CN100384058C - Dual-feeding mixed excitation axial magnetic field magento motor - Google Patents

Dual-feeding mixed excitation axial magnetic field magento motor Download PDF

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Publication number
CN100384058C
CN100384058C CNB2005101120919A CN200510112091A CN100384058C CN 100384058 C CN100384058 C CN 100384058C CN B2005101120919 A CNB2005101120919 A CN B2005101120919A CN 200510112091 A CN200510112091 A CN 200510112091A CN 100384058 C CN100384058 C CN 100384058C
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CN
China
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magnetic
motor
rotor
stator
dual
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CNB2005101120919A
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Chinese (zh)
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CN1808846A (en
Inventor
黄苏融
谢国栋
张琪
钱慧杰
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上海大学
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Publication of CN100384058C publication Critical patent/CN100384058C/en

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Abstract

The present invention relates to a dual-feeding mixed excitation axial magnetic field permanent-magnet motor, which comprises a rotor, and a left and a right stators which are arranged at both sides of the rotor, wherein the magnetic pole of the rotor is divided into an inner and an outer rings by a magnetism separation zone; the outer ring is an iron core pole and the inner ring is a permanent magnet with alternating polarity. The inner side of the external tooth of two stator cores is provided with magnetic field control windings; an armature main winding is arranged around the inner and the external teeth. Through changing the amplitude value and the direction of the electric current in the magnetic field control winding, the present invention regulates the total magnetic flux size of the air gap of the motor to achieve the goal of changing the size of induction electric potential.

Description

Dual-feeding mixed excitation axial magnetic field magento motor
Technical field
The present invention relates to a kind of magneto, particularly a kind of dual-feeding mixed excitation axial magnetic field magento motor.
Background technology
After entering nineteen nineties, the axial magnetic field permanent magnet motor has caused people's attention and interest with advantages such as its high efficiency, high density, low heat loads, and is applied to fields such as automobile current generator and electric vehicles wheel electrical machine.But axial magnetic field permanent magnet motor-field substantially constant generally all is again the surface-type structure, and the reactance of friendship, d-axis is equal substantially, when the motor high-speed cruising, is difficult to weak magnetic control system is carried out in magnetic field.Make this motor in that to make motor when operation constant-power speed regulation scope little, when making generator operation, along with the variation of motor speed is difficult to the constant voltage generating.The uncontrollable shortcoming of axial magnetic field permanent magnet motor-field has become the bottleneck that this motor further develops.For pursuit motor high efficiency, high density, low-heat is negative and the controlled effect in magnetic field, patent of the present invention proposes a kind of duplex feeding composite excitation axial permanent magnetic motor.
Summary of the invention
The purpose of patent of the present invention is to provide a kind of can regulate motor gas-gap magnetic field simply, flexibly, economically, changes coil-induced electromotive force, and can avoid permanent magnet to produce the dual-feeding mixed excitation axial magnetic field magento motor of irreversible degaussing.
For achieving the above object, major technique design of the present invention is: at two stators, in the axial direction electric machine of single rotor, increase by two cover magnetic field control windings, be installed in the inboard of the external tooth of left and right two stator cores respectively, as shown in Figure 3.By changing current amplitude and the direction in the magnetic field control winding, regulate motor gas-gap total magnetic flux size, reach the purpose that changes the induced potential size.
According to the foregoing invention design, the present invention adopts following technical proposals:
A kind of dual-feeding mixed excitation axial magnetic field magento motor, comprise a rotor and place the rotor both sides about two stators, the magnetic pole that it is characterized in that rotor is by being divided into inside and outside two circles every the magnetic region, the outer ring is the iron core utmost point, inner ring is the permanent magnet of alternating polarity; The tooth of stator is having an auxiliary tank with rotor every corresponding position, magnetic region, stator tooth is divided into inside and outside tooth, the magnetic field of two stator cores control winding is by stator radial slot, auxiliary tank and the space coiling of stator cylindrical side, and the armature main winding around inside and outside tooth on each tooth of stator.
The structure of above-mentioned rotor is: arrange two circle trapezoidal holes in the stainless steel frame that is fixed in the rotating shaft, embed the permanent magnet of described alternating polarity in the inner ring hole, cycle hole is embedded in ferrimagnet, becomes the described iron core utmost point, is described every the magnetic region in the middle of inside and outside two circles.
The number of the permanent magnet of above-mentioned rotor and the iron core utmost point equates with the number of poles of motor.
Operation principle is:
Feed the polyphase alternating current of respective magnitudes and phase place in the armature main winding, be used to produce the required friendship axle of motor (q axle) current weight, the size of control motor torque; And control the polyphase alternating current that feeds respective magnitudes and phase place in the winding in magnetic field, to produce required d-axis (d axle) electric current, the size of control excitation field.Because the magnetic permeability of permanent magnetic material is almost identical with air, the magneto resistive ratio permanent-magnet pole of the iron core utmost point much smaller is so the magnetic flux that magnetic field control winding produces mainly forms the loop by the iron core utmost point, air gap and stator core.Change the amplitude and the direction of magnetic field control winding current, can effectively control the size and Orientation of iron core pole field.In addition, the armature main winding is linkage permanent-magnet pole magnetic flux and iron core utmost point magnetic flux simultaneously, after iron core utmost point magnetic flux changes, can cause the close variation of the average magnetic of air gap, has also changed the size of armature main winding internal induction electromotive force simultaneously.
Can regulate the ratio of permanent magnet magnetic flux and the amplitude of the iron core utmost point magnetic flux during design on demand, total magnetic flux can be easily realized regulating between minimum value (amplitude of permanent magnet magnetic flux and iron core utmost point magnetic flux poor) and maximum (the amplitude sum of permanent magnet magnetic flux and iron core utmost point magnetic flux).When the amplitude of iron core utmost point magnetic flux was designed to equal the permanent magnet magnetic flux, the total magnetic flux minimum value can be zero in theory.
The present invention compared with prior art, it has following conspicuous outstanding substantive distinguishing features and remarkable advantage:
1. the magnetic field control method of this patent proposition is because magnetic direction is two-way adjustable, and the amplitude excursion is wide.
2. the magnetic field Principles of Regulation and the complete same direct current machine of adjusting function of the dual-feeding mixed excitation axial magnetic field magento motor of this patent proposition can realize easily that the decoupling zero of armature supply (handing over axle) and magnetic flux (d-axis) is regulated.
3. because the magnetic flux that magnetic field control winding produces forms the loop by the iron core utmost point, air gap and stator core, can not produce the harm of demagnetization, improve the reliability of motor permanent magnet.
4. the stator plane iron core yoke of the right and left not only is convenient to the cooling of electric machine iron core and winding, and can obtain maximum radiating surface, is particularly useful for wheel electrical machine; On the other hand, the plane cooling structure is convenient to implement electron power module and motor integration cooling structure.
Description of drawings
Fig. 1 is the dual-feeding mixed excitation axial magnetic field magento motor structural representation.
Fig. 2 is a dual-feeding mixed excitation axial magnetic field magento motor rotor structure schematic diagram.
Fig. 3 is a dual-feeding mixed excitation axial magnetic field magento motor stator structure partial schematic diagram.
Embodiment
Be described in further detail below in conjunction with the embodiment of accompanying drawing dual-feeding mixed excitation axial magnetic field magento motor:
1. rotor stainless steel frame 11 has dug a plurality of trapezoidal holes, form inside and outside two circle holes, the staggered utmost point that embeds of inner ring hole is gone into opposite polarity permanent magnet 12, cycle hole embeds the iron core utmost point 13, the iron core utmost point 13 equates with motor pole number with the number of permanent-magnet pole 12, stainless steel between the inside and outside two circle holes is every magnetic region 15, to reduce the leakage field between the permanent magnet 12 and the iron core utmost point 13, specifically as shown in Figure 2.
2. two stators 3,7 are having an auxiliary tank 14 with rotor respectively every corresponding position, magnetic region 15 about, and the radial width of groove is with consistent every magnetic region 15, and the degree of depth is the same with stator slot.Auxiliary tank 14 is divided into inside and outside side channel with stator slot, and they are equal-width groove, but the groove width difference, the width of inner side slot is directly determined by the number of turn and the line of armature main winding 4,8; The width of outer side slot is by the common decision of the number of turn and line footpath of magnetic field control winding 5,9 and armature main winding 4,8.Span be 1 armature main winding 4,8 around inside and outside tooth on each tooth of stator.Span is that 5,9 of 1 magnetic field control windings form by stator slot, auxiliary tank 14 and the coiling of stator core cylindrical side, specifically as shown in Figure 3.
3. when motor does not need magnetic assist or degaussing, magnetic field control winding 5,9 need not feed electric current, have only this moment permanent magnet 12 to produce magnetic flux in the motor, magnetic flux path is: the tooth of the tooth of rotor permanent-magnet pole 12 → right air gap → right stator 7 and yoke portion → right air gap → adjacent rotors permanent-magnet pole 12 → left air gap → left stator 3 and yoke portion → left air gap → rotor permanent-magnet pole 12 forms the loop.
4. when motor needed magnetic assist, magnetic field control winding 5,9 fed the electric current of a certain phase place, guaranteed that the iron core utmost point magnetic flux that produces is identical with the same flow direction that extremely descends permanent magnet 12 to produce, the magnetic flux decision that current amplitude is increased by need.The path in DC excitation magnetic field is: the tooth of the iron core utmost point 13 → left air gap → left stator 3 of the tooth of the iron core utmost point 13 → right air gap → right stator 7 and yoke portion → right air gap → adjacent and yoke portion → left air gap → iron core utmost point 13 forms loops.At this moment, total magnetic flux is permanent magnet 12 magnetic fluxs and the iron core utmost point 13 magnetic flux amplitude sums.
5. when motor needs degaussing, feed above-mentioned 4 rightabout electric currents and get final product.Total magnetic flux is amplitude poor of permanent magnet 12 magnetic fluxs and the iron core utmost point 13 magnetic fluxs.

Claims (3)

1. dual-feeding mixed excitation axial magnetic field magento motor, comprise a rotor (6) and place rotor (6) both sides about two stators (3,7), the magnetic pole that it is characterized in that rotor (6) is by being divided into inside and outside two circles every magnetic region (15), the outer ring is the iron core utmost point (13), and inner ring is the permanent magnet (12) that alternating polarity changes; The tooth of stator (3,7) is having an auxiliary tank (14) with rotor (6) every magnetic region (15) corresponding position, stator tooth is divided into inside and outside tooth, the unshakable in one's determination magnetic field control winding (5,9) of two stators (3,7) is by stator radial slot, auxiliary tank and the space coiling of stator cylindrical side, and armature main winding (4,8) around inside and outside tooth on each tooth of stator (3,7).
2. dual-feeding mixed excitation axial magnetic field magento motor according to claim 1, the structure that it is characterized in that described rotor (6) is: be arranged with two circle trapezoidal holes in the stainless steel frame (11) that is fixed in the rotating shaft (1), be described in the middle of inside and outside two circles every magnetic region (15), inner ring hole is embedded in the permanent magnet (12) that described alternating polarity changes, cycle hole is embedded in ferrimagnet, becomes the described iron core utmost point (13).
3. dual-feeding mixed excitation axial magnetic field magento motor according to claim 1 and 2 is characterized in that the permanent magnet (12) of described rotor (6) and the number of the iron core utmost point (13) equate with the number of poles of motor.
CNB2005101120919A 2005-12-27 2005-12-27 Dual-feeding mixed excitation axial magnetic field magento motor CN100384058C (en)

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CN100399676C (en) * 2006-08-31 2008-07-02 哈尔滨工业大学 Axial flux structure compound permanent-magnet machine
CN100464480C (en) * 2006-10-31 2009-02-25 哈尔滨工业大学 Composite permanent magnet motor with shaft radial-radical magnetic flux structure
CN102237765A (en) * 2011-04-21 2011-11-09 江苏磁源动力科技有限公司 Double-stator planar motor
CN103187814A (en) * 2011-12-30 2013-07-03 华锐风电科技(集团)股份有限公司 Permanent magnet transverse magnetic flow motor
CN103546006A (en) * 2013-10-25 2014-01-29 金坛市微特电机有限公司 Double-stator axial magnetic field permanent magnet brushless direct-current motor
CN104811002A (en) * 2015-04-27 2015-07-29 华侨大学 High power density permanent magnet brushless double-feed electric motor in novel structure
CN105811319B (en) * 2016-04-29 2017-08-25 国网山东省电力公司龙口市供电公司 A kind of Digital Electric stringing wire tensioning device
CN108288881B (en) * 2017-01-09 2020-05-22 香港理工大学 Permanent magnet motor
CN107248792B (en) * 2017-08-09 2020-01-31 湘潭大学 Radial magnetizing double-winding transverse flux permanent magnet generator
CN109274240B (en) * 2018-09-30 2020-11-27 沈阳工业大学 Composite amorphous alloy axial flux motor
CN109217597B (en) * 2018-10-22 2020-10-30 沈阳工业大学 Composite excitation amorphous alloy axial flux motor
CN111884368B (en) * 2019-11-22 2021-05-18 山东精创磁电产业技术研究院有限公司 Axial magnetic field motor
CN111509938A (en) * 2020-03-24 2020-08-07 江苏大学 Multi-working-mode double-stator magnetic field modulation motor

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN87217235U (en) * 1987-12-30 1988-07-27 上海现代信息技术研究所 Axial air-gap synchronous motor with consentric construction
CN2279741Y (en) * 1996-10-18 1998-04-22 向家盈 Brushless double-magnetic gap energy-saving DC motor
CN1458730A (en) * 2003-05-21 2003-11-26 哈尔滨工业大学 Axial exciting mixed reluctance motor
US6891301B1 (en) * 2003-11-12 2005-05-10 Ut-Battelle Llc Simplified hybrid-secondary uncluttered machine and method

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN87217235U (en) * 1987-12-30 1988-07-27 上海现代信息技术研究所 Axial air-gap synchronous motor with consentric construction
CN2279741Y (en) * 1996-10-18 1998-04-22 向家盈 Brushless double-magnetic gap energy-saving DC motor
CN1458730A (en) * 2003-05-21 2003-11-26 哈尔滨工业大学 Axial exciting mixed reluctance motor
US6891301B1 (en) * 2003-11-12 2005-05-10 Ut-Battelle Llc Simplified hybrid-secondary uncluttered machine and method

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