CN109038871A - A kind of on-off reluctance motor with sectional rotor - Google Patents
A kind of on-off reluctance motor with sectional rotor Download PDFInfo
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- CN109038871A CN109038871A CN201811008802.1A CN201811008802A CN109038871A CN 109038871 A CN109038871 A CN 109038871A CN 201811008802 A CN201811008802 A CN 201811008802A CN 109038871 A CN109038871 A CN 109038871A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/14—Stator cores with salient poles
- H02K1/146—Stator cores with salient poles consisting of a generally annular yoke with salient poles
- H02K1/148—Sectional cores
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/24—Rotor cores with salient poles ; Variable reluctance rotors
- H02K1/246—Variable reluctance rotors
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2213/00—Specific aspects, not otherwise provided for and not covered by codes H02K2201/00 - H02K2211/00
- H02K2213/03—Machines characterised by numerical values, ranges, mathematical expressions or similar information
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Abstract
The invention discloses a kind of on-off reluctance motor with sectional rotor.The motor is made of stator, rotor and coil；Number of stator teeth is 9n, and rotor number of poles is m, and the number of phases 3, n is natural number, and m is equal to 4n, 5n or 6n；The rotor is by m rotor core and 1 non-magnetic supporting framework at and rotor core is fixed on non-magnetic support frame；The stator tooth includes 3n wide teeth and 6n narrow teeth, and 9n stator tooth is evenly arranged, and adjacent stators between cog differs 40 °/n, and wide tooth differs 120 °/n with wide tooth, and wide tooth and wide between cog are disposed with 2 narrow teeth；It is wound with 1 coil on each narrow tooth, coil on wide tooth, the coil on adjacent two narrow tooth belongs to same phase winding, and the polarity of the magnetic field that all coils generate is identical；Every phase is short magnetic circuit, and core loss is small；Alternate magnetic circuit only interlinks on wide tooth, and Coupling Between Phases are weak.Motor of the present invention has a variety of rotor numbers of poles, can facilitate according to the specific application occasions and choose the cooperation of stator and rotor number of poles, optimal to reach output performance.
Description
Technical field
The present invention relates to a kind of on-off reluctance motor with sectional rotor, belong to the technical field of switch reluctance motor of electric machinery.
Background technique
Switched reluctance machines stator and rotor are double-salient-pole structure, rotor without winding and permanent magnet, have structure simple rigid,
Low cost, the features such as high temperature resistant and high-speed adaptability are strong are led in military and civilians such as aerospace, Precision Machining, electric cars
Domain is widely used.
However, so that the windage loss of switched reluctance machines is bigger, and further exacerbating vibration due to the salient-pole structure of rotor
Noise problem weakens it in the application in low noise field.For this purpose, there has been proposed a kind of entitled on-off reluctance motor with sectional rotor
(Segmented Switched Reluctance Motor), to reduce windage loss and reduce noise.Sectional rotor switched magnetic
The rotor for hindering motor is cylindrical structure, and periphery is smooth, can effectively reduce wind moussing loss.But, conventional segmented rotor
Switched reluctance machines generally use 6/4,8/6,12/8,12/10 classical architectures such as extremely, based on operation mechanism requirement, these structures
Alternate magnetic circuit there are stronger couplings, alternate mutual inductance is larger, by mutual inductance generate mutual inductance torque it is also larger, lead to torque pulsation
Increase；In addition, Coupling Between Phases also cause the fault-tolerance of motor and reliability to reduce.
Therefore, it is 9n present applicant proposes a kind of stator, the on-off reluctance motor with sectional rotor of rotor 4n, 5n, 6n, removes
Have short magnetic circuit and iron loss small outer, the assembly easy to process of centralized winding construction, consumption copper are few；To reduce Coupling Between Phases, altogether
The magnetic pole of alternate magnetic circuit altogether uses wide toothing, and mutual inductance influences small, reliability and fault-tolerance promotion on output torque；In addition,
Novel stator and rotor fit form, enriches switched reluctance machines structural topology.
Summary of the invention
The present invention for overcome the deficiencies in the prior art, proposes a kind of on-off reluctance motor with sectional rotor.The motor by
Stator, rotor and coil are constituted；Number of stator teeth is 9n, and rotor number of poles is m, the number of phases 3, and n is natural number, m be equal to 4n, 5n or
6n；The rotor is by m rotor core and 1 non-magnetic supporting framework at and rotor core is fixed on non-magnetic support frame；
The stator tooth includes 3n wide teeth and 6n narrow teeth, and 9n stator tooth is evenly arranged, and adjacent stators between cog differs 40 °/n, wide
Tooth differs 120 °/n with wide tooth, and wide tooth and wide between cog are disposed with 2 narrow teeth；It is wound with 1 coil on each narrow tooth, it is wireless on wide tooth
It encloses, the coil on adjacent two narrow tooth belongs to same phase winding, and the polarity of the magnetic field that all coils generate is identical；Every phase magnetic circuit is short
Magnetic structure, core loss are small；In addition, alternate magnetic circuit only has interlinkage on wide tooth, alternate flux coupled is weak；Motor tool of the present invention
There are many rotor numbers of poles, can facilitate according to the specific application occasions and choose the cooperation of stator and rotor number of poles, optimal to reach output performance.
In order to solve the above-mentioned technical problem, the technical solution adopted by the present invention are as follows:
A kind of on-off reluctance motor with sectional rotor is three-phase duty motor, including stator, rotor and coil；The rotor by
Rotor core and non-magnetic supporting framework at；
The stator is salient-pole structure, and number of stator teeth 9n, n are natural number；The stator tooth includes that 3n wide teeth and 6n are narrow
Tooth, 9n stator tooth are evenly arranged, and adjacent stators between cog differs 40 °/n, and wide tooth differs 120 °/n, wide tooth and wide between cog with wide tooth
It is disposed with 2 narrow teeth；The facewidth of 6n narrow teeth is equal, and the facewidth of 3n wide teeth is equal；
1 coil is wound on each narrow tooth, total 6n is a；2 coils on adjacent two narrow tooth, using serial or parallel connection form, even
It is connected in 1 coil string, total 3n is a；The 3n coil strings spatially differ 120 °/n；
When n=1, totally 3 coil strings, each coil string are individually connected as a phase winding to the motor, altogether three-phase；
When n >=2, the total 3n coil string of motor spatially differs the n coil string of 360 °/n, using serial or parallel connection shape
Formula is connected as a phase winding, altogether three-phase；
The number of poles of the rotor is m, and m is equal to 4n, 5n or 6n, i.e., there are three types of stator and rotor combining forms for the described motor tool, respectively
9n/4n, 9n/5n and 9n/6n；
The rotor includes m rotor core and 1 non-magnetic support frame；The rotor core is sector structure, described non-to lead
Magnetic support frame is salient-pole structure, number of teeth m；M tooth of non-magnetic support frame is uniformly distributed, and tooth differs 360 °/m with tooth；It is described
The two neighboring between cog of non-magnetic support frame fixes 1 rotor core；The rotor core is outer with non-magnetic support frame
Face forms 1 smooth continuous cylindrical surface；
The control mode of the motor, as Conventional switched reluctance motor, excitation is connected in turn to generate torque in three-phase windings.
Beneficial effects of the present invention: the invention proposes a kind of on-off reluctance motor with sectional rotor, using skill of the invention
Art scheme can reach following technical effect:
(1) identical number of stator teeth, specific three kinds of rotor numbers of poles, convenient for choosing the cooperation of stator and rotor number of poles according to application, with
Keep motor output performance optimal；
(2) alternate winding is mutually isolated, high reliablity, and alternate magnetic circuit is only interlinked by the wide tooth of no winding, and stiffness of coupling is small.
Detailed description of the invention
Fig. 1 is the two-dimensional structure schematic diagram of 9/4 pole on-off reluctance motor with sectional rotor of the embodiment of the present invention one.
Fig. 2 is the magnetic line of force distribution that the rotor of the embodiment of the present invention one is in that A phase winding electric current generates when being misaligned position
Schematic diagram.
Fig. 3 is that the magnetic line of force distribution that A phase winding electric current generates when the rotor of the embodiment of the present invention one is in aligned position is shown
It is intended to.
Fig. 4 is the phase inductance result of finite element of the embodiment of the present invention one.
Fig. 5 is the phase torque result of finite element of the embodiment of the present invention one.
Fig. 6 is the two-dimensional structure schematic diagram of 9/5 pole on-off reluctance motor with sectional rotor of the embodiment of the present invention two.
Fig. 7 is the phase inductance result of finite element of the embodiment of the present invention two.
Fig. 8 is the phase torque result of finite element of the embodiment of the present invention two.
Fig. 9 is the two-dimensional structure schematic diagram of 9/6 pole on-off reluctance motor with sectional rotor of the embodiment of the present invention three.
Figure 10 is the phase inductance result of finite element of the embodiment of the present invention three.
Figure 11 is the phase torque result of finite element of the embodiment of the present invention three.
Figure 12 is the two-dimensional structure schematic diagram of 18/8 pole on-off reluctance motor with sectional rotor of the embodiment of the present invention four.
Figure 13 is the two-dimensional structure schematic diagram of 18/10 pole on-off reluctance motor with sectional rotor of the embodiment of the present invention five.
Figure 14 is the two-dimensional structure schematic diagram of 18/12 pole on-off reluctance motor with sectional rotor of the embodiment of the present invention six.
Description of symbols: Fig. 1 is into Figure 14, and 1 is stator, and 2 be rotor core, and 3 be coil, and 4 be non-magnetic support frame,
5 be the magnetic line of force signal that 9/4 pole on-off reluctance motor with sectional rotor rotor is in that A phase winding electric current generates when being misaligned position
Figure, 6 be the magnetic line of force signal that A phase winding electric current generates when 9/4 pole on-off reluctance motor with sectional rotor rotor is in aligned position
Figure, 7 be the phase inductance characteristic curve of 9/4 pole on-off reluctance motor with sectional rotor, and 8 be 9/4 pole on-off reluctance motor with sectional rotor
Phase torque characteristic curve, 9 be the phase inductance characteristic curve of 9/5 pole on-off reluctance motor with sectional rotor, and 10 be that the segmentation of 9/5 pole turns
The phase torque characteristic curve of sub switch reluctance motor, 11 be the phase inductance characteristic curve of 9/6 pole on-off reluctance motor with sectional rotor,
12 be the phase torque characteristic curve of 9/6 pole on-off reluctance motor with sectional rotor.
Specific embodiment
With reference to the accompanying drawing, a kind of technical solution of on-off reluctance motor with sectional rotor of the present invention is described in detail:
As shown in Figure 1, be the two-dimensional structure schematic diagram of 9/4 pole on-off reluctance motor with sectional rotor of the embodiment of the present invention one,
In, 1 is stator, and 2 be rotor core, and 3 be coil, and 4 be non-magnetic support frame.
9/4 pole on-off reluctance motor with sectional rotor is three-phase duty motor, including stator, rotor and coil；Institute
State rotor by rotor core and non-magnetic supporting framework at；
The stator is salient-pole structure, at this time n=1, number of stator teeth 9；The stator tooth include 3 wide teeth and 6 narrow teeth, 9
Stator tooth is evenly arranged, and adjacent stators between cog differs 40 °, and wide tooth differs 120 ° with wide tooth, and wide tooth is disposed with 2 narrow with wide between cog
Tooth；The facewidth of 6 narrow teeth is equal, and the facewidth of 3 wide teeth is equal；
1 coil is wound on each narrow tooth, totally 6；2 coils on adjacent two narrow tooth, using serial or parallel connection form, connection
For 1 coil string, totally 3；3 coil strings spatially differ 120 °；
The rotor includes 4 rotor cores and 1 non-magnetic support frame；The rotor core is sector structure, described non-to lead
Magnetic support frame is salient-pole structure, the number of teeth 4；4 teeth of non-magnetic support frame are uniformly distributed, and tooth differs 90 ° with tooth；It is described non-to lead
The two neighboring between cog of magnetic support frame fixes 1 rotor core；The outside shape of the rotor core and non-magnetic support frame
At 1 smooth continuous cylindrical surface；
Each coil string is individually connected as a phase winding, altogether three-phase, respectively A, B, C phase；The polarity of the magnetic field that all coils generate
Identical, i.e., the polarity of the magnetic field that 6 coils of three-phase windings generate is arranged in NNNNNN or SSSSSS；
A, B, C phase winding is driven using asymmetrical three-phase half-bridge power converter, and successively conducting generates three-phase windings in turn
Torque, to realize the motor operation.
It as shown in Figures 2 and 3, is that 9/4 pole on-off reluctance motor with sectional rotor rotor is in and is misaligned position and right respectively
The magnetic line of force distribution schematic diagram that A phase winding electric current generates when neat position.Wherein, 5 be that rotor is in A phase winding when being misaligned position
The magnetic line of force that electric current generates, 6 be the magnetic line of force that A phase winding electric current generates when rotor is in aligned position.
It defines when rotor tooth is overlapped with tooth center line with armature stator tooth center to be misaligned position, i.e. rotor-position is zero
Degree；It is aligned position when rotor tooth center line is overlapped with armature stator tooth center line, i.e., the mechanical angle of rotor-position is 45 °.
Be misaligned position, the magnetic line of force that A phase generates, tool there are two magnetic circuit, be through narrow tooth, wide tooth adjacent thereto,
Two rotor cores and air gap closure；Since the magnetic resistance of magnetic circuit between two rotor cores is very big, magnetic circuit reluctance is most at this time
Greatly, phase inductance is minimum；
In the magnetic line of force that aligned position, A phase generate, it is through narrow tooth, wide tooth adjacent thereto, 1 that there are two magnetic circuits for same tool
Rotor core and air gap closure, magnetic circuit reluctance is minimum at this time, and phase inductance is maximum；
B, when C phase winding is connected, the magnetic line of force distribution of generation is identical as A phase, spatially differs 120 °, and the magnetic between phase and phase
Road only interlinks on wide tooth, couples weaker.
It as shown in Figure 4 and Figure 5, is the phase inductance and phase torque finite element of 9/4 pole on-off reluctance motor with sectional rotor respectively
Calculated result.Wherein, 7 be 9/4 pole on-off reluctance motor with sectional rotor phase inductance characteristic curve, 8 be that 9/4 pole segmented rotor is opened
Close the phase torque characteristic curve of reluctance motor.
The parameter of 9/4 pole on-off reluctance motor with sectional rotor are as follows: stator outer diameter 130mm, diameter of stator bore 76.6mm, outside rotor
Diameter 76mm, shaft 32mm, axial length 120mm, per tooth coil turn 50；The polar arc angle of wide tooth is 30 °, and the polar arc angle of narrow tooth is
20 °, rotor tooth pole embrace is 0.833.When A phase winding electric current is 5A, phase inductance and phase torque are as shown in the figure.
The phase inductance of the motor is similar to traditional structure switched reluctance machines to phase torque characteristic curve, and inductance is with rotor position
The change rate of angle setting degree is promoted, and is conducive to promote output torque, is reduced torque dead-band；In addition torque characteristic curve is shown,
In [12 °, 30 °] section, there are depressed phenomenons for output torque, but can be improved by Motor Optimizing Design.
As shown in fig. 6, being the two-dimensional structure signal of 9/5 pole on-off reluctance motor with sectional rotor of the embodiment of the present invention two
Figure, wherein 1 is stator, and 2 be rotor core, and 3 be coil, and 4 be non-magnetic support frame.
9/5 pole on-off reluctance motor with sectional rotor is three-phase duty motor, including stator, rotor and coil；Institute
State rotor by rotor core and non-magnetic supporting framework at；
The stator is salient-pole structure, at this time n=1, number of stator teeth 9；The stator tooth include 3 wide teeth and 6 narrow teeth, 9
Stator tooth is evenly arranged, and adjacent stators between cog differs 40 °, and wide tooth differs 120 ° with wide tooth, and wide tooth is disposed with 2 narrow with wide between cog
Tooth；The facewidth of 6 narrow teeth is equal, and the facewidth of 3 wide teeth is equal；
1 coil is wound on each narrow tooth, totally 6；2 coils on adjacent two narrow tooth, using serial or parallel connection form, connection
For 1 coil string, totally 3；3 coil strings spatially differ 120 °；
The rotor includes 5 rotor cores and 1 non-magnetic support frame；The rotor core is sector structure, described non-to lead
Magnetic support frame is salient-pole structure, the number of teeth 5；5 teeth of non-magnetic support frame are uniformly distributed, and tooth differs 72 ° with tooth；It is described non-to lead
The two neighboring between cog of magnetic support frame fixes 1 rotor core；The outside shape of the rotor core and non-magnetic support frame
At 1 smooth continuous cylindrical surface；
Each coil string is individually connected as a phase winding, altogether three-phase, respectively A, B, C phase；The polarity of the magnetic field that all coils generate
Identical, i.e., the polarity of the magnetic field that 6 coils of three-phase windings generate is arranged in NNNNNN or SSSSSS；
A, B, C phase winding is driven using asymmetrical three-phase half-bridge power converter, and successively conducting generates three-phase windings in turn
Torque, to realize the motor operation.
It defines when rotor tooth is overlapped with tooth center line with armature stator tooth center to be misaligned position, i.e. rotor-position is zero
Degree；It is aligned position when rotor tooth center line is overlapped with armature stator tooth center line, i.e., the mechanical angle of rotor-position is 36 °.
Be misaligned position, the magnetic line of force that every phase generates, tool there are two magnetic circuit, be through narrow tooth, wide tooth adjacent thereto,
Two rotor cores and air gap closure；Since the magnetic resistance of magnetic circuit between two rotor cores is very big, magnetic circuit reluctance is most at this time
Greatly, phase inductance is minimum；
In the magnetic line of force that aligned position, every phase generate, it is through narrow tooth, wide tooth adjacent thereto, 1 that there are two magnetic circuits for same tool
A rotor core and air gap closure, magnetic circuit reluctance is minimum at this time, and phase inductance is maximum；
The magnetic line of force distribution that three-phase generates is identical, spatially differs 120 °, and the magnetic circuit between phase and phase only interlinks on wide tooth,
It couples weaker.
It as shown in Figure 7 and Figure 8, is the phase inductance and phase torque finite element of 9/5 pole on-off reluctance motor with sectional rotor respectively
Calculated result.Wherein, 7 be 9/5 pole on-off reluctance motor with sectional rotor phase inductance characteristic curve, 8 be that 9/5 pole segmented rotor is opened
Close the phase torque characteristic curve of reluctance motor.
The parameter of 9/5 pole on-off reluctance motor with sectional rotor are as follows: stator outer diameter 130mm, diameter of stator bore 76.6mm, outside rotor
Diameter 76mm, shaft 32mm, axial length 120mm, per tooth coil turn 50；The polar arc angle of wide tooth is 30 °, and the polar arc angle of narrow tooth is
20 °, rotor tooth pole embrace is 0.833.When A phase winding electric current is 5A, phase inductance and phase torque are as shown in the figure.
The phase inductance of the motor is similar to traditional structure switched reluctance machines to phase torque characteristic curve；Inductance is with rotor position
The change rate of angle setting degree is promoted, and is conducive to promote output torque, is reduced torque dead-band；In addition torque characteristic curve is shown,
The output torque characteristic of the motor is better than 9/4 pole structure.
As shown in figure 9, being the two-dimensional structure signal of 9/6 pole on-off reluctance motor with sectional rotor of the embodiment of the present invention three
Figure, wherein 1 is stator, and 2 be rotor core, and 3 be coil, and 4 be non-magnetic support frame.
9/6 pole on-off reluctance motor with sectional rotor is three-phase duty motor, including stator, rotor and coil；Institute
State rotor by rotor core and non-magnetic supporting framework at；
The stator is salient-pole structure, at this time n=1, number of stator teeth 9；The stator tooth include 3 wide teeth and 6 narrow teeth, 9
Stator tooth is evenly arranged, and adjacent stators between cog differs 40 °, and wide tooth differs 120 ° with wide tooth, and wide tooth is disposed with 2 narrow with wide between cog
Tooth；The facewidth of 6 narrow teeth is equal, and the facewidth of 3 wide teeth is equal；
1 coil is wound on each narrow tooth, totally 6；2 coils on adjacent two narrow tooth, using serial or parallel connection form, connection
For 1 coil string, totally 3；3 coil strings spatially differ 120 °；
The rotor includes 6 rotor cores and 1 non-magnetic support frame；The rotor core is sector structure, described non-to lead
Magnetic support frame is salient-pole structure, the number of teeth 6；6 teeth of non-magnetic support frame are uniformly distributed, and tooth differs 60 ° with tooth；It is described non-to lead
The two neighboring between cog of magnetic support frame fixes 1 rotor core；The outside shape of the rotor core and non-magnetic support frame
At 1 smooth continuous cylindrical surface；
Each coil string is individually connected as a phase winding, altogether three-phase, respectively A, B, C phase；The polarity of the magnetic field that all coils generate
Identical, i.e., the polarity of the magnetic field that 6 coils of three-phase windings generate is arranged in NNNNNN or SSSSSS；
A, B, C phase winding is driven using asymmetrical three-phase half-bridge power converter, and successively conducting generates three-phase windings in turn
Torque, to realize the motor operation.
It defines when rotor tooth is overlapped with tooth center line with armature stator tooth center to be misaligned position, i.e. rotor-position is zero
Degree；It is aligned position when rotor tooth center line is overlapped with armature stator tooth center line, i.e., the mechanical angle of rotor-position is 30 °.
Be misaligned position, the magnetic line of force that every phase generates, tool there are two magnetic circuit, be through narrow tooth, wide tooth adjacent thereto,
Two rotor cores and air gap closure；Since the magnetic resistance of magnetic circuit between two rotor cores is very big, magnetic circuit reluctance is most at this time
Greatly, phase inductance is minimum；
In the magnetic line of force that aligned position, every phase generate, it is through narrow tooth, wide tooth adjacent thereto, 1 that there are two magnetic circuits for same tool
A rotor core and air gap closure, magnetic circuit reluctance is minimum at this time, and phase inductance is maximum；
The magnetic line of force distribution that three-phase generates is identical, spatially differs 120 °, and the magnetic circuit between phase and phase only interlinks on wide tooth,
It couples weaker.
As shown in Figure 10 and Figure 11, be respectively 9/6 pole on-off reluctance motor with sectional rotor phase inductance and phase torque it is limited
First calculated result.Wherein, 7 be 9/6 pole on-off reluctance motor with sectional rotor phase inductance characteristic curve, 8 be 9/6 pole segmented rotor
The phase torque characteristic curve of switched reluctance machines.
The parameter of 9/6 pole on-off reluctance motor with sectional rotor are as follows: stator outer diameter 130mm, diameter of stator bore 76.6mm, outside rotor
Diameter 76mm, shaft 32mm, axial length 120mm, per tooth coil turn 50；The polar arc angle of wide tooth is 30 °, and the polar arc angle of narrow tooth is
20 °, rotor tooth pole embrace is 0.833.When A phase winding electric current is 5A, phase inductance and phase torque are as shown in the figure.
The phase inductance of the motor is similar to traditional structure switched reluctance machines to phase torque characteristic curve；Inductance is with rotor position
The change rate of angle setting degree is promoted, and is conducive to promote output torque, is reduced torque dead-band；In addition torque characteristic curve is shown,
In [9 °, 18 °] section, there are depressed phenomenons for output torque, but can be improved by Motor Optimizing Design, and output performance is not so good as
9/5 structure.
As shown in figure 12, be the embodiment of the present invention four 18/8 pole on-off reluctance motor with sectional rotor two-dimensional structure signal
Figure, wherein 1 is stator, and 2 be rotor core, and 3 be coil, and 4 be non-magnetic support frame.
18/8 pole on-off reluctance motor with sectional rotor is three-phase duty motor, including stator, rotor and coil；
The rotor by rotor core and non-magnetic supporting framework at；
The stator is salient-pole structure, at this time n=2, number of stator teeth 18；The stator tooth includes 6 wide teeth and 12 narrow teeth,
18 stator tooths are evenly arranged, and adjacent stators between cog differs 20 °, and wide tooth differs 60 ° with wide tooth, and wide tooth and wide between cog are disposed with 2
A narrow tooth；The facewidth of 6 narrow teeth is equal, and the facewidth of 3 wide teeth is equal；
1 coil is wound on each narrow tooth, totally 12；2 coils on adjacent two narrow tooth, using serial or parallel connection form, even
It is connected in 1 coil string, totally 6；6 coil strings spatially differ 60 °；
The rotor includes 8 rotor cores and 1 non-magnetic support frame；The rotor core is sector structure, described non-to lead
Magnetic support frame is salient-pole structure, the number of teeth 8；8 teeth of non-magnetic support frame are uniformly distributed, and tooth differs 45 ° with tooth；It is described non-to lead
The two neighboring between cog of magnetic support frame fixes 1 rotor core；The outside shape of the rotor core and non-magnetic support frame
At 1 smooth continuous cylindrical surface；
At this point, the motor totally 6 coil strings, spatially differ 180 ° of 2 coil strings, using serial or parallel connection form, even
It is connected in a phase winding, altogether three-phase, respectively A, B, C phase；The polarity of the magnetic field that all coils generate is identical, i.e. 12 lines of three-phase windings
The polarity of the magnetic field that circle generates is arranged in full N or full S；
A, B, C phase winding is driven using asymmetrical three-phase half-bridge power converter, and successively conducting generates three-phase windings in turn
Torque, to realize the motor operation.
Be misaligned position, the magnetic line of force that every phase generates, tool there are two magnetic circuit, be through narrow tooth, wide tooth adjacent thereto,
Two rotor cores and air gap closure；Since the magnetic resistance of magnetic circuit between two rotor cores is very big, magnetic circuit reluctance is most at this time
Greatly, phase inductance is minimum；
In the magnetic line of force that aligned position, every phase generate, it is through narrow tooth, wide tooth adjacent thereto, 1 that there are two magnetic circuits for same tool
A rotor core and air gap closure, magnetic circuit reluctance is minimum at this time, and phase inductance is maximum；
The magnetic line of force distribution that three-phase generates is identical, spatially differs 60 °, and the magnetic circuit between phase and phase only interlinks on wide tooth,
It couples weaker.
It as shown in figure 13, is that the two-dimensional structure of 18/10 pole on-off reluctance motor with sectional rotor of the embodiment of the present invention four shows
It is intended to, wherein 1 is stator, and 2 be rotor core, and 3 be coil, and 4 be non-magnetic support frame.
18/10 pole on-off reluctance motor with sectional rotor is three-phase duty motor, including stator, rotor and coil；
The rotor by rotor core and non-magnetic supporting framework at；
The stator is salient-pole structure, at this time n=2, number of stator teeth 18；The stator tooth includes 6 wide teeth and 12 narrow teeth,
18 stator tooths are evenly arranged, and adjacent stators between cog differs 20 °, and wide tooth differs 60 ° with wide tooth, and wide tooth and wide between cog are disposed with 2
A narrow tooth；The facewidth of 6 narrow teeth is equal, and the facewidth of 3 wide teeth is equal；
1 coil is wound on each narrow tooth, totally 12；2 coils on adjacent two narrow tooth, using serial or parallel connection form, even
It is connected in 1 coil string, totally 6；6 coil strings spatially differ 60 °；
The rotor includes 10 rotor cores and 1 non-magnetic support frame；The rotor core is sector structure, described non-to lead
Magnetic support frame is salient-pole structure, the number of teeth 10；10 teeth of non-magnetic support frame are uniformly distributed, and tooth differs 36 ° with tooth；It is described non-
The two neighboring between cog of magnetic conduction support frame fixes 1 rotor core；The outside of the rotor core and non-magnetic support frame
Form 1 smooth continuous cylindrical surface；
At this point, the motor totally 6 coil strings, spatially differ 180 ° of 2 coil strings, using serial or parallel connection form, even
It is connected in a phase winding, altogether three-phase, respectively A, B, C phase；The polarity of the magnetic field that all coils generate is identical, i.e. 12 lines of three-phase windings
The polarity of the magnetic field that circle generates is arranged in full N or full S；
A, B, C phase winding is driven using asymmetrical three-phase half-bridge power converter, and successively conducting generates three-phase windings in turn
Torque, to realize the motor operation.
Be misaligned position, the magnetic line of force that every phase generates, tool there are two magnetic circuit, be through narrow tooth, wide tooth adjacent thereto,
Two rotor cores and air gap closure；Since the magnetic resistance of magnetic circuit between two rotor cores is very big, magnetic circuit reluctance is most at this time
Greatly, phase inductance is minimum；
In the magnetic line of force that aligned position, every phase generate, it is through narrow tooth, wide tooth adjacent thereto, 1 that there are two magnetic circuits for same tool
A rotor core and air gap closure, magnetic circuit reluctance is minimum at this time, and phase inductance is maximum；
The magnetic line of force distribution that three-phase generates is identical, spatially differs 60 °, and the magnetic circuit between phase and phase only interlinks on wide tooth,
It couples weaker.
It as shown in figure 14, is that the two-dimensional structure of 18/12 pole on-off reluctance motor with sectional rotor of the embodiment of the present invention four shows
It is intended to, wherein 1 is stator, and 2 be rotor core, and 3 be coil, and 4 be non-magnetic support frame.
18/12 pole on-off reluctance motor with sectional rotor is three-phase duty motor, including stator, rotor and coil；
The rotor by rotor core and non-magnetic supporting framework at；
The stator is salient-pole structure, at this time n=2, number of stator teeth 18；The stator tooth includes 6 wide teeth and 12 narrow teeth,
18 stator tooths are evenly arranged, and adjacent stators between cog differs 20 °, and wide tooth differs 60 ° with wide tooth, and wide tooth and wide between cog are disposed with 2
A narrow tooth；The facewidth of 6 narrow teeth is equal, and the facewidth of 3 wide teeth is equal；
1 coil is wound on each narrow tooth, totally 12；2 coils on adjacent two narrow tooth, using serial or parallel connection form, even
It is connected in 1 coil string, totally 6；6 coil strings spatially differ 60 °；
The rotor includes 12 rotor cores and 1 non-magnetic support frame；The rotor core is sector structure, described non-to lead
Magnetic support frame is salient-pole structure, the number of teeth 12；12 teeth of non-magnetic support frame are uniformly distributed, and tooth differs 30 ° with tooth；It is described non-
The two neighboring between cog of magnetic conduction support frame fixes 1 rotor core；The outside of the rotor core and non-magnetic support frame
Form 1 smooth continuous cylindrical surface；
At this point, the motor totally 6 coil strings, spatially differ 180 ° of 2 coil strings, using serial or parallel connection form, even
It is connected in a phase winding, altogether three-phase, respectively A, B, C phase；The polarity of the magnetic field that all coils generate is identical, i.e. 12 lines of three-phase windings
The polarity of the magnetic field that circle generates is arranged in full N or full S；
A, B, C phase winding is driven using asymmetrical three-phase half-bridge power converter, and successively conducting generates three-phase windings in turn
Torque, to realize the motor operation.
Be misaligned position, the magnetic line of force that every phase generates, tool there are two magnetic circuit, be through narrow tooth, wide tooth adjacent thereto,
Two rotor cores and air gap closure；Since the magnetic resistance of magnetic circuit between two rotor cores is very big, magnetic circuit reluctance is most at this time
Greatly, phase inductance is minimum；
In the magnetic line of force that aligned position, every phase generate, it is through narrow tooth, wide tooth adjacent thereto, 1 that there are two magnetic circuits for same tool
A rotor core and air gap closure, magnetic circuit reluctance is minimum at this time, and phase inductance is maximum；
The magnetic line of force distribution that three-phase generates is identical, spatially differs 60 °, and the magnetic circuit between phase and phase only interlinks on wide tooth,
It couples weaker.
When n >=3, still there is above-mentioned characteristic, share 3n coil string, spatially differ the n coil string of 360 °/n, use
Serial or parallel connection form is connected as a phase winding, altogether three-phase；The magnetic line of force distribution that three-phase generates is identical, spatially differs
120 °/n, and the magnetic circuit between phase and phase only interlinks on wide tooth.
In conclusion a kind of on-off reluctance motor with sectional rotor of the present invention, when identical number of stator teeth, specific three kinds of rotor poles
Number, convenient for the cooperation of stator and rotor number of poles being chosen, so that motor output performance is optimal according to application；
In addition, alternate winding is mutually isolated, high reliablity, and alternate magnetic circuit is only interlinked by the wide tooth of no winding, stiffness of coupling
Small, reliability and fault-tolerance are high.
For those skilled in the art, it is excellent that association's others can be easy to according to the above implementation type
Point and deformation.Therefore, the invention is not limited to above-mentioned specific example, as just example to a kind of form of the invention into
Detailed, the exemplary explanation of row.In the range of without departing substantially from present inventive concept, those of ordinary skill in the art are according to above-mentioned specific
Example should be included in scope of the presently claimed invention and its wait homotypes by the obtained technical solution of various equivalent replacements
Within enclosing.
Claims (1)
1. a kind of on-off reluctance motor with sectional rotor is three-phase duty motor, including stator, rotor and coil；The rotor
By rotor core and non-magnetic supporting framework at；It is characterized in that,
The stator is salient-pole structure, and number of stator teeth 9n, n are natural number；The stator tooth includes that 3n wide teeth and 6n are narrow
Tooth, 9n stator tooth are evenly arranged, and adjacent stators between cog differs 40 °/n, and wide tooth differs 120 °/n, wide tooth and wide between cog with wide tooth
It is disposed with 2 narrow teeth；The facewidth of 6n narrow teeth is equal, and the facewidth of 3n wide teeth is equal；
1 coil is wound on each narrow tooth, total 6n is a；2 coils on adjacent two narrow tooth, using serial or parallel connection form, even
It is connected in 1 coil string, total 3n is a；The 3n coil strings spatially differ 120 °/n；
When n=1, the motor has 3 coil strings, and each coil string is individually connected as a phase winding, altogether three-phase；
When n >=2, the motor has 3n coil string, the n coil string of 360 °/n is spatially differed, using serial or parallel connection shape
Formula is connected as a phase winding, altogether three-phase；
The number of poles of the rotor is m, and m is equal to 4n, 5n or 6n；There are three types of the combining forms of stator, rotor for the i.e. described motor tool, divide
It Wei not 9n/4n, 9n/5n and 9n/6n；
The rotor includes m rotor core and 1 non-magnetic support frame；The rotor core is sector structure, described non-to lead
Magnetic support frame is salient-pole structure, number of teeth m；M tooth of non-magnetic support frame is uniformly distributed, and tooth differs 360 °/m with tooth；It is described
The two neighboring between cog of non-magnetic support frame fixes 1 rotor core；The rotor core is outer with non-magnetic support frame
Face forms 1 smooth continuous cylindrical surface；
The three-phase windings are successively connected in turn, torque are generated, to realize the motor operation.
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| CN201811008802.1A CN109038871B (en) | 2018-08-31 | 2018-08-31 | Switched reluctance motor with segmented rotor |
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| CN201811008802.1A CN109038871B (en) | 2018-08-31 | 2018-08-31 | Switched reluctance motor with segmented rotor |
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| CN109038871B CN109038871B (en) | 2020-01-03 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110299770A (en) * | 2019-07-31 | 2019-10-01 | 上海电力大学 | Four-phase 4N/3N pole winding isolation type fault-tolerant electric excitation double salient motor |
| CN111030327A (en) * | 2019-11-26 | 2020-04-17 | 北京动力机械研究所 | Switched reluctance motor capable of running at high speed |
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| CN101702562A (en) * | 2009-11-09 | 2010-05-05 | 南京航空航天大学 | Non-overlapping winding sectional rotor switched reluctance motor (SRM) |
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| CN110299770A (en) * | 2019-07-31 | 2019-10-01 | 上海电力大学 | Four-phase 4N/3N pole winding isolation type fault-tolerant electric excitation double salient motor |
| CN111030327A (en) * | 2019-11-26 | 2020-04-17 | 北京动力机械研究所 | Switched reluctance motor capable of running at high speed |
| CN111030327B (en) * | 2019-11-26 | 2022-03-15 | 北京动力机械研究所 | Switched reluctance motor capable of running at high speed |
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|---|---|
| CN109038871B (en) | 2020-01-03 |
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