30results about How to "Suppress gyro effect" patented technology

The invention discloses a three-degree-of-freedom spherical hybrid magnetic bearing with an axial self-loop. An outer axial stator, an upper annular permanent magnet, a radial stator, a lower annularpermanent magnet and a lower axial stator sequentially coaxially sleeve a rotator from top to bottom, each of the upper axial stator and the lower axial stator is formed by axially connecting an upperdisc, a middle disc and a receiving disc, the inner end surface of every upper disc extend radially inwards extends to form a conical disc, small discs are arranged between the upper and lower end surfaces of the rotor and the corresponding conical discs, the small discs are closely attached to the upper and lower surfaces of the corresponding conical discs, the upper small disc is located abovethe upper end surface of the rotor, and the lower small disc is located below the lower end surface of the rotor; and axial air gaps are left between the upper and lower small disks and the end surface of the rotor, and a control magnetic flux enters the receiving discs through return air gaps to axially form the self-loop without mounting a pushing disc, so the rotating speed of the rotor is optimized, and coupling of axial and radial magnetic fields is reduced.

The invention discloses a self-pumping shaftless double-flywheel energy storage device using a compound molecular pump. The upper and lower spherical flywheel rotors are symmetrically distributed at both ends of the motor stator, and a groove is opened on the side close to the motor stator, and a motor is embedded in the groove. Rotor, the flywheel rotor is provided with a five-degree-of-freedom magnetic bearing radially outside, which includes an axial stator, a radial stator, a torsion stator, and a permanent magnet. Gyroscopic effect; there is a composite molecular pump under the flywheel, the upper part is a turbo molecular pump, the lower part is a traction molecular pump, and the middle is a transition structure. The pumping speed of the low-pressure side, the radius of the moving blade and the static blade decreases from top to bottom; the spiral groove of the traction molecular pump is opened on the stator, and the rotor is smooth; the radius of the moving blade on the upper part of the pump body is relatively large, and the centrifugal force is small, which improves the vacuum pump performance. operational reliability.

The invention provides a multi-dimensional integrated vehicle-mounted magnetic levitation flywheel battery control system, which belongs to the technical field of vehicle-mounted flywheel battery control. In the present invention, the current signal processed by the current regularization module is used as the input signal of the support vector machine displacement prediction module, the output signal of the support vector machine displacement prediction module, the output signal of the fuzzy PID cross feedback control module and the neural network inverse decoupling control module are accumulated and summed The signal processed by the coordinate system conversion module is used as the input signal of the improved zero-power control module, the displacement signal output by the support vector machine displacement prediction module, and the output signal of the improved zero-power control module are used as the input signal of the linear closed-loop controller, and the linear closed-loop controller The output is used as the input signal of the fuzzy PID cross feedback control module and the neural network inverse decoupling control module. The invention simplifies the complexity of the whole system, greatly improves the real-time response characteristics, can not only suppress the gyro effect, improve the stability, but also reduce energy consumption and cost.

The invention discloses an ultra-thin vehicle-mounted magnetic levitation flywheel battery for electric vehicles and a working method thereof. A motor bracket, an axial magnetic flux motor, a flywheel and an inner stator of a five-degree-of-freedom magnetic bearing are coaxially arranged in a casing from top to bottom. , coil and permanent magnet, the flywheel is composed of continuous upper, middle and lower layers. The middle of the upper ring layer of the flywheel on the upper layer is the upper ring groove, and the axial flux motor is placed in the upper ring groove. The groove, the middle annular cavity and the lower annular groove communicate with each other and house the inner stator, coil and permanent magnet of the five-degree-of-freedom magnetic bearing. The five-degree-of-freedom magnetic bearing is axial magnetic bearing, repulsive magnetic bearing, Torsional magnetic bearing and radial spherical magnetic bearing; adopting the mode of multiplexing magnetic bearings of different properties to realize their complementary advantages, which can not only improve the bearing capacity and control accuracy of the magnetic bearing support, significantly improve the stability of the flywheel, but also effectively compensate for the complex The working conditions lead to the problem of large loss of the control coil.

Provided is an alternating-current and direct-current five-degree-of-freedom hybrid magnetic bearing having dual spherical surfaces for a vehicle-mounted flywheel battery; a radial stator consists of upper and lower radial stators (1, 8) arranged coaxially and having integrally connected yokes; three radial stator poles (11, 12, 13, 81, 82, 83) are arranged along the circumferential direction of each of the upper end of the yoke of the upper radial stator (1) and the lower end of the yoke of the lower radial stator (8); the inner surface of each radial stator pole (11, 12, 13, 81, 82, 83) is a concave spherical surface (211, 811); the upper and lower ends of the intermediate cylinder (73) of a rotor (7) are an upper connection body (72) connected to an upper-end cylindrical body (71) and a lower connection body (75) connected to a lower-end cylindrical body (74), respectively; the side walls of the upper and lower cylindrical bodies (71, 75) are convex spherical surfaces (711, 751); each concave spherical surface (211, 811) correspondingly faces, at its top and bottom, a convex spherical surface (711, 751); an axial stator (5) is nested outside the intermediate cylinder (73); the upper side of an upper axial stator (51) and the lower side of the lower axial stator (52) are each equipped with annular permanent magnets (31, 32); the opposing faces of the upper and lower radial stators (1, 8) and the rotor (7) are spherical structures, eliminating a gyroscopic effect; when the rotor (7) of the magnetic bearing deflects or deviates, the electromagnetic force points to the spherical center of the rotor (7), thus reducing the disturbance torque generated on the rotor (7) by the stator magnetic poles.

The invention discloses a spherical electric vehicle magnetic suspension flywheel battery; an inner housing, a spherical stator, a spherical cavity rotor, two permanent magnets and two magnetic suspension spherical surface bearings are arranged in a vacuum cavity; the spherical stator is arranged in the right center of the flywheel housing; the spherical cavity rotor is arranged outside the spherical stator; the spherical cap shape inner housing having the same spherical core is arranged outside the spherical cavity rotor; the bottom opening of the inner housing is seamlessly fixedly connected with the first permanent magnet in a spherical cap shape; the inner housing and the spherical cavity rotor are fixedly connected through a rotor connector; the second permanent magnet in the spherical cap shape is arranged right below the first permanent magnet, and fixedly connected on the inner surface of the flywheel housing; the two magnetic suspension spherical surface bearings are arranged between the flywheel housing and the inner housing, fixedly connected on the inner wall of the flywheel housing, and two central shafts thereof are intersected. The spherical electric vehicle magnetic suspension flywheel battery can eliminate air friction losses on the flywheel, and can increase the gyro control moment scope, thus inhibiting the flywheel gyroscopic effect.

The invention discloses a radial gyrostatic effect-resisting vehicle flywheel battery. The vehicle flywheel battery comprises a flywheel rotor, wherein the middle section of the flywheel rotor is a flywheel rotor main cylinder; a lower-end ring receiving pole, a middle ring and an upper-end ring receiving pole which are concentrically sequentially fixedly connected at the outer edge of the upper surface of the flywheel rotor main cylinder from bottom to top and a lower-end disk receiving pole, a middle disk and an upper-end disk receiving pole which are concentrically sequentially fixedly connected in the middle of the upper surface of the flywheel rotor main cylinder from bottom to top are arranged at the upper section of the flywheel rotor; the upper edge of the inner wall of the upper-end ring receiving pole is a quarter of the inner-wall arc surface which is protruded inward; the upper edge of the outer wall of the upper-end disk receiving pole is a quarter of the outer-wall arc surface which is protruded outward; a radial stator is arranged in an upper-section groove of the flywheel rotor; the lower section of the flywheel rotor is a flywheel rotor lower torus; a lower-sectioncylindrical groove is formed between the flywheel rotor lower torus and the flywheel rotor main cylinder; and an external rotor motor is arranged in the lower-section cylindrical groove. The vehicleflywheel battery has the beneficial effect that the gyrostatic effect in the radial direction is suppressed.

Disclosed by the present invention is a vehicle-mounted flywheel battery using a five-degree-of-freedom hybrid magnetic bearing as a magnetic suspension support; the five-degree-of-freedom hybrid magnetic bearing is arranged at the exact middle of an inner portion of a sealed vacuum chamber; a magnetic bearing rotor is coaxially and tightly sleeved outside of a rotating shaft of the magnetic bearing at the exact middle of the magnetic bearing; a tension disk is tightly sleeved outside of the exact center of the magnetic bearing rotor in the axial direction, and a flywheel is fixedly sleeved outside of the tension disk; a stator pole is wound with a radial control coil, and an axial stator is internally provided with an axial control coil; at the exact center outside of a top surface of an outer casing is a motor / generator, a rotating shaft of the motor extending from top to bottom into the outer casing and being coaxially and fixedly connected to an upper end of the rotating shaft of the magnetic bearing; by integrating the tension disk and the flywheel into one unit, the axial length of the flywheel battery is further shortened, and the gyroscopic effect is effectively suppressed; the five-degree-of-freedom hybrid magnetic bearing integrates two single-piece three-degree-of-freedom hybrid magnetic bearings together, and is distributed on two sides of the tension disk by using a manner of mirror-symmetry, having high control precision.

The invention discloses a virtual shaft type magnetic levitation flywheel energy storage device for an electric vehicle. The flywheel rotor has a lower annular body, a main cylinder, an upper annular body and a radial / The rotor yoke is twisted, the upper surface of the main cylinder is coaxially fixedly connected to the central cylinder, the middle of the upper surface of the central cylinder is coaxially fixedly connected to the long cylinder top, and the upper end of the long cylinder top passes through the five-degree-of-freedom magnet coaxially upwards. The static part of the bearing; the lower torus and the central cylinder are solid discs, and an annular groove is formed between the upper torus and the central cylinder, and a five-degree-of-freedom magnetic bearing is embedded concentrically in the annular groove The rotating part forms a cylindrical groove between the main cylinder and the lower annular body, and the motor conductor plate is embedded concentrically in the cylindrical groove; it can well suppress the gyro effect and achieve high stability performance, high integration and high bearing capacity.

The invention discloses a construction method of a four-degree-of-freedom magnetic bearing controller for a flywheel battery used in an electric vehicle. A controller parameter optimization module is used to obtain an optimal controller gain matrix through a gray wolf optimization algorithm, and a load compensation controller and a state feedback controller are constructed. , combine the output current of the load compensation controller and the state feedback controller to form the first part of the input of the current limiting controller, and use the discretized current value at the current moment and the previous moment as the second part of the input of the current limiting controller , the state feedback controller, load compensation controller, controller parameter optimization module, and current limiting controller together constitute a four-degree-of-freedom magnetic bearing controller for the flywheel battery, which replaces four single-dimensional controllers and improves the working stability of the magnetic bearing. Improving the dynamic performance and anti-interference performance of the system can effectively increase the maximum current supplied to the magnetic bearing and shorten the adjustment time.

The present invention discloses a magnetic suspension flywheel battery for a sandwich-type electric car and a work method thereof. A vertical rotation shaft is arranged at the center of the internal portion of a vacuum chamber, a disc-type flywheel motor is coaxially arranged at the center of the axial direction of the vertical rotation shaft, disc-type magnetic bearings having the same structure, being arranged at the axial direction in the longitudinal symmetry mode relative to the disc-type flywheel motor and being sleeved at the outer portion of the vertical rotation shaft are coaxially arranged at the upper portion and the lower portion of the disc-type flywheel motor, and each disc-type magnetic bearing is wound with a set of radial control coils; the disc-type flywheel motor is composed of a stator, two rotors and two sets of permanent magnets, the stator is located at the center of the disc-type flywheel motor and coaxially arranged at the outer portion of the vertical rotation shaft, and the two rotors are respectively and symmetrically arranged at upper and lower sides of the stator and coaxially and fixedly sleeved on the vertical rotation shaft; and the two sets of the permanent magnets are respectively pasted on the surfaces, back to the stator, of the two rotors along the peripheral directions, the whole structure of the flywheel battery is a disc-type structure, the disc-type magnetic bearings and the disc-type flywheel motor are both the flat structures to inhibit the gyroscopic effect of the rotors.

The invention discloses a vehicle-mounted flywheel battery suspension control system capable of suppressing gyroscopic effect and low energy consumption, including a low energy consumption control system and a gyroscopic effect suppressing control system; , after being adjusted by the PID controller and amplified by the power amplifier, the magnetic bearing rotor is controlled to achieve low-power operation. When the disturbance occurs, the feedforward controller changes the control amount according to the size of the disturbance to offset the influence of the disturbance. At the same time, the smith predictor estimates the dynamic effect caused by the disturbance entering the system, and feeds the estimated result back to the PID controller to make it change in advance to compensate for the disturbance; the gyroscopic effect control system is suppressed: the detection signal passes through the displacement sensing module Afterwards, it is sent to the PID controller for decoupling, the coupling term is eliminated, and converted into a current by the force / current conversion module. After the current is amplified, the magnetic bearing is controlled to run smoothly. When the PID controller cannot be adjusted, it is adjusted by the feedforward controller. or to remove disturbances.

The invention discloses a five-degree-of-freedom hybrid magnetic bearing for a vehicle-mounted flywheel battery. A cylindrical rotor is coaxially sleeved with an axial stator and radial stators. The radial stators comprise the upper radial stator and the lower radial stator, wherein the upper radial stator and the lower radial stator are coaxially arranged in the axial direction, a yoke part of the upper radial stator and a yoke part of the lower radial stator are connected integrally, and a radial stator pole cavity is formed by the upper yoke part and the lower yoke part. Three radial stator poles are evenly arranged at the upper end of the yoke part of the upper radial stator in the circumferential direction, three radial stator poles are evenly arranged at the lower end of the yoke part of the lower radial stator in the circumferential direction, and a radial control coil is wound on each radial stator pole. The surface of the inner end of each radial stator pole is an arc-shaped cylindrical surface which right faces the rotor. The middle portion of the rotor is coaxially sleeved with the axial stator. An axial control coil which is closely attached to the inner wall of the axial stator and arranged outside the rotor in a sleeving mode is arranged in a cavity of the axial stator. The middle portion of the rotor is closely sleeved with a tensile plate. An axial air gap is formed between the axial stator and the tensile plate, and the middle portion of the axial stator is coaxially and closely sleeved with an annular permanent magnet. By adoption of a five-degree-of-freedom integrated structure, the length of a shaft is decreased, and the gyroscopic effect of the rotor is effectively restrained.

The invention discloses a control method of a spherical electric vehicle use magnetic suspended flywheel battery. In the working processing of the spherical flywheel battery, a control mode that a magnetic field laminates differential is adopted, that is, a pair of upper stator poles and a pair of lower stator poles are provided with bias coils and control coils respectively, the bias coils of the two stator poles are in series connection, and through a constant current, a bias magnetic field for a magnetic spherical faced bearing to work is provided; the control coils on each pair of the stator poles are in series connection, magnetic fluxes generated by the control coil and the control current in the control coil are added up in the pair of stator poles, and the magnetic fluxes of the control coil and the control current generated in the control coil are subtracted in the other pair of stator poles, therefore an air gap flux between the pair of the stator poles and a spherical flywheel is increased, an air gap flux between the other pair of the stator poles and the spherical flywheel is reduced, according to a formula I, B is a magnetic induction intensity, S is a stator spherical face area of the spherical faced bearing, mu0 is an air permeability, electromagnetic force bore at one side is increased, and electromagnetic force bore at the other side is reduced, therefore the position of the spherical faced flywheel is adjusted to be always at a balanced position.

The invention discloses a novel H-type flywheel battery structure for electric vehicles. The interior of the flywheel rotor casing with an H-type cross section consists of a stator shaft system, a radial winding, a magnetic isolation aluminum plate, an axial magnetic bearing core, and an axial The winding is composed and fixed, and the outer part is the flywheel rotor. The permanent magnet is embedded in the flywheel rotor. The stability of the flywheel is ensured by the magnetic circuit formed with the radial winding, and the lower part of the flywheel is connected with the motor / generator rotor. By driving the flywheel to rotate, the motor The / generator achieves the effect of discharging / charging, and at the same time, the interaction between the axial magnetic bearing core and the axial winding can keep the bearing and flywheel stable under the condition that the double spherical surfaces are parallel. The present invention includes the whole device in the housing of the flywheel battery, increases the volume and weight of the flywheel rotor, thereby increasing the energy storage of the flywheel.

The invention discloses an AC / DC five-degree-of-freedom cone spherical surface mixed magnetic bearing for a vehicle-mounted flywheel battery. A rotor is coaxially sleeved with a radial stator and an axial stator. The center part of the rotor is a thick cylinder. The upper and lower ends of the thick cylinder are each in smooth connection with a thin cylindrical through a circular truncated cone body. The sidewalls of the upper and lower circular truncated cone bodies are convex cone spherical surfaces. The radial stator is composed of an upper radial stator body and a lower radial stator body which are arranged in longitudinal symmetry in the axial direction. Three radial stator poles are uniformly arranged on the circumference of the yoke part of each of the upper radial stator body and the lower radial stator body. A radial control coil is wound around each radial stator pole. The surface of a pole shoe of each radial stator pole is a convex cone spherical surface facing the corresponding convex cone spherical surface, and a radial air gap is reserved between each convex cone spherical surface and the corresponding convex cone spherical surface. The axial stator is composed of an upper axial stator body and a lower axial stator body which are arranged in longitudinal symmetry. Compression ring type permanent magnets are tightly overlapped between the upper axial stator body and the lower axial stator body. The stators and the rotor are each of a cone spherical surface structure. Air gap magnetic fields are distributed more evenly. Multi-dimensional motion is facilitated. The gyroscopic effect can be effectively inhibited.