CN206135564U - Three -phase mixed excitation magnetic flow switches motor structure - Google Patents

Three -phase mixed excitation magnetic flow switches motor structure Download PDF

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Publication number
CN206135564U
CN206135564U CN201620387325.4U CN201620387325U CN206135564U CN 206135564 U CN206135564 U CN 206135564U CN 201620387325 U CN201620387325 U CN 201620387325U CN 206135564 U CN206135564 U CN 206135564U
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CN
China
Prior art keywords
stator
permanent magnet
winding
rotor
motor
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Withdrawn - After Issue
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CN201620387325.4U
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Chinese (zh)
Inventor
侯丽钢
孟小利
周倩云
杜幼芝
丁立伟
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Nanjing University of Aeronautics and Astronautics
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Nanjing University of Aeronautics and Astronautics
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Abstract

The utility model discloses a three -phase mixed excitation magnetic flow switches motor structure, including rotor, stator, permanent magnet, direct current excitation winding, three -phase armature winding, stator and rotor are salient pole tooth's socket structure, and the stator includes a plurality of stator extremely, are stator tooth grooves between the adjacent stator utmost point, all are provided with two sets of windings in every stator tooth grooves, are three -phase armature winding and direct current excitation winding respectively, three -phase armature winding and direct current excitation winding are concentrated winding, the permanent magnet is a plurality of, set up respectively in every stator tooth grooves's opening part, and the permanent magnet on a stator utmost point both sides is same polarity. This motor novel structure, the dependable performance, control is simple, can promote motor torque output behind the joining permanent magnet, reduces the motor copper loss, owing to lay position relation, has avoided the demagnetization problem of permanent magnet simultaneously. Improve the reliability and the utilization ratio of permanent magnet, promote motor electromagnetic compatibility ability greatly.

Description

A kind of three-phase hybrid excitation flux switch motor structure
Technical field
This utility model belongs to technical field of motors, and more particularly to a kind of structure novelty is firm, reliable, performance efficiency Three-phase hybrid excitation flux switch motor structure.
Background technology
Motor is requisite dynamical element in industrialized society, traditional magneto, due to the effect of permanent magnet, Electric efficiency and power density are all of a relatively high, but the demagnetization problem that permanent magnet is present also limit its further development.It is double Salient-pole machine is a kind of new special motor for growing up in recent years, and its stator and rotor is salient pole tooth slot structure, stator armature Winding is centralized winding, and without winding on rotor, simple structure is reliable, is adapted to high-speed cruising and severe working environment. Additionally, double salient-pole electric machine does not need the participation of power inverter under generating state, control more convenient.Therefore double salient-pole electric machine Application in fields such as Aero-Space, shipping industry, green energy resources is more and more extensive.
Flux switch motor is exactly a kind of form of double salient-pole electric machine, and traditional flux switch motor will be permanent magnet embedded fixed In sub- yoke, air-gap field is produced by permanent magnet, it is impossible to adjust, therefore the velocity interval of motor has been limited, and permanent magnet is high Warm demagnetization problem is also difficult to solve.
Utility model content
The purpose of this utility model is to provide a kind of three-phase hybrid excitation flux switch motor structure, to solve existing magnetic Air-gap field that logical switch motor is present is unadjustable, the problem of permanent magnet demagnetization.
For achieving the above object, this utility model is employed the following technical solutions:
A kind of three-phase hybrid excitation flux switch motor structure, including rotor, stator, permanent magnet, DC excitation winding, three Phase armature winding, the stator and rotor are salient pole tooth slot structure, and stator includes several stator poles, between adjacent stator pole For stator teeth groove, two groups of windings, respectively threephase armature winding and DC excitation winding in each stator teeth groove, are provided with;Three Phase armature winding and DC excitation winding are concentratred winding;The permanent magnet is several, is respectively arranged at each stator tooth At the opening of groove, and the permanent magnet on a stator poles both sides is same polarity.
Further, the DC excitation winding in each described stator teeth groove is identical, in two neighboring stator teeth groove DC excitation winding polarity is contrary.
Further, described rotor and stator are formed by silicon steel plate packing.
Further, described permanent magnet is the neodymium iron boron or ferrite for magnetizing.
Further, the surface of the side of described permanent magnet and stator poles is at grade.
Further, 2 times for the arc length of stator poles end of the spacing of adjacent stator poles end.
Further, the arc length that the rotor outwards has rotor pole, rotor pole end is equal to or more than stator poles end Arc length.
The beneficial effects of the utility model are:Three-phase hybrid excitation flux switch motor structure of the present utility model has following Prominent advantage:
A) with rotor salient pole tooth slot structure, without winding and permanent magnet on rotor, inherit the letter of double salient-pole electric machine structure Single, reliable advantage;
B) as permanent magnet is not embedded in stator tooth or stator yoke, the structural strength of motor is not reduced.
C) each stator slot has identical Exciting Windings for Transverse Differential Protection, and the situation of leakage magnetic flux is being ignored in being uniformly distributed for magnetic flux Under, when such rotor is rotated, the magnetic potential of any time hinge is close to sine, is passed through the sinusoidal armature electricity with magnetic potential same phase Stream so that output ripple is very little.
D) due to adding permanent magnet excitation, the increase of power of motor density improves motor overall performance.
E) permanent magnet is placed at stator channel opening, improves the intrinsic demagnetization problem of permanent magnet.
Description of the drawings
Fig. 1 is three-phase hybrid excitation flux switch motor structural representation of the present utility model;
Fig. 2 a, Fig. 2 b, Fig. 2 c are the three-phase hybrid excitation flux switch motor permanent magnet and DC excitation of utility model Magnetic flux schematic diagram;
Fig. 3 is that demagnetization of the three-phase hybrid excitation flux switch motor of utility model in diverse location affects schematic diagram.
Specific embodiment
Below in conjunction with the accompanying drawings this utility model is further described.
Be illustrated in figure 1 a kind of three-phase hybrid excitation flux switch motor structure, including rotor 1, stator 5, permanent magnet 2, DC excitation winding 3, threephase armature winding 4, stator 5 and rotor 1 are salient pole tooth slot structure, and stator 5 includes several stators Pole 51, is stator teeth groove 52 between adjacent stator pole 51, is provided with two groups of windings, is respectively used as in each stator teeth groove 52 The armature winding of a phase and DC excitation winding in ABC three-phases;Threephase armature winding 4 and DC excitation winding 3 be concentration around Group;The permanent magnet 2 is several, is respectively arranged at the opening of each stator teeth groove 52, and 51 both sides of stator poles Permanent magnet 2 is same polarity, N poles or S poles.Such as Fig. 1, rotor has 10 teeth, and stator has 12 teeth (i.e. stator poles 51), 12 three Phase armature winding 4 and 12 DC excitation windings 3.There is a permanent magnet 2 in each stator teeth groove 52, there are 12 permanent magnets 2.
DC excitation winding 3 in each stator teeth groove 52 is identical, the DC excitation in two neighboring stator teeth groove 52 around 3 opposite polarities of group.
Rotor 1 and stator 5 are formed by silicon steel plate packing.
Permanent magnet 2 is the neodymium iron boron or ferrite for magnetizing.
The side of permanent magnet 2 is with the surface of stator poles 51 at grade.
2 times for the arc length of 51 end of stator poles of the spacing of adjacent 51 end of stator poles.
Rotor 1 outwards has rotor pole 11, and the arc length of 11 end of rotor pole is equal to or more than the arc length of 51 end of stator poles.
The span that motor of the present utility model has fixed Double Layer Winding, coil is equal to a stator separation, each Stator poles have a pair of coils.It is in series by four armature winding per phase winding, and 12 DC excitation windings is then successively Series connection forms single winding.All of coil has the equal number of number of turn and groove interval, i.e., stator slot be divided into four it is identical Region.While using double salient-pole electric machine structural advantage, increase the excitation effect of permanent magnet, improve power of motor density. DC excitation winding produces alternate magnetic flux, and permanent magnet is positioned at the opening of the stator slot between two stator poles, its magnetization It is oriented parallel to stator slot circumferential edges.And its magnetic flux path is contrary with the DC excitation magnetic flux path in same stator slot.
The characteristics of three-phase hybrid excitation motor of the present utility model is:Have in each stator teeth groove DC excitation around Group, permanent magnet are inserted in stator slot, i.e., between two stator poles, the placement of permanent magnet causes the magnetic flux path and direct current of permanent magnet Magnetic flux path is parallel.As permanent magnet is not on the path of motor main flux, therefore, the demagnetization problem of permanent magnet also may be used Effectively to be solved.Using the regulating power of DC excitation, further can improve makes the magnetic flux regulating power of motor.Drive Streaming current is symmetrical three phase sine electric current, and is identical per the magnetic flux path of phase, its magnetic linkage and back emf waveform pair Claim, multiple harmonic can be eliminated, obtain the magnetic linkage and back emf waveform of sine.Torque pulsation is greatly lowered, torque is lifted Density.The electric machine structure is novel, dependable performance, and control is simple, add after permanent magnet can lifting motor torque output, reduce electricity Machine copper loss, simultaneously because riding position relation, it is to avoid the demagnetization problem of permanent magnet.Improve reliability and the utilization of permanent magnet Rate, greatly promotes motor electromagnetic compatibility.
Shown in Fig. 2 a- Fig. 2 c, basic functional principle of the present utility model is:Such as Fig. 2 a, if only permanent magnet excitation, permanent magnetism The magnetic flux that body is produced will not be connected with rotor, and magnetic flux size will not change with the change of rotor-position.It is constant which produces Magnetic flux is in salient pole stator tooth and stator yoke, therefore does not have the generation of induction electromotive force.Such as Fig. 2 b, if no permanent magnet, Only direct-flow magnet exciting coil effect, its magnetic flux for producing will be by air gap connecting stator and rotor.As rotor is rotated, line Induction electromotive force will be caused in circle.In theory, electromagnetic energy will converts in motor.Such as Fig. 2 c, if permanent magnet and AC line Circle winding is acted on simultaneously, and the magnetic flux produced from two sources more contributes to induction electromotive force by air gap insertion rotor Produce and change.Due to the electromagnetic attraction between two exciting fields, the magnetic flux that now permanent magnet is produced also will be connected by air gap Rotor.And the magnetic flux of permanent magnet connection rotor depends on the degree of saturation of the size and magnetic circuit of DC excitation electric current.
Shown in Fig. 3 is that demagnetization of the three-phase hybrid excitation flux switch motor in diverse location affects schematic diagram, permanent magnetism The demagnetization problem of body depends primarily on the temperature during operation of the size and motor of demagnetization current.Shown New-type electric machine, permanent magnet It is positioned between stator poles, and in the magnetic flux edge of armature supply and DC excitation electric current.The N of rotor pole and permanent magnet When pole or S extremely relative, when magnetic flux flows into rotor pole by stator poles, through the N poles of permanent magnet, when magnetic flux is flowed into by rotor pole During stator poles, through the S poles of permanent magnet.It is roughly the same with the intrinsic flow direction of permanent magnet, even if operating in hot environment, forever The demagnetization probability of magnet is also greatly reduced.Substantially solve the problems, such as the demagnetization of permanent magnet.
The above is only preferred implementation of the present utility model, it should be pointed out that:For the common skill of the art For art personnel, on the premise of without departing from this utility model principle, some improvements and modifications can also be made, these improve and Retouching also should be regarded as protection domain of the present utility model.

Claims (7)

1. a kind of three-phase hybrid excitation flux switch motor structure, including rotor, stator, permanent magnet, DC excitation winding, three-phase Armature winding, it is characterised in that:The stator (5) and rotor (1) are salient pole tooth slot structure, and stator (5) is fixed including several Sub- pole (51), is stator teeth groove (52) between adjacent stator pole (51), is provided with two groups of windings in each stator teeth groove (52), Respectively threephase armature winding (4) and DC excitation winding (3);Threephase armature winding (4) and DC excitation winding (3) are collection Middle winding;The permanent magnet (2) is several, is respectively arranged at the opening of each stator teeth groove (52), and a stator poles (51) permanent magnet (2) on both sides is same polarity.
2. three-phase hybrid excitation flux switch motor structure according to claim 1, it is characterised in that:Each described is fixed DC excitation winding (3) in sub- teeth groove (52) is identical, DC excitation winding (3) polarity in two neighboring stator teeth groove (52) On the contrary.
3. three-phase hybrid excitation flux switch motor structure according to claim 1, it is characterised in that:Described rotor (1) form by silicon steel plate packing with stator (5).
4. three-phase hybrid excitation flux switch motor structure according to claim 1, it is characterised in that:Described permanent magnet (2) it is the neodymium iron boron or the ferrite that magnetize.
5. the three-phase hybrid excitation flux switch motor structure according to claim 1 or 4, it is characterised in that:It is described forever The side of magnet (2) is with the surface of stator poles (51) at grade.
6. three-phase hybrid excitation flux switch motor structure according to claim 1, it is characterised in that:Adjacent stator poles (51) 2 times for the arc length of stator poles (51) end of the spacing of end.
7. three-phase hybrid excitation flux switch motor structure according to claim 1, it is characterised in that:The rotor (1) Outwards there is rotor pole (11), the arc length of rotor pole (11) end is equal to or more than the arc length of stator poles (51) end.
CN201620387325.4U 2016-04-29 2016-04-29 Three -phase mixed excitation magnetic flow switches motor structure Withdrawn - After Issue CN206135564U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
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Application Number Priority Date Filing Date Title
CN201620387325.4U CN206135564U (en) 2016-04-29 2016-04-29 Three -phase mixed excitation magnetic flow switches motor structure

Publications (1)

Publication Number Publication Date
CN206135564U true CN206135564U (en) 2017-04-26

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105790456A (en) * 2016-04-29 2016-07-20 南京航空航天大学 Three-phase mixed excitation magnetic flux switching motor structure
CN110545021A (en) * 2019-09-26 2019-12-06 哈尔滨工业大学 mixed excitation multi-phase reluctance motor and power generation system
CN111555483A (en) * 2020-06-04 2020-08-18 南通大学 Double-layer stator module type magnetic regulating motor
CN111555483B (en) * 2020-06-04 2021-09-03 南通大学 Double-layer stator module type magnetic regulating motor

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105790456A (en) * 2016-04-29 2016-07-20 南京航空航天大学 Three-phase mixed excitation magnetic flux switching motor structure
CN105790456B (en) * 2016-04-29 2018-02-06 南京航空航天大学 A kind of three-phase hybrid excitation flux switch motor structure
CN110545021A (en) * 2019-09-26 2019-12-06 哈尔滨工业大学 mixed excitation multi-phase reluctance motor and power generation system
CN110545021B (en) * 2019-09-26 2020-11-10 哈尔滨工业大学 Mixed excitation multi-phase reluctance motor and power generation system
CN111555483A (en) * 2020-06-04 2020-08-18 南通大学 Double-layer stator module type magnetic regulating motor
CN111555483B (en) * 2020-06-04 2021-09-03 南通大学 Double-layer stator module type magnetic regulating motor

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Granted publication date: 20170426

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