CN104734438A - Axial-field permanent magnet compensated impulse generator with double contra-rotating rotors - Google Patents
Axial-field permanent magnet compensated impulse generator with double contra-rotating rotors Download PDFInfo
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- CN104734438A CN104734438A CN201510190785.8A CN201510190785A CN104734438A CN 104734438 A CN104734438 A CN 104734438A CN 201510190785 A CN201510190785 A CN 201510190785A CN 104734438 A CN104734438 A CN 104734438A
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- left rotor
- yoke
- stator
- stator disc
- laps
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K16/00—Machines with more than one rotor or stator
- H02K16/02—Machines with one stator and two or more rotors
Abstract
The invention relates to an axial-field permanent magnet compensated impulse generator with double contra-rotating rotors and belongs to the technical field of an impulse generator. The axial-field permanent magnet compensated impulse generator comprises a left rotor, a stator disc, a right rotor, two end caps and a shell. The left rotor, the stator disc and the right rotor are sequentially arranged in a hollow-square-shaped space formed by the two end caps and the shell along an axial direction. The left rotor along with one of the end caps and the right rotor along with the other end cap are in mirror symmetry on two sides of the stator disc. An air gap is formed between the left rotor and the stator disc, and another air gap is formed between the stator disc and the right rotor. The left rotor comprises a left rotor disc yoke, a left rotor permanent magnet, a left rotor compensation disc, a left rotor bandage, a left rotor shaft and a left rotor support. The stator disc comprises a stator support and a stator disc yoke. The double contra-rotating rotor compensated impulse generator is capable of solving the problem that the sizes of two motors are enlarged due to the fact that the two motors are arranged side by side and enabled to rotate reversely to counteract electromagnetic torque impact generated by the existing impulse generator during discharging.
Description
Technical field
The present invention relates to axial magnetic field permanent magnet to turning birotor compensating pulse electric generator, belonging to impulse generator technical field.
Background technology
High power pulsed source can provide By Impulsive Current in short-term, is the vitals of electromagnetic emission.Based on the impulse generator of inertia energy storage, be a kind of special synchronous generator, utilize compensation principle and compressed magnetic flux principle, significantly reduce the internal inductance of armature winding, thus obtain the high pulse current of amplitude, there is very strong application potential.
Impulse generator excitation mode mainly contains two kinds: electric excitation and permanent magnet excitation.Because electric excitation needs brush, electric machine structure is complicated, and the wearing and tearing of brush and ablation also can reduce the reliability of motor, and increase its maintenance cost, and therefore the research of permanent magnet excitation impulse generator increases gradually in recent years.
Impulse generator interdischarge interval, rotating speed declines very fast, and can produce high electromagnetic torque and impact, magnitude reaches MNm, and this can produce extreme shock to optimal in structure.General employing two motors are parallel now places, and synchronous backward rotates, and offsets discharge impact torque.But two motors increase system bulk, and two current output terminal mouths, cause switch control device also can double, also can bring the problem that current parallel is synchronous simultaneously.
Summary of the invention
The present invention seeks to adopt the parallel placement of two motors at present to solve, the electromagnetic torque produced during making its synchronous backward rotate cancellation pulses generator discharge impacts, causing the problem that motor volume increases, providing a kind of axial magnetic field permanent magnet to turning birotor compensating pulse electric generator.
Axial magnetic field permanent magnet of the present invention is to turning birotor compensating pulse electric generator, and it comprises left rotor, stator disc, right-hand rotation, two end caps and casing,
Left rotor, stator disc and right-hand rotation are successively set in time cylindrical space of two end caps and casing formation vertically, and left rotor and an end cap and son of turning right are that specular distributes in the both sides of stator disc with another end cap; Form air gap between left rotor and stator disc, between stator disc and right-hand rotation, form air gap;
Left rotor comprises left rotor disk yoke, left rotor permanent magnet, left rotor compensating disc, left rotor bandage, left rotor axle and left rotor support;
Stator disc comprises stator support and stator disc yoke;
Left rotor disk yoke is circular disk, left rotor disk yoke is fixed on the external annular surface of left rotor axle by left rotor support, left rotor axle is connected with corresponding end cap by bearing, the air gap side surface of left rotor disk yoke sets gradually left rotor permanent magnet and left rotor compensating disc, the external peripheral surface of left rotor disk yoke, left rotor permanent magnet and left rotor compensating disc wraps up left rotor bandage;
Stator disc yoke is annular core, the external peripheral surface of stator disc yoke is fixed on the inner surface in casing stage casing, the inner circumferential surface of stator disc yoke is fixedly connected with the external peripheral surface of stator support, and the inner circumferential surface of stator support is connected by the right armature spindle of bearing with left rotor axle and son of turning right;
Two air gap side surfaces of stator disc yoke along the circumferential direction evenly have radial slot, in radial slot, embeds stator armature winding.
Described stator armature winding is Circular Winding structure, totally two phase windings, and each phase winding comprises four coils.
Two phase windings of stator armature winding are A phase winding and B phase winding, A phase winding is made up of A1, A2, A3 and A4 tetra-pitch of the laps, B phase winding is made up of B1, B2, B3 and B4 tetra-pitch of the laps, A1 and B1 pitch of the laps, A2 and B2 pitch of the laps, A3 and B3 pitch of the laps, A4 and B4 pitch of the laps one_to_one corresponding form four coil groups, four coil groups are evenly distributed on the outboard sidewalls of stator disc yoke on the surface along the circumferencial direction of stator disc yoke, and four coil groups canoe vertically on the sidewall of stator disc yoke is consistent;
For A1 and B1 pitch of the laps, A1 and B1 pitch of the laps lays respectively in the coil side on stator disc yoke outboard sidewalls, the coil side of B1 pitch of the laps is placed in the middle, the coil side apportion both sides of A1 pitch of the laps, the coil side of B1 pitch of the laps head and the tail connect by port segmentation that B1 pitch of the laps is positioned at stator disc yoke port side in turn, and A1 pitch of the laps is positioned at the coil side interconnection of port segmentation by A1 pitch of the laps of stator disc yoke port side.
Left rotor permanent magnet is Halbach array structure on left rotor disk yoke, and produces axial magnetic field.
Left rotor compensating disc is aluminum annular-shaped dish.
Left rotor bandage is entwined by carbon fiber epoxy.
Advantage of the present invention: motor of the present invention is birotor internal stator tray type structure, concentric but disalignment are arranged successively from left to right for left rotor disk, stator disc and right-hand rotation sub-disk, left rotor disk is identical with right-hand rotation sub-disk symmetrical configuration centered by stator disc, in running, by controlling to make two rotor direction of rotation contrary.Rotor compensates and folds discharging compensation effect.
Make birotor to turning, when discharging, electromagnetic torque cancels each other, and can reduce the torque shock ends to optimal in structure; Birotor adopts permanent magnet excitation not establish brush, can reduction system volume, improve operational reliability, place with existing two motors are parallel, synchronous backward rotates, the mode offsetting discharge impact torque is contrary, have two current output terminal mouths in existing mode, the present invention is single current output terminal mouth, and foreign current controls only to need a set of control device, need not consider the problem of electric current circulation, electric machine control system is simpler.
Two cover electric machine structures are combined as one to turning Double-rotor disc motor by the present invention, share a set of armature winding, by arranging respectively motor is two-spool, achieve the independent of turning of left and right rotor, and the electromagnetic torque of rotor cancels each other about when motor discharges, reduce the torque shock ends to optimal in structure.The dimension and weight of motor also reduces greatly simultaneously.
Accompanying drawing explanation
Fig. 1 is that axial magnetic field permanent magnet of the present invention is to the structural representation turning birotor compensating pulse electric generator;
Fig. 2 is that the circumferencial direction of stator armature winding distribution on stator disc yoke launches schematic diagram.
Embodiment
Embodiment one: present embodiment is described below in conjunction with Fig. 1, axial magnetic field permanent magnet described in present embodiment is to turning birotor compensating pulse electric generator, and it comprises left rotor, stator disc, right-hand rotation, two end caps 7 and casing 10,
What left rotor, stator disc and right-hand rotation were successively set on that two end caps 7 and casing 10 formed vertically returns in cylindrical space, and left rotor and end cap 7 are that specular distributes in the both sides of stator disc with turn right son and another end cap 7; Form air gap between left rotor and stator disc, between stator disc and right-hand rotation, form air gap;
Left rotor comprises left rotor disk yoke 1, left rotor permanent magnet 2, left rotor compensating disc 3, left rotor bandage 4, left rotor axle 5 and left rotor support 6;
Stator disc comprises stator support 8 and stator disc yoke 9;
Left rotor disk yoke 1 is circular disk, left rotor disk yoke 1 is fixed on the external annular surface of left rotor axle 5 by left rotor support 6, left rotor axle 5 is connected with corresponding end cap 7 by bearing, the air gap side surface of left rotor disk yoke 1 sets gradually left rotor permanent magnet 2 and left rotor compensating disc 3, the external peripheral surface of left rotor disk yoke 1, left rotor permanent magnet 2 and left rotor compensating disc 3 wraps up left rotor bandage 4;
Stator disc yoke 9 is annular core, the external peripheral surface of stator disc yoke 9 is fixed on the inner surface in casing 10 stage casing, the inner circumferential surface of stator disc yoke 9 is fixedly connected with the external peripheral surface of stator support 8, and the inner circumferential surface of stator support 8 is connected by the right armature spindle of bearing with left rotor axle 5 and son of turning right;
Two air gap side surfaces of stator disc yoke 9 along the circumferential direction evenly have radial slot, in radial slot, embeds stator armature winding.
Motor in present embodiment is birotor internal stator tray type structure, and concentric but disalignment are arranged successively from left to right for left rotor, stator disc and right-hand rotation; Stator disc yoke 9 and casing 10 are fixed by screw, and stator support is used for fixing two groups of bearings, support left and right armature spindle respectively.Left rotor axle is fixed by the bearing of left end cap and stator disc side.This motor, in running, makes the direction of rotation of left rotor and each rotor contrary by control.
The course of work:
Step one: adopt prime mover to drag birotor and rotate, after rotor reaches rated speed, prime mover and rotor main shaft are thrown off by solenoidoperated cluthes, described rotor continues to rotate by inertia;
Step 2: armature winding is discharged to low-impedance load by rectifier bridge, pulse current reaches kA level, and within the millisecond time, motor speed declines fast, discharges large energy, and electromagnetic impact torque is very large, and birotor then can offset impact torque to turning.
Operation principle:
In order to produce the current impulse of amplitude as far as possible when discharging, armature winding internal impedance should be little as far as possible.Therefore during design of electrical motor, the armature winding number of turn is little, chooses the wire that sectional area is large.Simultaneously compared to conventional motors, the compensating unit of high conductivity is placed between permanent magnet and armature winding---compensating disc, during electric discharge, by the compensation of eddy currents compression armature reaction magnetic flux produced in compensating unit, further reduction armature winding transient impedance, thus obtain the high current impulse of peak value.
Embodiment two: present embodiment is described further execution mode one, described stator armature winding is Circular Winding structure, totally two phase windings, and each phase winding comprises four coils.
Embodiment three: present embodiment is described below in conjunction with Fig. 2, present embodiment is described further execution mode two, two phase windings of stator armature winding are A phase winding and B phase winding, A phase winding is by A1, A2, A3 and A4 tetra-pitch of the laps compositions, B phase winding is by B1, B2, B3 and B4 tetra-pitch of the laps compositions, A1 and B1 pitch of the laps, A2 and B2 pitch of the laps, A3 and B3 pitch of the laps, A4 and B4 pitch of the laps one_to_one corresponding forms four coil groups, four coil groups are evenly distributed on the outboard sidewalls of stator disc yoke 9 on the surface along the circumferencial direction of stator disc yoke 9, four coil groups canoe vertically on the sidewall of stator disc yoke 9 is consistent,
For A1 and B1 pitch of the laps, A1 and B1 pitch of the laps lays respectively in the coil side on stator disc yoke 9 outboard sidewalls, the coil side of B1 pitch of the laps is placed in the middle, the coil side apportion both sides of A1 pitch of the laps, the coil side of B1 pitch of the laps head and the tail connect by port segmentation that B1 pitch of the laps is positioned at stator disc yoke 9 port side in turn, and A1 pitch of the laps is positioned at the coil side interconnection of port segmentation by A1 pitch of the laps of stator disc yoke 9 port side.
In present embodiment, four coils of each phase winding can different connection in series-parallel form combination.It is two-layer that four coil groups have left and right, at two air gap side surfaces of stator disc, stator armature winding overhang connects for annular connects, and B phase winding left and right coil side connects successively, the coil side interconnection of A phase winding left and right, can avoid winding electromotive force to cancel each other on the contrary mutually due to phase place like this.After end has connected, every phase winding has four coils respectively, with different connection in series-parallel form combination, can mate dissimilar load.
Embodiment four: present embodiment is described further execution mode one, two or three, left rotor permanent magnet 2 is Halbach array structure on left rotor disk yoke 1, and produces axial magnetic field.
Left rotor permanent magnet 2 Surface Mount is on left rotor disk yoke 1.
Embodiment five: present embodiment is described further execution mode one, two, three or four, left rotor compensating disc 3 is aluminum annular-shaped dish.
Left rotor compensating disc 3 Surface Mount, on left rotor permanent magnet 2, plays discharging compensation.
Embodiment six: present embodiment is described further execution mode one, two, three, four or five, and left rotor bandage 4 is entwined by carbon fiber epoxy.
Left rotor bandage 4 can not come off under the circumference of the high-speed rotation for left rotor.
Claims (6)
1. axial magnetic field permanent magnet is to turning a birotor compensating pulse electric generator, it is characterized in that, it comprises left rotor, stator disc, right-hand rotation, two end caps (7) and casing (10),
What left rotor, stator disc and right-hand rotation were successively set on that two end caps (7) and casing (10) formed vertically returns in cylindrical space, and left rotor and end cap (7) are that specular distributes in the both sides of stator disc with turn right son and another end cap (7); Form air gap between left rotor and stator disc, between stator disc and right-hand rotation, form air gap;
Left rotor comprises left rotor disk yoke (1), left rotor permanent magnet (2), left rotor compensating disc (3), left rotor bandage (4), left rotor axle (5) and left rotor support (6);
Stator disc comprises stator support (8) and stator disc yoke (9);
Left rotor disk yoke (1) is circular disk, left rotor disk yoke (1) is fixed on the external annular surface of left rotor axle (5) by left rotor support (6), left rotor axle (5) is connected with corresponding end cap (7) by bearing, the air gap side surface of left rotor disk yoke (1) sets gradually left rotor permanent magnet (2) and left rotor compensating disc (3), the external peripheral surface of left rotor disk yoke (1), left rotor permanent magnet (2) and left rotor compensating disc (3) wraps up left rotor bandage (4);
Stator disc yoke (9) is annular core, the external peripheral surface of stator disc yoke (9) is fixed on the inner surface in casing (10) stage casing, the inner circumferential surface of stator disc yoke (9) is fixedly connected with the external peripheral surface of stator support (8), and the inner circumferential surface of stator support (8) is connected by the right armature spindle of bearing with left rotor axle (5) and son of turning right;
Two air gap side surfaces of stator disc yoke (9) along the circumferential direction evenly have radial slot, in radial slot, embeds stator armature winding.
2. axial magnetic field permanent magnet according to claim 1 is to turning birotor compensating pulse electric generator, it is characterized in that, described stator armature winding is Circular Winding structure, totally two phase windings, and each phase winding comprises four coils.
3. axial magnetic field permanent magnet according to claim 2 is to turning birotor compensating pulse electric generator, it is characterized in that,
Two phase windings of stator armature winding are A phase winding and B phase winding, A phase winding is made up of A1, A2, A3 and A4 tetra-pitch of the laps, B phase winding is made up of B1, B2, B3 and B4 tetra-pitch of the laps, A1 and B1 pitch of the laps, A2 and B2 pitch of the laps, A3 and B3 pitch of the laps, A4 and B4 pitch of the laps one_to_one corresponding form four coil groups, four coil groups are evenly distributed on the outboard sidewalls of stator disc yoke (9) on the surface along the circumferencial direction of stator disc yoke (9), and four coil groups canoe vertically on the sidewall of stator disc yoke (9) is consistent;
For A1 and B1 pitch of the laps, A1 and B1 pitch of the laps lays respectively in the coil side on stator disc yoke (9) outboard sidewalls, the coil side of B1 pitch of the laps is placed in the middle, the coil side apportion both sides of A1 pitch of the laps, the coil side of B1 pitch of the laps head and the tail connect by port segmentation that B1 pitch of the laps is positioned at stator disc yoke (9) port side in turn, and A1 pitch of the laps is positioned at the coil side interconnection of port segmentation by A1 pitch of the laps of stator disc yoke (9) port side.
4. the axial magnetic field permanent magnet according to claim 1,2 or 3, to turning birotor compensating pulse electric generator, is characterized in that, left rotor permanent magnet (2) is upper in Halbach array structure at left rotor disk yoke (1), and produces axial magnetic field.
5. the axial magnetic field permanent magnet according to claim 1,2 or 3, to turning birotor compensating pulse electric generator, is characterized in that, left rotor compensating disc (3) is aluminum annular-shaped dish.
6. the axial magnetic field permanent magnet according to claim 1,2 or 3, to turning birotor compensating pulse electric generator, is characterized in that,
Left rotor bandage (4) is entwined by carbon fiber epoxy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510190785.8A CN104734438B (en) | 2015-04-20 | 2015-04-20 | Axial-field permanent magnet compensated impulse generator with double contra-rotating rotors |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510190785.8A CN104734438B (en) | 2015-04-20 | 2015-04-20 | Axial-field permanent magnet compensated impulse generator with double contra-rotating rotors |
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| CN104734438A true CN104734438A (en) | 2015-06-24 |
| CN104734438B CN104734438B (en) | 2017-04-12 |
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Cited By (6)
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| CN107681854A (en) * | 2017-11-02 | 2018-02-09 | 合肥工业大学 | A kind of axial permanent magnetic motor |
| CN109245469A (en) * | 2018-11-15 | 2019-01-18 | 徐晓东 | A kind of high efficiency motor and its mold and assemble method |
| CN109245401A (en) * | 2018-10-19 | 2019-01-18 | 核心驱动科技（金华）有限公司 | Disc type electric machine |
| CN110504789A (en) * | 2019-09-20 | 2019-11-26 | 哈尔滨工业大学 | Modularization Flywheel motor-generator system |
| EP3512082A4 (en) * | 2016-06-23 | 2020-05-27 | Trofymchuk, Oleksiy | Magnetic device suitable for use as a power generator or drive motor |
| CN116317421A (en) * | 2023-05-15 | 2023-06-23 | 湖南大学 | Single-stator double-rotor axial magnetic flux hybrid excitation counter-rotating motor |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| EP3512082A4 (en) * | 2016-06-23 | 2020-05-27 | Trofymchuk, Oleksiy | Magnetic device suitable for use as a power generator or drive motor |
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| CN116317421A (en) * | 2023-05-15 | 2023-06-23 | 湖南大学 | Single-stator double-rotor axial magnetic flux hybrid excitation counter-rotating motor |
| CN116317421B (en) * | 2023-05-15 | 2023-08-29 | 湖南大学 | Single-stator double-rotor axial magnetic flux hybrid excitation counter-rotating motor |
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