CN101431284B - Composite switch reluctance motor - Google Patents

Composite switch reluctance motor Download PDF

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Publication number
CN101431284B
CN101431284B CN2008102097542A CN200810209754A CN101431284B CN 101431284 B CN101431284 B CN 101431284B CN 2008102097542 A CN2008102097542 A CN 2008102097542A CN 200810209754 A CN200810209754 A CN 200810209754A CN 101431284 B CN101431284 B CN 101431284B
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CN
China
Prior art keywords
permanent magnet
stator core
stator
motor
rotor
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CN2008102097542A
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Chinese (zh)
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CN101431284A (en
Inventor
吴红星
寇宝泉
杨锡辉
刘奉海
贵献国
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哈尔滨工业大学
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Priority to CN2008102097542A priority Critical patent/CN101431284B/en
Publication of CN101431284A publication Critical patent/CN101431284A/en
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Publication of CN101431284B publication Critical patent/CN101431284B/en

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Abstract

The invention relates to a mixed switch reluctance motor, belonging to the electric motor field. The invention overcomes the defects that the installation of a winding is difficult, the manufacturing process is comparatively difficult, the space factor is low, and the like due to the structure of the existing switch reluctance motor. In the invention, the mixed switch reluctance motor consists of a stator and a rotor, wherein, the stator is composed of a permanent magnet, an exciting winding and a stator core; an air gap is arranged between the excircle of the rotor core of the rotor and the inner circle of the stator core, the exciting winding is embedded in an tooth socket of the stator core, while the permanent magnet is embedded into the tooth part of the stator core along the axis direction. In the invention, a high-performance tangential magnetizing permanent magnet is used, and the permanent magnet is embedded into the tooth part of the stator core along the axis direction, thus forming a mixed excitation switch reluctance motor; compared with the existing mixed excitation switch reluctance motor, the motor in the invention has unchanged number of permanent magnets and increased usable area of the stator groove winding, thus improving the performance and volume ratio and the performance and weight ratio of the motor of the invention, reducing cost and simplifying manufacturing process. The motor of the invention can be used as an electric motor and an electric generator.

Description

Composite switch reluctance motor
Technical field
The present invention relates to a kind of Hybrid Excitation Switched Reluctance Motor, belongs to machine field.
Background technology
Existing switched reluctance machines as shown in Figure 1, the stator and rotor of motor are salient-pole structure.By the stator excitation winding is switched on successively, stator poles and rotor pole interact and produce torque.Owing to both do not had winding on the rotor, do not have permanent magnet, so motor be simple in structure, reliable yet.But all do not use permanent magnet just because of stator and rotor,, just need big exciting power, so both limited the motor properties volume ratio, strengthened the cost of drive system again in order to obtain big output torque.
Existing Hybrid Excitation Switched Reluctance Motor has strip permanent magnet as shown in Figure 2 in the stator slot, permanent magnet is a cutting orientation magnetizing.After the energising, the trend that the oriented magnetic resistance minimal path of magnetic circuit changes is utilized the reluctance torque that radially multi-phase excitation winding magnetic potential on the stator and cutting orientation magnetizing permanent magnet magnetic potential produce and is moved.But this structure causes the winding difficulty that rolls off the production line, shortcoming such as technology difficulty is bigger, and copper factor is low.
Summary of the invention
Shortcomings such as the present invention causes the winding difficulty that rolls off the production line in order to solve existing switched reluctance machines structure, and technology difficulty is bigger, and copper factor is low, and a kind of composite switch reluctance motor has been proposed.
Composite switch reluctance motor of the present invention is made up of stator and rotor; Stator is made up of permanent magnet, excitation winding and stator core; Be provided with air gap between the interior circle of the cylindrical of the rotor core of rotor and stator core, excitation winding embeds in the teeth groove of stator core, and permanent magnet axially embeds the tooth portion of stator core; The permanent magnet (11) that the tooth portion of stator core (13) is provided be a strip permanent magnet, and permanent magnet (11) magnetizing direction is identical with magnetic direction after excitation winding (12) is switched on.
The present invention uses high-performance cutting orientation magnetizing permanent magnet, permanent magnet is axially embedded the tooth portion of stator core, constitute a kind of Hybrid Excitation Switched Reluctance Motor, quantity than existing Hybrid Excitation Switched Reluctance Motor permanent magnet is constant, stator slot winding usable area increases, improve motor properties volume ratio and performance weight ratio, reduced cost and manufacturing process.This motor both can be used as motor and had used, and also can be used as generator and used.
The present invention embeds permanent magnet the tooth portion of stator core, winding electric energized circuit and permanent magnet radially energized circuit organically combine, the electricity excitation magnetic potential had both had excitation function, have again permanent magnet excitation magnetic field controlled function, make three kinds of excitation sources of this motor intercouple, because air-gap flux is the stack of electro-magnetic flux and permanent magnet magnetic flux, total magnetic flux is more than the magnetic flux of independent winding electric excitation, therefore the output torque of motor is bigger than the motor that does not add permanent magnet, requiring to export under the identical condition of torque in other words, the required exciting current of motor of the present invention is littler than the common switched reluctance machines that does not add permanent magnet, therefore electric efficiency height of the present invention.
Though this motor has also adopted permanent magnet, different with traditional magneto working mechanism, traditional magneto is that armature supply and permanent magnet magnetic field interactions produce torque; And this motor belongs to reluctance motor, is the size of the control of magnetic field of permanent magnet being controlled motor torque by armature supply.
Though this motor is a short magnetic circuit mixing exciting switch Magnet resistance motor, different with existing short magnetic circuit mixing exciting switch Magnet resistance motor structure, in the existing short magnetic circuit mixing exciting switch Magnet resistance motor stator slot strip permanent magnet is arranged.It is different fully that permanent magnet produces the magnetic circuit of magnetic potential, though the quantity of permanent magnet is constant, the motor magnetic flux has improved electric machine iron core utilization rate by three excitation source mutual superposition.Because the closed tooth of cancellation has improved copper factor and has fallen, the low manufacturing cost and the manufacturing process of motor.
Description of drawings
Fig. 1 is existing switched reluctance machines structural representation; Fig. 2 is existing Hybrid Excitation Switched Reluctance Motor structural representation; Fig. 3 is a composite switch reluctance motor structural representation of the present invention; Fig. 4 is the closed path schematic diagram of hybrid switch reluctance motor winding no power permanent magnet 11 magnetic fluxs; Fig. 5 is the closed path schematic diagram of hybrid switch reluctance motor A winding energising back permanent magnet magnetic flux; Fig. 6 is the closed path schematic diagram that hybrid switch reluctance motor excitation magnetic potential produces magnetic flux.
Embodiment
Embodiment one: in conjunction with Fig. 3 present embodiment is described, the composite switch reluctance motor of present embodiment is made up of stator 1 and rotor 2; Stator 1 is made up of permanent magnet 11, excitation winding 12 and stator core 13; Be provided with air gap 3 between the cylindrical of the rotor core 21 of rotor 2 and the interior circle of stator core 13, excitation winding 12 embeds in the teeth groove of stator core 13, and permanent magnet 11 axially embeds the tooth portion of stator core 13.Utilize the reluctance torque that the permanent magnet magnetic potential of the electric excitation magnetic potential of the radially excitation winding 12 on the stator and stator teeth permanent magnet 11 produces and move.
Embodiment two: present embodiment is described in conjunction with Fig. 3, present embodiment and embodiment one difference are that the permanent magnet 11 that the tooth portion of described stator core 13 is provided with is strip permanent magnet, and permanent magnet 11 magnetizing directions are identical with magnetic direction after excitation winding 12 is switched on.Other composition is identical with embodiment one with connected mode.
Embodiment three: in conjunction with Fig. 3 present embodiment is described, present embodiment and embodiment one difference are that the quantity of the permanent magnet 11 that the tooth portion of described stator core 13 is provided with is the number of teeth of stator core 13.Other composition is identical with embodiment one with connected mode.
Embodiment four: present embodiment is described in conjunction with Fig. 3, present embodiment and embodiment one difference are that the rotor core 21 of described stator core 13 and rotor 2 is built up by silicon steel sheet, and the rotor core 21 of stator core 13 and rotor 2 is salient-pole structure.Other composition is identical with embodiment one with connected mode.
Embodiment five: in conjunction with Fig. 3 present embodiment is described, it is adjacent with phase winding that present embodiment and embodiment one difference are that excitation winding 12 adopts.Other composition is identical with embodiment one with connected mode.
Content of the present invention is not limited only to the content of the respective embodiments described above, and the combination of one of them or several embodiments equally also can realize the purpose of inventing.
The operation principle of composite switch reluctance motor of the present invention:
When excitation winding 12 no powers, permanent magnet 11 magnetic lines of force are not by air gap and along stator core 13 tooth portion closures; When excitation winding 12 was alived, the path of the path of the electric excitation magnetic line of force and two place's permanent magnets, 11 magnetic lines of force formed parallel circuits, three magnetic field mutual superposition on stator core 12, air gap 3 and rotor 2.Control the path and size of permanent magnet 11 magnetic fluxs (magnetic line of force) by the on-off action (break-make of winding current) of electric excitation magnetic potential, realize the torque control of motor.As follows:
When stator excitation winding 12 no powers, the closed path of the magnetic flux of the permanent magnet 11 of stator core 13 tooth portions is: the S utmost point of the N utmost point → stator core 13 tooth portion → permanent magnets 11 of permanent magnet 11.As shown in Figure 4.
When 12 energisings of stator excitation winding, the closed path of the magnetic flux of the permanent magnet 11 that stator core 13 tooth portions place is provided with is: the S utmost point of yoke portion → stator core 13 tooth portion → permanent magnets 11 of pole body → air gap 3 → stator core 13 tooth portion → stator cores 13 of yoke portion → rotor core 21 big utmost points of the pole body → rotor core 21 of the N utmost point → stator core 13 tooth portion → air gaps 3 → rotor core 21 big utmost points of permanent magnet 11.As shown in Figure 5.
When 12 energisings of stator multi-phase excitation winding, the closed path that the stator excitation magnetic potential produces magnetic flux is: yoke portion → stator core 13 yoke portions of pole body → air gap 3 → stator core 13 tooth portion → stator cores 13 of yoke portion → rotor core 21 big utmost points of the pole body → rotor core 21 of stator core 13 yoke portion → stator cores 13 tooth portion → air gaps 3 → rotor core 21 big utmost points.As shown in Figure 6.

Claims (4)

1. composite switch reluctance motor, it is made up of stator (1) and rotor (2); Stator (1) is made up of permanent magnet (11), excitation winding (12) and stator core (13); Be provided with air gap (3) between the cylindrical of the rotor core (21) of rotor (2) and the interior circle of stator core (13), excitation winding (12) embeds in the teeth groove of stator core (13), it is characterized in that permanent magnet (11) axially embeds the tooth portion of stator core (13); The permanent magnet (11) that the tooth portion of stator core (13) is provided be a strip permanent magnet, and permanent magnet (11) magnetizing direction is identical with magnetic direction after excitation winding (12) is switched on.
2. composite switch reluctance motor according to claim 1 is characterized in that the quantity of the permanent magnet (11) that the tooth portion of described stator core (13) is provided with is the number of teeth of stator core (13).
3. composite switch reluctance motor according to claim 2 is characterized in that the rotor core (21) of described stator core (13) and rotor (2) is built up by silicon steel sheet, and the rotor core (21) of stator core (13) and rotor (2) is salient-pole structure.
4. according to claim 1 or 3 described composite switch reluctance motors, it is adjacent with phase winding to it is characterized in that excitation winding (12) adopts.
CN2008102097542A 2008-12-22 2008-12-22 Composite switch reluctance motor CN101431284B (en)

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Application Number Priority Date Filing Date Title
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Application Number Priority Date Filing Date Title
CN2008102097542A CN101431284B (en) 2008-12-22 2008-12-22 Composite switch reluctance motor

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CN101431284A CN101431284A (en) 2009-05-13
CN101431284B true CN101431284B (en) 2011-01-12

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GB2468696B (en) * 2009-03-18 2011-08-10 Imra Europ S A S Uk Res Ct An electrical machine
DE102010002182A1 (en) * 2010-02-22 2011-08-25 Robert Bosch GmbH, 70469 Machine tool with electric generator for passive power generation
GB2480229A (en) * 2010-03-10 2011-11-16 Univ Nottingham Stator for a flux switching inductor machine
CN101860158A (en) * 2010-05-18 2010-10-13 哈尔滨工业大学 Switch magnetic flow permanent magnet synchronous motor
CN102185451A (en) * 2011-04-19 2011-09-14 南京航空航天大学 Segmented rotor type magnetic flux switching motor with hybrid excitation and magnetic adjustment method
CN102420511A (en) * 2011-12-31 2012-04-18 何嘉颖 Mixed-excitation magnetic pole structure
CN102593974A (en) * 2012-03-17 2012-07-18 中国矿业大学 Hybrid excitation switched flux motor
CN102856999B (en) * 2012-08-27 2015-04-01 杭州娃哈哈集团有限公司 Mixed-rotor reluctance motor
CN105245071A (en) * 2015-10-30 2016-01-13 赵明珍 Energy-saving permanent magnetism switched reluctance motor
CN105226894A (en) * 2015-10-30 2016-01-06 赵明珍 U-shaped stator permanent magnet switched reluctance machines
CN106026598A (en) * 2016-05-11 2016-10-12 浙江大学 Structure for reducing cogging torque of flux-switching permanent magnet machine
CN108448854A (en) * 2018-03-29 2018-08-24 宁波诺丁汉大学 Frequency permanent-magnetism synchronous motor with high system
WO2020162828A1 (en) * 2019-02-08 2020-08-13 Emf Innovations Pte. Ltd. A stator, a motor and a vehicle having the same and a method of manufacturing the stator
CN110176846B (en) * 2019-04-30 2020-11-24 华中科技大学 Switch flux permanent magnet motor with connecting bridge

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CN1783670A (en) * 2004-12-03 2006-06-07 朱正风 Method for changing magnetic leakage of magnetoresistance motor and its gear slot bias magnetic magnetoresistance motor
CN1848608A (en) * 2006-04-07 2006-10-18 东南大学 Stator permanent magnetic type variable magnetic resistance electric machine
CN101291095A (en) * 2008-06-12 2008-10-22 哈尔滨工业大学 Hybrid switch reluctance motor

Patent Citations (3)

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Publication number Priority date Publication date Assignee Title
CN1783670A (en) * 2004-12-03 2006-06-07 朱正风 Method for changing magnetic leakage of magnetoresistance motor and its gear slot bias magnetic magnetoresistance motor
CN1848608A (en) * 2006-04-07 2006-10-18 东南大学 Stator permanent magnetic type variable magnetic resistance electric machine
CN101291095A (en) * 2008-06-12 2008-10-22 哈尔滨工业大学 Hybrid switch reluctance motor

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