gap magnetic flux density, a use ratio of an iron core material ofthe motor is increased, weight of the motor is reduced, power density and torque density of the motor are increased remarkably, and the weight of the motor is furtherly reduced; a magnetic circuit ofan axial end portion, without the permanent magnet, of the rotor of the motor is parallelly connected with a radial magnetic circuit of the motor, by regulating the mixed magnetic circuits, an operation range of constant power of the motor can be enlarged, and the defect that the power density and efficiency are decreased after the operation range of the constant power of a traditional permanentmagnetic synchronous motor is enlarged is overcome.
Owner:SHANDONG UNIV
Design method of remanent magnetism mechanism of recombiner and remanent magnetism mechanism
InactiveCN101702381ALow magnetic lossLow eddy current lossSwitch power arrangementsHigh-tension/heavy-dress switchesElastomerMagnetic tension force
The invention relates to a design method of a remanent magnetism mechanism of a recombiner and a remanent magnetism mechanism. The design method uses silicon iron as the material of the magnetic conduction loop of the remanent magnetism mechanism of the recombiner, and concretely comprises the following steps: (1) making the silicon iron material into a magnetic yoke; arranging a cavity in the magnetic yoke, and arranging a closing coil in the cavity; arranging a through hole in the middle of the bottom of the cavity; (2) arranging a movable iron core in the middle of the closing coil, and driving a pull rod by using the movable iron core; arranging an elastomer in the middle of the closing coil, wherein the elasticity of the elastomer onto the movable iron core is opposite to the direction of the magnetic force of the electrified closing coil onto the movable iron core, so the elastomer and the closing coil control the movement of the movable iron core in the axial direction of the closing coil together; the pull rod penetrating through the through hole from the bottom of the cavity; and (3) using the external wall of the magnetic yoke as the casing of the remanent magnetism mechanism of the recombiner. Compared with similar mechanisms, the technical scheme of the invention has the advantages of stable performance, low energy consumption and long service life of the electronic control device, and is especially suitable for 24kV recombiners.
Owner:NANJING INTELLIGENT DISTRIBUTION AUTOMATION EQUIP
High-stiffness high-damping axial passive magnetic bearing with magnetic circuit decoupling function
InactiveCN108757730AHigh magnetic density uniformityRealize structural integrationShaftsRotary machine partsMagnetic bearingFlux loop
The invention discloses a high-stiffness high-damping axial passive magnetic bearing with a magnetic circuit decoupling function. The high-stiffness high-damping axial passive magnetic bearing comprises a stator system and a rotor system; the stator is connected with a base of equipment, and the rotor system is connected with a rotating part of the equipment. The stator system mainly comprises mounting sleeves, magnetic conducting rings, magnetic isolating rings, pieces of radial magnetizing magnetic steel, pieces of axial magnetizing magnetic steel, paramagnetic rings, magnetic steel lock nuts, fixing seats, and assembly lock nuts; and the rotor system mainly comprises rotating shafts, rotor magnetic isolating rings, rotor magnetic conducting rings, damping sleeves, rotor magnetic isolating rings and rotor assembly lock nuts. According to the high-stiffness high-damping axial passive magnetic bearing, the multiple circles of magnetic steel are adopted to enable magnetic flux to converge, the magnetic field intensity of an air gap is improved, and high-stiffness supporting is realized; through the scheme of internal arranging of the magnetic steel, the magnetic flux density uniformity of the air gap is improved, and interference force to the rotor system is not generated; high damping is achieved through the multiple circles of damping sleeves, in addition, all magnetic circuits are closed, magnetic flux leakage is reduced, and the utilizing rate of the magnetic flux is increased; and a magnetic flux loop for supporting and a magnetic flux loop realizing damping are mutually decoupled, and thus optimized design can be conducted on the supporting stiffness and damping of the magnetic bearing.
Owner:BEIJING INSTITUTE OF PETROCHEMICAL TECHNOLOGY
LED light source
InactiveCN103363353BImprove light uniformityImprove flux utilizationPoint-like light sourceElectric lightingOptoelectronicsLight source
The invention discloses an LED light source and an LED light source module formed by a plurality of the LED light sources. The LED light source comprises an LED luminous body and a reflector set, wherein the reflector set comprises two or more reflector units which are mutually independent; the horizontal cross section outline of the inner surface of each reflector unit is a straight line, or an inner arc-shaped curve, or an outer arc-shaped curve, or the combination of two line shapes; all reflector units are respectively arranged in different positions of the exterior of the LED luminous body, one reflector unit is respectively arranged before and after the front and rear sides of the LED luminous body, and the side wall of the reflector set is not closed, or discontinuous; one part of the ray sent out by the LED luminous body is reflected by the inner surface of the reflector set. The LED light source provided by the invention can achieve reasonable unsymmetric form batwing light distribution suitable for street lighting, so as to enable more rays to be guided to a direction having lighting utilization value, and unnecessary ray waste is reduced.
Owner:ADVANCED OPTRONIC DEVICES CHINA
LED (light emitting diode) lens and lens module thereof
The invention discloses an LED lens and a lens module thereof. The LED lens comprises a light scattering unit, a reflecting unit and a base, wherein the profile of the outer surface of the C0-180 section of the light scattering unit is hemispherical or similarly hemispherical; the profile of the inner surface of the C0-180 section of the light scattering unit is conical or similarly conical; the profiles of the outer surface and the inner surface of a C90-270 section of the light scattering unit are asymmetric; the reflecting unit is positioned on one side of the light scattering unit; the LED lens is provided with an inner cavity; the surface of the inner cavity is the inner surface of the LED lens; the vertex of the outer surface of the light scattering unit is vertically aligned with the vertex of the inner surface of the LED lens; and the LED lens module consists of a plurality of LED lenses. By the illumination function of the LED lens, asymmetric batwing light distribution applicable to street illumination can be realized, total reflection of the surface of the lens is effectively reduced, a plurality of light rays can exit at one step and illuminate the area of a road surface, and the use ratio on luminous flux of illumination can be increased.
Owner:ADVANCED OPTRONIC DEVICES CHINA
Permanent magnet motor rotor and motor
PendingCN112671138AReduce magnetic flux leakageReduce vibrationMagnetic circuit rotating partsMotor speedElectric machine
The invention discloses a permanent magnet motor rotor and a motor. The permanent magnet motor rotor comprises a rotor assembly, 2n (n=1, 2, 3...) built-in rectangular grooves are formed in the rotor assembly along the circumferential surface, the rectangular grooves are linear, magnetic isolation edges are arranged at the two ends of the outer sides of the rectangular grooves, magnetic isolation bridges are arranged at the positions of central symmetry lines of the rectangular grooves, and the number of the magnetic isolation bridges can be set to be zero when the linear speed Vtip of the motor rotor is low, otherwise, the number can be set to be one. According to the linear speed (mechanical centrifugal force of the outer surface of the rotor) of the rotor, the width of the magnetic isolation edges and the number and width of the magnetic isolation bridges are reasonably designed, so that the rotor assembly and the permanent magnets do not move left and right in the rectangular grooves, and the mechanical strength under the centrifugal force is guaranteed; therefore, the magnetic field effect and the output electrical performance of the motor are satisfied, the vibration resistance of the motor rotor is improved, and the rotating speed range of the motor is effectively expanded.
Owner:WUXI NEW GREAT POWER ELECTRICAL MACHINE
Stator duplex-winding permanent magnet motor with alternating current magnetic regulation
ActiveCN113346656AImprove magnetic gathering abilityImprove flux utilizationMagnetic circuit rotating partsMagnetic circuit stationary partsMagnetoEngineering
The invention discloses a stator duplex-winding permanent magnet motor with alternating current magnetic regulation. The permanent magnet motor comprises a stator assembly and a rotor assembly which are coaxially installed, the rotor assembly is located in the stator assembly, the stator assembly comprises a stator iron core, an armature winding and an excitation winding, the rotor assembly comprises a transmission shaft, a rotor iron core and tangential permanent magnets, a plurality of magnetic barriers which are symmetrical about the center of the transmission shaft are arranged in the rotor iron core, and the magnetic barriers are cavities extending in the axial direction of the rotor iron core; the armature winding and the excitation winding are located in a stator groove of the stator iron core, the tangential permanent magnets are embedded and installed in the rotor iron core at intervals, and the magnetizing directions of the adjacent tangential permanent magnets are opposite; and the two sides of each tangential permanent magnet are each provided with a magnetic barrier, the rotor iron core part between the adjacent magnetic barriers forms a main magnetic pole of the rotor assembly, and the stator iron core and the rotor iron core are separated by a main air gap. According to the invention, by controlling the amplitude and phase of the excitation winding current, efficient adjustment of the main air-gap magnetic field of the permanent magnet motor is realized.
Owner:NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
Permanent magnetic differential drive mechanism
InactiveCN104852551ARealize differential transmissionAids in torque transmissionDynamo-electric gearsEngineeringElectrical and Electronics engineering
The invention discloses a permanent magnetic differential drive mechanism, comprising an inner shaft, an outer shaft, permanent magnetic rotors and magnetic conductive rotors. The magnetic conductive rotors comprise first ferromagnetic blocks and second ferromagnetic blocks arranged oppositely in pairs. The inner shaft is connected with the outer shaft through a bearing. The inner shaft is connected with the permanent magnetic rotors. The peripheral surface of the inner shaft is provided with two rows of raised grooves. The permanent magnetic rotors are distributed between the two rows of raised grooves. The amount ratio of the permanent magnetic rotors and the magnetic conductive rotors is one to two, and the permanent magnetic rotors and the magnetic conductive rotors are distributed at equal interval. One end of the first ferromagnetic block and one end of the second ferromagnetic block are connected with the outer shaft through sliding grooves. The other ends respectively contact with the two rows of raised grooves of the inner shaft through connecting plates. The first ferromagnetic blocks and the second ferromagnetic blocks rotate with rotation of the inner shaft, after sliding along the raised groove through the connecting plates, the first ferromagnetic blocks and the second ferromagnetic blocks are switched between opposite keeping-away separation and relative close along the groove rails of the sliding grooves. The permanent magnetic differential drive mechanism can still continuously output torque forward under condition of maintaining differential velocity through changing magnetic circuits, and volume is reduced and structure is simplified, and energy lost in sliding friction can be reduced, so as to improve transmission efficiency.
Owner:NANJING INST OF TECH
A permanent magnet differential transmission mechanism
InactiveCN104852551BRealize differential transmissionAids in torque transmissionDynamo-electric gearsPermanent magnet rotorFriction loss
The invention discloses a permanent magnet differential transmission mechanism, which comprises an inner shaft, an outer shaft, a permanent magnet rotor and a magnetically permeable rotor. The magnetically permeable rotor includes a first ferromagnetic block and a second ferromagnetic block arranged in pairs; The shaft is connected to the outer shaft through bearings, and the inner shaft is connected to the permanent magnet rotor. Two rows of convex grooves are arranged on the circumferential surface of the inner shaft, and the permanent magnet rotor is distributed between the two rows of convex grooves; the ratio of the number of permanent magnet rotors to magnetically conductive rotors 1:2, evenly spaced; one end of the first ferromagnetic block and the second ferromagnetic block are connected to the outer shaft through the sliding groove, and the other end is respectively in contact with the two rows of convex grooves of the inner shaft through the connecting plate. As the inner shaft rotates, after the connecting plate slides along the protruding groove, along the groove track of the sliding groove, switching is performed between facing away from each other and relatively close to closing. Through the change of the magnetic circuit, the positive output torque can still be maintained under the condition of differential speed, the volume is reduced, the structure is simplified, and the energy lost in sliding friction can be reduced at the same time, and the transmission efficiency can be improved.
Owner:NANJING INST OF TECH
Hybrid magnetic circuit low harmonic multi-stator field-weakening extended-speed permanent magnet synchronous motor and method thereof
ActiveCN105763009BAdequate heat dissipationFull utilization of heat dissipationMagnetic circuit rotating partsMagnetic circuit stationary partsElectric machineHarmonic
The invention discloses a hybrid magnetic circuit low harmonic wave multi-stator flux-weakening speed extension permanent magnet synchronous motor, and a method thereof. The hybrid magnetic circuit low harmonic wave multi-stator flux-weakening speed extension permanent magnet synchronous motor includes a radial stator, an axial stator and a rotor, wherein the rotor is arranged in the radial stator, and is arranged coaxially with the radial stator; the axial stator is arranged at the end part of the rotor, and is arranged concentrically with the rotor; permanent magnets are arranged in the rotor, and are used for generating radial magnetic poles and axial magnetic poles; one part of the magnetic flux generated from each permanent magnet enters the corresponding radial stator through the corresponding radial magnetic pole and then forms a radial main magnetic flux with a radial armature winding crosslink; the other part of the magnetic flux generated from the permanent magnet enters the axial stator through the axial magnetic pole, and then forms an axial main magnetic flux with an axial armature winding crosslink; and the radial main magnetic flux is connected with the axial magnetic flux in parallel. The hybrid magnetic circuit low harmonic wave multi-stator flux-weakening speed extension permanent magnet synchronous motor, and the method thereof have the advantages of eliminating the magnetic leakage effect of the end part, improving the utilization rate of the motor material, reducing the weight of the motor, improving the power density, flexibly realizing magnetic enhancing operation and flux-weakening speed extension operation, and widening the economic operation range of the motor.
Owner:SHANDONG UNIV
An Active Suspension Dual Drive Crane
ActiveCN108506342BNo friction and wearUnnecessary generationTravelling gearBearingsMagnetic bearingWorking environment
The invention discloses an active-suspension double-drive crown block which mainly comprises a stator portion and a mover portion; the stator portion comprises a frame, an upper permanent magnet biased magnetic bearing, a left permanent magnet biased magnetic bearing, a right permanent magnet biased magnetic bearing, a lower passive suspension permanent magnet and a guide rail; and the mover portion comprises a moving frame, a mover permanent magnet and a baffle plate. Double-edge permanent magnets are arranged on the inner side and the outer side of a winding coil respectively, so that the gap flux density uniformity and the magnetic field intensity are improved; by coupling a drive magnetic flux and a suspension magnetic flux, the magnetic flux utilization ratio is increased; by adoptingtwo kinds of novel permanent magnet biased magnetic bearings, longitudinal and transverse translation control of the moving frame of the crown block is realized; and in addition, by decoupling of anaxial magnetic flux and a transverse magnetic flux, the control accuracy is improved. The active-suspension double-drive crown block provided by the invention has the advantages of high positioning accuracy, large drive force, rapidness in transportation speed, compact structure, capability of active vibration control and the like and is suitable for high-cleanliness working environment of semiconductor transportation and the like.
Owner:BEIJING INSTITUTE OF PETROCHEMICAL TECHNOLOGY
Multi-phase permanent magnet synchronous drive motor, application and method thereof
ActiveCN109217602BIncrease cooling areaIncrease the total electric heating loadMagnetic circuit rotating partsSynchronous machines with stationary armatures and rotating magnetsMagnetic effectElectric machine
Owner:山东艾克索仑电气有限公司
A control method for a dual-stator compound structure rotor radial-axial hybrid magnetic circuit permanent magnet synchronous motor
ActiveCN105790470BAdequate heat dissipationFull utilization of heat dissipationMagnetic circuit rotating partsElectric machinesPermanent magnet synchronous motorMagnetic poles
Owner:SHANDONG UNIV
A Passively Suspended Double Drive Low Load Crane
ActiveCN108483254BUnnecessary generationEfficient use of effective lengthTravelling gearBearingsLow loadVolumetric Mass Density
Owner:BEIJING INSTITUTE OF PETROCHEMICAL TECHNOLOGY
Double three-phase permanent magnet synchronous drive motor, electric vehicle and method thereof
ActiveCN109361300BImprove cooling effectIncrease the total electric heating loadAC motor controlMagnetic circuit rotating partsMagnetic effectSynchronous motor
The invention provides a dual three-phase permanent magnetic synchronous motor, an electric automobile and a method of the dual three-phase permanent magnetic synchronous motor. Compared with a traditional multi-phase motor, dual three-phase permanent magnetic synchronous motor has the advantages that by placing an axial stator on an end portion of a rotor, the end portion of the rotor is made full use of, magnetic leakage effect of the end portion is reduced, a use ratio of a permanent magnet is increased, a better magnetism gathering effect can be generated since a permanent magnet is placedon a surface of an axial end of the rotor of the motor, the motor is enabled to be higher in iron core magnetic flux density and air gap magnetic flux density, a use ratio of an iron core material ofthe motor is increased, weight of the motor is reduced, power density and torque density of the motor are increased remarkably, and the weight of the motor is furtherly reduced; a magnetic circuit ofan axial end portion, without the permanent magnet, of the rotor of the motor is parallelly connected with a radial magnetic circuit of the motor, by regulating the mixed magnetic circuits, an operation range of constant power of the motor can be enlarged, and the defect that the power density and efficiency are decreased after the operation range of the constant power of a traditional permanentmagnetic synchronous motor is enlarged is overcome.
Owner:SHANDONG UNIV
A gantry submerged arc welding machine with automatic flux adjustment and drying functions
ActiveCN111299772BReduce labor intensityHigh control precisionSievingScreeningSolenoid valveEngineering
A gantry submerged arc welding machine with functions of automatic flux adjustment and drying, relating to the field of gantry submerged arc welding equipment, including a host, a welding cabinet, a welding torch, guide rails, solder, welding wire, a welding wire channel, an automatic flux adjustment device and The flux automatic drying device automatically adjusts the amount of flux through the flux automatic adjustment device, and automatically filters and dries the recovered flux through the flux automatic drying device. The electromagnetic valve and relay are used to automatically control the flux flow, with high control precision, simple operation, safety and reliability, which improves the welding process and welding quality, reduces the amount of recycled flux, improves the utilization rate of flux, and reduces the labor intensity of personnel. , Improve work efficiency and welding process level. The stepped filter method is adopted to improve the filter effect, reduce the impurity rate of welding flux, and reduce the emission of welding gas and waste. The use of filtration and heating can remove the moisture in the flux, and at the same time separate the flux from impurities.
Owner:CHANGCHUN WEICHENG MASCH EQUIP CO LTD
A torque-driven method for a solid-rotor permanent-magnet synchronous motor with hybrid magnetic circuits, double-stators, field-weakening, and speed-expanding
ActiveCN105680652BAdequate heat dissipationFull utilization of heat dissipationMagnetic circuit rotating partsSynchronous machines with stationary armatures and rotating magnetsElectric machinePermanent magnet synchronous motor
Owner:SHANDONG UNIV
Field-weakening multi-stator six-phase permanent magnet synchronous drive motor, electric vehicle and method thereof
ActiveCN109194071BDifficulty dissipating heatImprove cooling effectMagnetic circuit rotating partsElectric machinesElectric machineEngineering
Owner:SHANDONG UNIV
Multi-force output air gap monostable permanent magnet control mechanism with manual emergency switching mechanism
ActiveCN101320637BSave electricityImprove reliabilityContact driving mechanismsHigh-tension/heavy-dress switchesAviationBrake
The invention discloses a multi-output air gap monostabtle permanent magnetic operating mechanism with manual emergency break-brake mechanism; the permanent magnetic operating mechanism comprises a movable core, a fixed core, a break-closing coil, a break-brake spring, a transmission rod, a supporting plate, a fixed plate, an emergency break-brake mechanism, a connecting piece, a rotating shaft, an A permanent magnet and a B Permanent magnet; the A permanent magnet has the same structure with the B Permanent magnet; the movable core is located under the fixed core; and an A clearance, a C clearance and a B clearance are located between the movable core and the fixed core; one side plate of the supporting plate is mounted with the fixed plate; the supporting plate is mounted on the A lug boss of the C tablet, B lug boss of the D tablet; one end of the break-brake spring is mounted on the fixed plate; the other end of the break-brake spring is mounted on the hanger of angle plate of therotating shaft; the emergency break-brake mechanism is mounted between the C tablet and D tablet of the fixed core; one end of the connecting piece is mounted on the transmission rod; the other end of the connecting piece is mounted on the dummy club of the rotating shaft. The operating mechanism of the invention uses little moving elements to achieve relatively high mechanism operating performance; and in the moving process, the mechanical parts have little abrasion, low failure rate, convenient manufacturing technique and are suitable for aviation and ground mesolow electrical switching field and realize the purpose of rapidly breaking brake and saving energy and reducing consumption.
Owner:BEIHANG UNIV +1
A multi-stator hybrid magnetic circuit permanent magnet synchronous motor and method
ActiveCN105703583BFull utilization of heat dissipationImprove compactnessMagnetic circuit rotating partsElectric machinesElectric machinePermanent magnet synchronous motor
The invention discloses a multi-stator hybrid magnetic circuit permanent magnet synchronous motor and method. The multi-stator hybrid magnetic circuit permanent magnet synchronous motor comprises a radial stator, an axial stator and a rotor, wherein the rotor is sheathed in the radial stator and is coaxially arranged with the radial stator, the axial stator is arranged at one or both ends of the rotor, and the axial stator and the rotor are concentrically arranged; a radial winding is arranged in a stator groove of the radial stator, and an axial winding is arranged in the stator groove of the axial stator; a rotor groove is formed on the rotor, a permanent magnet is placed in the rotor groove, the permanent magnet generates a radial magnetic pole and an axial magnetic pole on the rotor, the radial magnetic pole faces to the radial stator of the motor, and the axial magnetic pole faces to the axial stator of the motor, so torques are formed in the radial and axial directions of the motor to form a hybrid magnetic circuit. According to the multi-stator hybrid magnetic circuit permanent magnet synchronous motor disclosed by the invention, the radial magnetic flux and the axial magnetic flux generated by the permanent magnet of the motor are utilized, a magnetic flux leakage effect at end parts is eliminated, the material utilization rate of the motor is improved, and the weight of the motor is reduced.
Owner:SHANDONG UNIV
Hybrid magnetic circuit permanent magnet synchronous motor for electric automobile and driving method thereof
ActiveCN112398301AImprove cooling effectImprove compactnessElectronic commutation motor controlAC motor controlMagnetic effectElectric machine
The invention provides a hybrid magnetic circuit permanent magnet synchronous motor for an electric automobile and a driving method of the hybrid magnetic circuit permanent magnet synchronous motor. The hybrid magnetic circuit permanent magnet synchronous motor comprises radial stators, an axial winding, radial windings and solid rotors, and the two sections of coaxially connected rotors are arranged in the two radial stators and are coaxially arranged with the radial stators; the axial winding is concentrically placed in the middle of the two sections of rotors and equally divides the rotorsinto two parts in the axial direction, permanent magnets are placed in the rotors to generate radial magnetic poles and axial magnetic poles, and one part of magnetic flux generated by the permanent magnets enters the radial stators through the radial magnetic poles and then is interlinked with a radial armature winding to form radial main magnetic flux; the other part is linked with an axial armature winding through the axial magnetic poles to form axial main magnetic flux and finally returns to the permanent magnet of the rotor on the other side, and the radial main magnetic flux is connected with the axial main magnetic flux in parallel; according to the invention, the magnetic flux leakage effect of the end part of the motor is weakened, the material utilization rate is improved, the power density is improved, the magnetism-increasing operation and the flux-weakening speed-expanding operation can be flexibly realized, and the economic operation range of the motor is broadened.
Owner:SHANDONG UNIV
An electromagnetic heating coil and an electromagnetic cooker that are reversely wound one by one
InactiveCN104703313BAvoid canceling problemsIncrease profitDomestic stoves or rangesCoil arrangementsInduction motorEngineering
The invention discloses a cycle-based inverted winding type electromagnetic heating wire coil and an induction cooker. The electromagnetic heating wire coil comprises a rack and a coil winding; the rack comprises a plurality of concentric annular coiling grooves, wire feeding grooves, wire discharging grooves and reversing reducing grooves; the coil winding coils into the coiling grooves, wherein the coil winding is reduced in the reversing reducing grooves and then returns to enter the adjacent winding grooves to be reversely wound after coiling in a plurality of layers in the coiling grooves. The induction cooker adopting the electromagnetic heating wire coil can avoid the problem that the magnetic fluxes generated nearby by a coil between adjacent loops cancel each other out in the traditional one-way winding method; therefore, the utilization rate of the magnetic flux generated by the coil can be increased, and uniform heating can be achieved.
Owner:FUJIAN NORMAL UNIV
Multi-force output air gap monostable permanent magnet control mechanism with manual emergency switching mechanism
ActiveCN101320637ASave electricityImprove reliabilityContact driving mechanismsHigh-tension/heavy-dress switchesFailure rateAviation
The invention discloses a multi-output air gap monostabtle permanent magnetic operating mechanism with manual emergency break-brake mechanism; the permanent magnetic operating mechanism comprises a movable core, a fixed core, a break-closing coil, a break-brake spring, a transmission rod, a supporting plate, a fixed plate, an emergency break-brake mechanism, a connecting piece, a rotating shaft, an A permanent magnet and a B Permanent magnet; the A permanent magnet has the same structure with the B Permanent magnet; the movable core is located under the fixed core; and an A clearance, a C clearance and a B clearance are located between the movable core and the fixed core; one side plate of the supporting plate is mounted with the fixed plate; the supporting plate is mounted on the A lug boss of the C tablet, B lug boss of the D tablet; one end of the break-brake spring is mounted on the fixed plate; the other end of the break-brake spring is mounted on the hanger of angle plate of the rotating shaft; the emergency break-brake mechanism is mounted between the C tablet and D tablet of the fixed core; one end of the connecting piece is mounted on the transmission rod; the other end of the connecting piece is mounted on the dummy club of the rotating shaft. The operating mechanism of the invention uses little moving elements to achieve relatively high mechanism operating performance; and in the moving process, the mechanical parts have little abrasion, low failure rate, convenient manufacturing technique and are suitable for aviation and ground mesolow electrical switching field and realize the purpose of rapidly breaking brake and saving energy and reducing consumption.
Owner:BEIHANG UNIV +1
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