WO2013143457A1

WO2013143457A1 - Ampere-force radial electromagnetic bearing and composite electromagnetic bearing formed using same

Info

Publication number: WO2013143457A1
Application number: PCT/CN2013/073246
Authority: WO
Inventors: 刘延风
Original assignee: Liu Yanfeng
Priority date: 2012-03-30
Filing date: 2013-03-27
Publication date: 2013-10-03
Also published as: CN102678746B; CN102678746A

Abstract

An ampere-force radial electromagnetic bearing can achieve that an executive force is a monotone function of a control current. The electromagnetic bearing comprises rotors (1) and stators (6). Annular magnetic poles (2) are arranged on the rotors (1). The stators (6) comprise coils (5) and stator cores (7). The rotors (1) and the stator cores (7) are axially arranged. The annular centre of the annular magnetic poles (2) is on the geometric centre (1-1) of the rotors. The orientation of the pole faces of the annular magnetic poles (2) is an axial direction. Slots (9) are arranged on the stator cores (7), and coils (5) are snap-fitted in the slots (9) . An x and y-axis rectangular coordinate system is established in the centre (7-1) of the stator cores in a radial direction, and the coils (5) and the slots (9) are all grouped according to the x-axis and the y-axis, and the positions thereof are deviated from the centre (7-1) of the stator cores. The slots (9) are provided with circular-arc narrow notches (8), the radius of the circular-arc narrow notches (8) is the same as that of the annular magnetic poles (2), the opening direction of the circular-arc narrow notches (8) is also an axial direction, and the circular-arc narrow notches and the pole faces of the annular magnetic poles (2) are spaced by an operating air gap (12) and are aligned to make the coils (5) locate in the magnetic field of the annular magnetic poles (2). The electromagnetic bearing can be used for the magnetic suspension support of objects. The ampere-force radial electromagnetic bearing can form a composite electromagnetic bearing.

Description

Ampere radial electromagnetic bearing and composite electromagnetic bearing formed by using the same

BACKGROUND OF THE INVENTION 1. Field of the Invention This invention relates to an electromagnetic bearing, and more particularly to an active electromagnetic bearing that utilizes the ampere force of a current carrying conductor in a magnetic field to provide non-contact magnetic support to a rotor or non-rotating component.

Background technique

In a broad sense, electromagnetic bearings include three parts: electromagnetic bearing actuators, sensors and controllers. They input electrical energy from outside and generate control force. They are often called active magnetic bearings. It is customary to refer to these electromagnetic bearing actuators only as electromagnetic bearings. Suspension is usually achieved by the principle that the magnetic pole of the magnet generates suction to the ferromagnetic material. For example, Chinese patent number 200710135188. 0 permanent magnet bias axial radial magnetic bearing, 200510040267. 4 permanent magnet bias radial magnetic bearings, are suction or magnetic resistance electromagnetic bearings. The electromagnetic bearing of the prior art whose force is near its equilibrium position is not only a monotonic function of the control current ^, but also relates to the position y where the rotor is located:

AF _y ^ k _yy y + k _yi i _y , where fc _w is the displacement stiffness of the electromagnetic bearing is always less than zero; ^ is the current stiffness of the electromagnetic bearing. See "Controllable Magnetic Suspension Rotor System". Lie, Science Press, 2003, first edition, page 38, lines 16 to 19. When a rotor suspended by a suction type electromagnetic bearing is used, when the displacement of the rotor is too large, the execution force must take into account the influence of the rotor position, otherwise the control will be unstable.

The "Controllable Magnetic Suspension Rotor System" is sturdy, Science Press, 2003, first edition, page 252, section 9.3, which records the automatic balance of rotor motion. "Vibration Mechanics" by Liu Yanzhu, et al., Higher Education Press, 1998, 1st edition, pages 38 to 40, Chapter 2, Section 2.2, 3, discusses the automatic centering of high-speed flexible shaft rotors after critical speed. . The rotor suspended by the suction type electromagnetic bearing is difficult to realize automatic centering of the rotor when the control current is zero and the radial direction is negative displacement stiffness.

U.S. Patent No. 6,304,015, magneto-dynamic bearing discloses a passive radial magnetic bearing that does not require additional electronic circuitry and power supplies. A shorted conductor loop is mounted on the rotor, and a permanent magnet is mounted on the stator. When the rotor is swaying, the conductor The ring produces an induced eddy current and produces a reaction force in the magnetic field, the magnitude of which is limited and unadjustable.

US patented lj, US5469006 lorentz force magnetic bearing utilizing closed conductive loops and selectively controlled electromagnets discloses a short-circuited conductor ring similar to the previous patent on the rotor, biased A magnetic levitation system that generates an induced eddy current in a magnetic field and generates a reaction force in a magnetic field. The difference is that its magnetic field strength is controllable. Since the energy generated by the force mainly comes from the rotor itself, it is still a passive magnetic bearing. There is a problem that the execution is not strong enough when there is a big disturbance.

U.S. Patent No. 4,700,094 magnetic suspension system discloses a Lorentz magnetic suspension system in which a circular sleeve-like multilayer coil is placed and placed in an air gap of a permanent magnetic radial magnetic field, axial current and circumference. The rotor magnetic levitation is achieved by generating a linear and x, y Lorentz force to the current. The disadvantage is that the circumferential air gap is large in order to accommodate the integrated coil, and the magnetic flux density of the air gap magnetic field must be high, so that the permanent magnet is bulky, otherwise the execution force is small.

US Patent ^{No. 1} J, US75374371 inear actuator, and valve device and pump device used also discloses a linear axial actuator, the permanent magnet is on the moving body, the coil is on the stationary body, and the moving body can be axially when the coil has current Drive, it has no radial drive structure.

Disclosure of invention

The technical problem to be solved by the present invention is: To overcome the deficiencies of the prior art, an active electromagnetic bearing is provided, which inputs electric energy from the outside and generates a control execution force, and its execution force is a monotonic function of the control current, and the rotor is located The position is irrelevant. Given the control current, for a radial displacement, for a radial electromagnetic bearing, even if the geometric center of the rotor is not at the center of the stator, or if the rotor has an unbalanced mass that tends to automatically balance, the center of rotation of the rotor is not at its geometric center, its execution force - - The characteristics of the current are also unaffected. The construction of the maglev system only needs to determine the center of the position of the sensor, and does not require precise centering of the position center of the actuator, that is, the electromagnetic bearing, so that the installation is simplified, and the requirement of the rotor dynamic balance accuracy is lowered.

From the knowledge of vibration mechanics, the low-stability supported high-speed unbalanced rotor, the higher the rotational speed, the closer its center of rotation is to the centroid of the rotor. Therefore, the electromagnetic bearing controller generally has a built-in trap to achieve uncontrolled release of the displacement vibration generated by the unbalanced centrifugal force of the rotor, so that the center of rotation of the rotor is close to or at the center of mass of the rotor to attenuate or eliminate the centrifugal force of rotation, and also save control. Power consumption. However, this will cause the radial sway of the rotor at the position of the electromagnetic bearing to be too large, and it is difficult for the suction type electromagnetic bearing to affect the linear relationship between the execution force and the current.

In order to solve the above technical problems, the basic idea of the present invention is: design a non-suction type electromagnetic bearing, apply an energizing conductor in a magnetic field to receive an ampere force, that is, a Lorentz force principle, and provide a predetermined wire winding on the stator, in the rotor Or at least one of the stators is provided with a permanent magnet, a field winding, or the like as a magnetic field source, and a ferromagnetic material or the like is disposed on the rotor to establish an air gap basic magnetic field, and a pole surface direction of the magnetic pole is an axial direction, that is, an air gap is The axial thickness, the specified wire winding is in the base magnetic field, and when the wire winding flows through the control current, an ampere force is generated in the radial direction to achieve controlled suspension.

According to Ampere's law, its execution force is F = χβ _;

Β is the magnetic flux density at the wire, and the total length of the L wire is the wire to control the current. The relationship between the amperage direction of the energized wire winding and the direction of the magnetic field B and the direction of the current can be determined by the left hand rule. After the structure is fixed, the execution force is only a monotonic function of the control current in the effective range of the magnetic pole magnetic field. Regardless of the position of the rotor, the force is zero when the control current is zero, that is, the radial displacement stiffness is zero. The direction of the magnetic field is perpendicular to the direction of the wire. The direction of the magnetic field of the radial electromagnetic bearing is axial, which is significantly different from the magnetic field of the permanent magnet bias magnetic pole of the suction type radial electromagnetic bearing.

The coils form the wire windings. The x, y rectangular coordinate system is defined radially in the center of the stator of the electromagnetic bearing. When the sensor induces a displacement, the controller gives a control current, the coil or coil group in the X direction generates an X-direction execution force; the y-direction coil Or a coil set that produces a y-direction execution force.

Radial Ampere electromagnetic bearing has a fundamental difference between the magnetic field source and the radial suction type electromagnetic bearing in the stator. The former is to establish the axial air gap basic magnetic field, the purpose is to make the energized conductor coil Wherein the radial ampere force is generated, and theoretically the magnetic field strength of the basic magnetic field is constant during operation, and the energized conductor coil does not generate force by changing the magnitude of the magnetic field strength of the basic magnetic field, and the basic magnetic field must be possessed by Ampere's law, otherwise The energized conductor coil does not generate a force; the latter is to establish a radial air gap bias magnetic field, and the bias magnetic field is designed to reduce the nonlinear phenomenon of current and force, usually in pairs on both sides, and energize the conductor coil during operation. One side of the magnetic field strength is increased by the other side to generate a suction force to generate a radial force. When the bias magnetic field is inoperative, the magnetic field strength is inevitably changed, and it may not be set. At this time, the energized conductor coil can generate suction to form a radial force. So the magnetic field sources of the two have very different characteristics.

The radial Ampere electromagnetic bearing has a magnetic field source and a passive radial magnetic bearing. There is a purpose difference between the permanent magnet and the stator. The former is to establish the axial air gap basic magnetic field, so that the energized wire winding on the stator is located. The ampere force is applied to the magnetic field; the latter is to induce an electromotive force in the shorted conductor loop moving on the rotor, which in turn generates eddy currents, generating a diamagnetic potential to form a reaction force.

Usually the rotor suspended by the electromagnetic bearing is unlikely to achieve complete rotational dynamic balance and static balance. For a radial suction type electromagnetic bearing, the magnetic pole of the biasing force faces the radial direction of the rotor and forms a radial air gap with the rotor, and as described above, when the rotor balance accuracy is not high and the sway is too large, the rotor diameter The influence on the position makes the relationship between the execution force and the current non-linear, and the air gap is too small, and the stator and the rotor even collide with the friction to cause a instability accident.

Ampere radial electromagnetic bearing has a magnetic pole surface direction of axial force, and an axial air gap is formed between the rotor and the rotor. The radial direction of the rotor can be completely released. Even if the balance accuracy of the rotor is not high and the shaking is too large, it does not affect. Execution force and current linear relationship, the stator and rotor can completely avoid radial collision friction, so the balance accuracy requirements of the rotor and the response speed of the controller are relatively low.

A technical solution for realizing the basic idea of the present invention is: an amperage radial electromagnetic bearing comprising a stator and a rotor, The middle rotor comprises a permanent magnet and a toroidal pole. The stator comprises a coil, a stator core, and a working air gap between the rotor and the stator, wherein the rotor and the stator core are axially juxtaposed, and the toroidal magnetic pole is round. The center of the ring is at the geometric center of the rotor, and the pole face of the toroidal pole is oriented axially. A slot is formed in the stator core, a coil is embedded in the slot, and x and y orthogonal coordinates are established in the radial center of the stator core. The coil, the coil and the slot are grouped according to the x and y axes, and are arranged in the circumferential direction centered on the stator core, and the slot has a narrow arc slot, and the arc center of the narrow slot of the arc is In the center of the stator core, the radius of the narrow notch of the arc is the same as the radius of the toroidal pole, and the opening direction of the narrow notch of the arc is also the axial direction. The narrow slot of the arc and the pole face of the toroidal pole pass the working air gap. Separated, and the narrow notch of the arc is aligned with the pole face of the toroidal pole so that the coil is in the magnetic field of the toroidal pole. The ampere radial electromagnetic bearing is constructed. When the coil flows through the control current, the coil or coil group in the X direction generates an X-direction execution force to the rotor; the coil or coil group in the y direction generates a y-direction execution force to the rotor.

The air gap normally used as a magnetic path can have multiple segments, but it is not necessarily that all of the magnetic energy of the air gap changes and participates in the transfer of energy or force. The working air gap means that it is not only a path of the magnetic field, but also an intention to implement the present invention, and the required magnetic force is transmitted between the stator and the rotor through a magnetic field. The toroidal magnetic pole of the present invention means: a toroidal shape, a strong magnetic portion in the magnetic circuit member facing the working air gap, which is a strong magnetic ring on the rotor. Usually, a permanent magnet, a field winding, etc. can be used as a magnetic field source. The NS pole can be formed by the permanent magnet itself, the iron core adsorbed on the permanent magnet or the core of the field winding, and the ferromagnetic component in the magnetic path, and the toroidal magnetic pole is only The magnetic pole of the permanent magnet directly facing the working air gap, or the permanent magnet adsorbed inside, the rotor core part facing the working air gap, or the rotor core without the permanent magnet, the magnetic field generated by the stator magnetic field source is in the rotor The iron core working air gap side converges to form a strong magnetic portion. The above definition distinguishes a toroidal magnetic pole from a well-known N-S magnetic pole which is necessarily an even number of ordinary magnets. The present invention can face the working air gap for two toroidal poles, such as a large one or a small radius. The narrow arc slots of the two arcs are also aligned with the pole faces of the two toroidal poles, that is, their radius and radius are the same. When the current flows through the coil, the currents in the slots under the narrow slots of the two different radius arcs flow in opposite directions and are in different directions of the magnetic field, so their ampere forces are added together. The toroidal magnetic pole can also be one of the N pole or the S pole, or more, and the arc of the same radius is matched with the narrow slot of the arc, and the polarity of the toroidal pole and the current flow of the coil are set, so that the Ampere force is added in the same direction.

The stator core and the coil of the present invention belong to the stator, and it is also considered that the stator core or the stator core and the coil are stators. The invention may be an axial arrangement in which the two stators and one of the rotors in the middle are symmetric. It is also possible that the two rotors and one of the stators in the middle have a symmetrical axial arrangement on both sides. It can also be a stator and a rotor juxtaposed.

The coil and the wire slot of the present invention can also be arranged on two pairs of sides according to each coordinate. The number of turns and the size of the coil are completely symmetrical or not identical, and the flow direction of the current in the coil is designed to make the ampere force generated by the two pairs of sides. Add together for synergy. Two pairs of edges refer to the position, with the square of the coordinates being one side and the negative side being the other side. Each axis can also have only one set of coils and slots. For The coils are conveniently mounted, and each stator core is divided by the position of the coordinate axis, and is divided into four pieces when the two pairs of sides of the coil are disposed. Between the block and the block of the stator core, the sub-core bridge can also be set, so that the magnetic resistance of the magnetic circuit does not change when the toroidal magnetic pole on the rotor passes over the gap between the stator core segments. Large enough to cause the permanent magnet operating point to fluctuate and create eddy currents in the core.

The radius of the arc of the narrow circular slot of the present invention is the same as the radius of the toroidal pole. The magnetic field of the toroidal magnetic pole can cover the narrow notch of the arc, and the respective radii of the center line of the two centers are not required to be precise. Equal, there can be some deviations, of course, the exact equality is better. The arc of the narrow slot of the arc may be an arc that is spliced into a full circle or a segmented arc, and the toroidal pole may also be formed by splicing the segmented arc poles. The narrow slot of the arc is aligned with the pole face of the toroidal pole through the air gap: In the initial stage, the axis of the stator core and the axis of the geometric center of the rotor should coincide, and when there is displacement disturbance or execution force, it is not required. They must be perfectly aligned, but the magnetic field of the toroidal pole still covers the narrow slot of the arc. The narrow slot of the arc is narrow relative to the magnetic field of the toroidal pole, that is, the annular pole can be small when the slot is small, which can greatly reduce the axial suction while keeping the magnetic gap of the working air gap sufficient. Big. The shape of the wire groove is not specified, as long as it includes a narrow circular groove at its mouth.

The pole face of the toroidal magnetic pole of the present invention has an axial direction and a circular arc. The slot opening direction is also an axial direction, but it does not have to be strictly perpendicular to the x and y planes. It is also allowed to have some off angles for other factors. However, the declination should be less than 45 degrees, and the resulting radial negative displacement stiffness can be balanced by a permanent magnet radial repulsive bearing. It is known from Enshao's theorem that the radial displacement negative stiffness is actually transferred to the axial displacement. Negative stiffness.

The permanent magnet of the present invention can be attracted to the rotor core. The number of permanent magnets and coils may be single or multiple. The permanent magnet block constitutes a permanent magnet, and the rotor core, the permanent magnet block or a combination of the permanent magnet block and the rotor core are attached to the rotor and they are also considered to constitute the rotor.

The purpose of the invention is to provide a narrow arc notch for the purpose of: setting a high reluctance isolation for the magnetic flux generated when the current flows through the coil, so that the magnetomotive force generated by the current-carrying coil enters the air gap in a predetermined region, and the permanent magnet foundation The magnetic field phase produces ampere. The notch can be an open notch or a closed notch, and the narrow notch of the circular arc is closed in the form of high magnetic reluctance by a very thin magnetic or other material, and is also a category of a narrow notch of a circular arc.

The toroidal magnetic pole of the present invention may be the magnetic pole of the permanent magnet itself, or the rotor core may be attracted to the permanent magnet to form a toroidal magnetic pole.

The working air gap of the ampere radial electromagnetic bearing of the invention has an axial basic magnetic field, and the magnetic field can also be used as a bias magnetic field of the suction type axial electromagnetic bearing, and an axial control slot is set at an appropriate position of the stator core to set the suction force. The type of shaft-controlled coil can make the Ampere radial electromagnetic bearing with suction-type axial electromagnetic bearing, and the two bearings not only share the basic magnetomotive force source, It also shares the air gap, the stator core and the magnetic pole. The radial and axial hybrid electromagnetic bearings hardly increase the original single volume, and the appropriate structural design can make no axial interaction between the axial and radial directions. The radial and axial hybrid electromagnetic bearing is generally arranged in two axial directions, two working air gaps and one axially symmetric rotor, or two rotors, two working air gaps and one in the middle. The stator has a symmetrical axial arrangement on both sides. When there is a control current in the axis control coil, the magnetic flux density of the air gap base magnetic field on one side becomes smaller and the equal amount on the other side becomes larger, forming a suction difference, and an axial control force is generated. Since the magnetic flux density of the working air gaps on both sides increases and decreases, when the radial disturbance needs to be controlled radially, the combined force of the radial execution forces is not affected. The same is true if there is axial control after radial control or both. When the radial and axial hybrid electromagnetic bearings are mixed, the rotor core and the basic magnetomotive force source on the rotor are arranged and configured to be suitable for use with electromagnetic bearings of different radial and axial properties, and they work at the working point of the permanent magnets during operation. It does not become optimal; however, the magnetic flux emitted by the permanent magnet on one side becomes larger and the other side becomes smaller to achieve the axial control force, that is, the working point of the permanent magnet is variable, as long as the operating point is limited. Within a certain range, permanent magnets are not demagnetizable.

The technical solution of the present invention lists various necessary technical features and subject names related to solving the technical problems of the present invention as a subject: an Ampere radial electromagnetic bearing, when the technical solution of the present invention is implemented in a specific product, The required prior art can be added by itself.

Preferably, both sides of the rotor are each provided with a stator symmetrically in the axial direction.

Preferably, the stator core is provided with two sets of coils and corresponding two sets of slots on the X-axis and the y-axis, and two sets of coils on the same coordinate axis are respectively disposed in the positive and negative directions of the coordinate axis. Position, similarly, the two sets of slot corresponding to the coil are also respectively disposed in the positive and negative directions of the coordinate axis, and the number and size of the coils of the two sets are the same or different.

Preferably, the stator core is divided into four pieces symmetrically in accordance with the positions of the X-axis and the y-axis.

Preferably, the permanent magnet on the rotor is an inner and outer ring centered on the geometric center of the rotor, and the permanent magnet itself forms a toroidal magnetic pole.

Preferably, the rotor is further provided with a rotor core, and the rotor core is attracted to a passage of the permanent magnet to form a magnetic circuit. Preferably, the stator core is provided with a z coordinate axis perpendicular to the x and y coordinate axes, the stator core further has an axis control slot, and the axis control slot is embedded with an axis control coil, and the axis control coil is The ring edge spans the center of the stator core, and the ring surface faces the axial direction, that is, the z direction, and a suction type axial electromagnetic bearing is attached.

Preferably, the stator core is provided with a z coordinate axis perpendicular to the x and y coordinate axes, the stator core further has an axis control slot, and the axis control slot is embedded with an axis control coil, and the axis control coil is The ring side does not span the center of the stator core, and the ring face faces the X direction, or the y direction, and the suction type axial electromagnetic bearing is attached.

Preferably, each side of the stator is axially symmetrical with a rotor. The technical solution of the present invention may be: an ampere radial electromagnetic bearing, comprising a stator and a rotor, wherein the rotor comprises a basic magnetic field source, the stator comprises a coil, a stator core, and a working air gap is provided between the rotor and the stator, The rotor and the stator core are axially juxtaposed, and the side of the rotor that is in contact with the working air gap has a ring magnetic pole formed by a basic magnetic field source, and the center of the ring of the toroidal magnetic pole is at the geometric center of the rotor, and the toroidal magnetic pole The pole face is oriented in the axial direction, and an X, y-axis rectangular coordinate system is established at the center of the stator core, wherein the X-axis and the y-axis are both disposed along the radial direction of the stator core, and at least two wire slots are formed on the stator core. At least one of the slots is along the X-axis direction, and at least one other slot is along the y-axis direction, and each of the slots has a coil embedded therein, and the end of the slot has a circular arc slot The center of the arc of the narrow slot of the arc is at the center of the stator core. The radius of the narrow slot of the arc is the same as the radius of the toroidal pole. The direction of the opening of the narrow slot of the arc is also the axial direction. Interpolar to the pole of the toroidal pole Separated from the working air gap, and a narrow arcuate slot with the annular pole face aligned magnetic poles of the coil in the magnetic field in the pole ring.

Preferably, the total number of stators and rotors is 2 to 3, and the stator and the rotor are alternately arranged in the axial direction. Preferably, the stator core is divided into four blocks in the circumferential direction of the stator, and each of the stator cores is provided with a wire groove and a coil corresponding to the wire groove.

Preferably, the basic magnetic field source is a permanent magnet, and the permanent magnets on the rotor are two, and the permanent magnets are annular, wherein one permanent magnet ring is larger than the other permanent magnet ring.

Preferably, the basic magnetic field source is a permanent magnet, and the permanent magnets on the rotor are one or two, the permanent magnets are annular, and a rotor core is arranged on one side of the permanent magnet, and the rotor core and the permanent magnet are axially Arranged side by side.

Preferably, the toroidal magnetic pole on the rotor is a permanent magnet self magnetic pole.

Preferably, the toroidal magnetic pole on the rotor is formed by a rotor core.

Preferably, each of the trunkings is formed by two concentric arc sub-grooves, each of which is provided with an annular closed coil, and the two ends of the trough are circular arc slots, in a circle The arc slot is filled with a high reluctance medium.

An ampere-composite electromagnetic bearing formed by using the above-mentioned Ampere radial electromagnetic bearing has a shaft-controlled wire groove formed on the stator core, and a shaft-controlled coil is embedded in the shaft-controlled wire groove.

Preferably, the axis control coil has a ring shape centered on the center of the stator core, and the axis control wire groove and the wire groove are parallel to each other in the radial direction, and the axis control wire slot opening is on a side close to the working air gap, and the axis control coil is The direction of the torus is toward the axial direction, the axis coil is parallel to the working air gap, and the axis coil is located between the inner and outer edges of the coil.

Preferably, the axis control coil is wound around the block of the stator core, the axis control slot and the slot are parallel to each other in the radial direction, and the direction of the toroid of the axis coil is radial, the axis coil and the working gas The gap is vertical and the axis coil is located between the inner and outer edges of the coil. The relative positions of the above-mentioned axis coils, coils and other features are in terms of the faces formed by the rings.

The technical solution of the present invention may also be: an ampere radial electromagnetic bearing, comprising a stator and a rotor, wherein the stator comprises a basic magnetic field source, further comprising a coil, a stator core, and a working air gap between the rotor and the stator, The rotor and the stator core are axially juxtaposed, and the side of the rotor that is in contact with the working air gap is formed by a rotor core forming a toroidal magnetic pole, and the center of the toroidal magnetic pole is at the geometric center of the rotor, and the toroidal magnetic pole The pole face is oriented in the axial direction, and an x, y axis rectangular coordinate system is established at the center of the stator core, wherein the X axis and the y axis are both disposed along the radial direction of the stator core, and at least two wire slots are formed on the stator core. At least one of the slots is along the _x- axis direction, and at least one other slot is along the y-axis direction, and each of the slots is embedded with a coil, and the end of the slot has a narrow arc The arc center of the arc slot is on the center of the stator core. The radius of the narrow slot of the arc is the same as the radius of the ring pole. The direction of the opening of the narrow slot of the arc is also the axial direction. Working between the pole faces of the toroidal pole Spaced, and arcuate narrow annular notch aligned poles facing the magnetic poles, the magnetic field in the annular coil in the guide pole.

Preferably, the rotor has two rotor cores, and the rotor core has a ring shape, wherein one rotor core ring is larger than the other rotor core ring.

Preferably, the toroidal magnets on the rotor are two or four.

Preferably, the stator base magnetic field source is a permanent magnet or a field winding.

Preferably, the direction of the magnetic field of the stator base magnetic field source is radial, i.e., the direction of the magnetic pole face of the permanent magnet or the toroid of the field winding coil faces in the radial direction.

Preferably, the field winding is wound around the block of the stator core, the field slot and the slot are parallel to each other in the radial direction, the direction of the toroid of the field winding is radial, and the field winding is perpendicular to the working air gap, and The field winding is located between the inner and outer edges of the coil.

Preferably, the field winding has a ring shape centered on the center of the stator core, and the field winding slot and the slot are parallel to each other in the radial direction, and the field winding slot is open on a side close to the working air gap, the field winding The direction of the torus is toward the axial direction, the field winding is parallel to the working air gap, and the field winding is located between the inner and outer edges of the coil.

Preferably, the axis control coil has a ring shape centered on the center of the stator core, the axis control wire slot and the wire groove are parallel to each other in the radial direction, and the axis control wire slot opening is on a side close to the working air gap, the axis control coil The direction of the torus is toward the axial direction, the axis coil is parallel to the working air gap, and the axis coil is located between the inner and outer edges of the coil.

Preferably, the axis coil is wound around the block of the stator core, and the axis control slot and the slot are parallel to each other in the radial direction. The direction of the toroid of the axis coil is radial, the axis coil is perpendicular to the working air gap, and the axis coil is located between the inner and outer edges of the coil.

Preferably, the axis coil and the field winding are the same component, and the field winding slot and the shaft control slot are also the same slot. The relative positions of the above-mentioned field windings, the axis coils, the coils and other features are in terms of the faces formed by the rings. The beneficial effects of the invention: the ampere-based radial electromagnetic bearing whose execution force is a monotonic function of the control current, in order to realize the release vibration of the displacement vibration generated by the unbalanced centrifugal force of the rotor, the controller generally has a built-in trap, ampere The force radial electromagnetic bearing does not need to be compensated for the negative displacement stiffness as in the conventional suction type radial electromagnetic bearing. It creates a simplified controller condition from the body structure, reduces control operation time, reduces time lag, ensures high control precision, and makes the magnetic suspension rotor system easy to achieve automatic balance. The center of the position of the sensor is determined, and the center of the position of the electromagnetic bearing is not required to be precisely centered, the installation procedure is simplified, and the accuracy of the suspension system of the rotor is reduced. It has a large effective output per unit volume, high space utilization, and good linearity of current force. It works well in high-speed rotating rotor applications such as the stable control of energy storage flywheels.

DRAWINGS

Figure 1 shows a construction of a permanent magnet and a toroidal pole of a rotor.

Figure 2 shows another configuration of the permanent magnet and the toroidal pole of the rotor.

Figure 3 shows a third configuration of the permanent magnet and the toroidal pole of the rotor.

Figure 4 is a fourth configuration of the permanent magnet and toroidal pole of the rotor.

Figure 5 shows a construction of the stator.

Figure 6 shows a construction of a stator core.

Figure 7 shows another configuration of the stator core.

Figure 8 is a schematic illustration of the basic magnetic field source of the present invention being a permanent magnet of a rotor and having a toroidal magnetic pole.

Figure 9 is a perspective view showing the basic magnetic field source of the present invention being a permanent magnet of a rotor and having a plurality of toroidal magnetic poles.

Figure 10 is a schematic view showing the magnetic lines of the permanent magnetic base magnetic flux of the embodiment of Figure 9 along the magnetic circuit.

Fig. 11 is a view showing the magnetic lines of force of the permanent magnet base magnetic flux of the embodiment of Fig. 9 driven by the magnetomotive force of the coil winding. Figure 12 is a graph showing the measured force-current relationship of the embodiment of Figure 9 of the present invention.

Figure 13 is another embodiment of the basic magnetic field source of the present invention in which the permanent magnet of the rotor has a plurality of toroidal poles.

Figure 14 is a schematic diagram of the basic magnetic circuit of the composite bearing in the radial and axial directions of the intermediate stator.

Fig. 15 is a schematic view showing the magnetic circuit of the radial and axially mixed composite bearing of the intermediate stator after being driven by the radial control magnetomotive force. Fig. 16 is a schematic view showing the magnetic circuit of the radial and axially mixed composite bearing of the intermediate stator after being driven by the axial control magnetomotive force. Figure 17 is a perspective view showing the construction of a radial and axial hybrid composite electromagnetic bearing of the present invention.

Figure 18 is another embodiment of a radial, axially mixed composite electromagnetic bearing of the present invention.

Figure 19 is a schematic illustration of the basic magnetic field source of the present invention being a permanent magnet on a stator.

Figure 20 is a schematic illustration of the basic magnetic field source of the present invention being a permanent magnet on a stator and having a radial toroidal axis control coil. Figure 21 is a schematic illustration of the basic magnetic field source of the present invention being a permanent magnet on a stator and having an axial toroidal axis control coil. Figure 22 is a schematic illustration of the basic magnetic field source of the present invention being a radial toroidal field winding on a stator.

Figure 23 is a schematic illustration of the basic magnetic field source of the present invention being a radial toroidal field winding on a stator and used as a shafting coil. Figure 24 is a schematic illustration of the axial toroidal field winding of the basic magnetic field source of the present invention on the stator.

Figure 25 is a schematic illustration of the basic magnetic field source of the present invention being an axial toroidal field winding on a stator and used as a shafting coil. Figure 26 is a schematic view showing the position of the coil of the coil and the ring facing axial direction of the present invention.

Figure 27 is a schematic view showing the position of the coil of the coil of the present invention in the radial direction of the coil.

Best way to implement the invention

The technical solutions of the present invention will be further specifically described below by way of embodiments and with reference to the accompanying drawings.

Example:

Figure 1 is a structural section of a permanent magnet and a toroidal pole of a rotor. The permanent magnet 3 shown is a circle inside and outside the center line 1-1 of the rotor, and the permanent magnet 3 itself forms a ring. Magnetic poles 2, which are mounted on the rotor 1, have a total of N, S four toroidal poles 2.

2 is another structural section of the permanent magnet and the toroidal pole of the rotor. The illustrated permanent magnet 3 is a ring centered on the 1-1 line of the geometric center of the rotor, and the permanent magnet 3 itself forms a toroidal pole 2 It is mounted on the rotor 1, and the rotor core 4 is attracted to the permanent magnet 3 as a passage for the magnetic circuit. The matching stator core can be provided with a trunking.

3 is a third structural section of the permanent magnet and the toroidal pole of the rotor. The illustrated permanent magnet 3 is in the middle of the rotor 1, and the inner and outer rings of the rotor core 4 form four toroidal poles 2, which It is a ring centered on the 1-1 line of the geometric center of the rotor. This structure is used in the present invention where the working point of the permanent magnet is substantially unchanged when the suction type axial magnetic bearing is attached.

Figure 4 is a fourth structural section of the permanent magnet of the rotor and the toroidal pole. The permanent magnet 3 shown is two inner and outer rings centered on the 1-1 line of the geometric center of the rotor. The permanent magnet 3 itself forms two The toroidal poles 2, which are mounted on the rotor 1, the rotor core 4 is attracted to the permanent magnet 3 as a passage for the magnetic circuit.

Figure 5 is a structural view of the stator. The stator 6 is provided with a stator core 7, a slot 9 is formed in the stator core 7, a coil 5 is embedded in the slot 9, and the center 7-1 of the stator core is radial. Establish x, y axis Cartesian coordinate system, coil 5 and wire slot 9 settings Offset from the center 7-1 of the stator core on the coordinate axis, each coordinate axis has two sets of coils 5 and slots 9, which are respectively disposed on two opposite sides of the coordinate axis, and the number and size of the coils 5 of the two opposite sides The same is completely symmetrical. The wire groove 9 further has a circular arc narrow notch 8, and the arc center of the arc narrow groove 8 is on the center 7-1 of the stator core, and the opening direction of the narrow groove 8 is an axial direction. For the convenience of the mounting of the coil 5, the stator core 7 is divided into four pieces at the position of the coordinate axis.

Figure 6 is a structural view of the stator core, with x, y in the radial direction, the center of the stator core 7-1 establishes the x, y, z axis rectangular coordinate system, the stator core 7 is only drawn on the y coordinate axis One of the segments. A set of wire grooves is formed on the stator core, and one set of wire grooves is formed by two arcuate wire grooves 9 which are parallel to each other. The two annular wire grooves 9 are parallel in the radial direction and are embedded in a set of wire grooves. The card has a ring-shaped coil 5, and the wire groove 9 has a circular arc narrow notch 8, and the arc center of the arc-shaped narrow notch 8 is at the center 7-1 of the stator core, and the opening direction of the arc-shaped narrow slot 8 is the axial direction. . A shaft control slot 11 is further formed on the stator core 7, and the opening direction of the shaft control slot 11 is the same as that of the arc narrow slot 8, and the axis control slot 11 is opened between the two slots 9, the axis control line The slot 11 and the slot 9 are parallel to each other in the radial direction, and the axis coil 10 is embedded in the shaft control slot 11, the axis coil 10 and the coil 5 are parallel to each other in the axial direction, and the center of the axis coil 10 is in the stator Core center 7-1. As shown in Fig. 26, the coil 5 and the axis coil 10 are arranged side by side, the loop of the coil 5 faces the axial direction, the loop surface of the shaft coil 10 also faces the axial direction, and the shaft coil 10 is located at the outer edge of the coil 5 5- 1 and the inner edge 5-2.

Fig. 7 is another structural view of the stator core, in which the x, y coordinates are in the radial direction, the stator core center 7-1 establishes the x, y, z axis rectangular coordinate system, and the stator core 7 only draws the X coordinate axis. One of the divided ones. A set of wire grooves is formed on the stator core, and one set of wire grooves is formed by two arcuate wire grooves 9 which are parallel to each other. The two annular wire grooves 9 are parallel in the radial direction and are embedded in a set of wire grooves. The card has a ring-shaped coil 5, the wire groove 9 has a circular arc narrow slot 8, the arc center of the arc-shaped narrow slot 8 is at the center 7-1 of the stator core, and the opening direction of the arc-shaped narrow slot 8 is the axial direction . A shaft control slot 11 is further defined on the stator core 7, and the shaft control slot 11 is defined between the two slots 9, and the axis control slot 11 and the slot 9 are parallel to each other in the radial direction. The wire slot 11 is embedded with the axis control coil 10, and the toroidal surface of the axis control coil 10 is perpendicular to the toroidal surface of the coil 5. The coil 5 and the axis control coil 10 are located on the positive side of the X axis as seen from the coordinate system of the figure. . As shown in Fig. 27, the coil 5 and the axis coil 10 are crossed, the loop 5 of the coil 5 faces the axial direction, the ring of the shaft coil 10 faces the radial direction, and the shaft coil 10 is located at the outer edge 5-1 of the coil 5. Between the inner edge 5-2 and the inner edge.

Figure 8 is a schematic view of the basic magnetic field source of the present invention which is a permanent magnet of the rotor and has a toroidal magnetic pole, including a permanent magnet 3, a toroidal pole 2, a coil 5, a rotor 1, a stator core 7, a working air gap 12, The permanent magnet 3 on the rotor 1 is a ring centered on the 1-1 line of the geometric center of the rotor, and the permanent magnet 3 itself forms a toroidal pole 2, so the center of the toroidal pole 2 is at the geometric center 1-1 of the rotor. The rotor core 4 is attracted to the permanent magnet 3 as a passage for the magnetic circuit, and the pole face of the toroidal pole 2 is oriented in the axial direction. A wire slot 9 is formed in the stator core 7, and a coil 5 is embedded in the wire slot 9, and only a certain path is shown here. The coil 5 and the wire groove 9 of the shaft x or y axis are combined, and they are located at a distance of 7-1 from the center of the stator core, and the wire groove 9 has a circular arc slot 8 and a circular arc slot 8 The center of the arc is at the center 7-1 of the stator core, and its radius is the same as that of the toroidal pole 2, and the opening direction of the narrow slot 8 is an axial direction, which is aligned with the pole surface of the toroidal pole 2 and is aligned with the air gap 12, The coil 5 is placed in the magnetic field generated by the toroidal pole 2 to form an Ampere electromagnetic bearing. When the current flow in the coil 5 and the polarity of the toroidal pole 2 are as shown, the magnetic circuit and the rotor are shown. 1 strength? . There is a large-area magnetic pole face in the magnetic circuit, facing in the radial direction, so that a small amount of radial displacement negative stiffness generated can be balanced by a permanent magnet radial repulsion bearing. Here, a wire slot 9 is formed in the forward direction of a certain axis of the stator core 7, and one side of the loop of the coil 5 is in the line groove 9 and the other side is outside the line groove 9.

9 is a view showing an embodiment in which the basic magnetic field source of the present invention is a permanent magnet of a rotor and having a plurality of toroidal magnetic poles, which includes a permanent magnet 3 as a basic magnetic field source, a toroidal pole 2, a coil 5, a rotor 1, and a stator core. 7. Working air gap 12, the implementation is that the two stator cores 7 and one intermediate rotor 1 are symmetrically arranged axially on both sides, and the permanent magnets 3 mounted on the rotor 1 are based on the rotor geometric center 1-1 line. The center ring, the permanent magnet 3 itself forms the toroidal pole 2, so the center of the toroidal pole 2 is on the geometric center 1-1 of the rotor, and the rotor core 4 is attracted to the permanent magnet 3 as a path for the magnetic circuit, The pole face of the ring pole 2 is oriented in the axial direction. A wire slot 9 is formed on the stator cores 7 on both sides, and x and y-axis rectangular coordinate systems are established in the radial center 7-1 of the stator core. For the convenience of the installation of the coils 5, the stator cores 7 on each side are coordinated. The position of the shaft is divided into four pieces, the coils 5 are embedded in the slot 9, the coils 5 and the slots 9 on both sides are grouped according to the coordinate axes, and are disposed at a distance of 7-1 from the center of the stator core, on both sides. The stator core 7 has two sets of coils 5 and slots 9 for each coordinate axis, which are respectively disposed on two opposite sides of the coordinate axis, and the coils 5 and the sizes of the two pairs of sides are completely symmetrically arranged. The slot 9 on both sides also has a circular arc slot 8 , and the arc center of the arc slot 8 is at the center 7-1 of the stator core, the radius of which is the same as that of the ring pole 2, and the arc slot 8 The opening direction is an axial direction, which is spaced apart from the pole surface of the toroidal pole 2 by the working air gap 12, so that the coils 5 on both sides are in the magnetic field of the toroidal magnetic pole 2, and constitute an Ampere radial electromagnetic bearing.

Figure 10 is a schematic view showing the magnetic field lines of the permanent magnetic base magnetic flux of the embodiment of Figure 9 along the magnetic circuit. In the cross-sectional view, it comprises a permanent magnet 3, a toroidal pole 2, a coil 5, a rotor 1, a stator core 7, a working air gap. 12, the two permanent magnets 3 ring form a toroidal pole 2, the center of which is on the geometric center 1-1 of the rotor, and the rotor core 4 is attracted to the permanent magnet 3 as a passage for the magnetic circuit. A slot 9 is formed in the stator core 7, a coil 5 is embedded in the slot 9, and a set of radial X or y-axis coils 5 and slots 9 are provided on both sides at a position 7-1 from the center of the stator core. The arcuate notch 8 and the pole face of the toroidal pole 2 are spaced apart from each other by the working air gap 12. The magnetic field line starts from the left outer N-ring magnetic pole 2 through the left working air gap 12--to the left outer arc narrow slot 8 side left stator core 7--around the left two-line slot 9--to the left Side inner arc narrow notch 8 sides - make the left coil 5 in the magnetic field of the toroidal pole 2 - then through the left working air gap 12 - to the left inner S toroidal pole 2 - to the left Side inner permanent magnet 3-- via inner rotor core 4-- To the right inner permanent magnet 3-- to the right inner N-ring pole 2--right working air gap 12-- to the right inner arc narrow slot 8 side right stator core 7--around right side Two-line slot 9--to the right outer arc of the narrow slot 8 side--the right coil 5 is in the magnetic field of the toroidal pole 2--and then the right working air gap 12-- to the right side S The toroidal pole 2 - to the right outer permanent magnet 3 - through the outer rotor core 4 - to the left outer permanent magnet 3, forming a permanent magnetic fundamental magnetic field.

Figure 11 is a schematic view showing the magnetic field lines of the permanent magnetic base magnetic flux of the embodiment of Figure 9 after being driven by the magnetomotive force of the winding. In the cross-sectional view, it comprises a permanent magnet 3, a toroidal pole 2, a coil 5, a rotor 1, and a stator. The core 7, the working air gap 12, the toroidal pole 2 formed by the ring of the two permanent magnets 3, whose center is at the geometric center 1-1 of the rotor, and the rotor core 4 is attracted to the permanent magnet 3 as a passage for the magnetic circuit . A slot 9 is formed in the stator core 7, a coil 5 is embedded in the slot 9, and a set of radial X or y-axis coils 5 and slots 9 are provided on both sides at a position 7-1 from the center of the stator core. The arcuate notch 8 and the pole face of the toroidal pole 2 are spaced apart from each other by the working air gap 12. The current flow of the coils 5 on both sides is shown in the figure, and the magnetomotive force generated by the coils 5 on both sides pushes the magnetic lines of the magnetic fundamental magnetic field below the wires of the coil 5, so that the magnetic field lines of the working air gap 12 are bent in one direction, on the rotor 1. A radial ampere reaction force F is generated.

Figure 12 is a graph showing the actual current-current relationship of the embodiment of Figure 9 of the present invention. The current is used until the actual maximum current is a straight line segment, and the current is increased and the curve is gradually bent due to the magnetic saturation of the stator core. In the range where the rotor sway is extremely wide in the range of the toroidal pole, the curve is the same line regardless of the position of the rotor.

Figure 13 is another embodiment of the present invention, wherein the permanent magnet body of the rotor has a plurality of toroidal poles, and includes a permanent magnet 3, a toroidal pole 2, a coil 5, a rotor 1, a stator core 7, and a working gas. Gap 12, the implementation is a symmetrical axial arrangement of two rotors and a stator in the middle. The permanent magnet 3 mounted on the rotor 1 on both sides is a ring centered on the 1-1 line of the geometric center of the rotor, and the permanent magnet 3 itself forms the toroidal pole 2, so the center of the toroidal pole 2 is at the geometric center of the rotor 1 In the upper case, the rotor core 4 is attracted to the permanent magnet 3 as a path of the magnetic circuit, and the pole faces of the ring magnetic poles 2 on both sides are oriented in the axial direction. A wire groove 9 is formed in the intermediate stator core 7, and an x, y-axis rectangular coordinate system is established in the radial center 7-1 of the stator core. For the convenience of the installation of the coil 5, the position of the intermediate stator core 7 on the coordinate axis is Divided into four pieces, the wire coil 9 is embedded with the card coil 5, and the coil 5 and the wire groove 9 are grouped by the coordinate axis, and are disposed at a position away from the center of the stator core by 7-1 - a distance between the intermediate stator core 7 along each coordinate The shaft has two sets of coils 5 and slots 9, which are respectively arranged on two opposite sides of the coordinate axis, and the coils 5 and the dimensions of the two pairs of sides are completely symmetrically arranged. The left and right sides of the slot 9 further have a circular arc slot 8 which is centered on the center 7-1 of the stator core and has the same radius as the toroidal pole 2 on both sides, both sides The circular arc slot 8 is open in the axial direction, and is aligned with the pole faces of the toroidal poles 2 on both sides, and the coil 5 is placed in the magnetic field of the toroidal pole 2 to form an Ampere diameter. To the electromagnetic bearing. The arc-shaped narrow notch 8 can be made of a non-metallic material having a high reluctance, such as an epoxy, so that the narrow notch of the arc is closed, so that the intermediate stator core 7 is stabilized. Figure 14 is a schematic view of the basic magnetic circuit of the composite bearing in the radial and axial directions of the intermediate stator. In the sectional view, it comprises a permanent magnet 3, a toroidal pole 2, a coil 5, a rotor core 4, a stator core 7, a working air gap 12, and the permanent magnet 3 itself forms a toroidal pole 2, the center of which is at the rotor On the geometric center 1-1, the rotor core 4 is attracted to the permanent magnet 3 as a passage for the magnetic circuit. A slot 9 is formed in the stator core 7, a coil 5 is embedded in the slot 9, and a set of radial X or y-axis coils 5 and slots 9 are provided on both sides at a position 7-1 from the center of the stator core. The arcuate notch 8 and the pole face of the toroidal pole 2 are spaced apart from each other by the working air gap 12. It also has a shaft control slot 11 in which the axis control coil 10 is embedded, and the shaft control slot 11 is located between the inner and outer edges of the coil 5. When the shaft control coil 10 flows through the control current, it realizes the axial control force according to the magnetic flux emitted from the permanent magnet 3 on one side becoming smaller and the other side becomes smaller, that is, the operating point of the permanent magnet 3 is variable.

Fig. 15 is a schematic view showing the magnetic circuit of the radial and axially mixed composite electromagnetic bearing of the intermediate stator subjected to the radial control magnetomotive force driving, and Fig. 15 is the same as the sectional view of Fig. 14. When the coil 5 passes the radial control current, the working air gap 12 magnetic field lines of force bend the rotor to produce a radial force F as shown.

Fig. 16 is a schematic diagram showing the magnetic circuit of the radial and axially mixed composite electromagnetic bearing of the intermediate stator subjected to axial control magnetomotive force driving. The cross-sectional structure of Fig. 16 is the same as that of Fig. 14. When the axis coil 10 controls the current through the axial direction, the magnetic field density on the side of the working air gap 12 increases, and the other side becomes smaller, and the axial force F as shown is generated on the rotor.

Figure 17 is a perspective view of a radial and axial hybrid composite electromagnetic bearing of the present invention, which is a perspective sectional view, which can be understood together with Figure 6. It comprises a permanent magnet 3, a toroidal pole 2, a coil 5, a rotor 1, a stator core 7, a working air gap 12, which is an axial arrangement in which two stator cores 7 and an intermediate rotor 1 are bilaterally symmetrical. The permanent magnet 3 mounted on the rotor 1 is a ring centered on the 1-1 line of the rotor geometric center, and the rotor core 4 is attracted to the permanent magnet 3 as a path of the magnetic circuit, and its center is at the geometric center of the rotor 1 At -1, the rotor core 4 forms the toroidal pole 2, and the pole face of the toroidal pole 2 faces in the axial direction. A wire slot 9 is formed on the stator cores 7 on both sides, and x and y-axis rectangular coordinate systems are established in the radial center 7-1 of the stator core. For the convenience of the installation of the coils 5, the stator cores 7 on each side are coordinated. The position of the shaft is divided into four pieces, the coils 5 are embedded in the slot 9, the coils 5 and the slots 9 on both sides are grouped by coordinate axes, and are disposed at positions away from the center 7-1 of the stator core, and the stator cores on both sides 7 There are two sets of coils 5 and slots 9 for each coordinate axis, which are respectively arranged on two opposite sides of the coordinate axis, and the coils 5 and the dimensions of the two pairs of sides are completely symmetrically arranged. The slot 9 on both sides also has a circular arc slot 8 , and the arc center of the arc slot 8 is on the center 7-1 of the stator core, the radius of which is the same as that of the toroidal pole 2, and the arc slot 8 The opening direction is the axial direction, which is spaced apart from the pole surface of the toroidal pole 2 by the working air gap 12, so that the coils 5 on both sides are in the magnetic field of the toroidal pole 2. A stator coordinate axis perpendicular to the x and y coordinate axes is also formed on the stator core 7, and an axis control coil 10 is embedded in the shaft control slot 11, and the axial coil 10 is juxtaposed with the coil 5 in the axial direction. Arrangement, the axis of the axial coil 10 is oriented in the axial direction, that is, the z-direction, and the axial groove 11 and the groove 9 are parallel to each other in the radial direction, and the axial coil 10 is located between the inner and outer edges of the coil 5, A hybrid electromagnetic bearing that constitutes the radial and suction axial direction of the amperage. When the coil 5 and the axis coil 10 flow a current as shown, the magnetomotive force of the axis coil 10 forces the magnetic flux of the permanent magnet 3 to be biased to one side, and the magnetic flux density of the working air gap 12 on one side is increased. The other side is reduced, and the suction difference is generated on both sides to form an axial execution force Fz; the magnetomotive force of the coil 5 pushes the magnetic line of the magnetic base magnetic field below the wire of the coil 5, so that the magnetic field lines of the working air gap 12 are bent in one direction, in the rotor A radial ampere reaction force Fy is generated on 1.

Fig. 18 is another embodiment of the radial and axial hybrid composite electromagnetic bearing of the present invention, which is a perspective sectional view, which can be understood in conjunction with Fig. 7 . It comprises a permanent magnet 3, a toroidal pole 2, a coil 5, a rotor 1, a stator core 7, a working air gap 12, which is an axial arrangement in which two stator cores 7 and an intermediate rotor 1 are bilaterally symmetrical. The permanent magnet 3 mounted on the rotor 1 is a ring centered on the 1-1 line of the rotor geometric center, and the rotor core 4 is attracted to the permanent magnet 3 as a path of the magnetic circuit, and its center is at the geometric center of the rotor 1 At -1, the rotor core 4 forms the toroidal pole 2, and the pole face of the toroidal pole 2 faces in the axial direction. A wire slot 9 is formed on the stator cores 7 on both sides, and a x-axis y-axis rectangular coordinate system is established in the radial center 7-1 of the stator core. For the convenience of the coil 5 installation, the stator cores 7 on both sides are aligned. The position of the shaft is divided into four pieces, the coils 5 are embedded in the slot 9, the coils 5 and the slots 9 on both sides are grouped according to the coordinate axes, and are disposed at positions away from the center 7-1 of the stator core, and the stator cores on both sides 7 There are two sets of coils 5 and slots 9 for each coordinate axis, which are respectively arranged on two opposite sides of the coordinate axis, and the coils 5 and the dimensions of the two pairs of sides are completely symmetrically arranged. The slot 9 on both sides also has a circular arc slot 8 , and the arc center of the arc slot 8 is on the center 7-1 of the stator core, the radius of which is the same as that of the toroidal pole 2, and the arc slot 8 The opening direction is the axial direction, which is spaced apart from the pole surface of the toroidal pole 2 by the working air gap 12, so that the coils 5 on both sides are in the magnetic field of the toroidal pole 2. A stator coordinate axis perpendicular to the x and y coordinate axes is established on the stator core 7, and an axis control coil 10 is embedded in the shaft control slot 11, and the shaft control slot 11 and the slot 9 are in the radial direction. Parallel to each other, the axis of the coil 10 is facing in the radial direction, and the axis coil 10 is located between the inner and outer edges of the coil 5. The axis slot 11 can be very shallow, as long as the orientation of the axis coil 10 is indicated. can. It also has a stator core bridge 7-2 so that when the toroidal pole 2 on the rotor 1 passes over the gap between the four pieces into which the stator core 7 is divided, the magnetic resistance does not change too much. Affects the stability of the working point of the permanent magnet 3. In this way, a hybrid electromagnetic bearing having an ampere radial and suction axial direction is constructed. When the coil 5 and the axis coil 10 flow a current as shown, the magnetomotive force of the axis coil 10 forces the magnetic flux of the permanent magnet 3 to be biased to one side, and the magnetic flux density of the working air gap 12 on one side is increased. The other side is reduced, and the suction difference is generated on both sides to form an axial execution force Fz; the magnetomotive force of the coil 5 pushes the magnetic line of the magnetic base magnetic field below the wire of the coil 5, so that the magnetic field lines of the working air gap 12 are bent in one direction, in the rotor A radial ampere reaction force Fy is generated on 1.

Figure 19 is a schematic view showing the basic magnetic field source of the present invention as a permanent magnet on the stator. In the cross-sectional view, it comprises a permanent magnet 3, a toroidal pole 2, a coil 5, a rotor 1, a stator core 7, and a working air gap 12. The implementation is two stator cores 7 and one The rotor 1 is symmetrically arranged on both sides, and the permanent magnet 3 mounted on the stator core 7 is an arc centered on the 7-1 line of the stator geometric center, and the magnetic field generated by the permanent magnet 3 passes through the working air gap 12 Then, it converges on the rotor core 4 into a toroidal pole 2, the center of the toroidal pole 2 is at the rotor geometric center 1-1, the rotor core 4 serves as a magnetic path, and the pole face of the toroidal pole 2 is oriented axially. . A wire slot 9 is formed on the stator cores 7 on both sides, and x and y-axis rectangular coordinate systems are established in the radial center 7-1 of the stator core. For the convenience of the installation of the coils 5, the stator cores 7 on each side are coordinated. The position of the axis is divided into four blocks, and only the section of the X-axis positive section is drawn on the figure. A card coil 5 is embedded in the wire slot 9, and the coils 5 and the wire grooves 9 on both sides are grouped by a coordinate axis, and are disposed at a position 7-1 from the center of the stator core. The slot 9 on both sides also has a circular arc slot 8 , and the arc center of the arc slot 8 is at the center 7-1 of the stator core, the radius of which is the same as that of the ring pole 2, and the arc slot 8 The opening direction is an axial direction, which is aligned with the pole surface of the toroidal pole 2 and is aligned with the air gap 12, so that the coils 5 on both sides are in the magnetic field of the magnetic field lines as shown by the toroidal pole 2, which constitutes the Ampere force. Radial electromagnetic bearings.

20 is a schematic view showing a basic magnetic field source of the present invention which is a permanent magnet on a stator and has a radial toroidal axis control coil. In the cross-sectional view, it includes a permanent magnet 3, a toroidal pole 2, a coil 5, and a rotor core 4. The stator core 7, the working air gap 12, the magnetic field generated by the permanent magnet 3 passes through the working air gap 12 and converges on the rotor core 4 into a toroidal pole 2, the center of which is at the geometric center 1-1 of the rotor, and the profile is The I-shaped rotor core 4 serves as a passage for the magnetic circuit. A slot 9 is formed in the stator core 7, a coil 5 is embedded in the slot 9, and a set of radial X or y-axis coils 5 and slots 9 are provided on the two sides at a position 7-1 from the center of the stator core. The arcuate notch 8 and the pole face of the toroidal pole 2 are spaced apart from each other by the working air gap 12. It also has a toroidal radial axis coil 10 embedded in the axis control slot 11, the axis coil 10 is wound around the stator core block, and the axis control slot 11 and the slot 9 are in the radial direction. Parallel to each other, the direction of the toroid of the axis coil 10 is radial, the axis coil 10 is perpendicular to the working air gap 12, and the axis coil 10 is located between the inner and outer edges of the coil 5. The thin loop line in the figure is the magnetic field line of the magnetic field when the current of each coil is zero. When the axis control coil 10 flows through the control current, it realizes the axial control force according to the magnetic flux emitted from the permanent magnet 3 on one side becomes larger, that is, the operating point of the permanent magnet 3 is variable. The radial force control is applied to the two sides of the rotor to achieve the axial force control without affecting the radial control force, and constitutes the radial and axial hybrid composite electromagnetic bearing of the present invention.

Figure 21 is a schematic view showing the basic magnetic field source of the present invention as a permanent magnet on the stator and having an axial toroidal axis control coil. In cross-section, it comprises a permanent magnet 3, a toroidal pole 2, a coil 5, and a rotor core 4. The stator core 7, the working air gap 12, the magnetic field generated by the permanent magnet 3 passes through the working air gap 12 and converges on the rotor core 4 into a toroidal pole 2, the center of which is at the geometric center 1-1 of the rotor, and the profile is The I-shaped rotor core 4 serves as a passage for the magnetic circuit. A slot 9 is formed in the stator core 7, a coil 5 is embedded in the slot 9, and a set of radial X or y-axis coils 5 and slots 9 are provided on the two sides at a position 7-1 from the center of the stator core. The arcuate notch 8 and the pole face of the toroidal pole 2 are spaced apart from each other by the working air gap 12. It also has a toroidal axial The shaft control coil 10 is embedded in the shaft control slot 11, and the shaft control coil 10 has an annular shape centering on the center 7-1 of the stator core, and the shaft control slot 11 and the slot 9 are parallel to each other in the radial direction. The shaft control slot 11 is open on the side close to the working air gap 12, the axis coil 10 is parallel to the working air gap 12, and the axis coil 10 is located between the inner and outer edges of the coil 5. The thin loop line in the figure is the magnetic field line of the magnetic field when the current of each coil is zero. When the axis control coil 10 flows through the control current, it realizes the axial control force according to the magnetic flux emitted from the permanent magnet 3 on one side becomes larger, that is, the operating point of the permanent magnet 3 is variable. The radial force control is applied to the two sides of the rotor to achieve the axial force control without affecting the radial control force, and constitutes the radial and axial hybrid composite electromagnetic bearing of the present invention.

Figure 22 is a schematic view showing the basic magnetic field source of the present invention as a radial toroidal excitation winding on the stator. In cross-section, it includes a field winding 14 as a basic magnetic field source, a toroidal pole 2, a coil 5, a rotor 1, and a stator. The iron core 7, the working air gap 12, the implementation is that the two stator cores 7 and one of the intermediate rotors 1 are symmetrically arranged in an axial direction, and the toroidal surface of the field winding 14 mounted on the stator core 7 faces in the radial direction. The field winding 14 is wound around the block of the stator core 7, the field line slot 13 and the line groove 9 are parallel to each other in the radial direction, and the direction of the toroid of the field winding 14 is directed to the radial direction, and the field winding 14 is operated. The air gap 12 is vertical and the field winding 14 is located between the inner and outer edges of the coil 5. The magnetic field generated by the field winding 14 passes through the working air gap 12 and converges on the rotor core 4 into a toroidal pole 2, the center of the toroidal pole 2 is at the rotor geometric center 1-1, and the rotor core 4 serves as a path for the magnetic circuit. The pole face of the toroidal pole 2 is oriented in the axial direction. A wire slot 9 is formed on the stator cores 7 on both sides, and x and y-axis rectangular coordinate systems are established in the radial center 7-1 of the stator core. For the convenience of the installation of the coils 5, the stator cores 7 on each side are coordinated. The position of the axis is divided into four blocks, and only the section of the X-axis positive section is drawn on the figure. The wire slot 9 has a card coil 5 embedded therein, and the coils 5 and the wire grooves 9 on both sides are grouped by the coordinate axis, and are disposed at a position away from the center of the stator core 7-1. The slot 9 on both sides also has a circular arc slot 8 which has a circular arc center on the center 7-1 of the stator core, the radius of which is the same as that of the toroidal pole 2, and the narrow slot 8 of the arc The opening direction is an axial direction, which is aligned with the pole surface of the toroidal pole 2 and is aligned with the air gap 12, so that the coils 5 on both sides are in the magnetic field of the magnetic field lines as shown by the toroidal pole 2, which constitutes the Ampere force. Radial electromagnetic bearings.

Figure 23 is a schematic view showing the basic magnetic field source of the present invention as a radial toroidal excitation winding on the stator and used as a shaft control coil. In the sectional view, it includes a field winding 14, a toroidal pole 2, a coil 5, and a rotor core 4. The stator core 7, the working air gap 12, the magnetic field generated by the field winding 14 passes through the working air gap 12 and converges on the rotor core 4 into a toroidal pole 2, the center of which is at the geometric center 1-1 of the rotor, and the profile is The I-shaped rotor core 4 serves as a passage for the magnetic circuit. A slot 9 is formed in the stator core 7, a coil 5 is embedded in the slot 9, and a set of radial X or y-axis coils 5 and slots 9 are provided on the two sides at a position 7-1 from the center of the stator core. The arcuate notch 8 and the pole face of the toroidal pole 2 are spaced apart from each other by the working air gap 12. The toroidal radial excitation winding 14 can be used as the axial coil 10 at the same time, and the shaft control slot 11 is also the excitation slot 13, and the loop in the figure is Magnetic field lines of force when each coil current is zero. When the current flowing through the excitation windings 14 on both sides increases and decreases with the same amplitude, the magnetic flux generated by the excitation winding 14 on one side becomes larger on the other side, and the suction force is generated on both sides of the rotor without affecting the radial control force. The difference in axial force control constitutes the radial, axially mixed composite electromagnetic bearing of the present invention.

Figure 24 is a schematic view showing the basic magnetic field source of the present invention, which is an axial toroidal excitation winding on the stator. In the sectional view, it comprises a field winding 14, a toroidal pole 2, a coil 5, a rotor 1, a stator core 7, Working air gap 12, the implementation is that the two stator cores 7 and one intermediate rotor 1 are symmetrically arranged in axial direction, and the toroidal winding 14 of the field winding 14 mounted on the stator core is axially oriented, and the field winding 14 The ring is centered at the center 7-1 of the stator core, and the field winding slot 13 and the slot 9 are parallel to each other in the radial direction, and the field winding slot 13 is opened on the side close to the working air gap 12. The field winding 14 is parallel to the working air gap 12, and the field winding 14 is located between the inner and outer edges of the coil 5. The magnetic field generated by the field winding 14 passes through the working air gap 12 and converges on the rotor core 4 into a toroidal magnetic pole 2, the center of the toroidal pole 2 is at the geometric center 1-1 of the rotor, and the rotor core 4 serves as a passage for the magnetic circuit. The pole face of the toroidal pole 2 is oriented in the axial direction. A wire slot 9 is formed on the stator cores 7 on both sides, and x and y-axis rectangular coordinate systems are established in the radial center 7-1 of the stator core. For the convenience of the installation of the coil 5, the stator cores 7 on each side are coordinated. The position of the axis is divided into four blocks, and only the section of the X-axis positive section is drawn on the figure. The coil 9 is embedded in the slot 9 , and the coils 5 and the slots 9 on both sides are grouped by the coordinate axes and are located at a distance of 7-1 from the center of the stator core. The slot 9 on both sides also has a circular arc slot 8 , and the arc center of the arc slot 8 is at the center 7-1 of the stator core, the radius of which is the same as that of the ring pole 2, and the arc slot 8 The opening direction is an axial direction, which is aligned with the pole surface of the toroidal pole 2 and is aligned with the air gap 12, so that the coils 5 on both sides are in the magnetic field of the magnetic field lines as shown by the toroidal pole 2, which constitutes the Ampere force. Radial electromagnetic bearings.

Figure 25 is a schematic view showing the basic magnetic field source of the present invention as an axial toroidal excitation winding on the stator and used as a shaft control coil. In cross-section, it includes a field winding 14, a toroidal pole 2, a coil 5, and a rotor core 4. The stator core 7, the working air gap 12, the magnetic field generated by the field winding 14 passes through the working air gap 12 and converges on the rotor core 4 into a toroidal pole 2, the center of which is at the geometric center 1-1 of the rotor, and the profile is The I-shaped rotor core 4 serves as a passage for the magnetic circuit. A slot 9 is formed in the stator core 7, a coil 5 is embedded in the slot 9, and a set of radial X or y-axis coils 5 and slots 9 are provided on the two sides at a position 7-1 from the center of the stator core. The arcuate notch 8 and the pole face of the toroidal pole 2 are spaced apart from each other by the working air gap 12. The toroidal axial winding 14 can be used as the shaft coil 10 at the same time. The shaft control slot 11 is also the excitation line slot. The loop line in the figure is the magnetic field line of the magnetic field when the coil current is zero. When the current flowing through the excitation windings 14 on both sides increases and decreases with the same amplitude, the magnetic flux generated by the excitation winding 14 on one side becomes larger on the other side, and the suction force is generated on both sides of the rotor without affecting the radial control force. The difference in axial force control constitutes the radial, axially mixed composite electromagnetic bearing of the present invention.

Figure 26 is a schematic view showing the position of the coil and the ring-facing axial control coil of the present invention, wherein the coil 5 and the shaft control coil 10 are Arranged side by side, the loop of the coil 5 faces the axial direction, the toroidal surface of the shaft coil 10 is also oriented axially, and the shaft coil 10 is located between the outer edge 5-1 of the coil 5 and the inner edge 5-2.

Figure 27 is a schematic view showing the position of the coil and the ring-facing axially-oriented coil 10 of the present invention, wherein the coil 5 and the shaft-controlled coil 10 intersect, the loop of the coil 5 faces the axial direction, and the loop of the axial coil 10 faces the radial direction. The axis coil 10 is located between the outer edge 5-1 of the coil 5 and the inner edge 5-2. The present invention is not limited to the above embodiments. Other forms of the same basic concept as the present invention are also within the scope of the present invention.

The technical solution described in the present invention is designed to solve the technical problem to be solved by the present invention, and establishes the integrity of its technical content with respect to the technical problem to be solved. When it is implemented in a specific Ampere radial electromagnetic bearing or other product, the technical features necessary to realize the product may be more than the sum of the necessary technical features of the technical solution of the present invention for solving the technical problem.

The meanings of the technical features of the present invention are in accordance with the definitions of the proper nouns in the specification; the common knowledge and techniques in the technical field are not specifically defined, but the scope of the knowledge is limited by the technical problems and basic concepts to be solved by the present invention. The technical solution, in combination with the functions, functions and effects produced by the present invention, that is, with reference to the contents of the specification and the drawings thereof, the wording of the feature name is not a limitation of its meaning, so as to avoid the occurrence of The ambiguity of the invention.

The invention is further described, and the description of the present invention and the accompanying drawings are only for the purpose of explanation and understanding of the claims, and it should not be actively and actively involved in determining the scope of the claims, that is, not limiting, especially This is especially true of the unrelated content of the technical problem to be solved by the present invention. This article is the content of the manual.

Claims

Rights request

1. An ampere radial electromagnetic bearing comprising a stator (6) and a rotor (1), wherein the rotor (1) comprises a permanent magnet (3), a toroidal pole (2), and the stator (6) comprises a coil (5) The stator core (7) is a working air gap (12) between the rotor (1) and the stator (6), characterized in that the rotor (1) and the stator core (7) are axially juxtaposed. The center of the ring of the toroidal pole (2) is at the geometric center of the rotor (1-1), the pole face of the toroidal pole (2) is oriented axially, and the wire slot (9) is formed on the stator core (7). The groove (9) has a coil (5) embedded in it, and the x, y axis rectangular coordinate system is established radially in the center of the stator core (7-1), and the coil (5) and the wire groove (9) are pressed by x, y. The axes are grouped and arranged in the circumferential direction centering on the stator core (7-1), and the wire groove (9) also has a circular arc slot (8), and a circular arc slot (8) circle The center of the arc is at the center of the stator core (7-1). The radius of the narrow notch (8) of the arc is the same as the radius of the toroidal pole (2), and the direction of the opening of the narrow notch (8) is also axial. Arc narrow The port (8) is separated from the pole face of the toroidal pole (2) by a working air gap (12), and the narrow notch (8) of the arc is aligned with the pole face of the toroidal pole (2) to make the coil ( 5) In the magnetic field of the toroidal pole (2).

The amperometric radial electromagnetic bearing according to claim 1, further characterized in that: a stator (6) is provided on each side of the rotor (1) so as to be axially symmetrical.

3. The ampere radial electromagnetic bearing according to claim 1, further characterized in that: said stator core (7) is provided with two sets of coils (5) and corresponding two on the X-axis and the y-axis. The set of slots (9), the two sets of coils (5) in the same coordinate axis direction are respectively set on the positive and negative axes of the coordinate axis, and similarly, the two sets of wire slots (9) corresponding to the coil are also respectively set in On the positive and negative axes of the coordinate axis, the two sets of coils (5) have the same or different numbers of turns and dimensions.

The amperometric radial electromagnetic bearing according to claim 3, characterized in that: said stator core (7) is divided into four pieces symmetrically in accordance with the positions of the X-axis and the y-axis.

5. The amperometric radial electromagnetic bearing according to claim 2, characterized in that: said permanent magnet (3) on said rotor (1) is centered inside and outside the geometric center of the rotor (1-1) Two rings, the permanent magnet (3) itself forms a toroidal pole (2).

6. The amperometric radial electromagnetic bearing according to claim 2, further characterized in that: said rotor (1) is further provided with a rotor core (4), and the rotor core (4) is attracted to the permanent magnet (3) The channel that constitutes the magnetic circuit.

7. The amperometric radial electromagnetic bearing according to claim 2, further characterized in that: said stator core (7) has a z-axis perpendicular to the x, y coordinate axis, and the stator core (7) A shaft control slot (11) is also provided, and the shaft control coil (11) is embedded with a shaft control coil (10), and the loop edge of the shaft control coil (10) spans the center of the stator core (7-1). The suction type axial electromagnetic bearing is attached to the axial direction, that is, the z direction.

8. The ampere radial electromagnetic bearing of claim 2, further characterized by: said stator core (7) being built The z-axis perpendicular to the x and y axes, the stator core (7) also has a shaft control slot (11), and the shaft control slot (11) is embedded with an axis coil (10), the axis coil (10) The ring side does not cross the center of the stator core (7-1), and the ring face faces the X direction, or the y direction, and the suction type axial electromagnetic bearing is attached.

The amperometric radial electromagnetic bearing according to claim 1, further characterized in that: a stator (6) is provided on each side of the stator (6) so as to be axially symmetrical.

10. The amperometric radial electromagnetic bearing according to claim 9, further characterized in that: said stator core (7) has a z-axis perpendicular to the x, y coordinate axis, and the stator core (7) a shaft control slot (11) is also provided, and the shaft control coil (11) is embedded with an axis control coil (10), and the loop edge of the shaft control coil (10) spans the center of the stator core (7-1). The suction type axial electromagnetic bearing is attached to the axial direction, that is, the z direction.

11. An ampere radial electromagnetic bearing comprising a stator and a rotor, wherein: the rotor comprises a base magnetic field source, the stator comprises a coil, a stator core, and a working air gap is provided between the rotor and the stator, The rotor and the stator core are axially juxtaposed, and the side of the rotor that is in contact with the working air gap has a ring magnetic pole formed by the basic magnetic field source, and the center of the ring of the toroidal magnetic pole is at the geometric center of the rotor, and the pole face of the toroidal magnetic pole The orientation is axial, and an x, y-axis rectangular coordinate system is established at the center of the stator core, wherein the X-axis and the y-axis are both disposed along the radial direction of the stator core, and at least two slots are formed on the stator core, at least There is a wire slot along the _x- axis direction, and at least one other wire groove is along the y-axis direction, a coil is embedded in each of the wire grooves, and the end of the wire groove also has a narrow circular groove. The center of the arc of the narrow slot of the arc is at the center of the stator core. The radius of the narrow slot of the arc is the same as the radius of the toroidal pole. The direction of the opening of the narrow slot of the arc is also axial, and the narrow slot and circle of the arc Working between the pole faces of the ring magnetic pole The gaps are spaced apart, and the narrow slot of the arc is aligned with the pole face of the toroidal pole so that the coil is in the magnetic field of the toroidal pole.

12. The ampere radial electromagnetic bearing of claim 11 further characterized by: ???the total number of stators and rotors is two to three, and the stator and the rotor are alternately arranged in the axial direction.

13. The ampere radial electromagnetic bearing according to claim 11, further characterized in that: said stator core is equally divided into four in the circumferential direction of the stator, and one slot is provided in each stator core. And the coil corresponding to the slot.

14. The ampere radial electromagnetic bearing of claim 11 further characterized by: said base magnetic field source being a permanent magnet, two permanent magnets on the rotor, the permanent magnet being annular, and one of the permanent magnet rings More than another permanent magnet ring.

15. The ampere radial electromagnetic bearing of claim 11 further characterized by: said basic magnetic field source being a permanent magnet, one or two permanent magnets on the rotor, and the permanent magnet being annular, in the permanent magnet One side is provided with a rotor core, and the rotor core and the permanent magnet are arranged side by side in the axial direction.

16. The ampere radial electromagnetic bearing of claim 11 further characterized by: a toroidal magnetic pole on said rotor It is the permanent magnet itself.

17. The ampacity radial electromagnetic bearing of claim 11 further characterized by: said toroidal magnetic pole on said rotor being formed from a rotor core.

18. The ampere radial electromagnetic bearing according to claim 11, further characterized in that: each of said trunkings is formed by two concentric arc sub-grooves, each of which has a ring. The closed coil has a circular arc slot at both ends of the slot, and the arc slot is filled with a high reluctance medium.

19. An ampere-composite electromagnetic bearing formed by the ampere radial electromagnetic bearing of claim 11, characterized in that: the stator core is provided with a shaft control trunk, and the shaft control trunk is embedded therein Shaft control coil.

20. The ampere radial electromagnetic bearing according to claim 19, wherein: the axis control coil has a ring shape centered on a center of the stator core, and the axis control wire groove and the wire groove are parallel to each other in the radial direction. The axis control slot opening is on a side close to the working air gap, the direction of the toroid of the axis coil is axial, the axis coil is parallel to the working air gap, and the axis coil is located at the inner and outer sides of the coil between.

21. The ampere radial electromagnetic bearing of claim 19, further characterized by: the axis coil is wound around the stator core, the axis control slot and the slot are parallel to each other in the radial direction, and the axis coil The direction of the torus is radial, the axis coil is perpendicular to the working air gap, and the axis coil is located between the inner and outer edges of the coil.

22. An ampere radial electromagnetic bearing comprising a stator and a rotor, wherein the stator comprises a base magnetic field source, further comprising a coil, a stator core, a working air gap between the rotor and the stator, the rotor and the stator iron The core is axially juxtaposed, and the rotor side connected to the working air gap is formed by a rotor core forming a toroidal magnetic pole, the ring center of the toroidal magnetic pole is at the geometric center of the rotor, and the pole face of the toroidal magnetic pole is oriented axially. An x, y-axis rectangular coordinate system is established at the center of the stator core, wherein the X-axis and the y-axis are both disposed along the radial direction of the stator core, and at least two slots are formed on the stator core, at least one of which is along the slot In the X-axis direction, and at least one other slot is along the y-axis direction, each of the slots is embedded with a coil, and the end of the slot has a narrow arc slot, the arc slot The center of the arc is at the center of the stator core. The radius of the narrow slot of the arc is the same as the radius of the toroidal pole. The direction of the opening of the narrow slot of the arc is also the axial direction. The narrow slot of the arc and the pole face of the toroidal pole Separated by working air gaps and narrow arc The notch is aligned with the pole face of the toroidal pole so that the coil is in the magnetic field guided by the toroidal pole.

23. The ampere radial electromagnetic bearing according to claim 22, further characterized by: the rotor core on the rotor is two, the rotor core is annular, and one rotor core ring is larger than the other rotor Iron core ring.

24. The ampacity radial electromagnetic bearing of claim 22, further characterized by: said toroidal magnetic poles on said rotor being two or four.

25. The ampere radial electromagnetic bearing of claim 22, further characterized by: said stator base magnetic field source is Permanent magnet or field winding.

The ampere radial electromagnetic bearing according to claim 22, wherein: the magnetic field direction of said stator magnetic field source is radial, that is, the magnetic pole surface of the permanent magnet or the toroidal surface of the exciting winding coil faces Radial.

27. The amperometric radial electromagnetic bearing according to claim 26, further characterized in that: the field winding is wound around the block of the stator core, and the field line slot and the line groove are parallel to each other in the radial direction, and the toroidal surface of the field winding is The direction is radial, the field winding is perpendicular to the working air gap, and the field winding is located between the inner and outer edges of the coil.

The ampere radial electromagnetic bearing according to claim 26, wherein: the field winding has a ring shape centered on a center of the stator core, and the field winding groove and the wire groove are parallel to each other in the radial direction. The field winding slot opening is on the side close to the working air gap, the direction of the toroid of the field winding is oriented in the axial direction, the field winding is parallel to the working air gap, and the field winding is located between the inner and outer edges of the coil.

29. An ampere-composite electromagnetic bearing formed by an ampere radial electromagnetic bearing according to the claims, wherein: the stator core is provided with a shaft control slot, and the shaft control slot has a shaft embedded therein Control coil.

30. The ampere radial electromagnetic bearing according to claim 29, wherein: the shaft control coil has an annular shape centered on a center of the stator core, and the axial groove and the slot are parallel to each other in a radial direction. The axis control slot opening is on a side close to the working air gap, the direction of the toroid of the axis coil is axial, the axis coil is parallel to the working air gap, and the axis coil is located at the inner and outer edges of the coil between.

31. The ampere radial electromagnetic bearing of claim 29, wherein: the axis coil is wound around the stator core, and the axis control slot and the slot are parallel to each other in the radial direction, and the axis is controlled. The direction of the toroid of the coil is radial, the axis coil is perpendicular to the working air gap, and the axis coil is located between the inner and outer edges of the coil.

32. The ampere radial electromagnetic bearing of claim 29, wherein: the shaft control coil and the field winding are the same component, and the field winding slot and the shaft control slot are also the same slot.