CN113131632A - Pneumatic pressure source magnetic flux adjusting device - Google Patents
Pneumatic pressure source magnetic flux adjusting device Download PDFInfo
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- CN113131632A CN113131632A CN202110402117.2A CN202110402117A CN113131632A CN 113131632 A CN113131632 A CN 113131632A CN 202110402117 A CN202110402117 A CN 202110402117A CN 113131632 A CN113131632 A CN 113131632A
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- magnetic flux
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/12—Stationary parts of the magnetic circuit
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/08—Structural association with bearings
- H02K7/083—Structural association with bearings radially supporting the rotary shaft at both ends of the rotor
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
- H02K9/02—Arrangements for cooling or ventilating by ambient air flowing through the machine
- H02K9/04—Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2213/00—Specific aspects, not otherwise provided for and not covered by codes H02K2201/00 - H02K2211/00
- H02K2213/09—Machines characterised by the presence of elements which are subject to variation, e.g. adjustable bearings, reconfigurable windings, variable pitch ventilators
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
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- Power Engineering (AREA)
- Magnetic Bearings And Hydrostatic Bearings (AREA)
Abstract
The invention discloses a pneumatic pressure source magnetic flux adjusting device, which comprises a magnetic flux adjusting mechanism, wherein the magnetic flux adjusting mechanism comprises a magnetic flux adjusting block, a windward ring, a main hydraulic device and an auxiliary hydraulic device, the slotted stator is provided with the magnetic flux adjusting block, both ends of the slotted stator are provided with the windward ring, the windward ring is connected with the slotted stator through the main hydraulic device and is connected with the magnetic flux adjusting block through the auxiliary hydraulic device, the central part of the slotted stator is provided with a rotating shaft with an air bearing, the air bearing is provided with an air inlet hole and an air outlet hole, the periphery of the slotted stator is provided with a shell, and the shell is uniformly provided with air outlets; the air bearing is inflated through an air inlet hole on the air bearing, the inflated air flows to the windward ring from the air outlet hole, the windward ring keeps stable or moves under the combined action of the pressure of the inflowing air and the pressure of liquid of the main hydraulic press and the auxiliary hydraulic press, and the inflowing air finally flows out of an air outlet on the shell. The invention drives the magnetic flux modulation block to move in the back groove of the stator through the air bearing and the hydraulic press so as to modulate magnetism and cool the motor.
Description
Technical Field
The invention relates to the field of motors, in particular to a pneumatic pressure source magnetic flux adjusting device.
Background
The back-wound winding is mainly applied to the field of high-speed motors, and the high-speed permanent magnet generator has the advantages of simple structure, small loss, low vibration and noise, quick dynamic response, high power density, high transmission system efficiency, reliable operation and the like, becomes key power equipment of a distributed energy supply system of a micro gas turbine, and meets the requirement of the micro gas turbine power generation system on the development towards miniaturization and integration; back of the body winding formula winding is at stator inside groove and stator back of the body groove respectively, high speed motor uses back of the body winding formula winding can reduce winding end length, thereby reduce the axial length of rotor in order to realize the effect of reinforcing rotor mechanical strength, but half winding of back of the body winding formula winding is located the stator back, cause the winding low-usage and can produce the winding magnetic leakage, the magnetic leakage can get into the casing, at casing surface induction eddy current, can produce adverse effect to high speed motor, and general high speed motor when its pivot rotates, often need rotate with other mechanical connections, cause mechanical wear, the maintenance cost is high.
High-speed motor axial length is a lot of than ordinary motor under the same power, so the winding length on the back of the body winding formula winding total length on the high-speed motor can be than ordinary motor is long, and winding length is long can lead to the motor copper to consume to increase, and the heat of production increases, if can not effectually dispel the heat to high-speed motor, can produce adverse effect to high-speed motor's operation, and is further, can influence high-speed motor's life.
Disclosure of Invention
The technical problem to be solved by the invention is to overcome the defects of the prior art and provide a pneumatic pressure source magnetic flux adjusting device, wherein an air bearing and a hydraulic press are utilized to move the position of a magnetic flux modulating block in a back groove of a stator so as to realize magnetic flux modulation and motor cooling.
The technical scheme adopted by the invention for solving the technical problem is as follows:
a pneumatic pressure source magnetic flux adjusting device comprises a magnetic adjusting mechanism, wherein the magnetic adjusting mechanism is arranged on a slotted stator, stator inner grooves and stator back grooves which are symmetrical to each other and provided with back-wound windings are arranged on the slotted stator, the magnetic adjusting mechanism comprises a magnetic flux modulating block, a hydraulic press and a windward ring, the hydraulic press comprises a main hydraulic press and an auxiliary hydraulic press, the magnetic flux modulating block is respectively arranged in each stator back groove slot on the slotted stator, the windward ring is arranged at two ends of the slotted stator, the windward ring is connected with the slotted stator through the main hydraulic press, the auxiliary hydraulic press is connected with the magnetic flux modulating block, a rotating shaft which is coaxial with the slotted stator is arranged at the hollow position of the central part of the slotted stator, two ends of the rotating shaft are respectively provided with an air bearing, and the air bearing is provided with an air inlet hole and an air outlet hole, the periphery of the slotted stator is connected with the shell through a connecting column, and air outlets penetrating through the shell are radially and symmetrically distributed on the shell; the air bearing is inflated through the air inlet hole in the air bearing, the inflated air flows to the windward ring from the air outlet hole, the windward ring keeps stable or moves under the combined action of the pressure of the inflowing air and the liquid pressure of the main liquid pressure device and the auxiliary liquid pressure device, and the inflowing air finally flows out of the air outlet hole in the shell.
The upper end and the lower end of the magnetic flux modulation block extend out of the upper end and the lower end of the stator back groove, the main hydraulic press is a linear hydraulic press, one end of the linear main hydraulic press is connected with one surface, facing the slotted stator, of the windward ring, the other end of the linear main hydraulic press is connected with the end surface of the slotted stator, so that the main hydraulic press can drive the windward ring to be close to or far away from the two end surfaces of the slotted stator, the auxiliary hydraulic press is an L-shaped hydraulic press, one end of the L-shaped auxiliary hydraulic press is connected with one surface, facing the slotted stator, of the windward ring, the other end of the L-shaped auxiliary hydraulic press is connected with a part, extending out of the stator back groove, of the magnetic flux modulation block, and the connection part is one surface, facing the stator back groove, of the magnetic flux modulation block, so that the magnetic flux.
The both ends of casing all are provided with the casing end cover, the central point department of putting of casing end cover is provided with the connecting hole, the internal diameter of connecting hole with air bearing's external diameter phase-match, air bearing one end sets up in the connecting hole, the other end protrusion the connecting hole, and convex position is located the casing end cover outside, the both ends of pivot all stretch out the connecting hole.
The inlet port sets up air bearing keeps away from in the one side of pivot, and be located the outside of casing end cover, the venthole equipartition is in air bearing towards the one side of windward ring and keep away from in the one side of windward ring, so that the pivot atress is even, and makes towards in the one side of windward ring the gas that blows out in the venthole can blow to on the windward ring, on the windward ring towards air bearing's one side sets up to the concave surface, so that blow to the gas on the windward ring can gather together, produces the effort.
The two sides of one end face of the magnetic flux modulation block corresponding to the bottom of the stator back groove are respectively provided with a first buckle protruding towards the two side walls of the stator back groove, the two ends of the opening of the stator back groove are respectively provided with a second buckle protruding towards the magnetic flux modulation block, and the first buckle and the second buckle are arranged in a matched mode to prevent the magnetic flux modulation block from being separated from the stator back groove under the pushing of overlarge gas pressure.
The main hydraulic devices are symmetrically and uniformly distributed on one surface, facing the slotted stator, of the windward ring, and the auxiliary hydraulic devices are symmetrically and uniformly distributed on one surface, facing the slotted stator, of the windward ring.
The flux modulation block is made of a magnetically permeable material.
Every all be provided with the air outlet valve that can control the air output in the venthole, be provided with two at least on the windward ring and separate the groove, separate the groove will the windward ring falls into two sections at least, every section the windward ring is not connected each other, every section all corresponding there is the venthole on the windward ring, utilizes every section of air outlet valve control the last gaseous air output of corresponding venthole of windward ring can make the interior air output of air outlet of difference inconsistent, utilizes the air output difference can be controlled respectively rather than corresponding alone the windward ring.
The invention has the following positive beneficial effects:
half of the back winding is arranged in the back groove of the stator, so that the back winding can generate a strong magnetic field, a magnetic flux modulation block made of magnetic conductive materials is arranged in each back groove of the stator, a windward ring and an air bearing are arranged at two ends of the slotted stator, the windward ring is connected with the slotted stator through a main liquid pressure device, the windward ring is connected with the magnetic flux modulation block through an L-shaped auxiliary liquid pressure device, the air bearing is inflated to rotate, the inflated gas can be blown out from an air outlet, the blown gas acts on the windward ring, so that the windward ring moves towards the direction of the slotted stator under the pressure action of the gas, at the moment, the main liquid pressure device starts to contract, the L-shaped auxiliary liquid pressure device is positioned at one end of the windward ring to contract and is positioned at one end of the magnetic flux modulation block to start to extend, the magnetic flux modulation block can start to synchronously act along with the action of the liquid pressure device, and the magnetic flux modulation block is driven by the L-shaped auxiliary liquid pressure device, when the magnetic flux modulation block moves, the magnetic circuit structure of the stator is changed, so that the magnetic field of the stator is changed, and dynamic magnetic flux modulation can be realized.
The gas on the air bearing can flow into the motor, the gas flowing into the motor can be blown out through the gas outlet formed in the shell, and the flowing of the air can take away a part of heat on the motor, so that the better heat dissipation of the motor can be facilitated.
The magnetic flux modulation block can generate position movement or stability under the combined action of the gas pressure in the air bearing and the liquid pressure in the hydraulic press; when the gas pressure in the air bearing is greater than the liquid pressure in the hydraulic press, the windward ring can move towards the stator of slotting, the vice hydraulic press of L type moves when moving, the vice hydraulic press of L type can promote the magnetic flux and modulate the piece and move to the opening direction of stator back of the body groove, at this moment, the distance grow between the piece is modulated to the magnetic flux and the stator back of the body inslot winding, the area that the magnetic flux modulated the piece and expose outside the stator of slotting can be bigger and bigger, cooling motor that can be better, play radiating effect.
The invention is provided with the first buckle and the second buckle which are matched with each other at the notch of the magnetic flux modulation block and the stator back groove, so that the magnetic flux modulation block can be prevented from being separated from the stator back groove under the pushing of overlarge liquid pressure, and stable and continuous magnetic modulation is realized.
In the back winding type high-speed motor, the air bearing is used for rotating the rotating shaft, and has the characteristics of no contact and no lubrication, so that the air bearing motor has the advantages of no mechanical wear and low maintenance cost.
The air output of the air bearing determines the moving direction of the magnetic flux modulating block in the back groove of the stator, and the main hydraulic device and the L-shaped auxiliary hydraulic device have the functions of fixing, stretching and rebounding, wherein the L-shaped auxiliary hydraulic device can change the axial force into the radial force, and when one end of the L-shaped auxiliary hydraulic device contracts, the other end of the L-shaped auxiliary hydraulic device stretches.
When the air output, namely the gas pressure, in the air bearing is not larger than the liquid pressure of the hydraulic press, the magnetic flux modulation block is tightly attached to the back groove of the stator under the action of the L-shaped auxiliary hydraulic press, the magnetic flux modulation block is positioned in the back groove of the stator at the moment, the magnetic force lines on the back pass through the magnetic flux modulation block and then pass through the magnetic circuit of the stator, the magnetic flux modulation block participates in the magnetic circuit of the motor, the magnetic field generated by the back winding type winding influences the magnetic field in the stator, and the function of adjusting induced electromotive force and harmonic wave is achieved, as shown in figure 13.
When the air output, i.e. the air pressure, in the air bearing is greater than the liquid pressure of the hydraulic press, the windward ring moves towards the slotted stator and drives the L-shaped auxiliary hydraulic press to move, at the same time, the main hydraulic press contracts, one end of the L-shaped auxiliary hydraulic press, which is positioned on the windward ring, contracts, one end of the magnetic flux modulation block begins to extend, the magnetic flux modulation block begins to synchronously move along with the movement of the hydraulic press, that is, the L-shaped secondary hydraulic device pushes the magnetic flux modulation block to move towards the opening direction of the stator back slot, at this time, the magnetic flux modulation block is in a dynamic working state, a small part of the magnetic flux modulation block slides out of the stator back slot under the action of liquid pressure, a part of magnetic lines of force pass through the magnetic flux modulation block and then pass through the stator magnetic circuit, at this time, the interaction coupling between the back magnetic field and the main magnetic field is reduced, and the magnetic field generated by the back-wound winding influences the magnetic field effect in the stator to be reduced, as shown in; the magnetic flux modulation block is farther and farther away from the winding in the back groove of the stator under the action of the thrust of the hydraulic press, so that the original magnetic circuit structure of the motor is changed, and the local magnetic field of the winding of the yoke part of the motor is changed.
When most of the magnetic flux modulation blocks slide out of the stator back groove, magnetic lines of force do not pass through the magnetic flux modulation blocks, a magnetic field generated by the back winding type winding does not interact with a main magnetic field, so that the magnetic field generated by the surrounding type winding does not influence a magnetic field in the stator, and the magnetic flux modulation blocks reach a non-magnetic-modulation working state, as shown in the attached figure 15.
When the air output, namely the gas pressure, in the air bearing is gradually reduced, and the liquid pressure of the hydraulic press is greater than the gas pressure, the hydraulic press drives the magnetic flux modulation block to move towards the bottom of the stator back groove, at the moment, the main hydraulic press starts to extend, the L-shaped auxiliary hydraulic press starts to extend at one end of the windward ring, the end of the magnetic flux modulation block starts to compress, the magnetic flux modulation block approaches the winding in the stator back groove more and more, so that the magnetic circuit structure of the motor is gradually restored, and the magnetic circuit structure of the motor is not completely restored until the main hydraulic press and the L-shaped auxiliary hydraulic press restore to the original positions.
Through the size of the air output of the air bearing, the position of the magnetic flux modulation block in the stator back groove is automatically changed, the magnetic circuit structure of the motor is changed, the local magnetic field can be dynamically enhanced or weakened, the shape of the local magnetic field in the stator and the induced electromotive force of the motor are changed, the performance requirements of the motor in different environments are met, the application range and the application capability of the magnetic flux modulation are improved, and the fault-tolerant operation capability of the motor is also improved.
The air outlet valves capable of controlling air output are arranged in each air outlet, the windward ring is divided into at least two sections by the separating grooves, the air output of the corresponding air outlet on each windward ring is controlled by the air outlet valves, the air output of the air outlet in different air outlets is inconsistent, the windward rings corresponding to the air outlet can be independently and respectively controlled by the air output difference, the magnetic flux modulation blocks can independently act, the asymmetric adjustment of the magnetic flux modulation blocks can be realized, the adjustment range of induced electromotive force is increased, the asymmetric magnetic adjustment is realized, and the fault-tolerant operation capability is improved.
Drawings
FIG. 1 is a schematic view of a pneumatic pressure source flux modulating unit of the present invention positioned on a slotted stator;
FIG. 2 is a schematic view of the structure of FIG. 1 with the housing added;
FIG. 3 is a schematic view of the structure of FIG. 2 with the addition of the end caps of the housing;
FIG. 4 is a schematic structural diagram between the windward rings at two ends and the magnetic flux modulation block in FIG. 1;
FIG. 5 is a schematic structural diagram between the windward ring at one end and the magnetic flux modulating block in FIG. 4;
FIG. 6 is a schematic view of the structure between the windward ring and the main and auxiliary hydraulic devices of FIG. 4;
FIG. 7 is a schematic view of the construction of the slotted stator of FIG. 1;
FIG. 8 is a schematic view of the structure in the direction A in FIG. 1;
FIG. 9 is an enlarged view of the B structures of FIG. 8;
FIG. 10 is a view showing a positional relationship between the first catch and the second catch of FIG. 9;
FIG. 11 is a schematic view of the structure between the rotating shaft and the air bearing in FIG. 1;
FIG. 12 is a gas flow diagram of a pneumatic pressure source flux modulating device of the present invention after being placed on a slotted stator and being inflated with gas;
FIG. 13 is a schematic diagram of the main hydraulic device of FIG. 1 and the main hydraulic device operating pattern;
FIG. 14 is a schematic diagram of the construction of the secondary hydraulic device of FIG. 1 and the operational profile of the secondary hydraulic device;
FIG. 15 is a magnetic flux distribution plot of a flux modulation block in a dynamic equilibrium state;
FIG. 16 is a magnetic flux distribution plot of a flux modulation block in a dynamic operating state;
FIG. 17 is a magnetic flux distribution diagram of the flux modulating block in the non-modulating operating condition;
fig. 18 is a schematic structural view of the windward ring divided into two sections according to the present invention.
Detailed Description
The invention will be further explained and explained with reference to the drawings and the specific embodiments:
referring to figures 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17 and 18,
in the figure: 1-slotted stator, 2-back winding type winding, 3-stator inner groove, 4-stator back groove, 5-windward ring, 6-magnetic flux modulation block, 7-main hydraulic device, 8-auxiliary hydraulic device, 9-machine shell, 10-air outlet, 11-machine shell end cover, 12-connecting hole, 13-rotating shaft, 14-air bearing, 15-air inlet hole, 16-air outlet hole, 17-first buckle, 18-second buckle and 19-partition groove.
Example (b): the utility model provides a pneumatic pressure source magnetic flow adjusting device, including adjusting magnetic mechanism, it sets up on slotted stator 1 to adjust magnetic mechanism, be provided with stator inside groove 3 and stator back of the body groove 4 that have back of the body wound winding 2 of mutual symmetry on slotted stator 1, it includes the hydraulic press to adjust magnetic mechanism, windward ring 5 and the magnetic flow modulation piece 6 of being made by magnetic conductive material, the hydraulic press includes main hydraulic press 7 and vice hydraulic press 8, main hydraulic press 7 is the linear type hydraulic press, vice hydraulic press 8 is L type hydraulic press, it is provided with magnetic flow modulation piece 6 respectively to divide equally in every stator back of the body groove 4 fluting on slotted stator 1, the upper and lower both ends of magnetic flow modulation piece 6 stretch out the upper and lower both ends of stator back of the body groove 4, the both ends of slotted stator 1 all are provided with windward ring 5.
The windward ring 5 is connected with the slotted stator 1 through the main hydraulic device 7, one end of the main hydraulic device 7 is connected with one surface, facing the slotted stator 1, of the windward ring 5, and the other end of the main hydraulic device is connected with the end face of the slotted stator 1, so that the main hydraulic device 7 can drive the windward ring 5 to be close to or far away from the two end faces of the slotted stator 1.
The windward ring 5 is connected with the magnetic flux modulation block 6 through an auxiliary hydraulic device 8, one end of the auxiliary hydraulic device 8 is connected with one surface of the windward ring 5 facing the slotted stator 1, the other end of the auxiliary hydraulic device 8 is connected with a part of the magnetic flux modulation block 6 extending out of the stator back groove 4, and the connection part is the surface of the magnetic flux modulation block 6 facing the stator back groove 4, so that the magnetic flux modulation block 6 can move outwards under the pushing of the auxiliary hydraulic device 8.
The periphery of the slotted stator 1 is connected with a casing 9 through a connecting column, and air outlets 10 penetrating through the casing 9 are radially and symmetrically distributed on the casing 9; casing end covers 11 are arranged at two ends of the casing 9, and a connecting hole 12 is arranged at the center of each casing end cover 11.
The hollow position of the central part of the slotted stator 1 is provided with a rotating shaft 13 which is coaxial with the slotted stator, two ends of the rotating shaft 13 are respectively provided with an air bearing 14, the air bearing 14 is provided with an air inlet hole 15 and an air outlet hole 16, the air inlet hole 15 is arranged on one side, far away from the rotating shaft 13, of the air bearing 14 and is positioned on the outer side of the shell end cover 11, the air outlet holes 16 are uniformly distributed on one side, facing the windward ring 5, of the air bearing 14 and one side, far away from the windward ring 5, of the air bearing 14, so that the force on the rotating shaft 13 is uniform, the air blown out from the air outlet hole 16 on one side, facing the windward ring 5, can be blown onto the windward ring 5, and the side, facing the air bearing 14, on the windward ring 5, is provided with a concave surface and is a.
The inner diameter of the connecting hole 12 is matched with the outer diameter of the air bearing 14, one end of the air bearing 14 is arranged in the connecting hole 12, the other end of the air bearing protrudes out of the connecting hole 12, the protruding part is positioned on the outer side of the shell end cover 11, and two ends of the rotating shaft 13 extend out of the connecting hole 12.
The air bearing 14 is inflated through the air inlet holes 15 on the air bearing 14, the inflated air flows to the windward ring 5 from the air outlet holes 16, the windward ring 5 is kept stable or moves under the combined action of the pressure of the inflowing air and the liquid pressure of the main liquid pressure device 7 and the auxiliary liquid pressure device 8, and the inflowing air finally flows out of the air outlet 10 on the shell 9.
The two sides of one end face, corresponding to the bottom of the stator back groove 4, of the magnetic flux modulation block 6 are respectively provided with a first buckle 17 protruding towards the two side walls of the stator back groove 4, the two ends of the notch of the stator back groove 4 are respectively provided with a second buckle 18 protruding towards the magnetic flux modulation block 6, and the first buckle 17 and the second buckle 18 are matched to prevent the magnetic flux modulation block 6 from being separated from the stator back groove 4 under the pushing of overlarge gas pressure.
The main hydraulic devices 7 are symmetrically and uniformly distributed on one surface, facing the slotted stator 1, of the windward ring 5, and the auxiliary hydraulic devices 8 are symmetrically and uniformly distributed on one surface, facing the slotted stator 1, of the windward ring 5.
When the motor runs, air, namely air, can be discharged from the air outlet holes 16 in the air bearings 14 at the two ends of the motor, the air impacts the windward ring 5 to generate acting force, the magnetic flux modulation block 6 is placed in the stator back groove 4, the end parts of the magnetic flux modulation block 6 are fixedly connected by the L-shaped auxiliary hydraulic device 8, when the motor is accelerated, the air quantity of the air outlet holes 16 on the air bearings 14 is increased, the air flow and the flow rate are increased, the axial acting force borne by the windward ring 5 is increased, so that the main hydraulic device 7 fixed on the slotted stator 1 is contracted, the L-shaped auxiliary hydraulic device 8 is contracted when being connected with the windward ring 5, the end connected with the magnetic flux modulation block 6 is extended, the magnetic flux modulation block 6 moves, the magnetic flux modulation block 6 is far away from the winding of the stator back groove 4, the original magnetic circuit structure of the motor is; when the motor is decelerated, the air quantity of an air outlet hole 16 of an air bearing 14 is reduced, the air flow and the flow velocity are reduced, the axial acting force borne by a windward ring 5 is reduced, so that a main hydraulic device 7 fixed on a slotted stator 1 is rebounded, an L-shaped auxiliary hydraulic device 8 is connected with the end of the windward ring 5 to extend and is connected with the end of a magnetic flux modulation block 6 to contract, the magnetic flux modulation block is closer to a winding of a stator back groove 4, the magnetic circuit structure of the motor is recovered, and the local magnetic field of a winding of a yoke part of the motor is, under the action of air wind current generated by the air bearing 14, the movement of the magnetic flux modulation device is automatically adjusted, the magnetic circuit structure of the motor is changed, the local magnetic field can be dynamically enhanced or weakened, the shape of the local magnetic field in the stator and the induced electromotive force of the motor are changed, therefore, the performance requirements of the motor in different environments are met, the application range and the application capability of magnetic flux modulation are improved, and the fault-tolerant operation capability of the motor is also improved; air in the air outlet hole 16 of the air bearing 14 can flow into the motor, air flowing into the motor can be blown out through the air outlet 10 arranged on the machine shell 9, and a part of heat on the motor can be taken away by the flowing of the air, so that the better heat dissipation of the motor can be facilitated.
Example 2: the difference from the embodiment 1 is that: each air outlet 16 is internally provided with an air outlet valve capable of controlling air output, the windward ring 5 is provided with at least two partition grooves 19, the partition grooves 19 divide the windward ring 5 into at least two sections, each section of windward ring 5 is not connected with each other, each section of windward ring 5 is provided with an air outlet 16 correspondingly, the air outlet valve is used for controlling the air output of the corresponding air outlet 16 on each section of windward ring 5, the air output in different air outlets 16 can be inconsistent, the air output difference can be used for independently and respectively controlling the corresponding windward rings 5, so that the part of the magnetic flux modulation block 6 independently acts, the asymmetric adjustment of the magnetic flux modulation block 6 can be realized, the adjustment range of induced electromotive force is increased, the asymmetric magnetic modulation is realized, and the fault-tolerant operation capability is increased.
The invention is not limited to the above embodiments, and those skilled in the art can make equivalent modifications or substitutions without departing from the spirit of the invention, and such equivalent modifications or substitutions are included in the scope defined by the claims of the present application.
Claims (8)
1. The utility model provides a pneumatic pressure source magnetic flow adjusting device, includes and transfers magnetic mechanism, transfer magnetic mechanism sets up on the fluting stator, be provided with mutual symmetry have the stator inside groove and the stator back of the body groove of back winding formula winding on the fluting stator, characterized by: the magnetic regulating mechanism comprises a magnetic flux regulating block, a hydraulic press and a windward ring, the hydraulic press comprises a main hydraulic press and an auxiliary hydraulic press, the magnetic flux regulating block is arranged in each stator back groove slot on the slotted stator, the windward ring is arranged at each end of the slotted stator, the windward ring is connected with the slotted stator through the main hydraulic press and is connected with the magnetic flux regulating block through the auxiliary hydraulic press, a rotating shaft which is coaxial with the slotted stator is arranged at the hollow position of the central part of the slotted stator, two ends of the rotating shaft are respectively provided with an air bearing, an air inlet hole and an air outlet hole are arranged on each air bearing, the periphery of the slotted stator is connected with the shell through a connecting column, and air outlets penetrating through the shell are radially and symmetrically distributed on the shell; the air bearing is inflated through the air inlet hole in the air bearing, the inflated air flows to the windward ring from the air outlet hole, the windward ring keeps stable or moves under the combined action of the pressure of the inflowing air and the liquid pressure of the main liquid pressure device and the auxiliary liquid pressure device, and the inflowing air finally flows out of the air outlet hole in the shell.
2. A pneumatic pressure source flux modulating unit as defined in claim 1, further comprising: the upper end and the lower end of the magnetic flux modulation block extend out of the upper end and the lower end of the stator back groove, the main hydraulic press is a linear hydraulic press, one end of the linear main hydraulic press is connected with one surface, facing the slotted stator, of the windward ring, the other end of the linear main hydraulic press is connected with the end surface of the slotted stator, so that the main hydraulic press can drive the windward ring to be close to or far away from the two end surfaces of the slotted stator, the auxiliary hydraulic press is an L-shaped hydraulic press, one end of the L-shaped auxiliary hydraulic press is connected with one surface, facing the slotted stator, of the windward ring, the other end of the L-shaped auxiliary hydraulic press is connected with a part, extending out of the stator back groove, of the magnetic flux modulation block, and the connection part is one surface, facing the stator back groove, of the magnetic flux modulation block, so that the magnetic flux.
3. A pneumatic pressure source flux modulating unit as defined in claim 2, further comprising: the both ends of casing all are provided with the casing end cover, the central point department of putting of casing end cover is provided with the connecting hole, the internal diameter of connecting hole with air bearing's external diameter phase-match, air bearing one end sets up in the connecting hole, the other end protrusion the connecting hole, and convex position is located the casing end cover outside, the both ends of pivot all stretch out the connecting hole.
4. A pneumatic pressure source flux modulating unit as defined in claim 3, further comprising: the inlet port sets up air bearing keeps away from in the one side of pivot, and be located the outside of casing end cover, the venthole equipartition is in air bearing towards the one side of windward ring and keep away from in the one side of windward ring, so that the pivot atress is even, and makes towards in the one side of windward ring the gas that blows out in the venthole can blow to on the windward ring, on the windward ring towards air bearing's one side sets up to the concave surface, so that blow to the gas on the windward ring can gather together, produces the effort.
5. A pneumatic pressure source flux modulating unit as defined in claim 1, further comprising: the two sides of one end face of the magnetic flux modulation block corresponding to the bottom of the stator back groove are respectively provided with a first buckle protruding towards the two side walls of the stator back groove, the two ends of the opening of the stator back groove are respectively provided with a second buckle protruding towards the magnetic flux modulation block, and the first buckle and the second buckle are arranged in a matched mode to prevent the magnetic flux modulation block from being separated from the stator back groove under the pushing of overlarge gas pressure.
6. The liquid-cooled impingement dome flux conditioning apparatus as defined in claim 2, wherein: the main hydraulic devices are symmetrically and uniformly distributed on one surface, facing the slotted stator, of the windward ring, and the auxiliary hydraulic devices are symmetrically and uniformly distributed on one surface, facing the slotted stator, of the windward ring.
7. The pneumatic pressure source flux modulating unit of claim 5, wherein: the flux modulation block is made of a magnetically permeable material.
8. The pneumatic pressure source flux modulating unit of claim 4, wherein: every all be provided with the air outlet valve that can control the air output in the venthole, be provided with two at least on the windward ring and separate the groove, separate the groove will the windward ring falls into two sections at least, every section the windward ring is not connected each other, every section all corresponding there is the venthole on the windward ring, utilizes every section of air outlet valve control the last gaseous air output of corresponding venthole of windward ring can make the interior air output of air outlet of difference inconsistent, utilizes the air output difference can be controlled respectively rather than corresponding alone the windward ring.
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| CN202110402117.2A CN113131632B (en) | 2021-04-14 | 2021-04-14 | Pneumatic pressure source magnetic flux adjusting device |
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| CN104852630A (en) * | 2014-02-18 | 2015-08-19 | 林英楠 | Controllable magnetic-circuit permanent magnet power device |
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| CN112204860A (en) * | 2018-05-31 | 2021-01-08 | 日本电产株式会社 | Motor |
| CN112366845A (en) * | 2020-12-17 | 2021-02-12 | 哈尔滨理工大学 | High-efficiency back-wound winding tooth-groove-free permanent magnet synchronous motor |
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|---|---|---|---|---|
| CN104852630A (en) * | 2014-02-18 | 2015-08-19 | 林英楠 | Controllable magnetic-circuit permanent magnet power device |
| CN112204860A (en) * | 2018-05-31 | 2021-01-08 | 日本电产株式会社 | Motor |
| CN110994821A (en) * | 2019-12-31 | 2020-04-10 | 郑州轻工业大学 | Magnetic flux modulation stator structure using axial sectional type hysteresis loop |
| CN111049288A (en) * | 2019-12-31 | 2020-04-21 | 郑州轻工业大学 | Surrounding type winding magnetic flux modulation stator structure |
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