CN104917309A - Stator, and brushless direct current motor, three-phase switch reluctance motor and shaded pole motor provided with stator - Google Patents
Stator, and brushless direct current motor, three-phase switch reluctance motor and shaded pole motor provided with stator Download PDFInfo
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- CN104917309A CN104917309A CN201510358678.1A CN201510358678A CN104917309A CN 104917309 A CN104917309 A CN 104917309A CN 201510358678 A CN201510358678 A CN 201510358678A CN 104917309 A CN104917309 A CN 104917309A
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Abstract
The invention discloses a stator, and relates to the field of motors. The stator comprises large teeth and small teeth, wherein the large teeth and the small teeth are periodically and alternately arranged; distances of arcs between tooth body center lines of the adjacent large teeth and small teeth are same; a plurality of tooth grooves are formed between the large teeth and the small teeth; tooth crest arc surfaces of the large teeth change according to a sine rule; large tooth arc surface air gaps between the large teeth and a rotor are gradual sine air gaps with small middles and large two ends; small tooth arc surface air gaps between the small teeth and the rotor are uniform air gaps and greater than air gaps of the two ends of the large teeth; coils are embedded into the tooth grooves to allow iron cores of phase windings to be sequentially arranged by the small teeth, the large teeth and the small teeth; the shared small teeth are arranged between the phase windings and adjacent windings; and pole arc surface air gaps of the phase windings are distributed similar to a sine rule. The stator can generate a circular rotating field, so that pulsation of a motor is reduced, and stable start of the motor is ensured.
Description
Technical field
The present invention relates to machine field, particularly relate to a kind of stator and corresponding brshless DC motor, three-phase switch reluctance machine and motor with cup rotor.
Background technology
Impartial groove and tooth is dispersed with respectively in existing motor stator core circle, and in teeth groove, be wound with three-phase or two-phase winding, harmonic magnetic potential can be produced in the running for this traditional motor, cause motor to pulse obviously, electric machine designer tries hard to harmonic carcellation magnetic potential to be used as important content to design when designing motor.The technology main manifestations of current harmonic carcellation magnetic potential is stator, rotor windings: comprise on single, double stacked winding, concentric distributed winding, the distributed winding of fractional-slot or rotor core shape is sinusoidal, and object makes air gap electromotive force ripple be sinusoidal.Although eliminate a certain amount of harmonic magnetic potential when adopting the distributed winding of above-mentioned correspondence, but also bring that groove tooth is more, slot ripples amount increases, wire winding is complicated, end winding is longer, magnetic flux leakage increases and the problem such as resistance reactance increase, produces on electric efficiency, power, torque the impact declined.And micromachine implement distributed winding technical scheme time often operate more difficult.Here it is, and micromachine power factor (PF) puies forward not high reason.
Summary of the invention
The invention provides a kind of stator, described stator is by changing its stator core shape, pole span is shortened and an extremely total magnetic is close constant, three tooth polar arc face air gaps are in the shape that distributes similar in appearance to sinusoidal rule, thus produce circular rotating field when motor runs, reduce the pulsation phenomenon of motor, make electric motor starting steady.
For reaching this object, the present invention by the following technical solutions:
The invention discloses a kind of stator, comprise canine tooth and little tooth, described canine tooth and described little tooth rim phase are alternately arranged, circular arc between adjacent canine tooth tooth body center line with little tooth tooth body center line is apart from identical, some teeth groove associations are between canine tooth and little tooth, in described teeth groove, be embedded with coil makes the iron core of every phase winding of formation respectively by little tooth, canine tooth, little tooth three tooth is arranged in order composition, every phase winding is adjacent a shared little tooth between winding, the tooth top cambered surface of canine tooth is by sinusoidal rule change, canine tooth cambered surface air gap between canine tooth and rotor is middle little, the sinusoidal gradual change air gap that two ends are large, little sector face air gap between described little tooth and rotor is even air gap and is greater than the two ends air gap of canine tooth cambered surface air gap, the polar arc face air gap of every phase winding is in the shape that distributes similar in appearance to sinusoidal rule.
The invention discloses a kind of stator, comprise canine tooth and little tooth, described canine tooth and described little tooth rim phase are alternately arranged, circular arc between adjacent canine tooth tooth body center line with little tooth tooth body center line is apart from identical, some teeth groove associations are between canine tooth and little tooth, in described teeth groove, be embedded with coil makes the iron core of every phase winding of formation respectively by little tooth, canine tooth, little tooth three tooth is arranged in order composition, every phase winding is adjacent a shared little tooth between winding, the tooth top cambered surface of canine tooth is symmetrical top rake, canine tooth cambered surface air gap between canine tooth and rotor is middle little, the gradual change air gap that two ends are large, little sector face air gap between little tooth and rotor is even air gap and is greater than the two ends air gap of canine tooth cambered surface air gap, the polar arc face air gap of every phase winding is in the shape that distributes similar in appearance to sinusoidal rule.
The invention discloses a kind of stator, comprise canine tooth and little tooth, described canine tooth and described little tooth rim phase are alternately arranged, circular arc between adjacent canine tooth tooth body center line with little tooth tooth body center line is apart from identical, some teeth groove associations are between canine tooth and little tooth, in described teeth groove, be embedded with coil makes the iron core of every phase winding of formation respectively by little tooth, canine tooth, little tooth three tooth is arranged in order composition, every phase winding is adjacent a shared little tooth between winding, canine tooth cambered surface air gap between described canine tooth and rotor is even air gap, little sector face air gap between little tooth and rotor is even air gap and is greater than canine tooth cambered surface air gap, the polar arc face air gap of every phase winding is in the shape that distributes similar in appearance to sinusoidal rule.
The invention discloses a kind of stator, comprise canine tooth and little tooth, described canine tooth and described little tooth rim phase are alternately arranged, circular arc between adjacent canine tooth tooth body center line with little tooth tooth body center line is apart from identical, some teeth groove associations are between canine tooth and little tooth, in described teeth groove, be embedded with coil makes the iron core of every phase winding of formation respectively by little tooth, canine tooth, little tooth three tooth is arranged in order composition, every phase winding is adjacent a shared little tooth between winding, little sector face air gap between described little tooth and rotor and the canine tooth cambered surface air gap between canine tooth and rotor are even air gap, and canine tooth cambered surface air gap is identical with little sector face air gap, can produce similar in appearance to square wave field after coil electricity.
Further technical scheme is, the canine tooth tooth body root of four kinds of stators described above and the yoke portion of bordering on all can split assembled, and described canine tooth tooth body root is male dovetail tooth and yoke internal side diameter be female dovetail groove is that convex-concave swallow-tail form teeth groove closely splices; The tooth top arc length of described little tooth tooth body is greater than tooth root arc length, is similar in appearance to stepped tooth; Described stator processing program is that the rear male dovetail tooth canine tooth tooth body root is set in yoke internal side diameter female dovetail groove by first for electromagnetic wire coiling on the little tooth in left and right.
Further technical scheme is, described canine tooth tooth body width is more than two times or two times of described little tooth tooth body width.
The invention also discloses a kind of brshless DC motor with above-mentioned arbitrary described stator, also comprise rotor and electronics commutation device, described rotor is provided with some N/S rotor permanent magnetic poles to parallel magnetization or radial magnetizing; Described commutation device comprises hall position sensor and rotor-position permanent magnet poles, and described rotor-position permanent magnet poles is covered with by the arrangement of N/S pole alternate intervals or interval is covered with in rotating shaft and it is coaxial with rotor permanent magnetic pole and number of pole-pairs is identical.
Further technical scheme is, the teeth groove of described stator and described rotor permanent magnetic pole are oblique and in cross shaped head, the teeth groove of stator is equal with the gradient of rotor permanent magnetic pole.
Further technical scheme is, described brshless DC motor is two phase brushless DC motors, described stator comprises A phase winding and B phase winding, described A phase winding and described B phase winding spatially 90 ° of electrical degrees each other, wherein, every phase winding number of poles is identical with rotor permanent magnetic pole number of poles, and namely the number of described teeth groove is four times of rotor permanent magnetic pole number of poles, and a pole pole span of rotor permanent magnetic pole is (0.65-1.0) π D/P.
Further technical scheme is, the hall position sensor of described two phase brushless DC motors is separately positioned on the A phase winding core magnetic pole of 90 ° of electrical degrees and B phase winding core magnetic pole shaft centre line side each other, locus; Described rotor permanent magnetic pole and rotor-position permanent magnet poles 0 ° of electrical degree each other on locus, described rotor permanent magnetic pole doubles as rotor-position permanent magnet poles.
Further technical scheme is, described brshless DC motor is three-phase brushless dc motor, described stator is for comprising A phase winding, B phase winding and C phase winding, described A phase winding, described B phase winding and described C phase winding spatially 120 ° of electrical degrees each other, wherein, every phase winding number of poles is 1/2 of rotor permanent magnetic pole number of poles, and namely the number of described teeth groove is three times of rotor permanent magnetic pole number of poles, and a pole pole span of rotor permanent magnetic pole is (0.8-1.0) π D/P.
Further technical scheme is, described rotor-position permanent magnet poles and rotor permanent magnetic pole 90 ° of electrical degrees each other on locus, described hall position sensor be three-phase and on locus 120 ° of electrical degrees each other, be separately positioned on A phase winding, B phase winding and C phase winding neutral line place.
The invention also discloses a kind of three-phase switch reluctance machine with above-mentioned arbitrary described stator, also comprise rotor and electronics commutation device, described rotor is provided with some to salient pole iron core, and described commutation device comprises hall position sensor and rotor-position permanent magnet poles; Described stator is for comprising A phase winding, B phase winding and C phase winding, described A phase winding, described B phase winding and described C phase winding spatially 120 ° of electrical degrees each other, wherein, every phase winding number of poles is identical with rotor with salient pole iron core number of poles, namely the number of described teeth groove is six times of rotor with salient pole iron core number of poles, and a pole pole span of rotor with salient pole iron core is (0.38-0.42) π D/P.
Further technical scheme is, the teeth groove of described stator and described rotor with salient pole iron core are oblique and in cross shaped head, the teeth groove of stator is equal with the gradient of rotor with salient pole iron core.
Further technical scheme is, described rotor-position permanent magnet poles with rotor with salient pole iron core is coaxial and number of pole-pairs is identical, described rotor-position permanent magnet poles one pole pole span be equal to or less than rotor permanent magnetic pole one pole pole span and on locus 0 ° of electrical degree each other.
Further technical scheme is, described hall position sensor be three-phase and on locus 120 ° of electrical degrees each other, be separately positioned on A phase winding, B phase winding and C phase winding neutral line place.
The invention also discloses a kind of motor with cup rotor with above-mentioned arbitrary described stator, also comprise rotor and magnetic guiding loop, described magnetic guiding loop comprises conductive magnetic yoke and lower conductive magnetic yoke, described upper conductive magnetic yoke and described lower conductive magnetic yoke gapless close fit, described magnetic guiding loop is symmetricly set in described stator circumference, and the number of described magnetic guiding loop and described stator poles ratio are 1 ︰ 1.
Further technical scheme is, described stator comprises described A phase winding and described B phase winding, the spatially 90 ° of electrical degrees each other of B phase winding described in described A phase winding; When described A phase winding is main winding, described B phase winding is auxiliary winding; When described B phase winding is main winding, described A phase winding is auxiliary winding; Described main winding is multiturn coil, and described secondary coil is single turn short-circuited coil or multiturn short-circuited coil.
Further technical scheme is, described upper conductive magnetic yoke is located at described stator core both ends or one end and is integrated with stator pressing, described upper conductive magnetic yoke is pressed on A phase canine tooth and B phase canine tooth position, and with lower conductive magnetic yoke in surrounding adjacent described A phase winding coil one effective edge and described B phase winding coil one effective edge similar in appearance to " returning " font, that is: groove be embedded with described A phase winding coil and described B phase winding coil respectively wherein.
Further technical scheme is, a kind of brshless DC motor with above-mentioned arbitrary described stator is arbitrary two-phase, three-phase brushless DC linear electric motor.
Further technical scheme is, a kind of three-phase switch reluctance machine with above-mentioned arbitrary described stator is arbitrary threephase switch magnetic resistance linear electric motors.
Further technical scheme is, a kind of brshless DC motor with above-mentioned arbitrary described stator is arbitrary two-phase, three-phase brushless DC-disc type motor.
Further technical scheme is, a kind of three-phase switch reluctance machine with above-mentioned arbitrary described stator is arbitrary threephase switch magnetic resistance disc type electric machine.
Beneficial effect of the present invention is:
1, the canine tooth of described stator of the present invention and little tooth are alternately arranged, every phase winding core magnetic pole respectively by canine tooth to be main, the little tooth in left and right be auxiliary three gear mutation form and three tooth polar arc face air gaps in the shape that distributes similar in appearance to sinusoidal rule, the coil after being energized is made to produce circular rotating field, phase and phase homopolar field merges the pulsation phenomenon that handing-over reduces motor, makes electric motor starting steady.
2, the width of described canine tooth tooth body is that more than the twice of little tooth tooth body width or twice described canine tooth tooth is long, and described little tooth tooth is short, long-pending the remaining unchanged of the core section of every phase and pole span shortens, stator coil end length diminishes relatively, and coil resistance is little, loss reduces, and efficiency increases.
3, owing to forming the number of teeth only three of stator one pole, compared to the existing single-phase or three phase electric machine of same specification, the number of teeth reduces relatively, and the minimizing of the number of teeth will reduce teeth portion harmonic wave electromotive force and improve copper factor.
4, the two-phase winding of described two-phase brushless DC motor stator spatially 90 ° of electrical degrees each other, when making energising, two-phase composite magnetic power and the permanent magnetic potential of rotor are always 90 ° of electrical degrees, and moment keeps maximum forever.
Accompanying drawing explanation
Fig. 1 is stator deployed configuration schematic diagram of the present invention;
Fig. 2 is the present invention two phase brushless DC motor general assembly structural representation;
Fig. 3 is three-phase brushless dc motor of the present invention or three-phase switch reluctance machine general assembly structural representation;
Fig. 4 to be stator of the present invention with rotor intersect skewed slot deployed configuration schematic diagram;
Fig. 5 is two-phase brushless DC motor stator diphase winding coiling schematic diagram of the present invention;
Fig. 6 is two-phase brushless DC motor stator of the present invention, rotor four pole schematic diagram;
Fig. 7 is the present invention two phase brushless DC motor two-phase H bridge driver electronics commutation main circuit;
Fig. 8 is three-phase brushless dc motor stator three-phase coil coiling schematic diagram of the present invention;
Fig. 9 is three-phase brushless dc motor stator of the present invention, rotor ends of the earth schematic diagram;
Figure 10 is three-phase brushless dc motor three-phase H bridge driver electronics commutation main circuit of the present invention;
Figure 11 is three-phase switch reluctance machine stator three-phase coil coiling schematic diagram of the present invention;
Figure 12 is three-phase switch reluctance machine stator of the present invention, rotor four pole schematic diagram;
Figure 13 is three-phase switch reluctance machine Three-phase electronic commutation main circuit schematic diagram of the present invention;
Figure 14 is the general assembly structural representation of motor with cup rotor of the present invention;
Figure 15 is the magnetic guiding loop of motor with cup rotor of the present invention and the assembling schematic diagram of stator;
Figure 16 is the structural representation of the magnetic guiding loop of motor with cup rotor of the present invention;
Figure 17 is the structural representation of the upper conductive magnetic yoke of motor with cup rotor of the present invention;
Figure 18 is the canine tooth spliced map of stator of the present invention.
Wherein: 1-canine tooth; The little tooth of 2-; 3-teeth groove; 4-coil; 5-canine tooth cambered surface air gap; 6-little sector face air gap; 7, upper conductive magnetic yoke; 8, lower conductive magnetic yoke; 9-stator; 10-rotor; 11-A phase core magnetic pole; 22-B phase core magnetic pole; 33-C phase core magnetic pole; 12-rotor-position permanent magnet poles; 13-support; 14-hall position sensor; 15-spacing; 16-groove; 17-male dovetail tooth; 18-female dovetail groove.
Embodiment
Technical scheme of the present invention is further illustrated by embodiment below in conjunction with accompanying drawing.
Execution mode one
As shown in Figure 1, the invention discloses a kind of stator 9, described stator 9 comprises canine tooth 1 and little tooth 2, described canine tooth 1 and described little tooth 2 cycle are alternately arranged, circular arc between adjacent canine tooth 1 tooth body center line with little tooth 2 tooth body center line is apart from identical, the association of some teeth groove 3 is between canine tooth 1 and little tooth 2, canine tooth 1 tooth body width is more than two times or two times of little tooth 2 tooth body width, canine tooth 1 and little tooth 2 tooth body width are determined according to the size of the power of motor and motor size, described canine tooth 1 tooth body width is more than two times or two times of described little tooth 2 tooth body width, winding is embedded with in described teeth groove 3, every pole iron core in every phase winding is respectively by little tooth 2, canine tooth 1, little tooth 2 is arranged in order composition, have the little tooth 2 that shared between the winding that every phase winding is adjacent, every phase winding includes a canine tooth 1 and two little teeth 2, and canine tooth 1 is main, and the little tooth in left and right 2 is auxiliary.
The canine tooth cambered surface air gap 5 of setting canine tooth 1 and little tooth 2 and little sector face air gap 6, make the polar arc face air gap of the every phase of described stator 9 in the shape that distributes similar in appearance to sinusoidal rule, the magnetic potential ripple that coil 4 after energising produces is in the shape that distributes similar in appearance to sinusoidal rule, in addition every phase winding is adjacent a shared little tooth 2 between winding, phase and phase homopolar field is made to merge handing-over, produce similar in appearance to circular rotating field, reduce the pulsation phenomenon of motor, make electric motor starting steady; Owing to forming the number of teeth only three teeth of stator 9 one pole, compared to the existing single-phase of same specification or three phase electric machine or polyphase machine, the groove number of teeth reduces relatively, and the minimizing of the groove number of teeth will reduce teeth portion harmonic wave electromotive force and improve copper factor.
In order to realize the polar arc face air gap of the every phase of stator 9 in the shape that distributes similar in appearance to sinusoidal rule, the canine tooth cambered surface air gap 5 of described canine tooth 1 and little tooth 2 and little sector face air gap 6 can set according to following three kinds of situations.Certainly, the scope that the application protects not only is confined to following described mode, polar arc face air gaps that other are any realizes the every phase of stator 9 in the canine tooth of the stator similar in appearance to sinusoidal rule distribution shape and the gap setting means of little tooth all by the protection of the application.
Mode one: the tooth top cambered surface of canine tooth 1 is by sinusoidal rule change, canine tooth cambered surface air gap 5 between canine tooth 1 and rotor 10 is sinusoidal gradual change air gap big in the end and small in the middle, and the little sector face air gap 6 between little tooth 2 and rotor 10 is even air gap and is greater than the two ends air gap of canine tooth cambered surface air gap 5.
Mode two: the tooth top cambered surface of canine tooth 1 is symmetrical top rake, canine tooth cambered surface air gap 5 between canine tooth 1 and rotor 10 is gradual change air gap big in the end and small in the middle, and the little sector face air gap 6 between little tooth 2 and rotor 10 is even air gap and is greater than the two ends air gap of canine tooth cambered surface air gap 5.
Mode three: the canine tooth cambered surface air gap 5 between described canine tooth 1 and rotor 10 is even air gap, the little sector face air gap 6 between little tooth 2 and rotor 10 is even air gap and is greater than canine tooth cambered surface air gap 5.
Described in above-mentioned three kinds of modes, canine tooth 1 tooth is long, and described little tooth 2 tooth is short, thus every phase long-pending the remaining unchanged of core section and pole span shortens, coil 4 tip lengths of described stator 9 shortens, coil 4 resistance decreasing, and loss reduces, and electric efficiency is increased.
Mode four: except above-mentioned three kinds of modes, the little sector face air gap 6 between described little tooth 2 and rotor 10 and the canine tooth cambered surface air gap 5 between canine tooth 1 and rotor 10 can also be even air gap, and canine tooth cambered surface air gap 5 is identical with little sector face air gap 6.The magnetic potential ripple that this setup makes the coil 4 after being energized produce is in the magnetic field similar in appearance to square wave, but every phase winding is adjacent a shared little tooth 2 between winding in addition, phase and phase homopolar field is made to merge handing-over, still produce similar in appearance to circular rotating field, reduce the pulsation phenomenon of motor, make electric motor starting steady.This mode is for above-mentioned three kinds, and pulsation is relatively large, but it has the advantage of the power that improve motor.
As shown in figure 18, the described canine tooth 1 tooth body root of above-mentioned four kinds of stators and yoke are bordered on portion and can be split assembled, and described canine tooth 1 tooth body root is male dovetail tooth 17 is that female dovetail groove 18 closely splices in convex-concave swallow-tail form teeth groove with yoke internal side diameter; It is similar in appearance to stepped tooth that the tooth top arc length of described little tooth 2 tooth body is greater than tooth root arc length; Described stator 9 procedure is that the rear male dovetail tooth 17 canine tooth 1 tooth body root is set in yoke internal side diameter female dovetail groove 18 li by first for electromagnetic wire coiling on the little tooth 2 in left and right.
Described stator 9 material is for comprising high magnetic conduction silicon steel sheet or silicon steel sheet and high conductivity wire; Stator 9 is internal stator or external stator or disc type stator or linear stator; Stator 9 profile is square or circular; Stator 9 uses as the stator of single-phase or three phase electric machine, polyphase machine or generator.
When described stator is load motor use, also comprise rotor, described rotor is mouse-cage type, winding-type, permanent magnet poles type; Described stator comprises A phase winding and described B phase winding, described A phase winding and described B phase winding spatially 90 ° of electrical degrees each other.
When described stator is three phase alternating current motor use, also comprise rotor, described rotor is mouse-cage type, winding-type, permanent magnet poles type; Described stator for comprising A phase winding, B phase winding and C phase winding, described A phase winding, B phase winding and C phase winding spatially 120 ° of electrical degrees each other.
When described stator is multi-phase AC motor use, also comprise rotor and frequency converter, described rotor is mouse-cage type, permanent magnet poles type; Described stator for comprising arbitrarily A phase winding, B phase winding and C phase winding, described A phase winding, B phase winding and C phase winding spatially 120 ° of electrical degrees each other; Or described stator comprises arbitrarily an A phase winding and described B phase winding, described A phase winding and described B phase winding spatially 90 ° of electrical degrees each other; Described frequency converter is that three-phase or two-phase are corresponding with described winding phases between phase and phase.
Execution mode two
A kind of brshless DC motor, comprise the arbitrary described stator 9 of execution mode, rotor 10 and electronics commutation device, described rotor 10 is provided with some N/S rotor permanent magnetic poles to parallel magnetization or radial magnetizing, described electronics commutation device comprises hall position sensor 14 and rotor-position permanent magnet poles 12, and described rotor-position permanent magnet poles 12 is covered with by the arrangement of N/S pole alternate intervals or interval is covered with in rotating shaft with rotor 10 permanent magnet poles is coaxial and number of pole-pairs is identical.
When described brshless DC motor is two phase brushless DC motor, described rotor 10 permanent magnet poles doubles as rotor-position permanent magnet poles 12, described hall position sensor 14 is arranged on stator 9 iron core inner circle side and rotor 10 permanent magnet poles forms signals collecting part, as shown in Figure 2.
When described brshless DC motor is three-phase brushless dc motor, described hall position sensor 14 forms signals collecting part with described rotor-position permanent magnet poles 12, described hall position sensor 14 is located at the every phase winding neutral line place of stator 9 by the support 13 be arranged on stator 9 casing, as shown in Figure 3.
When rotor 10 rotates, permanent magnet poles N pole and S pole wheel flow through hall position sensor 14, thus produce the positive and negative Hall voltage of respective rotor 10 position, control field effect transistor conducting, make stator 9 winding switch current in turn after amplifying.
In order to reduce Cogging Torque, the teeth groove 3 of described stator 9 and described rotor 10 permanent magnet poles are set to oblique and in cross shaped head, described stator 9 teeth groove 3 is equal with the gradient of described rotor 10 permanent magnet poles, as shown in Figure 4, when a polar arc face, pole of rotor 10 permanent magnetism one end goes to crossing with polar arc face two, described stator 9 one pole acute angle point, maximum spacing 15 between the cambered surface of other end the two poles of the earth is the width of rebate of more than two times, and this is as the reference of stator 9 rotor 10 skew slot angle; Also will weigh stator 9 and rotor 10 core magnetic pole length in addition to the impact of skew slot angle, length is longer, and its skew slot angle should be less, otherwise larger.
(1) as shown in Figure 5 and Figure 6, described brshless DC motor is two phase brushless DC motors, described stator 9 comprises A phase winding and B phase winding, described A phase winding and described B phase winding spatially 90 ° of electrical degrees each other, wherein, every phase winding number of poles is identical with described rotor 10 permanent magnet poles number of poles, and namely the number of described teeth groove 3 is four times of rotor 10 permanent magnet poles number of poles.
Fig. 6 is described stator 9 teeth groove 3 number is 16, and described rotor 10 permanent magnet poles number of poles is two phase brushless DC motors of 4.The described canine tooth 1 tooth body width of this motor is 8 ㎜, described little tooth 2 tooth body width is 2.6 ㎜, the polar arc face of four A phase core magnetic poles, 11, four B phase core magnetic poles 22 respectively by described canine tooth 1 to be main, the described little tooth 2 in left and right be auxiliary rearrange and polar arc face air gap in the shape that distributes similar in appearance to sinusoidal rule, the every phase winding of described stator 9 connects into the symmetrical magnetic pole of N/S/N/S.
One pole pole span of described rotor 10 permanent magnet poles is (0.65-1.0) π D/P.D is rotor circular diameter, and P is number of poles.
Teeth groove 3 width of rebate of described stator 9 is 0.2mm-3mm.Described hall position sensor 14 has two, is respectively H1, H2; H2 is bonded at side, A phase core magnetic pole 11 pole axis neutral line place, and H1 is bonded at side, B phase core magnetic pole 22 pole axis neutral line place, and H1 and H2 is separated by mechanical angle 45 °.
As shown in Figure 7, described two phase brushless DC motors adopt two-phase H bridge driver open loop or close loop electronic commutation circuit device to control.
(2) as shown in Figure 8 and Figure 9, described brshless DC motor is three-phase brushless dc motor, described stator 9 is for comprising A phase winding, B phase winding and C phase winding, described A phase winding, described B phase winding and described C phase winding spatially 120 ° of electrical degrees each other, wherein, every phase winding number of poles is 1/2 of described rotor 10 permanent magnet poles number of poles, and namely described stator 9 teeth groove 3 number is three times of rotor 10 permanent magnet poles number of poles.
Fig. 9 is described stator 9 teeth groove 3 number is 24, and described rotor 10 permanent magnet poles number of poles is the three-phase brushless dc motor of 8.The canine tooth 1 tooth body width of this motor is 7 ㎜, little tooth 2 tooth body width is 2.6 ㎜, the polar arc face of four A phase core magnetic poles, 11, four B phase core magnetic poles, 22, four C phase core magnetic poles 33 respectively by canine tooth 1 to be main, the little tooth in left and right 2 be auxiliary rearrange and polar arc face air gap in the shape that distributes similar in appearance to sinusoidal rule.
Described stator 9 each adopt multitudinous pole formula winding mutually, adopt method that is in parallel or series connection to connect into N/N/N/N or S/S/S/S tetra-like poles respectively.Such as, the polarity of four A phase core magnetic poles 11 is all the like pole that N/N/N/N or S/S/S/S polarity is consistent, all the other two-phases the like; One pole pole span of described rotor 10 permanent magnet poles is (0.8-1.0) π D/P.D is rotor circular diameter, and P is number of poles.
Teeth groove 3 width of rebate of described stator 9 is 0.2 ㎜-3 ㎜.
As shown in Figure 9, described three-phase brushless dc motor has three hall position sensors 14, and described hall position sensor 14 is located at the pole axis neutral line place of A phase core magnetic pole 11, B phase core magnetic pole 22, C phase core magnetic pole 33 successively by the support 13 be arranged on stator 9 casing; Described rotor-position permanent magnet poles 12 with rotor 10 permanent magnet poles is coaxial and number of pole-pairs is equal, one pole pole span be equal to or less than rotor 10 permanent magnet poles one pole pole span and on locus 90 ° of electrical degrees each other.
As shown in Figure 10, described three-phase brushless dc motor adopts three-phase H bridge driver closed loop or open loop electronics commutation circuit device to control.
Execution mode three
As shown in figure 12, a kind of three-phase switch reluctance machine, comprise the arbitrary described stator 9 of execution mode, also comprise rotor 10 and electronics commutation device, described rotor 10 is provided with some to salient pole iron core, and described rotor 10 salient pole iron core does not have winding and permanent magnet poles; Described commutation device comprises hall position sensor 14 and rotor-position permanent magnet poles 12, described rotor-position permanent magnet poles 12 is independently permanent magnet poles, rotor-position permanent magnet poles 12 is with rotor 10 salient pole iron core is coaxial and number of pole-pairs is identical, the spatially 0 ° of electrical degree each other of mutual alignment both it, described hall position sensor 14 forms signals collecting part with described rotor-position permanent magnet poles 12, described hall position sensor 14 is located at the every phase winding neutral line place of stator 9 by the support 13 be arranged on stator 9 casing, as shown in Figure 3.
When rotor 10 rotates, permanent magnet poles N pole and S pole wheel flow through hall position sensor 14, thus produce the positive and negative Hall voltage of respective rotor 10 position, control field effect transistor conducting, make stator 9 winding switch current in turn after amplifying.
Described stator 9 is for comprising A phase winding and B phase winding and C phase winding, described A phase winding, described B phase winding and described C phase winding spatially 120 ° of electrical degrees each other, wherein, every phase winding number of poles is identical with described rotor 10 salient pole iron core number of poles, and namely described stator 9 teeth groove 3 number is six times of rotor 10 salient pole iron core number of poles.
Figure 11 is the number of described stator 9 teeth groove 3 is 24, and described rotor 10 salient pole iron core number of poles is the three-phase switch reluctance machine of 4.The described canine tooth 1 tooth body width of this motor is 6 ㎜, described little tooth 2 tooth body width is 2.6 ㎜, the polar arc face of four A phase core magnetic poles, 11, four B phase core magnetic poles, 22, four C phase core magnetic poles 33 respectively by described canine tooth 1 to be main, the described little tooth 2 in left and right be auxiliary rearrange and polar arc face air gap in the shape that distributes similar in appearance to sinusoidal rule, the every phase winding of described stator 9 connects into symmetrical N/S/N/S tetra-magnetic poles respectively.
One pole pole span of described rotor 10 salient pole iron core is (0.38-0.42) π D/P.D is rotor circular diameter, and P is number of poles.Teeth groove 3 width of rebate of described stator 9 is 0.2 ㎜-3 ㎜.
In order to reduce Cogging Torque, the teeth groove 3 of described stator 9 and described rotor 10 salient pole iron core are set to oblique and in cross shaped head, described stator 9 teeth groove 3 is equal with the gradient of described rotor 10 salient pole iron core, as shown in Figure 4, when a polar arc face, pole of rotor 10 salient pole iron core one end goes to crossing with polar arc face two, described stator 9 one pole acute angle point, maximum spacing 15 between the cambered surface of other end the two poles of the earth is the width of rebate of more than two times, and this is as the reference of stator 9 rotor 10 skew slot angle; Also will weigh stator 9 and rotor 10 core length in addition to the impact of skew slot angle, length is longer, and its skew slot angle should be less, otherwise larger.
As shown in figure 13, described three-phase switch reluctance machine also configures Three-phase electronic commutation circuit control device, different as required, can adopt closed loop, also can adopt controlling of open loop.
Execution mode four
As shown in figure 14, a kind of motor with cup rotor, comprise the arbitrary described stator 9 of execution mode, also comprise rotor 10 and magnetic guiding loop, as shown in figure 16, described magnetic guiding loop comprises conductive magnetic yoke 7 and lower conductive magnetic yoke 8, described upper conductive magnetic yoke 7 and described lower conductive magnetic yoke 8 gapless close fit, described magnetic guiding loop is symmetricly set in described stator 9 circumference, and the number of described magnetic guiding loop and described stator poles ratio are 1 ︰ 1.
As shown in Figure 15-Figure 17, described stator comprises described A phase winding and described B phase winding, the spatially 90 ° of electrical degrees each other of B phase winding described in described A phase winding; When described A phase winding is main winding, described B phase winding is auxiliary winding; When described B phase winding is main winding, described A phase winding is auxiliary winding; Described main winding is multiturn coil, and described secondary coil is single turn short-circuited coil or multiturn short-circuited coil.Described upper conductive magnetic yoke 7 is located at described stator 9 iron core both ends or one end and is integrated with stator pressing, described upper conductive magnetic yoke 7 is pressed on A phase canine tooth 1 and B phase canine tooth 1 position, and with lower conductive magnetic yoke 8 in surrounding adjacent described A phase winding coil one effective edge and described B phase winding coil one effective edge similar in appearance to " returning " font, that is: groove 16 be embedded with described A phase winding coil and described B phase winding coil respectively wherein.
Above-mentioned arbitrary execution mode also can be applied on disc type electric machine, comprises two-phase, three-phase brushless DC-disc type motor or threephase switch magnetic resistance disc type electric machine.Above-mentioned arbitrary execution mode also can be applied on linear electric motors, comprises two-phase, three-phase brushless DC linear electric motor or threephase switch magnetic resistance linear electric motors.
Below know-why of the present invention is described in conjunction with specific embodiments.These describe just in order to explain principle of the present invention, and can not be interpreted as limiting the scope of the invention by any way.Based on explanation herein, those skilled in the art does not need to pay performing creative labour can associate other embodiment of the present invention, and these modes all will fall within protection scope of the present invention.
Claims (17)
1. a stator, it is characterized in that, comprise canine tooth (1) and little tooth (2), described canine tooth (1) and described little tooth (2) cycle are alternately arranged, adjacent canine tooth (1) tooth body center line and the circular arc between little tooth (2) tooth body center line are apart from identical, the association of some teeth groove (3) is between canine tooth (1) and little tooth (2), make the iron core of every phase winding of formation respectively by little tooth (2) at the inner coil (4) that is embedded with of described teeth groove (3), canine tooth (1), little tooth (2) three tooth is arranged in order composition, every phase winding is adjacent a shared little tooth (2) between winding, the tooth top cambered surface of canine tooth (1) is by sinusoidal rule change, canine tooth cambered surface air gap (5) between canine tooth (1) and rotor (10) is middle little, the sinusoidal gradual change air gap that two ends are large, little sector face air gap (6) between described little tooth (2) and rotor (10) is for even air gap and be greater than the two ends air gap of canine tooth cambered surface air gap (5), the polar arc face air gap of every phase winding is in the shape that distributes similar in appearance to sinusoidal rule.
2. a stator, it is characterized in that, comprise canine tooth (1) and little tooth (2), described canine tooth (1) and described little tooth (2) cycle are alternately arranged, adjacent canine tooth (1) tooth body center line and the circular arc between little tooth (2) tooth body center line are apart from identical, the association of some teeth groove (3) is between canine tooth (1) and little tooth (2), make the iron core of every phase winding of formation respectively by little tooth (2) at the inner coil (4) that is embedded with of described teeth groove (3), canine tooth (1), little tooth (2) three tooth is arranged in order composition, every phase winding is adjacent a shared little tooth (2) between winding, the tooth top cambered surface of canine tooth (1) is symmetrical top rake, canine tooth cambered surface air gap (5) between canine tooth (1) and rotor (10) is middle little, the gradual change air gap that two ends are large, little sector face air gap (6) between little tooth (2) and rotor (10) is for even air gap and be greater than the two ends air gap of canine tooth cambered surface air gap (5), the polar arc face air gap of every phase winding is in the shape that distributes similar in appearance to sinusoidal rule.
3. a stator, it is characterized in that, comprise canine tooth (1) and little tooth (2), described canine tooth (1) and described little tooth (2) cycle are alternately arranged, adjacent canine tooth (1) tooth body center line and the circular arc between little tooth (2) tooth body center line are apart from identical, the association of some teeth groove (3) is between canine tooth (1) and little tooth (2), make the iron core of every phase winding of formation respectively by little tooth (2) at the inner coil (4) that is embedded with of described teeth groove (3), canine tooth (1), little tooth (2) three tooth is arranged in order composition, every phase winding is adjacent a shared little tooth (2) between winding, canine tooth cambered surface air gap (5) between described canine tooth (1) and rotor (10) is even air gap, little sector face air gap (6) between little tooth (2) and rotor (10) is for even air gap and be greater than canine tooth cambered surface air gap (5), the polar arc face air gap of every phase winding is in the shape that distributes similar in appearance to sinusoidal rule.
4. a stator, it is characterized in that: comprise canine tooth (1) and little tooth (2), described canine tooth (1) and described little tooth (2) cycle are alternately arranged, adjacent canine tooth (1) tooth body center line and the circular arc between little tooth (2) tooth body center line are apart from identical, the association of some teeth groove (3) is between canine tooth (1) and little tooth (2), make the iron core of every phase winding of formation respectively by little tooth (2) at the inner coil (4) that is embedded with of described teeth groove (3), canine tooth (1), little tooth (2) three tooth is arranged in order composition, every phase winding is adjacent a shared little tooth (2) between winding, little sector face air gap (6) between described little tooth (2) and rotor (10) and the canine tooth cambered surface air gap (5) between canine tooth (1) and rotor (10) are even air gap, and canine tooth cambered surface air gap (5) is identical with little sector face air gap (6), can produce similar in appearance to square wave field after coil electricity.
5. according to the arbitrary described stator of claim 1-4, it is characterized in that: canine tooth (1) tooth body root and yoke are bordered on portion and can be split assembled, described canine tooth (1) tooth body root is male dovetail tooth (17) is that female dovetail groove (18) closely splices in convex-concave swallow-tail form teeth groove with yoke internal side diameter; It is similar in appearance to stepped tooth that the tooth top arc length of described little tooth (2) tooth body is greater than tooth root arc length; Described stator (9) procedure is that it is inner that the rear male dovetail tooth (17) canine tooth (1) tooth body root is set in yoke internal side diameter female dovetail groove (18) by first for electromagnetic wire coiling on the little tooth in left and right (2).
6., according to the arbitrary described stator of claim 1-4, it is characterized in that: described canine tooth (1) tooth body width is more than two times or two times of described little tooth (2) tooth body width.
7. the brshless DC motor with the arbitrary described stator of claim 1-4, it is characterized in that: also comprise rotor (10) and electronics commutation device, described rotor (10) is provided with some N/S rotor permanent magnetic poles to parallel magnetization or radial magnetizing; Described commutation device comprises hall position sensor (14) and rotor-position permanent magnet poles (12), and described rotor-position permanent magnet poles (12) is covered with by the arrangement of N/S pole alternate intervals or interval is covered with in rotating shaft with rotor (10) permanent magnet poles is coaxial and number of pole-pairs is identical.
8. brshless DC motor according to claim 7, it is characterized in that: described brshless DC motor is two phase brushless DC motors, described stator comprises A phase winding and B phase winding, described A phase winding and described B phase winding spatially 90 ° of electrical degrees each other, wherein, every phase winding number of poles is identical with rotor (10) permanent magnet poles number of poles, namely the number of described teeth groove (3) is four times of rotor (10) permanent magnet poles number of poles, and a pole pole span of rotor (10) permanent magnet poles is (0.65-1.0) π D/P.
9. the brshless DC motor according to claim 7 or 8, is characterized in that: the hall position sensor (14) of described two phase brushless DC motors is separately positioned on the A phase winding core magnetic pole of 90 ° of electrical degrees and B phase winding core magnetic pole shaft centre line side each other, locus; Described rotor (10) permanent magnet poles and rotor-position permanent magnet poles (12) 0 ° of electrical degree each other on locus; Described rotor (10) permanent magnet poles doubles as rotor-position permanent magnet poles (12).
10. brshless DC motor according to claim 7, it is characterized in that: described brshless DC motor is three-phase brushless dc motor, described stator is for comprising A phase winding, B phase winding and C phase winding, described A phase winding, described B phase winding and described C phase winding spatially 120 ° of electrical degrees each other, wherein, every phase winding number of poles is 1/2 of rotor (10) permanent magnet poles number of poles, namely the number of described teeth groove (3) is three times of rotor (10) permanent magnet poles number of poles, and a pole pole span of rotor (10) permanent magnet poles is (0.8-1.0) π D/P.
11. brshless DC motors according to claim 7 or 10, it is characterized in that: described rotor-position permanent magnet poles (12) and rotor (10) permanent magnet poles 90 ° of electrical degrees each other on locus, described hall position sensor (14) 120 ° of electrical degrees each other for three-phase and on locus, are separately positioned on A phase winding, B phase winding and C phase winding neutral line place.
12. 1 kinds of three-phase switch reluctance machine with the arbitrary described stator of claim 1-4, it is characterized in that: also comprise rotor (10) and electronics commutation device, described rotor (10) is provided with some to salient pole iron core, and described commutation device comprises hall position sensor (14) and rotor-position permanent magnet poles (12); Described stator is for comprising A phase winding, B phase winding and C phase winding, described A phase winding, described B phase winding and described C phase winding spatially 120 ° of electrical degrees each other, wherein, every phase winding number of poles is identical with rotor (10) salient pole iron core number of poles, namely the number of described teeth groove (3) is six times of rotor (10) salient pole iron core number of poles, and a pole pole span of rotor (10) salient pole iron core is (0.38-0.42) π D/P.
13. three-phase switch reluctance machine according to claim 12, it is characterized in that: described rotor-position permanent magnet poles (12) with rotor (10) salient pole iron core is coaxial and number of pole-pairs is identical, described rotor-position permanent magnet poles (12) pole pole span be equal to or less than rotor (10) salient pole iron core one pole pole span and on empty position 0 ° of electrical degree each other.
14. three-phase switch reluctance machine according to claim 12 or 13, it is characterized in that: described hall position sensor (14) 120 ° of electrical degrees each other for three-phase and on locus, are separately positioned on A phase winding, B phase winding and C phase winding neutral line place.
15. 1 kinds of motor with cup rotor with the arbitrary described stator of claim 1-4, it is characterized in that: also comprise rotor (10) and magnetic guiding loop, described magnetic guiding loop comprises conductive magnetic yoke (7) and lower conductive magnetic yoke (8), described upper conductive magnetic yoke (7) and described lower conductive magnetic yoke (8) gapless close fit, described magnetic guiding loop is symmetricly set in described stator (9) circumference, and the number of described magnetic guiding loop and described stator poles ratio are 1 ︰ 1.
16. motor with cup rotor according to claim 15, is characterized in that: described stator comprises described A phase winding and described B phase winding, the spatially 90 ° of electrical degrees each other of B phase winding described in described A phase winding; When described A phase winding is main winding, described B phase winding is auxiliary winding; When described B phase winding is main winding, described A phase winding is auxiliary winding; Described main winding is multiturn coil, and described secondary coil is single turn short-circuited coil or multiturn short-circuited coil.
17. motor with cup rotor according to claim 16, it is characterized in that: described upper conductive magnetic yoke (7) is located at described stator (9) iron core both ends or one end and is integrated with stator pressing, described upper conductive magnetic yoke (7) is pressed on A phase canine tooth (1) and B phase canine tooth (1) position, and with lower conductive magnetic yoke (8) in surrounding adjacent described A phase winding coil one effective edge and described B phase winding coil one effective edge similar in appearance to " returning " font, that is: groove (16) be embedded with described A phase winding coil and described B phase winding coil respectively wherein.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510358678.1A CN104917309A (en) | 2015-06-25 | 2015-06-25 | Stator, and brushless direct current motor, three-phase switch reluctance motor and shaded pole motor provided with stator |
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|---|---|---|---|
| CN201510358678.1A CN104917309A (en) | 2015-06-25 | 2015-06-25 | Stator, and brushless direct current motor, three-phase switch reluctance motor and shaded pole motor provided with stator |
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| CN104917309A true CN104917309A (en) | 2015-09-16 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105449936A (en) * | 2015-09-30 | 2016-03-30 | 徐州南普机电科技有限公司 | Sinusoidal motor with 48-degree hall groove and built-in hall unit, hall assembly, and hall groove determination method |
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| JP3412370B2 (en) * | 1995-12-13 | 2003-06-03 | 国産電機株式会社 | Stator of magnet generator for internal combustion engine |
| CN201541153U (en) * | 2009-09-11 | 2010-08-04 | 深圳航天科技创新研究院 | Large-diameter square-wave three-phase brushless DC motor |
| CN103795206A (en) * | 2012-11-05 | 2014-05-14 | 顾明 | Reversible shaded pole motor |
| CN104410177A (en) * | 2014-07-08 | 2015-03-11 | 顾明 | Stator, corresponding brushless direct current motor and three-phase switch reluctance motor |
| CN205178671U (en) * | 2015-06-25 | 2016-04-20 | 顾明 | Stator and corresponding brushless direct current, three -phase switch magnetic resistance and shaded pole motor thereof |
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- 2015-06-25 CN CN201510358678.1A patent/CN104917309A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3412370B2 (en) * | 1995-12-13 | 2003-06-03 | 国産電機株式会社 | Stator of magnet generator for internal combustion engine |
| CN201541153U (en) * | 2009-09-11 | 2010-08-04 | 深圳航天科技创新研究院 | Large-diameter square-wave three-phase brushless DC motor |
| CN103795206A (en) * | 2012-11-05 | 2014-05-14 | 顾明 | Reversible shaded pole motor |
| CN104410177A (en) * | 2014-07-08 | 2015-03-11 | 顾明 | Stator, corresponding brushless direct current motor and three-phase switch reluctance motor |
| CN205178671U (en) * | 2015-06-25 | 2016-04-20 | 顾明 | Stator and corresponding brushless direct current, three -phase switch magnetic resistance and shaded pole motor thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105449936A (en) * | 2015-09-30 | 2016-03-30 | 徐州南普机电科技有限公司 | Sinusoidal motor with 48-degree hall groove and built-in hall unit, hall assembly, and hall groove determination method |
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