CN101707428A - Three-phase single-section/double-section multiple-pole switching reluctance motor - Google Patents
Three-phase single-section/double-section multiple-pole switching reluctance motor Download PDFInfo
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Abstract
The invention relates to a three-phase single-section/double-section multiple-pole switching reluctance motor. A casing of the motor is arranged on a base, the middle part of the casing is provided with a hanging ring of the motor, a front end cover and a back end cover are respectively arranged at both ends of a rotating shaft, rotors are arranged between the front end cover and the back end cover, an air cover is arranged outside the back end cover, a fan is arranged in the air cover, and a sensor is arranged between the back end cover and the fan or between the back end cover and a second-section rotor; the motor comprises stators and the rotors with a structure of double convex poles, also comprises one section or two sections and can run by a single section or double sections; the iron cores of the stators and the rotors both comprise a single section or two sections, and the lengths and the diameters of the iron cores of the two sections of the stators and the rotors are equal; two sets of concentrated windings or sandwich windings are respectively arranged on two sections of stator teeth, and armature windings on two teeth of the same phase of each set of windings are connected in series or in parallel to form one phase; the magnetic poles of the two sections of stators are aligned, and the difference of the magnetic poles of the two sections of rotors is 1/2 of a rotor polar distance angle; or, the magnetic poles of the two sections of rotors are aligned, and the difference of the magnetic poles of the two sections of stators is 1/2 of a stator polar distance angle; and the invention has the characteristics of high efficacy, high starting torque, easy control and low cost.
Description
Technical field
The present invention relates to a kind of three-phase single hop multiple-pole switching reluctance motor, relate in particular to the three-phase single-section/double-section multiple-pole switching reluctance motor.
Background technology
At present, switched reluctance machines is the switching mode motor of the biconvex utmost point, is wound with concentrated winding on its stator poles; This motor can be divided into single-phase, three-phase, four phase switch reluctance motors by the number of phases, wherein 8/6 structure is in the majority mutually with three-phase 6/4,12/8, four again, that switched reluctance machines has is simple in structure, be easy to make, be easy to speed governing, reliable, not fragile, advantages such as power factor is high, operational efficiency is high, detent torque is big, starting current is little, overload capacity is strong, energy heavy load starting, and good in the permanent power of high speed district wide ranges performance.
Switched reluctance machines is along with the number of phases and number of poles increases, and step angle will reduce, and helps reducing torque pulsation, makes the startability of motor, stable performance good more, and noise is also more little, and the vibration of motor is just more little.Controlling cost but the increase number of phases will increase, increase number of poles the motor pole area is reduced, therefore is to increase the number of phases or increase number of poles all to make electric machine structure complexity, volume increase.
Existing switched reluctance machines has only three-phase 6/4, four phases 8/6, three-phase 12/8, because two-phase 4/2, two-phase 8/4 are arranged in theory, but can not go out product, and this is because they are difficult to self-starting, even auxiliary starter does not reach the operation torque yet.And greater than three-phase 12/8 be exactly three-phase 12/10, five mutually 10/4, five mutually 10/8, seven mutually 14/12, three-phase 24/32,,,,, etc. combination, these combinations have not only increased the number of phases, simultaneously also increased the control difficulty, the increase of the number of phases just equals the increase of cost; Have only two pairs of magnetic poles to enter work done state (as three-phase 12/8) mutually at most and motor is every in commutation process, 1/3 the magnetic pole that promptly has only the total magnetic pole of motor is in work done, what have is even 1/4,1/5 in work done, and this volume that has just formed switched reluctance machines is big, unilateral magnetic force is big, noise and vibration is big, the magnetic energy conversion cause that area reduces, the magnetic energy area is little that Ψ-i surrounded.
The patent of invention that I have applied for, application number 200910117477.7, name is called " double stators and double rotors multiple-pole switching reluctance motor ", the armature number of magnetic poles is 2 times of rotor magnetic pole number in this patented technology, but under the single hop state, can start operation, because it is very little with the operation torque to be not activated moment under the single hop state, thus single hop (separate unit) can not be done, and can only be applicable to two sections (separate unit).
Switched reluctance machines with exchange three phase electric machine with constant power and compare, the regular tap reluctance motor is than exchanging the big seat No. of three phase electric machine, the high performance switch reluctance motor is than exchanging big two seat No. of three phase electric machine, and exchange three phase electric machine and only need the simple operation electric switch that starts, it is low to control cost, and switched reluctance machines is because of belonging to electronic on-off-type, increase the number of phases and just mean the increase electronic switch, control cost thereby increased, its electronic switch control appliance accounts for switched reluctance machines cost 30%～40% according to the number of phases difference of switched reluctance machines, its price is higher more than 3～5 times than the price of common alternating current machine, has therefore influenced applying and popularizing of switched reluctance machines.
At present, countries in the world are all being studied this New-type electric machine of switched reluctance machines, on control technology, adopt single-chip microcomputer control technology, and there has been bigger breakthrough application-specific integrated circuit (ASIC) modularization aspect, but industrialization and action oriented research work relatively lag behind, and especially what progress switched reluctance machines are not had itself.
Summary of the invention
The deficiency that purpose of the present invention is intended to avoid described prior art to exist, but a kind of both three-phases single hop (one section of separate unit) provided through design improvement, but the three-phase single-section/double-section multiple-pole switching reluctance motor of the two sections of three-phase (the two sections of separate units) again; This device has been broken through the difficult problem that the conventional switch reluctance motor can not be made the multipole number of multiple-grooved, and having increased magnetic altogether can area, have high-effect, high start torque, low cost, manageable characteristics.
The solution that realizes the object of the invention is: the three-phase single-section/double-section multiple-pole switching reluctance motor, comprise that motor housing (101) places on the motor base (128), be provided with motor suspension ring (120) at the middle part of motor housing (101), described motor front end housing (116) and back end cover for motor (121) are separately positioned on the two ends of machine shaft (114), between motor front end housing (116) and back end cover for motor (121), be provided with rotor, back end cover for motor (121) outer end is provided with motor fan housing (126), electric motor fan (124) is arranged in the motor fan housing (126), is provided with electronic sensor (123) between back end cover for motor (121) and the electric motor fan (124) or between back end cover for motor (121) and second section rotor; Comprise that further motor is made up of stator, the rotor of biconvex electrode structure, stator core comprises first section stator core (118) and second section stator core (129), and rotor core comprises first section rotor core (119) and second section rotor core (130); It is characterized in that: described stator-rotor iron core is by single hop or two sections compositions, two sections stators, rotor core length and equal diameters; Two covers are housed respectively on two sections stator tooths concentrate winding or layering winding, the armature winding on two teeth of every cover winding same phase is in series or in parallel to form a phase; Two sections magnetic pole of the stator alignment, two-stage rotor magnetic pole mutual deviation 1/2 rotor pole elongation; Or the alignment of two-stage rotor magnetic pole, two sections magnetic pole of the stator mutual deviation 1/2 stator poles elongation.
Described first section stator core (118) comprises first section stator yoke (102), first section magnetic pole of the stator (104) and first section stator armature magnetic pole winding (103); Second section stator core (129) comprises second section stator yoke (108), second section magnetic pole of the stator (110) and second section magnetic pole of the stator winding (109).
Described first section rotor core (119) comprises first section rotor yoke (105) and first section rotor magnetic pole (106); Second section rotor core (130) comprises second section rotor yoke (111) and second section rotor magnetic pole (112); Be respectively equipped with axis hole (107) and (113) of band keyway on first section rotor core (119) and the second section rotor core (130).
Described stator poles is 3 times of rotor number of poles single hop, and the number of poles of rotor is even number combination, promptly 6/2,12/4,18/6,24/8,30/10,36/12,42/14,,,,,, the combination of Ns/Nr.
The described electronic sensor (123) that between back end cover for motor (121) and electric motor fan (124), is provided with can be built-in also can be external.
Described single hop stator casing is divided into one, every shell one stator one rotor; Two sections stator casings are divided into one, one two rotor of every shell two stators; Stator casing is divided into two, every shell one stator, one two rotor.
Described two stators are connected in one or two stators are installed on the motor cabinet (128).
Described armature can be divided into external armature formula (stator armature) and interior armature type (armature rotor), but rotor internal rotor and external rotor running again; The external armature formula can only be done the internal rotor operation; But interior armature type can move again the internal rotor operation by external rotor; Wherein the external armature sensor signal is taken from internal rotor, and interior armature sensor signal is taken from external rotor.
Described stator core is assembled through fanning strip by the number of magnetic poles yoke multistage that is built in sections.
The present invention compared with prior art has following advantage:
1, because the employing stator poles is 3 times of rotor number of poles, and the number of poles of rotor is the even number combination, broken through the conventional switch reluctance motor and can not make the difficult problem of the multipole number of multiple-grooved, can be fabricated to 6/2,12/4,18/6,24/8,30/10,36/12,42/14,48/16,,,,,, N
s/ N
rThe motor of the utmost point etc., having increased magnetic altogether can area.
2, owing on two sections stator tooths concentrated winding of two covers or layering winding are housed respectively, promptly no matter how many utmost points are stator poles have, single hop can only three-phase, two sections every section stators have only three-phase, two sections totally six phases, but every phase winding can one the tunnel series connection or multiple series series, also can one tunnel parallel connection or multiple series series output, therefore, requirement of root a tree name motor technology and power capacity, rotating speed change number of poles and winding connection flexibly and comfortably.
3, no matter the electric machine rotor number of poles what, the number of phases can only be a three-phase, and the number of poles of motor is determined that by the number of poles of rotor after the number of poles of rotor was determined, the number of poles of stator was 3 times of rotor number of poles; Tripping force distance and operation torque all be the normal switch reluctance motor during as i.e. one section electric motor starting or the operation of single hop, and only tripping force is apart from big under two sections states, and it is also big to move torque, and two sections effect is more remarkable.
4, owing to adopt every section stator to have only three-phase, two sections totally six phases, and the setting of alignment of two sections magnetic pole of the stator or two-stage rotor alignment can realize reducing to vibrate with noise, reduces unilateral magnetic force, reduces the magnetic energy loss, increases the magnetic energy area, increase the purpose that magnetic altogether can the zone.
When 5, two sections magnetic pole of the stator alignd, two-stage rotor magnetic pole mutual deviation 1/2 rotor pole elongation, the stator alignment thereof of this moment were easy to heat radiation, reduce heat load; Rotor does not line up mode and is easy to reduce the mutual interference of rotor magnetic field boundary phase.During the two-stage rotor alignment, two sections stator mutual deviation 1/2 stator poles elongation, the stator of this moment does not line up mode and is easy to reduce the mutual interference of stator magnet field boundary phase; The rotor alignment thereof is easy to accomplish mechanical static balance and dynamic balancing.
6, the present invention is because the number of phases is fixed, and therefore, no matter how number of poles changes, and the number of magnetic poles of armature is 3 times of rotor magnetic pole number, and the rotor number of poles all is an even number; If then just opposite at interior armature state, the number of magnetic poles of interior armature is 3 times of external rotor magnetic poles number.
7, speed-regulating range width of the present invention, adjusting speed accuracy height, noise is little, vibration is little, overload capacity is strong; Simultaneously, manufacture method of the present invention is many, and control method has multiple comprising mechanical method; To adapt to the needs of different electromechanical integration.
Description of drawings
Fig. 1 is a three-phase single hop overall structure connection diagram
Fig. 2 is the two section of a three-phase overall structure connection diagram
Fig. 3 is the schematic diagram of three-phase SRM-12/4
Fig. 3 a is the schematic diagram of first section rotor alignment of motor
Fig. 3 b is second section schematic diagram that rotor does not line up of motor
Fig. 4 is the schematic diagram of armature in the three-phase SRM-4/12
Fig. 4 a is the schematic diagram of first section rotor magnetic pole alignment of interior electric motor with armature
Fig. 4 b is second section schematic diagram that the rotor magnetic pole does not line up of interior electric motor with armature
Fig. 5 is the schematic diagram that is used to make dovetail overlapping mode when stator core adopts fanning strip when big-and-middle-sized
The state diagram of dovetail overlap joint when Fig. 5 a is stator core employing fanning strip
Fig. 5 b is the partial enlarged drawing of Fig. 5 a
Among the figure, the 101-motor housing, first section stator yoke of 102-, first section magnetic pole of the stator winding of 103-, first section magnetic pole of the stator of 104-, first section rotor yoke of 105-, first section rotor magnetic pole of 106-, first section rotor shaft hatch of 107-, second section stator yoke of 108-, second section magnetic pole of the stator winding of 109-, second section magnetic pole of the stator of 110-, second section rotor yoke of 111-, second section rotor magnetic pole of 112-, second section rotor shaft hatch of 113-, the 114-motor shaft, 115-motor fore bearing, 116-motor front end housing 117-electric motor end cap is the Luo bar fixedly, first section stator core of 118-, first section rotor core of 119-, 120-motor suspension ring, the 121-back end cover for motor, 122-motor rear bearing, the 123-electronic sensor, the 124-electric motor fan, 125-motor non-shaft stretching end, the 126-motor fan housing, 127-motor base fixing hole, the 128-motor base, second section stator core of 129-, second section rotor core of 130-, 131-fanning strip dovetail groove salient pole, 132-fanning strip dovetail groove groove; The tail end of the head end of A, B, each phase of C-armature winding, X, Y, each phase of Z-armature winding; The corresponding motor section array of first bit digital of the numeral 101～104,201～204 in winding number, middle 0 expression separatrix, the 3rd bit digital is represented the winding number.
Among Fig. 3, Fig. 4, A101-A is an A phase head end, and X101-X is the tail end of A phase; First section stator armature winding of 101-A is the 1st magnetic pole winding mutually, and 104-A is the 4th winding mutually.
B101-B is a B phase head end, and Y101-Y is the tail end of B phase; First section stator armature winding of 101-B is the 1st magnetic pole winding mutually, and 104-B is the 4th winding mutually.
C101-C is a C phase head end, and Z101-Z is the tail end of C phase; First section stator armature winding of 101-C is the 1st magnetic pole winding mutually, and 104-C is the 4th winding mutually.
A201-A is an A phase head end, and X201-X is the tail end of A phase; Second section stator armature winding of 201-A is the 1st magnetic pole winding mutually, and 204-A is the 4th winding mutually.
B201-B is a B phase head end, and Y201-Y is the tail end of B phase; Second section stator armature winding of 201-B is the 1st magnetic pole winding mutually, and 204-B is the 4th winding mutually.
C201-C is a C phase head end, and Z201-Z is the tail end of C phase; Second section stator armature winding of 201-C is the 1st magnetic pole winding mutually, and 204-C is the 4th winding mutually.
Interior armature structure numbering: 201-motor housing, first section outer (stator or rotor) yoke of 202-, first section outer (stator or rotor) magnetic pole of 203-, armature magnetic pole in first section of the 204-, armature slot is carved in first section of the 205-, armature magnetic pole winding in first section of the 206-, armature axis hole in first section of the 207-, second section outer (stator or rotor) yoke of 208-, second section outer (stator or rotor) magnetic pole of 209-, armature magnetic pole in second section of the 210-, second section rotor of 211-carved, armature magnetic pole winding in second section of the 212-, armature axis hole in second section of the 213-; The head end of A, B, each phase of C-armature winding, the tail end of X, Y, each phase of Z-armature winding, the corresponding motor section array of first bit digital of the numeral 101～104,201～204 in winding number, middle 0 expression separatrix, the 3rd bit digital is represented the winding number.
Embodiment
Below in conjunction with drawings and Examples the present invention is further described
With reference to Fig. 1, Fig. 2, a kind of three-phase single-section/double-section multiple-pole switching reluctance motor among the figure, comprise that motor housing 101 places on the motor base 128, be provided with motor suspension ring 120 at the middle part of motor housing 101, motor front end housing 116 and back end cover for motor 121 are separately positioned on the two ends of machine shaft 114, between motor front end housing 116 and back end cover for motor 121, be provided with rotor, back end cover for motor 121 outer ends are provided with motor fan housing 126, in motor fan housing 126, be provided with electric motor fan 124, be provided with electronic sensor 123 between back end cover for motor 121 and the electric motor fan 124 or between back end cover for motor 121 and second section rotor, transducer 123 can be built-in also can be external, can be built between rear end cap 121 and the second section rotor.The stator, the rotor that further comprise the biconvex electrode structure that motor is formed by silicon steel plate stacking are formed; Stator core comprises first section stator core 118 and second section stator core 129, and rotor core comprises first section rotor core 119 and second section rotor core 130.Stator-rotor iron core is by single hop or two sections compositions, two sections stators, rotor core length and equal diameters; Stator core is one section by single hop and forms (as shown in Figure 1), can two sections be two sections compositions again, forms (as shown in Figure 2) by first section stator core 118 and second section stator core 129 in the time of two sections; Wherein each section can be used as the three-phase multiple-pole switching reluctance motor of single hop.Two-stage rotor same machine shaft 114, two shells two stators altogether is connected in one, or two stators are installed on the motor cabinet 128.The single hop stator casing is divided into one, every shell one stator one rotor; Two sections stator casings are divided into one, every shell two stators, one two rotor; Stator casing is divided into two, every shell one stator, one two rotor.
With reference to Fig. 3, Fig. 4, two covers are housed respectively on two sections stator tooths among the figure concentrate winding or layering winding, the armature winding on two teeth of every cover winding same phase is in series or in parallel to form a phase.Stator core is one section by single hop and forms; Can two sections be two sections compositions again, form by first section stator core 118 and second section stator core 129 in the time of two sections; First section stator core 118 comprises first section stator yoke 102, first section magnetic pole of the stator 104 and first section stator armature magnetic pole winding 103; Second section stator core 129 comprises second section stator yoke 108, second section magnetic pole of the stator 110 and second section stator armature magnetic pole winding 109.Two sections rotor cores are made up of first section rotor core 119 and second section rotor core 130; First section rotor core 119 comprises that first section rotor yoke 105 and 106, the second sections rotor cores 130 of first section rotor magnetic pole comprise second section rotor yoke 111 and second section rotor magnetic pole 112.First section rotor core 119 and second section rotor core 130 are provided with first section rotor shaft hatch 107 (seeing shown in Fig. 3 a) and the second section rotor shaft hatch 113 (seeing shown in Fig. 3 b) of being with keyway.Because the number of phases fixes, stator poles is 3 times of rotor number of poles single hop, and the number of poles of rotor is the even number combination, promptly 6/2,12/4,18/6,24/8,30/10,36/12,42/14,48/16,,,,, N
s/ N
rCombination.
Rotor can be divided into internal rotor and external-rotor-type, when adopting external-rotor-type, armature is fabricated to internal stator by the external stator conversion, with manufacturing and the lead-out wire that makes things convenient for armature winding; The number of poles of internal stator of this moment must be the number of 3 times of external rotor numbers of poles, and is necessary for even number, promptly 2/6,4/12,6/18,8/24,10/30,12/36,14/42,16/48,,,,,, N
r/ N
sCombination.
Rotor also is divided into single hop or is divided into two sections.
The present invention adopts every section stator to have only three-phase, two sections totally six phases.The alignment schemes of two sections rotors has two kinds, and a kind of is two sections magnetic pole of the stator alignment and rotor magnetic pole does not line up; Another kind is two-stage rotor magnetic pole alignment and magnetic pole of the stator does not line up.As shown in Figure 1, two sections stator core magnetic pole paragraph alignment; Two-stage rotor does not all line up; Two rotor mutual deviations, 1/2 rotor pole elongation, this moment, the stator alignment thereof was easy to heat radiation, reduced heat load, and rotor does not line up mode and is easy to reduce rotor field phase mutual interference.Another kind then is that two rotors all align and two sections stator mutual deviation 1/2 pole span angles, and stator does not line up mode and is easy to reduce the mutual interference of stator field phase at this moment, and the rotor alignment thereof is easy to accomplish mechanical static balance and dynamic balancing.
Armature can be divided into external armature formula (stator armature) and interior armature type (armature rotor), but internal rotor and external rotor running again; The external armature formula can only be done the internal rotor operation; But interior armature type can move again internal rotor operation (as shown in Figure 4) by external rotor; Wherein the external armature sensor signal is taken from internal rotor, and interior armature sensor signal is taken from external rotor.But but external armature not only electric drive but also Mechanical Driven; Interior armature needs special electric drive mode and mechanical actuation device.
When the present invention is big-and-middle-sized, can adopt the shared machine shaft 114 of two-stage rotor, stator casing is divided into two, every shell one stator, and two stators are connected in one, or two stators are installed on a mode on the support and make.
With reference to Fig. 5, stator core adopts the dovetail groove salient pole 131 of fanning strip among the figure when silicon steel sheet area is greater than the silicon steel sheet breadth when making large and middle size motor, and stator core adopts the dovetail groove groove 132 of fanning strip when the silicon steel sheet area is greater than the silicon steel sheet breadth when making large and middle size motor; Simultaneously with stator core by number of magnetic poles be built in sections yoke multistage fanning strip and cross-laminated assembling.
Claims (10)
1. three-phase single-section/double-section multiple-pole switching reluctance motor, comprise that motor housing (101) places on the motor base (128), be provided with motor suspension ring (120) at the middle part of motor housing (101), motor front end housing (116) and back end cover for motor (121) are separately positioned on the two ends of machine shaft (114), between motor front end housing (116) and back end cover for motor (121), be provided with rotor, back end cover for motor (121) outer end is provided with motor fan housing (126), electric motor fan (124) is arranged in the motor fan housing (126), is provided with electronic sensor (123) between back end cover for motor (121) and the electric motor fan (124) or between back end cover for motor (121) and second section rotor; Comprise that further motor is made up of stator, the rotor of biconvex electrode structure, stator core comprises first section stator core (118) and second section stator core (129), and rotor core comprises first section rotor core (119) and second section rotor core (130); It is characterized in that: described stator-rotor iron core is by single hop or two sections compositions, two sections stators, rotor core length and equal diameters; Two covers are housed respectively on two sections stator tooths concentrate winding or layering winding, the armature winding on two teeth of every cover winding same phase is in series or in parallel to form a phase; Two sections magnetic pole of the stator alignment, two-stage rotor magnetic pole mutual deviation 1/2 rotor pole elongation; Or the alignment of two-stage rotor magnetic pole, two sections magnetic pole of the stator mutual deviation 1/2 stator poles elongation.
2. three-phase single-section/double-section multiple-pole switching reluctance motor according to claim 1 is characterized in that: described first section stator core (118) comprises first section stator yoke (102), first section magnetic pole of the stator (104) and first section stator armature magnetic pole winding (103); Second section stator core (129) comprises second section stator yoke (108), second section magnetic pole of the stator (110) and second section stator armature magnetic pole winding (109).
3. three-phase single-section/double-section multiple-pole switching reluctance motor according to claim 1 is characterized in that: described first section rotor core (119) comprises first section rotor yoke (105) and first section rotor magnetic pole (106); Second section rotor core (130) comprises second section rotor yoke (111) and second section rotor magnetic pole (112); Be respectively equipped with axis hole (107) and (113) of band keyway on first section rotor core (119) and the second section rotor core (130).
4. three-phase single-section/double-section multiple-pole switching reluctance motor according to claim 1, it is characterized in that: described stator poles is 3 times of rotor number of poles single hop, and the number of poles of rotor is even number combination, promptly 6/2,12/4,18/6,24/8,30/10,36/12,42/14,,,,,, N
s/ N
rCombination.
5. three-phase single-section/double-section multiple-pole switching reluctance motor according to claim 1 is characterized in that: the described electronic sensor (123) that between back end cover for motor (121) and electric motor fan (124), is provided with can be built-in also can be external.
6. three-phase single-section/double-section multiple-pole switching reluctance motor according to claim 1 is characterized in that: described single hop stator casing is divided into one, every shell one stator one rotor; Two sections stator casings are divided into one, every shell two stators, one two rotor; Stator casing is divided into two, every shell one stator, one two rotor.
7. three-phase single-section/double-section multiple-pole switching reluctance motor according to claim 1 is characterized in that: described two stators are connected in one, or two stators are installed on the motor cabinet (128).
8. three-phase single-section/double-section multiple-pole switching reluctance motor according to claim 1 is characterized in that: described armature can be divided into external armature formula and interior armature type, but internal rotor and external rotor running again, and the external armature formula can only be done the internal rotor operation; But interior armature type can move again the internal rotor operation by external rotor; Wherein the external armature sensor signal is taken from internal rotor, and interior armature sensor signal is taken from external rotor.
9. the described three-phase single-section/double-section multiple-pole switching reluctance motor of root a tree name claim 1 is characterized in that: but but described external armature formula not only electric drive but also Mechanical Driven, interior armature needs special electric drive mode and mechanical actuation device.
10. three-phase single-section/double-section rotor multiple-pole switching reluctance motor according to claim 1 is characterized in that: stator core is assembled through fanning strip by the number of magnetic poles yoke multistage that is built in sections.
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| CN 200910117566 CN101707428B (en) | 2009-11-06 | 2009-11-06 | Three-phase single-section/double-section multiple-pole switching reluctance motor |
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| CN 200910117566 CN101707428B (en) | 2009-11-06 | 2009-11-06 | Three-phase single-section/double-section multiple-pole switching reluctance motor |
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| JP2000184672A (en) * | 1998-12-18 | 2000-06-30 | Yunitekku Denka Kogyo Kk | Four-phase reluctance motor |
| CN101483370B (en) * | 2008-01-11 | 2010-12-08 | 张世清 | Switched reluctance motor with double stators and double rotors |
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