CN105245071A - Energy-saving permanent magnetism switched reluctance motor - Google Patents
Energy-saving permanent magnetism switched reluctance motor Download PDFInfo
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- CN105245071A CN105245071A CN201510742277.6A CN201510742277A CN105245071A CN 105245071 A CN105245071 A CN 105245071A CN 201510742277 A CN201510742277 A CN 201510742277A CN 105245071 A CN105245071 A CN 105245071A
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Abstract
The invention discloses an energy-saving permanent magnetism switched reluctance motor, belonging to the field of motors. The motor comprises a rotor and a plurality of H-shaped stator blocks arranged on the circumference of the rotor, wherein the outer side of each rotor tooth of the rotor is an outer arc, the inner side of each stator tooth of the H-shaped stator blocks is an inner arc, and a gap is formed between the outer arc of the rotor tooth and the inner arc of the stator tooth; the plurality of H-shaped stator blocks form a modularized stator, a permanent magnet is arranged on the inner wall of each H-shaped stator block, and the polarity of the permanent magnets is in homo-polar superposition with the electromagnetic polarity produced by H-shaped stator block exciting windings. When the number of phases of the motor is N, the number ratio of the stator teeth to the rotor teeth of the motor is 2N: (2N-1), for example, when the number of phases of the motor is 3, the motor is a three-phase 6/5 structure or a three-phase 12/10 structure. The stator of the motor is a modularized stator, so that modularized production can be realized, inter-phase magnetic circuits are not coupled and are completely isolated, meanwhile, the motor is high in power, simple in structure, easy to maintain, strong in fault tolerance, convenient to control and high in reliability.
Description
Background technology:
Its stator of traditional switched reluctance machines, rotor are salient-pole structure, and by being energized successively to stator excitation winding, rotor pole and stator poles interact and produce torque.Due to namely rotor not having permanent magnet, also do not have winding, therefore the structure of motor is simple, and reliability is high.But just because stator, rotor all do not use permanent magnet, so in order to obtain larger Driving Torque and power, can only realize by increasing exciting power, so namely adding the cost of drive system, again reducing power density and the torque density of motor.
In addition, traditional switched reluctance machines, when having a phase job between adjacent phase, mutually disturbed by rotor with salient pole between other phase, magnetic conduction stator yoke is connected to each other, and work magnetic pole magnetic conduction magnetic circuit is long, and iron loss is large, and magnetic loss is also large.
In order to overcome the shortcoming of Conventional switched reluctance motor, the present invention proposes and utilize permanent magnetic to participate in motor acting, namely inside each notch of H-shaped stator, place embeds permanent magnet, H-shaped stator generation electromagnetic energy and permanent magnetic same polarity superposition are produced on field spider and synthesizes electromagnetic torque, substantially increase power density and the ratio of performance and volume of motor like this.
Summary of the invention:
The object of the invention is to propose high torque (HT) that a kind of permanent magnetic all participates in doing work, power density is high, fault freedom is strong, reliability is high, manufacture energy-saving permanent-magnet switched reluctance machines simple and easy to maintenance.
In order to achieve the above object, the present invention adopts following technical scheme to be achieved:
Energy-saving permanent-magnet switched reluctance machines, some H-shaped stator blocks 1 that it comprises field spider 2 and is arranged on field spider 2 excircle, wherein, rotor tooth 5 excircle of field spider 2 is external arc, stator tooth 4 inner periphery of H-shaped stator block 1 is Inner arc, and is provided with air gap between the Inner arc of the external arc of field spider tooth 5 and H-shaped stator tooth 4; Some H-shaped stator block 1 comprising modules stators, between two stator tooths 4 of each H-shaped stator block 1, the horizontal conductive magnetic yoke 7 of stator is all wound with excitation winding 3, the madial wall 8 of each H-shaped stator block 1 is provided with one group of permanent magnet 6, and the polarity that produces of permanent magnet 6 polarity and H-shaped stator block 1 is of the same name superposes.
The invention reside in, the madial wall 8 of each H-shaped stator block 1 all offers permanent magnet mounting groove 9, and permanent magnet 6 is placed in the permanent magnet mounting groove 9 of H-shaped stator block 1 madial wall 8.
The invention reside in, H-shaped stator tooth 4 and field spider tooth 5 form by silicon steel plate stacking.
The invention reside in, when energy-saving permanent-magnet switched reluctance machines, the number of phases is N phase time, and the stator salient poles tooth 4 of this motor is 2N with the ratio of the number of field spider tooth 5: (2N-1), and wherein, N is this number of motor phases.
The invention reside in, when energy-saving permanent-magnet switched reluctance machines is three phase times, motor is three-phase 6/5 structure or three-phase 12/10 structure.
The invention reside in, when energy-saving permanent-magnet switched reluctance machines is four phase times, motor is four phase 8/7 structures or four phase 16/14 structures.
The invention reside in, permanent magnet 6 is trapezoidal permanent magnet.
Relative to prior art, tool of the present invention has the following advantages:
When excitation winding 3 no power, the magnetic line of force of permanent magnet 6 without air gap, but closes along stator tooth 4 and the horizontal conductive magnetic yoke 7 of stator, does not now produce torque; When excitation winding 3 is connected with small electric stream, a part of magnetic line of force of permanent magnet 6 closes through stator tooth 4, air gap and field spider 2, another part closes through stator tooth 4 and the horizontal conductive magnetic yoke 7 of stator, now permanent magnet 6 produces torque through the part magnetic field of stator tooth 4, field spider 2 and air gap, does not produce torque through the part magnetic field of stator tooth 4 and the horizontal conductive magnetic yoke 7 of stator; When excitation winding 3 electric current is larger, permanent magnet 6 magnetic line of force all closes through stator tooth 4, air gap and field spider 2, and now permanent magnet 6 magnetic field all produces torque.Control the size of permanent magnet 6 magnetic line of force path and electromagnetic force by controlling excitation winding 3 electric current, thus realize the direct torque of energy-saving permanent-magnet switched reluctance machines.
Due to the modular stator that energy-saving permanent-magnet Stators for Switched Reluctance Motors of the present invention is made up of some H-shaped stator blocks 1, compare common switched reluctance machines, stator yoke is not had between adjacent phase, magnetic conduction magnetic circuit is the shortest, compared to other Hybrid Excitation Switched Reluctance Motor, stator yoke or magnetic isolation plate is not had between adjacent phase, so alternate magnetic circuit be not coupled, completely isolated, therefore energy-saving permanent-magnet switched reluctance machines structure provided by the invention simple, easily manufacture, convenient for installation and maintenance, fault freedom is strong, reliability is high.And energy-saving permanent-magnet switched reluctance machines magnetic circuit is short magnetic circuit, iron loss is little, and leakage field is minimum.
Energy-saving permanent-magnet switched reluctance machines of the present invention, namely can make motor and also can do generator use, and due to its high-performance weight ratio, high torque (HT), power density is high, fault freedom is strong, reliability is high, the outstanding advantages such as easy manufacture and maintenance, all have broad application prospects in fields such as electric automobile, track traffic, Aero-Space, Digit Control Machine Tool and mining machinery, petrochemical industry, robots.
The invention reside in, when the energy-saving permanent-magnet switched reluctance machines number of phases is N phase time, the H-shaped stator tooth 4 of motor is 2N with the ratio of the number of field spider tooth 5: (2N-1), and such as three phase times are three-phase 6/5 electrode structure, three-phase 12/10 electrode structure etc.And stator and rotor number of poles is more, the pulsation of motor output torque is less, and motor oscillating is also less, and it will be more steady for running.
Accompanying drawing illustrates:
Fig. 1 is the structural representation of the energy-saving permanent-magnet switched reluctance machines of three-phase 6/5 structure of the present invention.
Fig. 2 is the structural representation of the energy-saving permanent-magnet switched reluctance machines of three-phase 12/10 structure of the present invention.
Fig. 3 is the magnetic line of force distribution map that the stator and rotor of the energy-saving permanent-magnet switched reluctance machines of three-phase 6/5 structure of the present invention are in when not lining up position.
Fig. 4 is the stator and rotor of the energy-saving permanent-magnet switched reluctance machines of three-phase 6/5 structure of the present invention magnetic line of force distribution maps when being in aligned position.
Fig. 5 is the magnetic line of force distribution map that the stator and rotor of the energy-saving permanent-magnet switched reluctance machines of three-phase 12/10 structure of the present invention are in when not lining up position.
Fig. 6 is the stator and rotor of the energy-saving permanent-magnet switched reluctance machines of three-phase 12/10 structure of the present invention magnetic line of force distribution maps when being in aligned position.
Fig. 7 is energy-saving permanent-magnet switched reluctance machines H-shaped stator block structural representation of the present invention.
In figure: 1 is H-shaped stator block; 2 is rotor; 3 is excitation winding; 4 is stator tooth; 5 is rotor tooth; 6 is permanent magnet; 7 is the horizontal conductive magnetic yoke of stator; 8 is H-shaped stator block madial wall; 9 is permanent magnet mounting groove.
Embodiment:
Below in conjunction with drawings and Examples, technical scheme of the present invention is described in detail.
As shown in figure (1) and figure (2), energy-saving permanent-magnet switched reluctance machines of the present invention, some H-shaped stator blocks 1 that it comprises field spider 2 and is arranged on field spider 2 excircle, wherein, be external arc outside the rotor tooth 5 of field spider 2, be Inner arc inside the stator tooth 4 of H-shaped stator block 1, and be provided with air gap between the Inner arc of the external arc of field spider tooth 5 and stator tooth 4; Several H-shaped stator block 1 comprising modules stators, the horizontal conductive magnetic yoke 7 of each H-shaped stator block 1 is all wound with excitation winding 3, the madial wall 8 of each H-shaped stator block 1 is provided with one group of permanent magnet 6, and the polarity same polarity superposition that the polarity of permanent magnet 6 and H-shaped stator block 1 excitation winding 3 produce is on field spider 2 rotor tooth 5, when excitation winding 3 no power, permanent magnet 6 magnetic induction line is by the short circuit of H-shaped stator block 1 horizontal conductive magnetic yoke 7, externally not aobvious magnetic, to field spider 2 rotor tooth 5 without any active force.
Further, the madial wall 8 of each H-shaped stator block 1 all offers permanent magnet mounting groove 9, and permanent magnet 6 is placed in the permanent magnet mounting groove 9 between H-shaped stator block madial wall 8.
Further, stator tooth 4 and rotor tooth 5 form by silicon steel plate stacking, and permanent magnet 6 is square permanent magnet or trapezoidal permanent magnet.
Further, when number of motor phases is N phase time, the stator tooth 4 of motor is 2N with the ratio of the number of rotor tooth 5: (2N-1), and wherein N is number of motor phases, and such as, when number of motor phases is three phase times, motor is three-phase 6/5 structure or three-phase 12/10 structure; When number of motor phases is four phase times, motor is four phase 8/7 structures or four phase 16/14 structures.
Embodiment:
When the number of phases of energy-saving permanent-magnet switched reluctance machines provided by the invention is three phase times, described motor can be divided into three-phase 6/5 structure and three-phase 12/10 structure, and its operation principle is identical.
The cross section structure of the energy-saving permanent-magnet switched reluctance machines of three-phase 6/5 structure of the present invention, as shown in figure (1), comprises H-shaped stator block 1, rotor 2, excitation winding 3 and permanent magnet 6.Three H-shaped stator blocks 1 are evenly distributed in the salient pole circumference of rotor 2, the notch place of each H-shaped stator block 1 has permanent magnet mounting groove 9, permanent magnet 6 is placed in the permanent magnet mounting groove 9 of H-shaped stator block 1, the electromagnetism NS pole same polarity that NS pole and H-shaped stator block 1 excitation winding 3 of permanent magnet 6 produce superposes, and excitation winding 3 is wrapped in the horizontal conductive magnetic yoke 7 of each H-shaped stator block 1.When excitation winding 3 no power, the magnetic line of force of permanent magnet 6 without air gap, but closes along stator tooth 4 and the horizontal conductive magnetic yoke 7 of stator, does not now produce torque; When excitation winding 3 is connected with small electric stream, a part of magnetic line of force of permanent magnet 6 closes through stator tooth 4, air gap, field spider 2 rotor tooth 5, and another part does not produce torque through the part magnetic field of stator tooth 4 and the horizontal conductive magnetic yoke 7 of stator; When excitation winding 3 electric current is larger, whole permanent magnet 6 magnetic line of force is all closed through stator tooth 4, air gap and field spider 2 rotor tooths 5, now permanent magnet 6 magnetic field all produces torque, H-shaped stator block 1 generates an electromagnetic field and also produces torque by stator tooth 4 and the horizontal conductive magnetic yoke 7 of stator, air gap, field spider 2 rotor tooth 5 simultaneously, namely electromagnetic field superposes with permanent magnetic field and acts on field spider tooth 5 by stator tooth 4, air gap, produces resultant torque.The operation logic of the energy-saving permanent-magnet switched reluctance machines of three-phase 6/5 structure of the present invention is the same with common switched reluctance machines, and three-phase windings is conducting successively, and turn-on cycle angle is 24 degree.In addition, as shown in figure (3) and figure (4), figure (3) is the magnetic line of force distribution map that the stator and rotor of the energy-saving permanent-magnet switched reluctance machines of three-phase 6/5 structure of the present invention are in when not lining up position; Figure (4) is the stator and rotor of the energy-saving permanent-magnet switched reluctance machines of three-phase 6/5 structure of the present invention magnetic line of force distribution maps when being in aligned position.
The cross section structure of the energy-saving permanent-magnet switched reluctance machines of three-phase 12/10 structure of the present invention is as shown in figure (2), and it comprises H-shaped stator block 1, field spider 2, excitation winding 3 and permanent magnet 6.Six H-shaped stator blocks 1 are evenly distributed on the excircle of field spider 2 upwards, the notch place of each H-shaped stator block 1 has permanent magnet mounting groove 9, permanent magnet 6 is placed in the permanent magnet mounting groove 9 of H-shaped stator block 1, permanent magnet 6 polarity and H-shaped stator block 1 produce polarity and must same polarity superpose, and excitation winding 3 is wrapped in the horizontal conductive magnetic yoke 7 of each H-shaped stator block 1.When excitation winding 3 no power, the magnetic line of force of permanent magnet 6 without air gap, but closes along stator tooth 4 and the horizontal conductive magnetic yoke 7 of stator, and namely permanent magnet 6 magnetic line of force is by the short circuit of magnetic conduction silicon steel material, does not now produce torque; When excitation winding 3 is connected with less electric current, a part of magnetic line of force of permanent magnet 6 is closed through H-shaped stator tooth 4, air gap and field spider 2 rotor tooths 5, another asks that part closes through H-shaped stator tooth 4 and the horizontal conductive magnetic yoke 7 of stator, now permanent magnet 6 produces torque through the part magnetic field of H-shaped stator tooth 4, air gap, field spider 2 rotor tooth 5, does not produce torque through the part magnetic field of H-shaped stator tooth 4 and the horizontal conductive magnetic yoke 7 of stator; When excitation winding 3 electric current is larger, whole permanent magnet 6 magnetic line of force is closed through H-shaped stator tooth 4, air gap and field spider 2 rotor tooths 5, and the whole magnetic line of force in this permanent magnet 6 magnetic field produces torque.The operation logic of the energy-saving permanent-magnet switched reluctance machines of three-phase 12/10 structure of the present invention is the same with common switched reluctance machines, and three-phase windings is energized conducting successively, and turn-on cycle angle is 12 degree.In addition, as shown in figure (5) and figure (6), figure (5) is the magnetic line of force distribution map that the stator and rotor of the energy-saving permanent-magnet switched reluctance machines of three-phase 12/10 structure of the present invention are in when not lining up position; Figure (6) is the stator and rotor of the energy-saving permanent-magnet switched reluctance machines of three-phase 12/10 structure of the present invention magnetic line of force distribution maps when being in aligned position; Energy-saving permanent-magnet switched reluctance machines H-shaped stator block cross section structure of the present invention, as shown in figure (7), comprises H-shaped stator block 1; Field spider 2; Excitation winding 3; Stator tooth 4; Rotor tooth 5; Permanent magnet 6; The horizontal conductive magnetic yoke 7 of stator; H-shaped stator block madial wall 8; Permanent magnet mounting groove 9.
Above content is the further description done energy-saving permanent-magnet switched reluctance machines of the present invention in conjunction with concrete preferred implementation; can not assert that embodiments of the present invention are only limitted to this; for general technical staff of the technical field of the invention; all any simple modification of doing according to Spirit Essence of the present invention and equivalent structure transformation or modification, all belong to the protection range that claims that the present invention submits to are determined.
Claims (5)
1. energy-saving permanent-magnet switched reluctance machines, it is characterized in that, some H-shaped stator blocks 1 that it comprises field spider 2 and is arranged on field spider 2 excircle, wherein, rotor tooth 5 excircle of field spider 2 is external arc, the inner periphery of the stator tooth 4 of H-shaped stator block 1 is Inner arc, and be provided with air gap between the Inner arc of the external arc of rotor tooth 5 and stator tooth 4, some H-shaped stator block 1 comprising modules stators, the madial wall 8 of each H-shaped stator block 1 is provided with one group of permanent magnet 6, and the polarity that the polarity of permanent magnet 6 and H-shaped stator block 1 excitation winding 3 produce must same polarity superpose.
2. energy-saving permanent-magnet switched reluctance machines according to claim 1, is characterized in that, the madial wall 8 of each H-shaped stator block 1 all offers permanent magnet mounting groove 9, and permanent magnet 6 is placed in the permanent magnet mounting groove 9 of H-shaped stator block 1 madial wall 8.
3. energy-saving permanent-magnet switched reluctance machines according to claim 1, is characterized in that, when number of motor phases is N phase time, the stator tooth 4 of motor is 2N with the ratio of the number of field spider tooth 5: (2N-1), and wherein, N is number of motor phases.
4. energy-saving permanent-magnet switched reluctance machines according to claim 1, is characterized in that, when number of motor phases is three phase times, motor is three-phase 6/5 structure, three-phase 12/10 structure; When number of motor phases is four phase times, motor is four phase 8/7 structures, four phase 16/14 structures.
5. energy-saving permanent-magnet switched reluctance machines according to claim 1, is characterized in that, excitation winding 3 is wrapped in the horizontal conductive magnetic yoke 7 of H-shaped stator block 1 stator; Permanent magnet 6 is trapezoidal permanent magnet; Stator tooth 4 and field spider 5 form by silicon steel plate stacking.
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| CN201510742277.6A CN105245071A (en) | 2015-10-30 | 2015-10-30 | Energy-saving permanent magnetism switched reluctance motor |
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| CN201510742277.6A CN105245071A (en) | 2015-10-30 | 2015-10-30 | Energy-saving permanent magnetism switched reluctance motor |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105914910A (en) * | 2016-06-15 | 2016-08-31 | 南京航空航天大学 | Doubly-salient permanent magnet motor structure |
| CN107040059A (en) * | 2017-06-13 | 2017-08-11 | 深圳华引动力科技有限公司 | Single phase multi module and single phase multi-stage module combined type switched reluctance machines |
| CN107579641A (en) * | 2017-10-23 | 2018-01-12 | 史立伟 | A kind of automobile start generator |
| CN108599493A (en) * | 2018-04-25 | 2018-09-28 | 江苏大学 | A kind of pure electric automobile axial magnetic flux Hybrid Excitation Switched Reluctance Motor |
| CN108768008A (en) * | 2018-05-30 | 2018-11-06 | 华中科技大学 | A kind of switch flux-linkage magneto |
| CN109802542A (en) * | 2019-01-08 | 2019-05-24 | 南京一体科技有限公司 | A kind of outer rotor desk permanent-magnet switched reluctance motor |
| CN110224555A (en) * | 2019-04-15 | 2019-09-10 | 李鹤群 | A kind of magnetic electrical device of low magnetic resistance |
| EP3659237A4 (en) * | 2017-07-25 | 2021-04-28 | Vandenberg, Chad Ashley | Generators having rotors that provide alternate magnetic circuits |
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| CN101710775A (en) * | 2009-12-16 | 2010-05-19 | 南京航空航天大学 | Hybrid excitation block type stator and rotor switch reluctance machine |
| US20130221889A1 (en) * | 2012-02-23 | 2013-08-29 | Samsung Electro-Mechanics Co., Ltd. | Multi-phase switched reluctance motor apparatus and control method thereof |
| CN103414387A (en) * | 2013-06-17 | 2013-11-27 | 赵明珍 | H-1type electrically-controlled magnetic motor |
| CN104935095A (en) * | 2015-06-15 | 2015-09-23 | 西安交通大学 | U-shaped stator hybrid-excitation switch reluctance machine |
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| CN101431284A (en) * | 2008-12-22 | 2009-05-13 | 哈尔滨工业大学 | Composite switch reluctance motor |
| CN101710775A (en) * | 2009-12-16 | 2010-05-19 | 南京航空航天大学 | Hybrid excitation block type stator and rotor switch reluctance machine |
| US20130221889A1 (en) * | 2012-02-23 | 2013-08-29 | Samsung Electro-Mechanics Co., Ltd. | Multi-phase switched reluctance motor apparatus and control method thereof |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105914910A (en) * | 2016-06-15 | 2016-08-31 | 南京航空航天大学 | Doubly-salient permanent magnet motor structure |
| CN107040059A (en) * | 2017-06-13 | 2017-08-11 | 深圳华引动力科技有限公司 | Single phase multi module and single phase multi-stage module combined type switched reluctance machines |
| CN107040059B (en) * | 2017-06-13 | 2023-11-07 | 深圳华引动力科技有限公司 | Single-phase multipole module and single-phase multipole module combined switch reluctance motor |
| EP3659237A4 (en) * | 2017-07-25 | 2021-04-28 | Vandenberg, Chad Ashley | Generators having rotors that provide alternate magnetic circuits |
| CN107579641A (en) * | 2017-10-23 | 2018-01-12 | 史立伟 | A kind of automobile start generator |
| CN107579641B (en) * | 2017-10-23 | 2019-11-19 | 徐州惠博机电科技有限公司 | A kind of automobile start generator |
| CN108599493A (en) * | 2018-04-25 | 2018-09-28 | 江苏大学 | A kind of pure electric automobile axial magnetic flux Hybrid Excitation Switched Reluctance Motor |
| CN108599493B (en) * | 2018-04-25 | 2020-03-31 | 江苏大学 | Axial magnetic flux hybrid excitation switched reluctance motor for pure electric vehicle |
| CN108768008A (en) * | 2018-05-30 | 2018-11-06 | 华中科技大学 | A kind of switch flux-linkage magneto |
| CN109802542A (en) * | 2019-01-08 | 2019-05-24 | 南京一体科技有限公司 | A kind of outer rotor desk permanent-magnet switched reluctance motor |
| CN110224555A (en) * | 2019-04-15 | 2019-09-10 | 李鹤群 | A kind of magnetic electrical device of low magnetic resistance |
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