CN101958623B - Permanent magnet rotating motor with high torque density, high power density and low disturbance - Google Patents
Permanent magnet rotating motor with high torque density, high power density and low disturbance Download PDFInfo
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- CN101958623B CN101958623B CN 201010199622 CN201010199622A CN101958623B CN 101958623 B CN101958623 B CN 101958623B CN 201010199622 CN201010199622 CN 201010199622 CN 201010199622 A CN201010199622 A CN 201010199622A CN 101958623 B CN101958623 B CN 101958623B
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Abstract
The invention aims at providing a novel topological structure of a motor, which generally has the structural characteristics of a radial motor and an axial motor, not only utilizes the electromagnetic space inside the motor to maximum extent, eliminates the bottleneck of the radial motor and realizes the high torque density and the high power density of the rotating motor, but also can provide more space for controlling the motor, so that the disturbance on the torque of the motor is reduced to minimum extent. The technical scheme of the invention is that permanent magnetic steel of the motor is sequentially extended along the circumferential line and is arrayed in a V shape, that is to say, two pairs of V-shaped homopolar permanent steel are arrayed along the circumferential line and adjacent pairs of magnetic steel have opposite polarities; two pairs of homolar permanent magnetic steel groups are arranged in the axial direction, that is to say, at the upper part and the lower part of a rotating shaft; and two pairs of magnetic steel have opposite polarity to the above pairs of homopolar V-shaped permanent steel. A corresponding coil winding pair group is respectively arranged opposite to two pairs of V-shaped magnetic steel.
Description
Technical field
The present invention relates to technical field of motors.
Background technology
Radial motor commonly used, the direction that just refers to the magnetic field in the air gap is radially.Here said magnetic field for magneto, refers to the magnetic field that magnetic field that permanent magnet excites and coil windings excite when machine operation.For conventional radial motor, the direction that these two magnetic are vowed is radially substantially in the gap.The axial direction electric machine corresponding with radial motor is called again disc type electric machine, and the magnetic direction in its air gap then is in substantially parallel relationship to the rotating shaft [1] of motor.Here said magnetic field, for permanent magnetic brushless, the magnetic field that excites when also referring to magnetic field that permanent magnet excites and the work of stator coil winding.For the axial direction electric machine of routine, or pan of a steelyard formula motor, these two magnetic field directions in the gap all are parallel to rotating shaft.A kind of cross motor [2] is arranged in addition.The magnetic field that magnetic field that its permanent magnet produces and winding produce is in orthogonal plane separately.Wherein, the magnetic field that permanent magnet produces is radially in air gap, and the magnetic field that coil windings produces in air gap then is axial.Adopt the radial rotary motor permanent magnetic steel of magnet structure to arrange also normally to press cylinder magnet steel centered by the rotating shaft outside to the center, or magnet steel is in the arrangement at interior dorsad center.Magnet steel sticks on the ferromagnetic material usually, in order to form the favourable magnetic rotation road of leading when machine operation.And coil windings in order to strengthen magnetic density, adopts ferromagnetic material such as silicon steel sheet to form the winding core usually, and coil is usually by the order layering to the center is wound on the silicon steel sheet core from the edge.
Although conventional radial rotary motor is still the main product of permanent magnetic brushless at present, the inherent limitation of its existing structure but becomes the yoke that improves power of motor density and turning moment density.At modern industrial society's demand high power density and high torque density to reduce the volume and weight of motor, do not arrange under the deceleration system situation that causes noise, reduction electric efficiency, the structure weakness of conventional radial permanent magnet electric rotating machine is showed nothing left day by day significantly, and is finalized in the literature.
Along with the application of new material, the new invention of manufacturing technology and the improvement of cooling technology, the power density (power output of unit mass or unit volume) that further improves motor becomes possibility.For the radial motor of routine, there is its inherent limitation in this raising, this be because: the path is in the bottleneck characteristics of the root of rotor thread form; The rotor core of quite most of rotor yoke side face is difficult to be used to as magnetic circuit; First from the stator winding to the stator core and then to the thermophoresis of supporting structure---under the situation of forcing cooling to arrange, by the stator air gap, the heat radiation of rotor and axle is very poor.
Summary of the invention
The objective of the invention is to propose a kind of new motor and open up the benefit structure, its general type has the design feature of radial motor and axial direction electric machine concurrently, can farthest utilize the electromagnetic space of motor internal, eliminate the bottleneck of radial motor, realize high torque density and the high power density of electric rotating machine, again can be simultaneously for the control of motor provides more space, make the torque disturbance of motor be kept to minimum; The solution of the present invention is:
The permanent-magnet steel of this motor launches and adopts double V-shaped arrangement in the arrangement in space successively along contour, namely adopts two a pair of V-type same polarity permanent-magnet steels to arrange along contour; But contour phase adjacency pair magnet steel polarity is different.
Radially, corresponding with it, at the inner face of this double V-shaped magnet steel, other has two a pair of V-type same polarity magnet steel along the contour permutation group, in rotor situation outside, adopts facing type, in interior situation, adopts back-to-back formula at rotor.
Axially, namely rotating shaft upper and lower arranges two a pair of same polarity V-type permanent-magnet steel groups, and its logarithm is identical with top logarithm, and its polarity is opposite with the polarity of top a pair of same polarity V-type permanent-magnet steel.
On the opposite of stating above-mentioned two pairs of V-type steel, corresponding coil windings is set respectively, winding generation polarity of the magnetic field is opposite up and down.
Up and down magnet steel group and adjacent winding group are formed an independently electromagnetic action unit along what contour was arranged; Each independently can select different teeth groove numbers in the unit, different V word magnet steel logarithm and the different electric numbers of phases.
Described a pair of V-type permanent-magnet steel and another position to the setting of V-type permanent-magnet steel are back-to-back, or aspectant.
Position between described V-type permanent-magnet steel and the coil windings, be the V-type permanent-magnet steel outside, coil windings is interior; Or the V-type permanent-magnet steel is interior, and coil windings outside.
The both sides angle of the V word of described V-arrangement magnet steel, and the both sides length of side of V word is variable, under the special clear condition, a limit of V word is zero, permanent-magnet steel becomes one flat plate.
Beneficial functional of the present invention is, the present invention is based on conventional radial motor and cross motor electromagnetism are opened up the further investigation of mending structure and the novel benefit structure of opening up that proposes.It has adopted two V-arrangement magnet steel to arrange, the benzvalene form coil windings and vertically the electromagnetism of radially layered open up the benefit structure, solved the basic weakness of conventional radial motor, the electromagnetic space of motor is fully utilized, increase torque density and the power density of motor, and provide more sufficient condition for the torque disturbance that reduces motor.Because the motor of this kind structure can adopt radial motor technological accumulation for many years under a lot of situations, it will be an important directions of high-end motor development from now on.
Description of drawings
Accompanying drawing 1 be two pairs of V-type magnet steel of the present invention outside, coil windings is at interior arrangement architecture figure.
Accompanying drawing 2 is arrangement architecture figure behind the relative half-twist of each magnet steel in two pairs of V-type magnet steel of the present invention.
Accompanying drawing 5, the 6th, two pairs of V-type magnet steel of the present invention be interior, coil windings arrangement architecture figure outside.
Accompanying drawing 7 is to adopt to open up to mend structure 30 grooves the structure chart that radially two layers of circumferential 13 pairs of V-arrangement magnet steel, axial one deck magnet steel are arranged.
Accompanying drawing 8 is that accompanying drawing 7 is wound with the local schematic diagram that amplifies of coil windings.
Accompanying drawing 9 is Fig. 7 radial magnet steel arrangement architecture enlarged drawings.
The simple Halbac of accompanying drawing 10 arrange the magnet steel rear magnetic direction figure that magnetizes.
11 sections elliptical shape magnet steel of accompanying drawing are arranged schematic diagram.
The number in the figure explanation
1-V type magnet steel; The 2-steel ring;
The 3-permeability magnetic material; 4-is every magnetic patch;
The 5-coil; The 6-outer steel;
Magnet steel in the 7-; The 8-iron core.
Embodiment
See also shown in the accompanying drawing 1,2,3,4,5,6, permanent-magnet steel launches and adopts double V-shaped arrangement in the arrangement in space successively along contour, namely adopts two a pair of V-type same polarity permanent-magnet steels 1 to arrange along contour;
Radially, corresponding with it, at the inner face of this double V-shaped magnet steel, other has two a pair of V-type same polarity magnet steel 1 along the contour permutation group, in rotor situation outside, adopts facing type (such as accompanying drawing 1), in interior situation, adopt back-to-back formula (such as accompanying drawing 5) at rotor.
Axially, namely rotating shaft upper and lower arranges two a pair of same polarity V-type permanent-magnet steel groups, and its logarithm is identical with top logarithm, and its polarity is opposite with the polarity of top a pair of same polarity V-type permanent-magnet steel.This axial magnet steel is arranged, and it is winding direction of winding or be clockwise or for counterclockwise up and down, must be identical and institute connect electric in the same way.
The described coil windings 5 of illustration is provided with magnetic conduction substance 3.
Described a pair of V-type permanent-magnet steel and another position to the setting of V-type permanent-magnet steel are back-to-back, shown in accompanying drawing 5,6; Or shown in aspectant 2,3,4.
Position between described V-type permanent-magnet steel and the coil windings, be the V-type permanent-magnet steel outside, coil windings is interior, shown in accompanying drawing 1,2,3,4; Or the V-type permanent-magnet steel is interior, coil windings outside, shown in accompanying drawing 5,6.
The both sides angle of the V word of described V-arrangement magnet steel, and the both sides length of side of V word is variable, under the special clear condition, a limit of V word is zero, permanent-magnet steel becomes one flat plate, as shown in Figure 6.
The present invention adopts following two kinds of permanent magnetic steels, and a kind of Halbach of being arranges (seeing Figure 10), and the motor that adopts this magnet steel to make also can be called the Halbach motor; Another kind of monomer magnet steel is to cut ellipse along the basic configuration of orientation, is about to oval two ends and clips.Noticing that this section oval magnet steel is actual provides a kind of general form, oval itself have that two variable descriptions, both sides clip what again can be different, therefore have the parameter of four independent variable to change and many different magnet steel shapes.Round magnet steel for example, the tile magnet steel, half-moon-shaped magnet steel can be regarded the special shape of this section oval magnet steel as.To cutting face that magnetizing of oval magnet steel adopt vertical developed surface magnetize (such as Figure 11).
Magnet steel launches and adopts double V-shaped arrangement in the arrangement in space successively along contour.We are with common cylinder electromagnetic space, magnet steel situation explanation outside, and such as Fig. 1 to Fig. 4, every a pair of V-type magnet steel is comprised of the magnet steel of same polarity, along cylindrical contour arrangement.But these V-type magnet steel of arranging along contour pair, adjacent polarity is different, can be I pair, and I is integer.Along the rotating shaft direction, namely go up per two pairs of V-arrangement magnet steel of lower shaft in addition, also have opposite polarity.The position of two pairs of V magnet steel is taked consistency from top to bottom or is had the low-angle deviation to allow up and down, but the adjacent uniformity of contour is most important to motor quality.
On the opposite of these V-arrangement magnet steel, the coil windings group is set.Magnet steel, coil windings and magnetic conduction substance consist of corresponding Ci rotation road.The number of coil windings should be the multiple of the electric number of phases that adopts.The 3 phase electronics feed systems that for example usually adopt, the coil number can be 3J, J is integer.The teeth groove of the applicable conventional radial motor of the selection of I and J cooperates to be optimized.Therefore schematic diagram 1 to Fig. 4 does not represent that every a pair of up and down V magnet steel namely has a pair of coil windings corresponding.Certainly our new construction also Shi Yong Yu rotation road without the situation of magnetic conduction substance.
The basic configuration that the V-type magnet steel is arranged has two kinds of formation, and a kind of is type back-to-back, and a kind of is face-to-face type, the back-to-back type that is shown in Figure 1, and shown in Figure 2 be face-to-face type.The shape of corresponding winding then has closing in container type and open containers type.Fig. 1 to Fig. 4 is that our new construction also comprises magnet steel and coil situation outside certainly take magnet steel situation outside as example.Fig. 5 is a kind of coil situation outside of corresponding diagram 1, and Fig. 6 then is a kind of special circumstances of corresponding diagram 3.
Fig. 1 opens up the benefit structure to electromagnetism shown in Figure 4, actual conventional radial motor and the mutual idea of distinguishing of conventional axial motor of having overturned.Even noticing V font magnet steel can change in 180 ° of scopes up and down at its middle handing-over line in the length of side and the constant situation of angle.And the described two kinds of citation forms of Fig. 1 and Fig. 2 also can be described as the result that this middle intersection moves.Special case shown in Figure 3 is the situation of complete radial motor, and situation shown in Figure 4 then is the situation of axial direction electric machine fully.
No matter note, be the angle of cut of V-type, or the length of side on the both sides of V-arrangement all can change.Can therefore develop out many variant planforms.Under the special case, one side V-arrangement is zero, the angle of cut be zero or 180 ° all make magnet steel become one.
The electromagnetic space of motor can be radially and axially is divided into the multilayer space, shown in Figure 7 is the simplest vertically a sheaf space and the electromagnetic space structure of two sheaf spaces radially, wire not yet around situation, corresponding to magnet steel situation outside.Under the very long elongate cylinder motor situation of axial length, it is feasible axially being divided into the multilayer space.Fig. 8 is the schematic diagram after Fig. 7 partly winds the line.
Notice that each radial and axial minute space is actually formed oneself one independently electromagnetic action pattern, i.e. a separated motor.Shown in Figure 7 is 2 separated motor patterns the simplest, and is the simplest special separated motor pattern, and namely inside and outside two motor teeth groove numbers equate to be 30 and the number of pole-pairs of magnet steel also equates, are 13 pairs of utmost points, and the electric number of phases is 3.And another advantage of the motor of our new construction exactly just is that motors different between ectonexine can adopt the different electric numbers of phases, teeth groove number and magnet steel number of pole-pairs.This just provides a more vast alternative parameter space for reducing torque disturbance.After teeth groove number, number of pole-pairs and the number of phases of meticulously selecting inside and outside separated motor, can make the disturbance of torque drop to minimum scope.This is that general conventional motor can't be equal to it.This high-tech applications at motor is very important.
The purpose of all diagrams is in order to show the new benefit structure of opening up.No matter be that magnet steel is arranged when practical application, coil shape etc. all need be done to optimize to strengthen magnetic field, reduce leakage field, and increase the winding space that can take full advantage of.
Claims (5)
1. a high torque density, high power density, low disturbance permanent magnet rotating machine, its feature exists
In:
The permanent-magnet steel of this motor launches and adopts two V type rows in the arrangement in space successively along contour
Row namely adopt two a pair of V type same polarity permanent-magnet steels to arrange along contour, but contour phase adjacency pair
Magnet steel polarity is different;
Radially, corresponding with the two V magnet steel that are arranged in order along contour, at the inner face of this pair V type magnet steel, other has two a pair of V-type same polarity magnet steel along the contour permutation group, in rotor situation outside, adopts facing type, at rotor
Adopt back-to-back formula in interior situation;
Axially, namely rotating shaft upper and lower arranges two a pair of same polarity V type permanent-magnet steel groups,
This V type permanent-magnet steel group logarithm is identical with top logarithm, and a pair of same polarity V-type permanent-magnet steel polarity below the rotating shaft is opposite with the polarity of top a pair of same polarity V type permanent-magnet steel;
On the above-mentioned axial up and down opposite of two pairs of V type magnet steel, corresponding coil windings is set respectively.
2. by the described high torque density of claim 1, high power density, low disturbance permanent magnetism rotation
Motor is characterized in that:
Up and down magnet steel group and adjacent winding group are formed an independently electromagnetism work along what contour was arranged
Use the unit; Each independently can select different teeth groove numbers in the unit, different V word magnet steel logarithms and
The different electric numbers of phases.
3. by the described high torque density of claim 1, high power density, low disturbance permanent magnetism rotation
Motor is characterized in that:
Described axial top a pair of V type permanent-magnet steel and axial another following position to the setting of V type permanent-magnet steel are back-to-back
, or aspectant.
4. by the described high torque density of claim 1, high power density, low disturbance permanent magnetism rotation
Motor is characterized in that:
Position between described V type permanent-magnet steel and the coil windings, be V type permanent-magnet steel outside,
Coil windings is interior; Or V type permanent-magnet steel is interior, and coil windings outside.
5. by the described high torque density of claim 1, high power density, low disturbance permanent magnetism rotation
Motor is characterized in that:
The both sides angle of the V word of described V shape magnet steel, and the both sides length of side of V word is variable,
In particular cases, a limit of V word is zero, and permanent-magnet steel becomes one flat plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010199622 CN101958623B (en) | 2010-06-13 | 2010-06-13 | Permanent magnet rotating motor with high torque density, high power density and low disturbance |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010199622 CN101958623B (en) | 2010-06-13 | 2010-06-13 | Permanent magnet rotating motor with high torque density, high power density and low disturbance |
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| Publication Number | Publication Date |
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| CN101958623A CN101958623A (en) | 2011-01-26 |
| CN101958623B true CN101958623B (en) | 2013-01-30 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104299749B (en) * | 2014-10-24 | 2016-08-24 | 广东电网有限责任公司东莞供电局 | A kind of V-arrangement permanent magnet device producing static gradient magnetic field |
| CN104716754A (en) * | 2015-02-16 | 2015-06-17 | 武汉华大新型电机科技股份有限公司 | Method for improving motor torque density and radial and axial magnetic flux parallel-connected permanent magnet motor |
| WO2019094982A1 (en) * | 2017-11-13 | 2019-05-16 | Starrotor Corporation | Induction motor |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1949628A (en) * | 2006-11-01 | 2007-04-18 | 宁波骏腾国际工贸有限公司 | Magnetic concentrated low wave permanent magnetic brushless wheel electric machine |
| CN101110528A (en) * | 2006-07-20 | 2008-01-23 | 株式会社日立产机系统 | Permanent magnet type electric rotary machine and compressor using the same |
| CN101272066A (en) * | 2007-03-20 | 2008-09-24 | 株式会社安川电机 | Permanent magnet type synchronous rotation motor rotor and rotation motor |
| CN101662197A (en) * | 2009-09-17 | 2010-03-03 | 苏州工业园区美能新能源有限公司 | Compound excitation permanent magnet synchronous generator for electric vehicles |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2316103C2 (en) * | 2005-07-14 | 2008-01-27 | "Центр Разработки Нефтедобывающего Оборудования" ("Црно") | Magnetic system of rotor |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101110528A (en) * | 2006-07-20 | 2008-01-23 | 株式会社日立产机系统 | Permanent magnet type electric rotary machine and compressor using the same |
| CN1949628A (en) * | 2006-11-01 | 2007-04-18 | 宁波骏腾国际工贸有限公司 | Magnetic concentrated low wave permanent magnetic brushless wheel electric machine |
| CN101272066A (en) * | 2007-03-20 | 2008-09-24 | 株式会社安川电机 | Permanent magnet type synchronous rotation motor rotor and rotation motor |
| CN101662197A (en) * | 2009-09-17 | 2010-03-03 | 苏州工业园区美能新能源有限公司 | Compound excitation permanent magnet synchronous generator for electric vehicles |
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