CN201956856U - Mixed excitation permanent-magnet motor with quintuple harmonic excitation - Google Patents
Mixed excitation permanent-magnet motor with quintuple harmonic excitation Download PDFInfo
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- CN201956856U CN201956856U CN2010206704829U CN201020670482U CN201956856U CN 201956856 U CN201956856 U CN 201956856U CN 2010206704829 U CN2010206704829 U CN 2010206704829U CN 201020670482 U CN201020670482 U CN 201020670482U CN 201956856 U CN201956856 U CN 201956856U
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Abstract
A mixed excitation permanent-magnet motor with quintuple harmonic excitation comprises a shell (1) and is characterized in that a stator and a rotor are mounted in the shell (1), wherein the stator comprises a stator iron core (2) and stator winding (3); the rotor comprises a permanent magnet (4), a rotating shaft (6), a rotor iron core (7) and a rotor winding (8); stator windings (3) are distributed in grooves (9) formed on the stator iron core (2) along the circumferential direction; the permanent magnet (4) and the rotor winding (8) are arranged on the rotor iron core (7); and the rotor winding (8) comprises a rotor quintuple harmonic winding (10) and a rotor excitation winding (11). Without needing an electric brush, a connecting ring and a voltage regulator, the mixed excitation permanent-magnet motor provided by the utility model has the advantages that the structure is simple, the operation is reliable, the response is fast, the power density is higher than that of the common permanent-magnet motor, an axial magnetic circuit and an additive air gap do not exist, the magnetic circuit is short, and the high efficiency of the permanent-magnet motor is kept.
Description
Technical field
The utility model belongs to technical field of motors, particularly a kind of magneto.
Background technology
That magneto has is simple in structure, reliable, efficient is high and the power density advantages of higher.Therefore, magneto is used very extensive in fields such as industrial, civilian, military affairs and Aero-Space.Weak point is magneto air-gap field adjusting difficulty, and this has limited the extensive use of magneto to a certain extent.Yet electric excitation synchronous motor can be regulated air-gap field easily by the size of regulating exciting current in the excitation winding.
The characteristics of composite excitation permanent magnet motor are to have two kinds of magnetic potential sources in a motor simultaneously: permanent magnetic potential and electric excitation magnetic potential.The magnetic field that the electricity excitation magnetic potential produces mainly is to be used for the magnetic field that permanent magnetic potential produces is regulated, thereby the composite excitation permanent magnet motor combines magneto high efficiency and high power density and electric excitation synchronous motor air-gap field advantage easy to adjust.At present, the composite excitation permanent magnet motor has become a research focus of machine field, and existing composite excitation permanent magnet motor scheme has nearly 30 kinds.In these schemes, some scheme permanent magnetic potential and electric excitation magnetic potential are connected on magnetic circuit, and the magnetic flux path that electric excitation magnetic potential produces will pass through permanent magnet, cause excitation loss to increase, and electric efficiency reduces, and irreversible degaussing takes place permanent magnet easily.Some scheme radial magnetic field and axial magnetic field coexistence, thereby the motor axial length is unsuitable oversize.Some scheme rotor is divided into two sections or rotor and all is divided into two sections, can regard the compound of a magneto and an electric excitation synchronous motor as, thereby reduce the power density of motor.There is additional air gap in some scheme, thereby has reduced efficiency of motor, and makes electric machine structure become complicated.But a class composite excitation permanent magnet motor scheme is arranged, and stator is identical with common alternating current machine, existing permanent magnet on the rotor, excitation winding is arranged again, the magnetic flux flow that both produce has improved the utilance of material through identical electric machine iron core, has kept the advantage of magneto high power density.In addition, there are not axial magnetic field and additional air gap in the motor, kept the high efficiency advantage of magneto.But because excitation winding is on rotor, make excitation winding and the outside mechanical devices such as still needing brush and slip ring that is connected, thereby reduced the motor reliability of operation, the while has also increased the maintenance of motor cost.
The utility model content
The purpose of this utility model is at above-mentioned the deficiencies in the prior art, and a kind of composite excitation permanent magnet motor that does not need the employing quintuple harmonic excitation of brush and collector ring is provided.
The technical solution of the utility model is to realize (referring to accompanying drawing 1, accompanying drawing 2) like this: the composite excitation permanent magnet motor that adopts quintuple harmonic excitation, comprise a casing [1], stator of being made up of stator core [2], stator winding [3] and the rotor of being made up of permanent magnet [4], rotating shaft [6], rotor core [7], rotor winding [8] are housed in the casing [1]; Stator winding [3] is distributed in the groove of along the circumferential direction offering in the stator core [2] [9], is furnished with permanent magnet [4] and rotor winding [8] in the rotor core [7]; Rotor winding [8] is made up of rotor quintuple harmonics winding [10] and rotor-exciting winding [11].
Described stator winding [3] can be the three-phase winding, also can be single-phase or polyphase windings; Integer groove winding can be, also fractional slot winding can be.
Described rotor quintuple harmonics winding [10] can be the three-phase winding, also can be single-phase or polyphase windings.
Described rotor-exciting winding [11] can be to concentrate winding, also can be distributed winding.
The quantity of described rotor permanent magnet [4] can require to be provided with according to design of electrical motor, and its number of poles is identical with the number of poles of stator winding (3).
Described rotor is in stator or be positioned over outside the stator.
Described rotor permanent magnet [4] can adopt radial structure, cutting orientation structure, and mixed structure.
Permanent magnet [4] is not only arranged on the rotor of the composite excitation permanent magnet motor of quintuple harmonic excitation of the present utility model, and rotor-exciting winding [11] and rotor quintuple harmonics winding [10] have been arranged in the rotor core [7], arrange a cover stator winding [3] on the stator, be used for energy converting between mechanical.The number of pole-pairs of rotor is identical with the number of pole-pairs of stator winding [3].Stator winding [3] is corresponding with permanent magnet [4], produces the electromagnetic induction effect, is equivalent to the synchronous generator of a rotary pole.Rectification obtains direct current to the electromotive force of rotor quintuple harmonics winding [10] induction through rotating rectifier, direct current is provided for the rotor-exciting winding [11] in the rotor core [7], the harmonic wave electromotive force of induction can change automatically along with the variation of motor load in the rotor quintuple harmonics winding [10], thereby reaches the purpose of regulating magnetic field and stator winding [3] voltage.
Composite excitation permanent magnet motor of the present utility model has following characteristics:
1, motor does not need brush, collector ring and voltage regulator, and is simple in structure, reliable, and response speed is fast.
2, close with common permanent magnet motor structure, have higher power density.
3, do not have axial magnetic circuit and additional air gap, magnetic circuit is short, has kept the high efficiency of magneto.
Description of drawings
Fig. 1 is the A-A sectional view of Fig. 2, for adopting the composite excitation permanent magnet electric machine structure schematic diagram of quintuple harmonic excitation.Wherein 1 is casing, and 2 are stator core, and 3 is stator winding, and 4 is permanent magnet, and 5 is bearing, and 6 are rotating shaft, and 7 are rotor core, and 8 is the rotor winding.
Fig. 2 is a motor sectional view among Fig. 1, and is very routine with 4.Wherein 2 are stator core, and 3 is stator winding, and 4 is permanent magnet, and 6 are rotating shaft, and 7 are rotor core, and 9 for arranging the groove of winding in the stator core, and 10 is rotor quintuple harmonics winding, and 11 is the rotor-exciting winding.
Fig. 3 is a B-B part further explanatory drawings among Fig. 2, for convenience, expands into straight line and draws.Wherein 2 are stator core, and 3 is stator winding, and 4 is permanent magnet, and 6 are rotating shaft, and 7 are rotor core, and 9 is the groove of along the circumferential direction offering in the stator core, and 10 is rotor quintuple harmonics winding, and 11 is the rotor-exciting winding.Fundamental wave magnetic field and quintuple harmonics magnetic-field component that the stator winding composite magnetic power that also drawn among the figure produces.
Fig. 4 circuit theory diagrams that to be rotor quintuple harmonics winding link through rectifier bridge and rotor-exciting winding.
Embodiment
Below in conjunction with the drawings and specific embodiments the utility model is described in further detail.
Embodiment.
By Fig. 1,2 as can be known, the composite excitation permanent magnet motor of quintuple harmonic excitation of the present utility model comprises casing 1, disposes stator core 2 in the casing 1, along the circumferential direction slots 9 in the stator core 2, is furnished with stator winding 3 in the groove 9.Casing 1 maintains static with stator core 2.Dispose rotating shaft 6 in the casing 1, rotating shaft 6 is connected with casing 1 by bearing 5.Configuration rotor core 7 is furnished with permanent magnet 4 and rotor winding 8 in the rotating shaft 6 in the rotor core 7, and rotor winding 8 is made up of rotor quintuple harmonics winding 10 and rotor-exciting winding 11.Permanent magnet 4, rotor winding 8 can rotate in stator core 2 along with rotating shaft 6 with rotor core 7.
Operation principle of the present utility model is: when empty load of motor moved, rotating shaft 6 was to rotate with leg speed, and rotor permanent magnet 4 is set up magnetic field, the unloaded electromotive force of induction synchronizing frequency in stator winding 3, and this electromotive force regularly keeps constant at rotating speed one.Behind inductive load on the motor band, because the demagnetizing effect of armature reaction makes the electromotive force of induction in stator winding 3 descend.In order to regulate the electromotive force of stator winding 3, rotor quintuple harmonics winding 10 and rotor-exciting winding 11 in rotor core 7, have been arranged.On the motor band after the load, the harmonic field that quintuple harmonics magnetic potential component in the stator composite magnetic power produces can induce the harmonic wave electromotive force in rotor quintuple harmonics winding 10, be input to after the rectification in the rotor-exciting winding 11, the magnetic field that rotor-exciting winding 11 produces can remedy because the armature reaction demagnetizing effect makes the reduction of motor windings induced electromotive force.When load increased, the quintuple harmonics magnetic potential component in the stator composite magnetic power also increased, and the induced electromotive force of rotor quintuple harmonics winding 10 is also along with increase.Therefore, the size of rotor quintuple harmonics winding 10 induced electromotive forces can change automatically along with the variation of load, reaching the effect of regulating magnetic field and winding induced electromotive force, and has realized brushless and collector ring and no-voltage adjuster.
Specify the principle of rotor quintuple harmonics winding 10 induced electromotive forces below with reference to Fig. 3.Describe with a pair of very example, magnetic field fundametal compoment and quintuple harmonics component that the stator winding composite magnetic power produces have drawn among Fig. 3, when rotor core 7 when rotating with leg speed, the relative rotor core of the fundametal compoment in magnetic field 7 is static, can not induce electromotive force in the quintuple harmonics winding 10 of rotor; And the quintuple harmonics component relative stator in magnetic field is with 1/5 times same leg speed rotation, its direction is opposite with the rotor direction of rotation, therefore the frequency of induced electromotive force is six times of stator winding 3 first-harmonic induced electromotive forces in rotor quintuple harmonics winding 10, and the size of rotor quintuple harmonics winding 10 induced electromotive forces can change automatically along with the variation of load.
The AC electromotive force of rotor quintuple harmonics winding 10 inductions obtains direct current through over commutation, and direct current is passed in the rotor-exciting winding 11 and realizes excitation, and circuit diagram as shown in Figure 4.
The DC excitation electric current flows through rotor-exciting winding 11 sets up the magnetic field static with respect to rotor core 7, this magnetic field is to rotate with leg speed with respect to stator core 2 and stator winding 3, the electromotive force of induction synchronizing frequency in stator winding 3, stator winding 3 links with external circuit just can outwards export energy.
When the utility model was used as generator, stator winding 3 linked to each other with load, and during as motor, stator winding 3 links to each other with driving power.
Rotor quintuple harmonics winding 10 can be the three-phase winding, also can be single-phase or polyphase windings.
Rotor-exciting winding 11 can be to concentrate winding, also can be distributed winding.
Rectification circuit can adopt bridge full-wave rectifier, also can be halfwave rectifier.
Claims (8)
1. the composite excitation permanent magnet motor of quintuple harmonic excitation, comprise a casing (1), it is characterized in that being equipped with in the casing (1) stator of forming by stator core (2), stator winding (3) and the rotor of forming by permanent magnet (4), rotating shaft (6), rotor core (7), rotor winding (8), stator winding (3) is distributed in the groove of along the circumferential direction offering in the stator core (2) (9), be furnished with permanent magnet (4) and rotor winding (8) in the rotor core (7), rotor winding (8) is made up of rotor quintuple harmonics winding (10) and rotor-exciting winding (11).
2. motor according to claim 1 is characterized in that described stator winding (3) is three phase windings, single-phase or polyphase windings.
3. motor according to claim 1 is characterized in that described stator winding (3) is integer groove winding or fractional slot winding.
4. motor according to claim 1 is characterized in that described rotor quintuple harmonics winding (10) is three phase windings, single-phase or polyphase windings.
5. motor according to claim 1 is characterized in that described rotor-exciting winding (11) is for concentrating winding or distributed winding.
6. motor according to claim 1 is characterized in that described rotor is in stator or be positioned over outside the stator.
7. motor according to claim 1 is characterized in that the quantity of described permanent magnet (4) requires to be provided with according to design of electrical motor, and its number of poles is identical with the number of poles of stator winding (3).
8. motor according to claim 1 is characterized in that described permanent magnet (4) adopts radial structure, cutting orientation structure or mixed structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206704829U CN201956856U (en) | 2010-12-09 | 2010-12-09 | Mixed excitation permanent-magnet motor with quintuple harmonic excitation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206704829U CN201956856U (en) | 2010-12-09 | 2010-12-09 | Mixed excitation permanent-magnet motor with quintuple harmonic excitation |
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| Publication Number | Publication Date |
|---|---|
| CN201956856U true CN201956856U (en) | 2011-08-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206704829U Expired - Fee Related CN201956856U (en) | 2010-12-09 | 2010-12-09 | Mixed excitation permanent-magnet motor with quintuple harmonic excitation |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102013779A (en) * | 2010-12-09 | 2011-04-13 | 南昌大学 | Hybrid excitation permanent magnet motor of quintuple harmonic excitation |
| CN104682648A (en) * | 2015-02-02 | 2015-06-03 | 南昌大学 | Biharmonic excitation mixed excitation permanent magnet motor |
| RU213855U1 (en) * | 2022-07-19 | 2022-09-30 | Федеральное Государственное Бюджетное Образовательное Учреждение Высшего Образования "Новосибирский Государственный Технический Университет" | Variable two-zone AC drive with synchronous motor |
-
2010
- 2010-12-09 CN CN2010206704829U patent/CN201956856U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102013779A (en) * | 2010-12-09 | 2011-04-13 | 南昌大学 | Hybrid excitation permanent magnet motor of quintuple harmonic excitation |
| CN102013779B (en) * | 2010-12-09 | 2012-11-07 | 南昌大学 | Hybrid excitation permanent magnet motor of quintuple harmonic excitation |
| CN104682648A (en) * | 2015-02-02 | 2015-06-03 | 南昌大学 | Biharmonic excitation mixed excitation permanent magnet motor |
| CN104682648B (en) * | 2015-02-02 | 2017-07-11 | 南昌大学 | The hybrid excitation permanent magnet motor of biharmonic excitation |
| RU213855U1 (en) * | 2022-07-19 | 2022-09-30 | Федеральное Государственное Бюджетное Образовательное Учреждение Высшего Образования "Новосибирский Государственный Технический Университет" | Variable two-zone AC drive with synchronous motor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110831 Termination date: 20111209 |