1218results about "Magnetic holding devices" patented technology

A system and method in at least one embodiment provides the means for conditioning batteries for increased battery capacity, battery runtime, reduced battery temperature while charging, and / or reduced battery temperature while in use, using current generated from a generator.

A system in at least one embodiment includes a generator having a disk-pack turbine, a coil array, and a magnet plate. The system in at least one embodiment conditions batteries for increased battery capacity, battery runtime, reduced battery temperature while charging, and / or reduced battery temperature while in use, using current generated from the generator.

A system and method in at least one embodiment provides magnetic levitation to a vehicle above and / or partially about a rail or track using a flux field generator having a plurality of members having mated waveform patterns. In a further embodiment, the magnetic levitation also uses a distribution system. In a further embodiment, the plurality of members forms a disk-pack turbine. In a further embodiment, the flux field generator is not vehicle based.

A system and method in at least one embodiment generates, transmits and distributes a diamagnetic field using a flux field generator and a distribution system. In at least one embodiment, the flux field generator is mounted on a platform or a vehicle. In a further embodiment, the flux field generator is not vehicle based.

Provided in the present invention is an interference-factor-based high-safety and stable control method for an onboard magnetically suspended flywheel battery system. The method comprises: in the case of a safe operating condition interference, obtaining the difference between a displacement reference signal and an actual displacement signal, and inputting the difference into a Butterworth-filter-fused fuzzy active disturbance rejection control module, so as to obtain control currents, wherein the control currents comprise a radial control current, a torsion control current and an axial control current; the radial control current and the torsion control current are subjected to Clark inverse transformation, and the axial control current is subjected to power amplification, and the three currents are then compensated for, such that a three-phase control current of a radial coil, a three-phase control current of a torsion coil, and a control current of an axial coil are obtained; the control currents control the corresponding coils, and are also input into a multi-information extended Kalman filtering prediction module, such that the actual displacement signal is output; and in the case of a dangerous operating condition interference, cutting off an output signal from an operating condition recognition and safety determination module. The present invention can improve the stability, robustness and anti-interference capability of a system.

The disclosure provides a mover and a mixed conveyor line having the mover. The mover is movable mounted on the magnetic power conveyor line or the mixed conveyor line. The magnetic power conveyor line includes a first armature winding; and the mixed conveyor line includes a first driving mechanism. The mover includes: a mover body, including a first permanent magnet array, the first permanent magnet array including two first permanent magnets which are oppositely spaced apart from each other, and the two first permanent magnets and the first armature winding driving, by means of current excitation, the mover body to move along the magnetic power conveyor line; and a driven assembly, connected with the mover body, and configured to be in transport connection with the first driving mechanism and drive the mover body to move along the magnetic power conveyor line or the mixed conveyor line.

The invention discloses a magnetic suspension non-contact driving self-balancing precision machine core which comprises a metal disc, a magnetic suspension assembly is arranged at the top of the metal disc, a connecting assembly is arranged on the magnetic suspension assembly, a pluggable stable supporting assembly is arranged on the metal disc, the magnetic suspension assembly comprises a Halbach annular permanent magnet array and an electromagnetic coil, and the Halbach annular permanent magnet array is connected with the connecting assembly. The Halbach annular permanent magnet array is installed at the top of the metal disc, and the electromagnetic coil is installed at the top of the metal disc and located in the Halbach annular permanent magnet array. Through composite magnetic suspension driving of the Halbach annular permanent magnet array and the electromagnetic coil, no mechanical contact exists between the suspender and the metal disc, the friction loss of traditional gear meshing is eliminated, no lubrication requirement exists, the problem of lubricating grease volatilization or aging is avoided, the stable supporting assembly is controlled through a pressure sensor and an electric push rod in a closed-loop mode, and the stability of the stable supporting assembly is improved. The height of the supporting column is adjusted in real time, so that the whole device is in a horizontal state, and the magnetic suspension system is not affected by inclination of a mounting plane.

The invention relates to a rotor identification method and device based on a magnetic suspension flexible assembly line, and the method comprises the steps: activating a pre-generated topological model; periodically scanning data of a slave station driver mover encoder, obtaining real-time position and speed data of a mover, and mapping the real-time position and speed data to corresponding coordinates; performing noise filtering and smoothing processing on the data; selecting a corresponding recognition algorithm according to the line body size, the bus communication frequency, the mover preset task sequence and the processed speed data; performing association analysis on the processed data to generate rotor track data; checking the trajectory data, and performing early warning if the trajectory data is abnormal; and the data passing the verification is updated to a database, a control instruction set is generated based on the topological model coordinates, the mover motion state and external instruction parameters, and the control instruction set is output to a path planning system, so that multi-mover high-precision real-time identification and dynamic adaptation control are realized, and support is provided for asynchronous scheduling.

The magnetic suspension motor comprises annular rotors and a stator assembly, the two annular rotors are coaxial and arranged in the vertical direction, the number of magnetic poles of the two annular rotors is the same, the arrangement directions of the magnetic poles of the two annular rotors are the same or opposite, and the relative positions of the two annular rotors are fixed; the two annular rotors are arranged on the outer side of the stator assembly in a sleeving mode, and the stator assembly drives the two annular rotors to suspend and rotate through magnetic force. The axial driving assembly can provide additional axial force for the rotating cylinder, and after the rotating cylinder axially deviates, the rotating cylinder is driven to return to the normal position; the stator assembly is isolated from the outside by the mounting cavity, and the annular rotor is isolated from the outside by the rotating cylinder, so that external media are prevented from being polluted, and the stator assembly and the annular rotor are also prevented from being corroded by the external media.

The embodiment of the invention provides a compression and expansion all-in-one machine. The compression and expansion all-in-one machine comprises an expansion side shell, a guide vane, an expansion wheel, a shaft, a compression side shell, a diffuser, a compression wheel, an expansion side shaft end seal, a compression side shaft end seal, a motor section shell, a motor stator, a temperature control plate and a magnetic suspension bearing. According to the embodiment of the invention, the expansion machine, the compressor and the motor are integrated, the magnetic suspension bearing is adopted for supporting, and the temperature control component is designed to realize partition balance of the temperature in the main machine, so that the main machine is suitable for low-temperature zero-pollution operation conditions; the low-temperature condition of the expansion side is fully utilized, the shaft end seal and the temperature control plate of the expansion side are designed, and the motor is cooled in a mode of combining low-temperature air cooling and low-temperature cold conduction; by adding an auxiliary cooling mode, the variable working condition adaptive capacity of the whole machine in the aspect of motor cooling can be improved.

The invention discloses a torque system and suspension system decoupling method of a single-winding magnetic suspension permanent magnet synchronous motor, the motor adopts a suspension parallel single-winding structure, the torque system decouples suspension current, permanent magnets adopt consequent poles, and the suspension system decouples a rotor position angle; aiming at a current loop of the suspension system, regarding a coupling item of a torque system to the suspension system as disturbance, designing a sliding mode disturbance observer based on an improved superhelix algorithm, observing and compensating the disturbance, and realizing decoupling of the suspension system and torque control; aiming at the displacement / suspension force ring of the suspension system, designing a sliding-mode active-disturbance-rejection controller, observing the disturbance of the rotor displacement and compensating the suspension force to realize decoupling among different suspension degrees of freedom; the residual coupling factors of the torque system are regarded as system disturbance, and the disturbance is observed and compensated in real time by using a sliding mode-active disturbance rejection composite control method, so that decoupling of the residual coupling factors is realized. According to the invention, comprehensive decoupling of the torque system and the suspension system is realized.

The present invention is in the field of a National Individual Floating Transportation Infrastructure (NIfTI) wherein floating vehicles can travel by magnetic levitation and propagation. The vehicles can travel at a controllable height above the existing, albeit modified, road infrastructure and at relatively high speeds.

The invention belongs to the technical field of motors, and relates to a vertical magnetic suspension motor. On the basis of the magnetic bearing control module, the cooling control module and the control evaluation module, closed-loop control of the rotor stably suspending at the target position is achieved, oscillation and steady-state errors are reduced, and the control precision is effectively improved; by dynamically calculating the temperature gradient difference and the cooling power regulation and control value and combining the PID controller and the liquid cooling / air cooling cooperation strategy, on-demand cooling is achieved, the cooling energy consumption is reduced, the temperature balance is improved, and the problems of local overheating or too high energy consumption are avoided; by performing normalized weighted analysis on key parameters such as magnetic bearing energy efficiency and cooling efficiency, feeding back control evaluation coefficients in real time and guiding system parameter optimization, the stability and reliability of long-term operation of the motor are ensured, the failure rate of the motor is reduced, the functional integrity is ensured, and system-level optimization is facilitated.

The invention belongs to the technical field of magnetic suspension motors, and discloses a composite magnetic suspension motor, a stator of which comprises a first magnet yoke group and a second magnet yoke fixedly arranged on the first magnet yoke group, and the second magnet yoke is fixedly connected with all the first magnet yokes; a first driving coil group for driving the rotor to suspend and rotate is wound on an axial arm of the first magnet yoke; the rotor comprises a longitudinally arranged connecting shaft and a magnetic upper rotor and a magnetic lower rotor which are vertically arranged at the two ends of the connecting shaft, radial extension parts are outwards symmetrically arranged on the outer sides of the upper rotor and the lower rotor in the radial direction, a radially magnetized connecting magnet is embedded between every two adjacent radial extension parts, and the polarities of the connecting magnets located on the same horizontal plane are consistent; and the connecting shaft is made of a non-magnetic material. The radial extension parts and the connecting magnets on the rotor are alternately arranged, so that the magnetic field intensity and the magnetic field density of the rotor are greatly improved, and the operation stability and the control precision of the rotor are remarkably improved through the cooperation with the stator.

The invention discloses a cooling method and device of a magnetic suspension motor, the magnetic suspension motor, a storage medium and a computer program product, a coolant pipeline is arranged at a motor winding of the magnetic suspension motor, and an electronic expansion valve is arranged on the coolant pipeline; the method comprises the steps that whether the opening degree of the electronic expansion valve is adjusted or not is determined according to the temperature of a motor winding and the reference temperature of the motor winding; if it is determined that the opening degree of the electronic expansion valve is adjusted, the temperature of the motor winding and the reference temperature of the motor winding are substituted into a preset anti-saturation PI algorithm, and an opening degree calculated value of the electronic expansion valve is obtained; and controlling the opening degree of the electronic expansion valve to be the opening degree calculation value. According to the scheme, the coolant flow is controlled by arranging the electronic expansion valve, the opening degree of the electronic expansion valve is controlled according to the anti-saturation PI algorithm, the electronic expansion valve is prevented from being in a saturation state, and the sensitivity of opening degree adjustment of the electronic expansion valve and the accuracy of motor winding temperature control are improved.

The invention relates to an integrated protection magnetic suspension motor and a magnetic suspension vacuum pump, and belongs to the technical field of magnetic suspension motor protection. In the magnetic suspension motor, a front backboard is arranged at the front end of a casing, a tail end cover and a tail end cover are arranged at the rear end of the casing, the casing, the front backboard, the tail end cover and the tail end cover form an installation cavity, and a front protection bearing seat, a front radial magnetic bearing seat, a rear protection bearing seat and a rear radial magnetic bearing seat are installed in the installation cavity. And a seam and a connecting surface between the bearing seats are prevented from being exposed outside. Only one air inlet and one air outlet are formed in the machine shell, leakage points are reduced through the design of the single air inlet and the single air outlet, and protection above IP54 is achieved. Meanwhile, heat dissipation and protection of the motor are considered at the same time through the design.

The invention provides a motor control method and device, and the method comprises the steps: applying a first suspension current to a first stator, and applying a first rotation current to a second stator, so as to control the suspension of an impeller to rotate at a first position; when the rotation speed of the impeller reaches the target rotation speed, the second rotation current is applied to the first stator, and the first suspension current and the second rotation current are applied to the second stator. The two stators are arranged, after the impeller reaches the target rotating speed, the first stator and the second stator are used at the same time to control rotation of the impeller, the power consumption of the second stator can be greatly reduced, and therefore the service life of the motor is prolonged.

The magnetic suspension motor composite rotating shaft comprises a rotating shaft body, a magnetic isolation ring, a magnetic steel strip and a sheath, the rotating shaft body is provided with a plurality of shaft sections which are sequentially arranged along the axial direction of the rotating shaft body, the outer diameters of the adjacent shaft sections are different, and one shaft section in the middle of the rotating shaft body is a magnetic steel installation section; the magnetic isolation rings are fixedly arranged on the outer ring of the magnetic steel installation section in a sleeving mode, a magnetic steel installation space is formed between the two magnetic isolation rings, notches are evenly distributed in the opposite end faces of the two magnetic isolation rings in the circumferential direction, the multiple magnetic steel strips are evenly distributed on the outer circumferential face of the magnetic steel installation section, and the extending direction of the magnetic steel strips is parallel to the axial direction of the rotating shaft body. Two ends of the magnetic steel strip are respectively inserted into the notches; and the sheath coaxially sleeves the outer rings of the magnetic steel strips and the magnetic isolation ring. According to the utility model, the gap between the magnetic steel and the rotating shaft body can be utilized to reduce the probability of heat transfer from the magnetic steel to the rotating shaft body, and the heat dissipation effect can be improved by cooperating with the air holes of the sheath.

The invention discloses a modular five-degree-of-freedom magnetic suspension compressor rotor system and a control method, and belongs to the field of compressor rotors, the modular five-degree-of-freedom magnetic suspension compressor rotor system comprises a magnetic suspension rotor main shaft and a driving motor arranged in the middle of the magnetic suspension rotor main shaft, and a centrifugal impeller and a cooling impeller are installed at the two ends of the magnetic suspension rotor main shaft correspondingly; the magnetic suspension rotor main shaft between the driving motor and the centrifugal impeller and the magnetic suspension rotor main shaft between the driving motor and the cooling impeller are respectively and sequentially provided with an axial magnetic bearing assembly and a radial magnetic bearing assembly; the axial magnetic bearing assembly is of a non-thrust disc structure in which a magnetic field is directly coupled; the radial magnetic bearing assembly is of a modular structure with partitioned magnetic poles. According to the modularized five-degree-of-freedom magnetic suspension compressor rotor system and the control method, the axial magnetic bearing assembly directly coupled with the magnetic field is adopted, a thrust disc is omitted, the assembly process of the axial magnetic bearing is simplified, meanwhile, the partitioned magnetic poles are adopted, redundancy control is achieved, and stability is higher.

The present invention relates to a five-degree-of-freedom ultra-high-speed bearingless permanent magnet motor. Both ends of a cylindrical solid permanent magnet are respectively connected to a rotating shaft. A casing is installed outside the cylindrical solid permanent magnet. A stator core is fixedly installed on the casing. A set of torque windings is embedded in the bottom layer of the stator core, and two sets of suspension windings are embedded in the upper layer of the stator core. End covers are fixedly installed on both sides of the casing. Auxiliary bearings are installed between the end covers and the rotating shaft. Passive permanent magnet bearings are nested on both the end covers and the rotating shaft. The present invention is reasonably designed, integrating a magnetic suspension bearing and a permanent magnet motor into one. While the motor generates an electromagnetic torque capable of driving the rotor to rotate, it can also generate a radial suspension force to overcome the rotor gravity and unilateral magnetic pull force, simplifying the motor structure and shortening the axial length of the motor. The double suspension windings and the axial passive permanent magnet magnetic bearing achieve five-degree-of-freedom control, increasing the rotor stiffness and critical speed of the ultra-high-speed motor, and improving the operation stability and anti-disturbance ability.

The invention relates to the technical field of paint spraying, and discloses a pipeline inner wall anticorrosive paint spraying device which comprises a main frame body and a supporting structure arranged on the surface of the main frame body, the supporting structure comprises a plurality of supporting rods fixedly connected to the surface of the main frame body, one end of each supporting rod is fixedly connected with an electromagnet, and the spraying structure is arranged on one side of the main frame body and used for spraying anticorrosive paint on the inner wall of a pipeline. The spraying structure comprises a connecting ring fixedly connected to one side of the electromagnet, a plurality of spraying heads A used for spraying are arranged on the surface of the connecting ring, a communicating ring is fixedly connected to the inner surface of the connecting ring, a communicating groove used for communicating the multiple spraying heads A is formed in the communicating ring, and the spraying device further comprises a feeding assembly used for pumping paint. The problem of movement deflection caused by direct contact of the rollers can be effectively avoided, the rollers are not in direct contact with the inner wall of the pipeline during paint spraying, the cleanliness of a coating during spraying of the inner wall of the pipeline is effectively guaranteed, and contamination of pollutants such as dust and rust is avoided.

There is provided a transport system comprising: a stator having a first magnetic force unit; a mover having a second magnetic force unit; and a control unit. The control unit controls a magnetic force acting between the first magnetic force unit and the second magnetic force unit to transport the mover in a first direction. The stator has a first regulating member row including a plurality of first regulating members and a second regulating member row including a plurality of second regulating members, the mover, in a second direction intersecting the first direction, being disposed between the first regulating member row and the second regulating member row. The control unit performs a first process of applying a rotational force to the mover such that one of the first regulating members in the first regulating member row serves as a fulcrum when the mover contacts the first regulating member row.

A linear electrical machine including a frame with a level reference plane, an array of electromagnets connected to the frame and coupled to an alternating current power source energizing each electromagnet, at least one reaction platen of paramagnetic, diamagnetic, or non-magnetic conductive material disposed to cooperate with the electromagnets of the array of electromagnets so that excitation of the electromagnets with alternating current generates levitation and propulsion forces against the reaction platen that controllably levitate and propel the reaction platen along at least one drive line, in a controlled attitude relative to the drive plane, and a controller operably coupled to the array of electromagnets and the alternating current power source and configured so as to sequentially excite the electromagnets with multiphase alternating current with a predetermined excitation characteristic so that each reaction platen is levitated and propelled with up to six degrees of freedom.

A stator structure of a magnetic levitation flux-switching motor includes a stator of a modular structure and a motor housing. A modular stator includes front and rear side winding end heat dissipation modules, modular stator left and right wings, a modular stator permanent magnet, front side magnetic conduction column left and right wings, an inter-front side and inter-rear side magnetic conduction column permanent magnets, insulating layers, a stator winding, and rear side magnetic conduction column right and left wings. The front side and rear side winding end heat dissipation modules are of hollow structures, and are symmetrically provided with a cooling medium inlet and a cooling medium outlet, a cooling medium channel is disposed inside a hollow cavity, one side of the heat dissipation module is a smooth curved surface, and good thermal contact can be achieved between the heat dissipation module and the stator winding and the insulating layer.

The invention relates to a liquid-cooled casing, a magnetic suspension motor and magnetic suspension equipment, the liquid-cooled casing comprises a casing main body and a base, and the casing main body comprises an annular shell, a central cylinder and a first bottom plate which define an annular space; the base comprises a second bottom plate and a central column, a first liquid cooling cavity is formed in the annular shell, one end of the central cylinder is an open end, and the other end of the central cylinder is a closed end; the edge of the second bottom plate is fixedly connected with one end of the annular shell in a sealed mode, the center column penetrates through the center cylinder, a second liquid cooling cavity is formed between the outer wall of the center column and the inner wall of the center cylinder, and a first circulation opening and a second circulation opening which are spaced are formed in the second bottom plate. The first circulation port is communicated with one part of the first liquid cooling cavity and one part of the second liquid cooling cavity, and the second circulation port is communicated with the second part of the first liquid cooling cavity and the second part of the second liquid cooling cavity. The cooling effect of the magnetic suspension motor is improved, and the heat dissipation requirements of special working environments such as high cleanliness can be better met.

The utility model discloses an inner rotor magnetic suspension fan which comprises a tubular outer shell, a stator shell, a magnetic suspension stator and a rotor impeller assembly, the stator shell is arranged in the tubular outer shell, a rotor cavity is formed in the end, facing an air inlet, of the stator shell, the magnetic suspension stator is arranged in the stator shell in a sealed mode, and the rotor impeller assembly is arranged in the rotor cavity. The rotor impeller assembly comprises a rotor sheath, a magnetic suspension rotor, a connecting component and an impeller, the impeller comprises a cylindrical hub and a plurality of blades arranged on the peripheral side of the cylindrical hub, the cylindrical hub is arranged around the stator shell and fixedly connected with the rotor sheath through the connecting component, the magnetic suspension rotor is sealed in the rotor sheath, the rotor sheath is arranged in the rotor cavity, and the magnetic suspension rotor is arranged in the rotor cavity. The magnetic levitation stator is configured to drive the magnetic levitation rotor to rotate and magnetically levitate. According to the magnetic suspension fan, the axial flow type fluid characteristic with the large diameter is obtained in the form of the inner rotor, the structure is simple, the heat dissipation performance is good, and high-precision, high-sensitivity and good-stability rotor position detection can be achieved.

The invention discloses an intelligent start-stop control method and system for a magnetic suspension refrigeration compressor, and the method comprises the steps: obtaining a position perception enhancement source through collecting and analyzing the current response data of a magnetic bearing coil, and extracting the current response change characteristics; rotor position estimation is carried out based on current response change characteristics, a positioning precision driving source is extracted from estimation deviation, and a non-impact starting excitation current instruction is generated; a multi-sensor fusion data network is established, configuration is reconstructed through an abnormal response activation signal, and a degradation operation fault-tolerant mode is formed; converting a response preparation gain according to the shutdown instruction signal, performing shutdown state evaluation in combination with signal reconstruction configuration, and generating an emergency shutdown trigger condition; and the power supply state of a bus capacitor is detected, gradient control potential is released, the active damping control opportunity is determined, a damping force control instruction is generated, finally intelligent start-stop control over the magnetic suspension refrigeration compressor is achieved, and safe and reliable operation of the system under various working conditions is ensured.

The invention relates to a magnetic suspension motor and magnetic suspension equipment integrated with an air cooling heat dissipation device, the magnetic suspension motor comprises a magnetic suspension stator and a magnetic suspension rotor, the magnetic suspension stator comprises a casing and a stator assembly, the casing comprises an outer cylinder, an inner cylinder and a bottom plate, and the stator assembly is arranged in an annular space enclosed by the inner cylinder, the outer cylinder and the bottom plate. The air-cooling heat dissipation device comprises an air-cooling stator and an air-cooling rotor, the air-cooling stator is arranged in the annular space, the air-cooling rotor comprises a rotor main body and at least one air-cooling impeller arranged on the rotor main body, the rotor main body is at least partially arranged in the inner cylinder, and the air-cooling stator drives the rotor main body and the at least one air-cooling impeller to rotate and suspend in a non-contact mode; and the magnetic suspension stator is subjected to air cooling heat dissipation. The magnetic suspension motor is compact in structure, centralized management of power supply lines of the air cooling stator and the magnetic suspension stator can be achieved, the air cooling stator drives the air cooling rotor to dissipate heat in a non-contact mode, good heat dissipation is achieved, meanwhile, mechanical abrasion is avoided, particles are not generated, and the heat dissipation requirements of special working environments such as high cleanliness can be met.

A system and method for object processing using magnetic levitation includes moving carriers with drive magnets across an array of planar motors. Food items on the carriers are moved through processing steps. The system determines the weight of multiple food items and coordinates and arranges for the batching of food items totaling a desired weight from an assembly of available food items and presents the selected food items to an operator for further processing. The system moves the carriers to engage the food items with processing equipment, such as for attaching to poultry shackles, or for cutting by a filet machine.

The invention relates to a magnetic suspension fan heat dissipation device, a magnetic suspension motor and magnetic suspension equipment, the magnetic suspension motor comprises a magnetic suspension stator and a magnetic suspension rotor, the magnetic suspension fan heat dissipation device comprises a flow guide cover and a magnetic suspension fan, and the flow guide cover comprises a base and a wind shielding side wall; the magnetic suspension fan comprises a fan stator and a fan rotor, the fan stator is fixedly arranged on the base, the fan rotor is movably arranged on the side, facing the magnetic suspension motor, of the base, the fan rotor comprises a rotor body and at least one fan impeller arranged on the rotor body, and a ventilation opening communicated with the fan impeller is formed in the side, back to the magnetic suspension motor, of the base. And the fan stator drives the rotor main body and the at least one fan impeller to rotate and suspend in a non-contact manner so as to carry out air-cooling heat dissipation on the casing of the magnetic suspension motor. The magnetic suspension fan heat dissipation device can be used after being assembled with a shell of a magnetic suspension motor to be subjected to heat dissipation in a butt joint mode, the structure is compact, the fan stator drives the fan rotor to dissipate heat in a non-contact mode, good heat dissipation is achieved, meanwhile, mechanical abrasion is avoided, particles are not generated, and the heat dissipation requirements of special working environments such as high cleanliness can be met.