CN104124847B - A kind of momenttum wheel based on moving-coil motor - Google Patents
A kind of momenttum wheel based on moving-coil motor Download PDFInfo
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- CN104124847B CN104124847B CN201410356329.1A CN201410356329A CN104124847B CN 104124847 B CN104124847 B CN 104124847B CN 201410356329 A CN201410356329 A CN 201410356329A CN 104124847 B CN104124847 B CN 104124847B
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Abstract
A kind of momenttum wheel based on moving-coil motor, the center support intercolumniation of outer casing upper cover and outer casing base forms cavity, rotating shaft inner ring is fixed on the outer border of cavity inside and outside shell base central support posts, in cavity, on the outer ring of rotating shaft, be fixed with the rotor core of coiling, rotor core and coil form the rotor portion of momenttum wheel, in top and the bottom of rotor core and coil, on the inwall of outer casing upper cover and outer casing base, the stationary part of fixed electrical machinery is permanent magnet respectively, its magnetizing direction is above-below direction, in cavity between rotor core and outer casing base, place slip ring, momenttum wheel of the present invention is in operation, input single-phase DC voltage, and in coil, electric current operation fluctuation is very little, because the relative position of rotor and stator does not affect magnetic circuit, therefore do not need to measure in real time the additional circuit of rotor-position, reduce the complexity of circuit, because stator adopts monoblock permanent magnet, the magnetic field intensity in space, coil place is higher, and larger torque still can be provided in the situation that electric current is less.
Description
Technical field
The present invention relates to momenttum wheel technical field, be specifically related to a kind of momenttum wheel based on moving-coil motor.
Background technology
Existing momenttum wheel mainly adopts brshless DC motor as power source, these direct current generator operation principlesFor: stator is coil winding iron core, and coil is three-phase canoe, passes into three-phase dc electricity, straightStream electrical waveform is square wave, and between three-phase, phase place respectively differs 120 degree. When work, pass into electric current, at coilAnd between the air gap of rotor permanent magnet, produce the magnetic field of rotation, drive permanent magnet rotating. It is as momenttum wheelShortcoming: need to measure in when operation the position of rotor, thereby adjust motor input current waveform andPhase place, therefore needs complicated driver circuit; Due to electric current commutation, operation fluctuation is larger, especially lowThe lower performance of speed operation is bad; Torque when actual motion is also little, can not be applied to torque request higherSituation.
And for the momenttum wheel of another kind of structure based on disc type electric machine: the operation principle of disc type electric machine and brushless straightThe operation principle of stream motor is identical, and stator coil and mover magnet are all made as to plate-like, and the magnetic circuit of motor isAxially, therefore also referred to as brushless direct current motor with axial magnetic circuit. This motor is also three-phase square wave due to what adoptElectric current therefore also need to be measured the position of rotor in the time that motor moves, and increases the complexity of circuit for controlling motor;Also there is the problem of operation fluctuation simultaneously.
Summary of the invention
The problem existing in order to solve above-mentioned prior art, the object of the present invention is to provide a kind of based on moving-coilThe momenttum wheel of motor; Momenttum wheel, in running, is input as single-phase DC voltage, and in coil, electric current comparativelyStable, operation fluctuation is very little; Because the relative position of momenttum wheel rotor and stator does not affect magnetic circuit, therefore notNeed to measure in real time the additional circuit of rotor-position, reduce the complexity of circuit; Because momenttum wheel stator adoptsMonoblock Nd-Fe-B permanent magnet, therefore the magnetic field intensity in space, coil place is higher, in the situation that electric current is lessLarger torque still can be provided.
For reaching above object, the present invention adopts following technical scheme:
Based on a momenttum wheel for moving-coil motor, comprise outer casing base 4, be fixed on outer casing base 4 outsideShell upper cover 1, described outer casing upper cover 1 forms cavity with the center support intercolumniation of outer casing base 4, in rotating shaft 7Circle is fixed on the outer border of cavity inside and outside shell base 4 central support posts, in cavity on the outer ring of rotating shaft 7Be fixed with rotor core 5, coiling 2 on rotor core 5, rotor core 5 is moving with the common formation of coil 2The rotor portion of amount wheel, the top of described rotor core 5 and coil 2 and bottom, outer casing upper cover 1 and outsideOn the inwall of shell base 4, the stationary part of fixed electrical machinery is permanent magnet 3 respectively, and its magnetizing direction is above-below direction,And it is that permanent magnet above 3 is downwards the N utmost point or the S utmost point that the magnetizing direction of two permanent magnets closes, belowPermanent magnet 3 is upwards the N utmost point S utmost point, in the cavity between rotor core 5 and outer casing base 4, places slip ring 6.
Described rotor core 5 adopts silicon steel sheet to be pressed into, and it is shaped as double-deck annular, the upper coiling of outer shroud 5-1Coil 2, interior ring 5-2 and rotating shaft 7 are connected, between interior ring 5-2 and outer shroud 5-1 by the company of four position symmetriesMuscle 5-3 is connected.
The bearing of described rotating shaft 7 adopts angle bearing, is hollow ring, and prop up at the center of being fixed on outer casing base 4On the step of dagger.
The material of described outer casing upper cover 1 and outer casing base 4 is No. 45 steel.
The material of described permanent magnet 3 is neodymium iron boron.
Described permanent magnet 3 adopts epoxy material to stick on respectively on the inwall of outer casing upper cover 1 and outer casing base 4.
Compared to the prior art, advantage of the present invention is as follows:
1, due to the structural design of momenttum wheel, rotor be coil winding on annulated column shape iron core, and stator is foreverMagnet lays respectively at the upper and lower of rotor, and therefore the magnetic circuit of momenttum wheel is simple. Magnetic circuit goes out from the N utmost point of permanent magnetSend out, by the coil of rotor one side, enter iron core, then by rotating shaft, outer casing base and upper cover are got back to foreverThe S utmost point of magnet.
2, because the stator of momenttum wheel is a pair of complete permanent magnet, therefore the magnetic field of rotor coil part comparativelyEvenly, the electric current passing through in the Ampere force of generation and coil is linear, and therefore the controllability of momenttum wheelBy force. And motor stator is monoblock permanent magnet, rotor is symmetrical iron-core coil, therefore the feelings of momenttum wheel operationCondition is not subject to the position influence of rotor, does not need the control circuit of complicated real-time measurement rotor-position.
3, due to momenttum wheel be input as single-phase DC voltage, the electric current in coil is compared with more steady in three-phase situationFixed, momenttum wheel operation fluctuation is little, and in low speed situation, operation is also stable.
It is 4, because momenttum wheel stator adopts overall permanent magnet, larger in the electromagnetic field intensity at rotor coil place,Easily produce larger Ampere force, therefore higher turning can still can be provided under lower input voltageSquare.
5, because momenttum wheel rotor is coiling on iron core, therefore can increase according to actual needs easilyAdd or reduce coil turn, thereby changing the performance of momenttum wheel.
Brief description of the drawings
Fig. 1 is the momenttum wheel generalized section that the present invention is based on moving-coil motor.
Fig. 2 is the structural representation of rotor core of the present invention.
Detailed description of the invention
Below in conjunction with Fig. 1, Fig. 2 and specific embodiment, the present invention is described in further detail.
As shown in Figure 1, a kind of momenttum wheel based on moving-coil motor of the present invention, comprises outer casing base 4, fixingOuter casing upper cover 1 on outer casing base 4, the center support intercolumniation shape of described outer casing upper cover 1 and outer casing base 4Become cavity, the inner ring of rotating shaft 7 is fixed on the outer border of cavity inside and outside shell base 4 central support posts, at skyIn chamber, on the outer ring of rotating shaft 7, be fixed with rotor core 5, coiling 2 on rotor core 5, rotor core 5With the common rotor portion that forms momenttum wheel of coil 2, the top of described rotor core 5 and coil 2 with underOn the inwall of portion, outer casing upper cover 1 and outer casing base 4, the stationary part of fixed electrical machinery is permanent magnet 3 respectively, itsMagnetizing direction is above-below direction, and the magnetizing direction of two permanent magnets pass is the downward N of being of permanent magnet 3 aboveThe utmost point or the S utmost point, permanent magnet 3 is below upwards the N utmost point S utmost point. Because the rotor of momenttum wheel is coil, needWant slip ring to provide electric power for coil, in the cavity between rotor core 5 and outer casing base 4, place slip ring 6.
As the preferred embodiment of the present invention, described rotor core 5 adopts silicon steel sheet to be pressed into, its shapeFor double-deck annular, the upper coiling 2 of outer shroud 5-1, interior ring 5-2 and rotating shaft 7 are connected, interior ring 5-2 and outer shroudBetween 5-1, be connected by the muscle 5-3 of company of four position symmetries.
As the preferred embodiment of the present invention, the bearing of described rotating shaft 7 adopts angle bearing, is hollow ring,Be fixed on the step of central support posts of outer casing base 4.
As the preferred embodiment of the present invention, the material of described outer casing upper cover 1 and outer casing base 4 is No. 45Steel.
As the preferred embodiment of the present invention, the material of described permanent magnet 3 is neodymium iron boron.
As the preferred embodiment of the present invention, described permanent magnet 3 adopts epoxy material to stick on respectively shellOn the inwall of upper cover 1 and outer casing base 4.
Operation principle of the present invention is:
Because momenttum wheel adopts up-down structure, upper and lower two-layer stator is Nd-Fe-B permanent magnet, and middle one deck is paintThe rotor that envelope curve coiling iron core forms, and permanent magnet is annulated column shape, even in the magnetic field at rotor coil place, because ofThis is for momenttum wheel, and the size of current of passing through in the torque of its operation and coil is linear, thereforeThe operation control of momenttum wheel is comparatively simple.
When momenttum wheel starts, load a starting resistor, now coil 2 by slip ring 6 to coil 2 two endsIn by an electric current, and coil 2 is in the middle of the magnetic field that stator permanent magnet 3 produces, and therefore produces amperePower, the direction of power is tangential direction, because coil 2 is wound on rotor core 5, therefore drives wholeRotor rotates, and momenttum wheel brings into operation.
After momenttum wheel brings into operation, can, according to the performance requirement of torque, rotating speed etc. for momenttum wheel, pass throughAdditional control circuit changes the input voltage in input slip ring, thus the size of current in regulating rotary subcoil,The running status that changes momenttum wheel with this, meets our requirement to momenttum wheel.
Claims (6)
1. the momenttum wheel based on moving-coil motor, is characterized in that: comprise outer casing base (4), be fixed onOuter casing upper cover (1) on outer casing base (4), the center of described outer casing upper cover (1) and outer casing base (4)Between support column, form cavity, the inner ring of rotating shaft (7) is fixed on cavity inside and outside shell base (4) central support postsOuter border on, on the outer ring of rotating shaft in cavity (7), be fixed with rotor core (5), rotor core (5)Upper coiling (2), rotor core (5) and coil (2) form the rotor portion of momenttum wheel jointly,The top of described rotor core (5) and coil (2) and bottom and outer casing upper cover (1) and outer casing base (4)Inwall on respectively the stationary part of fixed electrical machinery be permanent magnet (3), its magnetizing direction is above-below direction, andThe magnetizing direction of two permanent magnets closes is that permanent magnet (3) is above downwards the N utmost point or the S utmost point, belowPermanent magnet (3) is upwards the N utmost point or the S utmost point, the cavity between rotor core (5) and outer casing base (4)Middle placement slip ring (6).
2. a kind of momenttum wheel based on moving-coil motor according to claim 1, is characterized in that: described inRotor core (5) adopts silicon steel sheet to be pressed into, and it is shaped as double-deck annular, the upper coiling line of outer shroud (5-1)Circle (2), interior ring (5-2) and rotating shaft (7) are connected, between interior ring (5-2) and outer shroud (5-1) by fourCompany's muscle (5-3) of individual position symmetry is connected.
3. a kind of momenttum wheel based on moving-coil motor according to claim 1, is characterized in that: described inThe bearing of rotating shaft (7) adopts angle bearing, is hollow ring, is fixed on the center support of outer casing base (4)On the step of post.
4. a kind of momenttum wheel based on moving-coil motor according to claim 1, is characterized in that: described inThe material of outer casing upper cover (1) and outer casing base (4) is No. 45 steel.
5. a kind of momenttum wheel based on moving-coil motor according to claim 1, is characterized in that: described inThe material of permanent magnet (3) is neodymium iron boron.
6. a kind of momenttum wheel based on moving-coil motor according to claim 1, is characterized in that: described inPermanent magnet (3) adopts epoxy material to stick on respectively on the inwall of outer casing upper cover (1) and outer casing base (4).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410356329.1A CN104124847B (en) | 2014-07-24 | 2014-07-24 | A kind of momenttum wheel based on moving-coil motor |
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| CN201410356329.1A CN104124847B (en) | 2014-07-24 | 2014-07-24 | A kind of momenttum wheel based on moving-coil motor |
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| CN104124847B true CN104124847B (en) | 2016-05-04 |
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| CN106872991A (en) * | 2017-01-17 | 2017-06-20 | 西安交通大学 | Scanning laser active probe device and implementation method based on annular external rotor electric machine |
| CN106842221A (en) * | 2017-03-16 | 2017-06-13 | 西安交通大学 | A kind of multi-thread 360 ° of scanning type laser radars and its implementation |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US4593798A (en) * | 1983-05-02 | 1986-06-10 | Canadian Fram Limited | Idle restart clutching system |
| NZ221822A (en) * | 1987-09-15 | 1990-02-26 | Clark Automotive Dev | Permanent magnet motor |
| CN2239676Y (en) * | 1995-11-03 | 1996-11-06 | 常州经济技术开发区金达利服装公司 | High effective disk-like permanent-magnet d.c motor |
| CN101295906A (en) * | 2008-04-28 | 2008-10-29 | 刘盛荣 | Side sensing type permanent magnetic DC motor |
| CN103580323A (en) * | 2012-07-31 | 2014-02-12 | 成都联腾动力控制技术有限公司 | Rotor improvement structure of wide-range-timing permanent magnet synchronous motor |
| JP2014138495A (en) * | 2013-01-17 | 2014-07-28 | Denso Corp | Stator of axial gap type rotary electric machine, manufacturing method of the same, axial gap type rotary electric machine, and wheel |
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