CN201504159U - Double-stator-rotor multiple pole switch reluctance motor - Google Patents

Double-stator-rotor multiple pole switch reluctance motor Download PDF

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CN201504159U
CN201504159U CN2009201440817U CN200920144081U CN201504159U CN 201504159 U CN201504159 U CN 201504159U CN 2009201440817 U CN2009201440817 U CN 2009201440817U CN 200920144081 U CN200920144081 U CN 200920144081U CN 201504159 U CN201504159 U CN 201504159U
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stator
rotor
section
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stators
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张世清
张红梅
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Abstract

The utility model relates to a double-stator-rotor multiple pole switch reluctance motor which comprises a stator and a rotor which comprise overlaid silicon steel sheets and are in a double-salient pole structure; a stator-rotor iron core comprises two sections, and the length and the diameter of the two sections of stator-rotor iron core are equal; each section of stator tooth is provided with two sets of centralized windings or layered windings; the armature windings on the two teeth on the same phase of each set of winding are serially connected or parallelly connected into one phase; the motor is characterized in that the two sections of stator magnetic pole are in alignment, and a rotor magnetic pole and the stator form a one-second stator pole angle; or the two sections of rotor are in alignment, and form a one-second stator pole angle. Because the number of stator poles is twice of the number of rotor poles, and the number of the stator-rotor poles is in even groups. Therefore, the double-stator-rotor multiple pole switch reluctance motor breaks through the difficulty that the traditional switch reluctance motor cannot manufacture a plurality of slots and poles, and is characterized by low cost, high efficiency and easy control.

Description

The double stators and double rotors multiple-pole switching reluctance motor
Technical field
The utility model relates to a kind of switched reluctance machines, relates in particular to a kind of double stators and double rotors 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 divides by the number of phases can be divided into 3 phases, 4 phase and heterogeneous switched reluctance machines, wherein 6/4,12/8,4 phases, 8/6 structure is in the majority mutually with 3 again, that switched reluctance machines has is simple in structure, be easy to make, be easy to speed governing, reliable, not fragile, power factor is high, operational efficiency is high, detent torque is big, starting current is little, overload capacity is strong, can heavy load starting etc. advantages, the while is good in the permanent power of high speed district wide ranges performance.
Because switched reluctance machines increasing along with the number of phases and number of poles, step angle will reduce, thereby help reducing changeing apart from pulsation, make the startability of motor, stable performance good more, noise is also more little, and the vibration of motor is just more little, will increase and controls cost but increase the number of phases, increase number of poles the motor pole area is reduced, therefore increasing the number of phases still increases number of poles electric machine structure complexity, volume will be increased.
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 switching magnetic-resistance electricity, its price is higher more than 3~5 times than the price of common alternating current machine, has therefore influenced promoting the use of and popularizing of switched reluctance machines.
At present, single-chip microcomputer control technology all at this New-type electric machine of research switched reluctance machines, is all adopted in countries in the world on control technology, make it that big breakthrough arranged, but what progress switched reluctance machines is not had itself.
The utility model content
Technical problem to be solved in the utility model provides a kind of low cost, high-effect, manageable double stators and double rotors multiple-pole switching reluctance motor.
For addressing the above problem, a kind of double stators and double rotors multiple-pole switching reluctance motor described in the utility model comprises the motor housing that places on the base, stator, the rotor that motor shaft reaches the biconvex electrode structure that becomes by silicon steel plate stacking; Described motor housing middle part is provided with the motor suspension ring; The two ends of described motor shaft are respectively equipped with front end housing, rear end cap, are provided with described rotor between this front end housing and the rear end cap; Described rear end cap peripheral hardware fan housing is established aft-fan in this fan housing; Described stator-rotor iron core is by two sections compositions, and two sections stators, rotor core length and equal diameters; Two covers are housed respectively on described two sections stator tooths concentrate winding or layering winding, armature winding on two teeth of every cover winding same phase is in series or in parallel to form a phase, it is characterized in that: described two sections magnetic pole of the stator alignment, rotor magnetic pole and stator difference are opened 1/2 stator polar angle, or the two-stage rotor alignment, two sections stator differences are opened 1/2 stator polar angle:
τ Ns = 2 π N s × 2 In the formula: τ NsFor stator poles apart from, π=180 °, N sBe stator poles.
Described stator core is made up of first section stator core and second section stator core; Described first section stator core comprises first section stator yoke, first section magnetic pole of the stator and first section stator armature magnetic pole winding; Described second section stator core comprises second section stator yoke, second section magnetic pole of the stator and second section stator armature magnetic pole winding.
Described rotor core is made up of first section rotor core and second section rotor core, and this first section rotor core and second section rotor core are equipped with the rotor shaft hatch that has keyway; Described first section rotor core comprises first section rotor magnetic pole, first section rotor yoke; Described second section rotor core comprises second section rotor magnetic pole, second section rotor yoke.
Described stator poles is 2 times of rotor number of poles, and the number of poles of rotor is even number combination, promptly 4/2,8/4,12/6,16/8,20/10,24/12,28/14,32/16,36/18,40/20,,,,,, N s/ N rCombination.
Described stator casing is divided into two, every shell one stator.
The shared motor shaft of described two-stage rotor.
Described two stators are connected in one, or two stators are installed on the support.
Be provided with transducer between described aft-fan and the described rear end cap or between described second section rotor and the described rear end cap.
Described rotor can be divided into internal rotor and external-rotor-type.
Described stator core is by be built in sections yoke multistage fanning strip assembling of number of magnetic poles.
The utility model compared with prior art has the following advantages:
1, since in the utility model stator poles be 2 times of rotor number of poles, and the number of poles of rotor is the even number combination, therefore, the utility model has been broken through the difficult problem that the conventional switch reluctance motor can not be made the multipole number of multiple-grooved, can be fabricated to 4/2,8/4,12/6,16/8,,,,,, N s/ N rThe motor of the utmost point etc.
2, owing on two sections stator tooths concentrated winding of two covers or layering winding are housed respectively in the utility model, promptly no matter how many utmost points are stator poles have, every section stator has only two-phase, two sections totally 4 phases, but every phase winding can one the tunnel series connection or multiple series series, also can one tunnel parallel connection or multi-channel parallel 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, existing switched reluctance machines has only 3 phases 6/4,4,8/6,3 phases 12/8 mutually.Because have 2 mutually 4/2,2 mutually 8/4 in theory, but can not go out product, this is because they can not self-starting, even auxiliary starter does not reach the operation torque yet.And greater than 3 mutually 12/8 be exactly three-phase 12/10,5 mutually 10/4,5 mutually 10/8,7 mutually 14/12,3 mutually 24/32,,,,, etc. combination, these combinations have not only increased the number of phases, have also increased the control difficulty, and the increase number of phases increases cost exactly; Have only two pairs of magnetic poles to enter work done state (as 3 phases 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 reason that area reduces, the magnetic energy product area is little that Ψ-i surrounded.
The utility model then adopts every section stator to have only two-phase, two sections totally 4 phases, and two sections magnetic pole of the stator alignment, rotor magnetic pole and stator differences are opened 1/2 stator polar angle, or the mode that 1/2 stator polar angle is opened in two-stage rotor alignment, two sections stator differences is provided with, thereby realized reducing to vibrate with noise, reduces unilateral magnetic force, reduces the magnetic energy loss, increases the magnetic energy area, increases the purpose that magnetic altogether can the zone.
4, when two sections magnetic pole of the stator alignd in the utility model, rotor magnetic pole and stator difference were opened 1/2 stator polar angle, and the stator alignment thereof was easy to heat radiation, reduced heat load this moment: rotor does not line up mode and is easy to reduce the mutual interference of rotor magnetic field boundary phase.
5, when two-stage rotor in the utility model alignd, two sections stator differences were opened 1/2 stator polar angle, and stator does not line up mode and is easy to reduce the mutual interference of stator magnet field boundary phase at this moment; The rotor alignment thereof is easy to accomplish mechanical static balance and dynamic balancing.
6, the utility model is because the number of phases is few, and therefore, not only equipment volume is little, and low cost of manufacture, easy to control.
7, with the asymmetric electronic switch schematic diagram of the motor windings of 4 phase SRD-8/4 of the present utility model (Fig. 4 c) respectively with existing 4 mutually the SRD-8/6 schematic diagram (Fig. 4 a), switched reluctance motor with double stators and double rotors (patent No. 200820028230.9) 4 phase SRD-8/6 (Fig. 4 b) compare, the used electronic power element of the utility model has been saved half as can be seen, be equivalent to original technology 4 parts number of 8/6 mutually, therefore, the utility model can make the cost of control section reduce by one times.
8, with the motor torque ripple composite diagram (Fig. 5 d) of SRM-8/4 of the present utility model and the torque waveform of first section in switched reluctance motor with double stators and double rotors (patent No. 200820028230.9) SRM-8/6 motor---be prior art 4 mutually the torque waveform of SRM-8/6 motor (Fig. 5 a), the torque waveform (Fig. 5 b) of second section in switched reluctance motor with double stators and double rotors SRM-8/6 motor, the synthetic waveform (Fig. 5 c) of switched reluctance motor with double stators and double rotors compare, and the synthetic torque of the utility model has increased much as can be seen.
9, through real-world operation test, the utility model speed-regulating range width, adjusting speed accuracy height, noise is little, vibration is little.
Description of drawings
Below in conjunction with accompanying drawing embodiment of the present utility model is described in further detail.
Fig. 1 is the schematic diagram of the utility model SRM-8/4; Wherein scheming a is first section rotor alignment schematic diagram of motor, and figure b is that second section rotor of motor do not line up schematic diagram.
Fig. 2 is the schematic diagram of the utility model SRM-12/6; Wherein scheming a is first section rotor magnetic pole alignment schematic diagram of motor, and figure b is that second section rotor magnetic pole of motor do not line up schematic diagram.
Fig. 3 is an overall structure schematic diagram of the present utility model.
Fig. 4 is the asymmetric electronic switch control principle of the utility model figure; Wherein scheming a is existing 4 phase SRD-8/6 schematic diagrams; Figure b is 4 phase SRD-8/6 schematic diagrams of switched reluctance motor with double stators and double rotors; Figure c is the utility model 4 phase SRD-8/4 control principle figure.
Fig. 5 is the synthetic comparison diagram of switched reluctance motor with double stators and double rotors and torque pulsation of the present utility model; Wherein scheming a is the torque waveform (also being the torque waveform of 4 phase SRM-8/6 motors of prior art) of first section in switched reluctance motor with double stators and double rotors SRM-8/6 motor, figure b is the torque waveform of second section in switched reluctance motor with double stators and double rotors SRM-8/6 motor, figure c is the synthetic waveform of switched reluctance motor with double stators and double rotors, and figure d is the torque composite diagram of the utility model SRM-8/4.
Fig. 6 is the structural representation when big-and-middle-sized for the utility model is used to make; Wherein scheming a is overall structure figure, and figure b is the dovetail groove enlarged drawing of segmentation overlap.
Among the figure: second section rotor core 17-of first section stator armature magnetic pole of first section rotor yoke 6-of first section rotor magnetic pole 5-of first section magnetic pole of the stator 4-of first section stator yoke 3-of 1-motor housing 2-winding 7-second section rotor yoke 12-of second section rotor magnetic pole 11-of second section magnetic pole of the stator 10-of second section stator yoke 9-of rotor shaft hatch 8-second section stator armature magnetic pole, second section stator core 16-of first section rotor core 15-of first section stator core 14-of winding 13-motor suspension ring 18-motor shaft 19-front end housing 20-rear end cap 21-aft-fan 22-fan housing 23-base 24-transducer 25-rectification is the groove A of the dovetail groove of the salient pole 27-stator core part charge of the dovetail groove of ripple control power supply 26-stator core part charge gradually, B, C, the head end W of each phase of D-armature winding, X, Y, the tail end VT-power controlling pipe IGBT VD-fly-wheel diode FWD of each phase of Z-armature winding
Embodiment
A kind of double stators and double rotors multiple-pole switching reluctance motor comprises the motor housing 1 that places on the base 23, stator, the rotor (referring to Fig. 3) that motor shaft 18 reaches the biconvex electrode structure that becomes by silicon steel plate stacking.Motor housing 1 middle part is provided with motor suspension ring 17; The two ends of motor shaft 18 are respectively equipped with front end housing 19, rear end cap 20, are provided with rotor between this front end housing 19 and the rear end cap 20; Rear end cap 20 peripheral hardware fan housings 22 are established aft-fan 21 in this fan housing 22; Be provided with transducer 24 between aft-fan 21 and the rear end cap 20; Stator-rotor iron core is by two sections compositions, and 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.
Transducer 24 also can be located between second section rotor and the rear end cap 20.
Stator core is made up of first section stator core 13 and second section stator core 15.First section stator core 13 comprises first section stator yoke 2, first section magnetic pole of the stator 3 and first section stator armature magnetic pole winding 6; Second section stator core 15 comprises second section stator yoke 8, second section magnetic pole of the stator 9 and second section stator armature magnetic pole winding 12.Rotor core is made up of first section rotor core 14 and second section rotor core 16, and this first section rotor core 14 and second section rotor core 16 are equipped with the rotor shaft hatch 7 that has keyway.First section rotor core 14 comprises first section rotor magnetic pole 4, first section rotor yoke 5; Second section rotor core 16 comprises second section rotor magnetic pole 10, second section rotor yoke 11.Stator poles is 2 times of rotor number of poles, and the number of poles of rotor is even number combination, promptly 4/2,8/4,12/6,16/8,20/10,24/12,28/14,32/16,36/18,40/20,,,,,, N s/ N rCombination.
As shown in Figure 1, two sections stator core magnetic pole paragraph alignment; Two-stage rotor does not all line up.First section stator core 13A phase magnetic pole vertically aligns with first section rotor core 14 magnetic pole, and at this moment first section rotor core 14 magnetic pole is benchmark with first section stator core 13A phase pole center line, is in a complete mutually aligned condition; Second section rotor core 16 magnetic pole are not lining up state (in the two poles of the earth in the heart entirely, promptly half of first section stator core 13 number of magnetic poles alignd with rotor and second half entirely is dummy status, an also i.e. alignment entirely mutually, and another is complete mutually empty---the interpolar state), and the location of second section rotor magnetic pole 10 is and second section magnetic pole of the stator, 9 mutual deviations, 1/2 stator poles elongation:
Promptly τ Ns = 2 π N s × 2 As SRM8/4
Figure G2009201440817D00062
In the formula: τ NsFor stator poles apart from, π=180 °, N SBe stator poles.At this moment second section rotor is not all lining up state, is in the commutation process yet.
As shown in Figure 2, the segmentation of two-stage rotor core magnetic pole is all alignd; Two sections stators are not all lining up state.First section rotor core 14 magnetic pole with its center line vertically with first section stator core 13 1 mutually magnetic pole align, at this moment first section rotor core 14 magnetic pole is in full aligned condition, second section rotor core 16 magnetic pole are in the state that do not line up entirely (interpolar state---i.e. aligning of first section rotor core 14 number of magnetic poles, and another is dummy status mutually entirely); And the location of first section magnetic pole of the stator 3 and second section magnetic pole of the stator 9 mutual deviations 1/2 stator poles elongation:
Promptly τ Ns = 2 π N s × 2 As SRM12/6
Figure G2009201440817D00064
In the formula: τ NsFor stator poles apart from, π=180 °, N sBe stator poles.At this moment second section rotor portion is not lining up state, is in the commutation process yet.
Wherein: the A among Fig. 1, Fig. 2, B, C, D both be expressed as the head end that winding phase sequence number is also represented winding, and W, X, Y, Z represent the tail end of each phase of armature winding; First digit 1 in the numeral 101~106 behind the letter is first section armature winding, and 2 is second section armature winding, and middle 0 is separatrix, and the 3rd bit digital is represented armature homophase magnetic pole number of poles number.As:
A101:A is an A phase head end, and W101:W is the tail end of A phase.101 is first section stator armature winding A, the first magnetic pole winding mutually, and 106 is A the 6th winding mutually.
B201:B is a B phase head end, and X201:X is the tail end of B phase.201 is second section stator armature winding B, the first magnetic pole winding mutually, and 206 is B the 6th winding mutually.
C101:C is a C phase head end, and Y101:Y is the tail end of C phase.101 is first section stator armature winding C, the first magnetic pole winding mutually, and 106 is C the 6th winding mutually.
D201:D is a D phase head end, and Z201:Z is the tail end of Z phase.201 is second section stator armature winding D, the first magnetic pole winding mutually, and 106 is D the 6th winding mutually.
VT among Fig. 4 is power controlling pipe IGBT, and VD is fly-wheel diode FWD; First bit digital in 101~108,201~208 is corresponding to motor section array control switch, middle 0 expression separatrix, the 3rd bit digital is represented the number of power tube and fly-wheel diode, wherein the odd number of number represents to be connected in the cathode power supply V+ of DC power supply, and the numeral of even number is connected in the negative power supply V-of DC power supply.
Rotor in the utility model can be divided into internal rotor and external-rotor-type.When adopting external-rotor-type, the conversion of armature system external stator is fabricated to internal stator, with manufacturing and the lead-out wire that makes things convenient for armature winding; The number of poles of the internal stator of this moment must be 2 times a number of external rotor number of poles, and is necessary for even number, and rotor also is two sections.
When the utility model when being big-and-middle-sized, can adopt the shared motor shaft 18 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 23 and make.Simultaneously with stator core by the number of magnetic poles yoke multistage fanning strip that is built in sections, and cross-laminated assembling makes the groove 27 of salient pole 26 and the dovetail groove of stator core part charge of the dovetail groove of stator core part charge be complementary (referring to Fig. 6).
When the utility model is equipped with electronic sensor 24 on motor shaft 18, then be the electric drive mode.When the utility model adopts the mechanical type driving apparatus (patent No. 200720306656.1) of the switched reluctance machines of applying in person, it then is the Mechanical Driven mode, this mode application principle by I the application switched reluctance motor with double stators and double rotors (patent No. 200820028230.9) file in Fig. 5, change Fig. 6, Fig. 8 is converted to the Fig. 1 in mechanical type driving apparatus (patent No. 200720306656.1) file of utility model patent switched reluctance machines of my application, Fig. 2, Fig. 3 gets final product, therefrom as can be seen, distribute slip ring and distribute brush holder to lack two groups, make its structure more succinct, the structure that is become single hop by two sections structures is controlled two sections motor.

Claims (10)

1. a double stators and double rotors multiple-pole switching reluctance motor comprises the motor housing (1) that places on the base (23), stator, the rotor that motor shaft (18) reaches the biconvex electrode structure that becomes by silicon steel plate stacking; Described motor housing (1) middle part is provided with motor suspension ring (17); The two ends of described motor shaft (18) are respectively equipped with front end housing (19), rear end cap (20), are provided with described rotor between this front end housing (19) and the rear end cap (20); Described rear end cap (20) peripheral hardware fan housing (22) is established aft-fan (21) in this fan housing (22); Described stator-rotor iron core is by two sections compositions, and two sections stators, rotor core length and equal diameters; Two covers are housed respectively on described two sections stator tooths concentrate winding or layering winding, armature winding on two teeth of every cover winding same phase is in series or in parallel to form a phase, it is characterized in that: described two sections magnetic pole of the stator alignment, rotor magnetic pole and stator difference are opened 1/2 stator polar angle, or the two-stage rotor alignment, two sections stator differences are opened 1/2 stator polar angle:
τ Ns = 2 π N s × 2 In the formula: τ NsFor stator poles apart from, π=180 °, N sBe stator poles.
2. double stators and double rotors multiple-pole switching reluctance motor as claimed in claim 1 is characterized in that: described stator core is made up of first section stator core (13) and second section stator core (15); Described first section stator core (13) comprises first section stator yoke (2), first section magnetic pole of the stator (3) and first section stator armature magnetic pole winding (6); Described second section stator core (15) comprises second section stator yoke (8), second section magnetic pole of the stator (9) and second section stator armature magnetic pole winding (12).
3. double stators and double rotors multiple-pole switching reluctance motor as claimed in claim 1, it is characterized in that: described rotor core is made up of first section rotor core (14) and second section rotor core (16), and this first section rotor core (14) and second section rotor core (16) are equipped with the rotor shaft hatch (7) that has keyway; Described first section rotor core (14) comprises first section rotor magnetic pole (4), first section rotor yoke (5); Described second section rotor core (16) comprises second section rotor magnetic pole (10), the second cross-talk yoke (11).
4. double stators and double rotors multiple-pole switching reluctance motor as claimed in claim 1, it is characterized in that: described stator poles is 2 times of rotor number of poles, and the number of poles of rotor is even number combination, promptly 4/1,8/4,12/6,16/8,20/10,24/12,28/14,32/16,36/18,40/20,,,,,, N s/ N rCombination.
5. double stators and double rotors multiple-pole switching reluctance motor as claimed in claim 1 is characterized in that: described stator casing is divided into two, every shell one stator.
6. double stators and double rotors multiple-pole switching reluctance motor as claimed in claim 1 is characterized in that: the shared motor shaft of described two-stage rotor (18).
7. double stators and double rotors multiple-pole switching reluctance motor as claimed in claim 1 is characterized in that: described two stators are connected in one, or two stators are installed on the support (23).
8. double stators and double rotors multiple-pole switching reluctance motor as claimed in claim 1 is characterized in that: be provided with transducer (24) between described aft-fan (21) and the described rear end cap (20) or between described second section rotor and the described rear end cap (20).
9. double stators and double rotors multiple-pole switching reluctance motor as claimed in claim 1 is characterized in that: described rotor can be divided into internal rotor and external-rotor-type.
10. double stators and double rotors multiple-pole switching reluctance motor as claimed in claim 1 is characterized in that: described stator core is by be built in sections yoke multistage fanning strip assembling of number of magnetic poles.
CN2009201440817U 2009-09-24 2009-09-24 Double-stator-rotor multiple pole switch reluctance motor Expired - Lifetime CN201504159U (en)

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102355112A (en) * 2011-10-24 2012-02-15 常州华阳电子科技有限公司 Switched reluctance motor
CN102403861A (en) * 2010-09-09 2012-04-04 张世清 Permanent magnet multiple-pole switch reluctance motor
CN102035319B (en) * 2009-09-24 2012-07-04 张世清 Double stator-rotor multiple-pole switching reluctance motor
CN103036326A (en) * 2011-09-30 2013-04-10 三星电机株式会社 Switched reluctance motor
CN104242491B (en) * 2014-09-10 2016-09-14 太原科技大学 The outer stator type alternating current generator of packet excitation con-trol
CN106571720A (en) * 2015-10-13 2017-04-19 财团法人工业技术研究院 Hybrid dual-rotor motor structure

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102035319B (en) * 2009-09-24 2012-07-04 张世清 Double stator-rotor multiple-pole switching reluctance motor
CN102403861A (en) * 2010-09-09 2012-04-04 张世清 Permanent magnet multiple-pole switch reluctance motor
CN102403861B (en) * 2010-09-09 2014-09-03 张世清 Permanent magnet multiple-pole switch reluctance motor
CN103036326A (en) * 2011-09-30 2013-04-10 三星电机株式会社 Switched reluctance motor
CN102355112A (en) * 2011-10-24 2012-02-15 常州华阳电子科技有限公司 Switched reluctance motor
CN104242491B (en) * 2014-09-10 2016-09-14 太原科技大学 The outer stator type alternating current generator of packet excitation con-trol
CN106571720A (en) * 2015-10-13 2017-04-19 财团法人工业技术研究院 Hybrid dual-rotor motor structure
US10320270B2 (en) 2015-10-13 2019-06-11 Industrial Technology Research Institute Hybrid dual-rotor structure

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