CN204442038U - A kind of hybrid excitation generator - Google Patents
A kind of hybrid excitation generator Download PDFInfo
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- CN204442038U CN204442038U CN201420755928.6U CN201420755928U CN204442038U CN 204442038 U CN204442038 U CN 204442038U CN 201420755928 U CN201420755928 U CN 201420755928U CN 204442038 U CN204442038 U CN 204442038U
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- magnetic pole
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- pole
- conductive axis
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Abstract
A kind of hybrid excitation generator, comprise casing, described casing internal fixtion is provided with stator, and described stator axle center place is provided with rotor, and described casing is also provided with control circuit; Described stator comprises armature core and is placed on the armature winding on described armature core, described rotor comprises the magnetic conductive axis being positioned at axle center and the excitation winding be placed on magnetic conductive axis, described magnetic conductive axis is fixedly connected with magnetic pole, described magnetic pole comprises the first magnetic pole and tail magnetic pole that are divided into the forward and backward two ends of described magnetic conductive axis, maintains shaft clearance between the magnetic pole of the circumference outer ring of described first magnetic pole and described tail magnetic pole; Described magnetic pole be circumferentially evenly installed with some magnet steel, the outer surface of described magnet steel and the outer peripheral surface of described magnetic pole maintain gap, footpath, and the outer surface of described magnet steel compared to the outer peripheral surface of described magnetic pole closer to described magnetic conductive axis.The utility model solves prior art problem, provides the generator that a kind of volume is little, efficiency is high.
Description
Technical field
The present invention relates to a kind of generator, particularly relate to a kind of hybrid excitation generator, belong to field of motor manufacturing.
Background technology
After vehicle drive power coupling distance increasing unit, the function of electric automobile emergent charging or the driving of realization series connection plug-in hybrid can be solved.But electric vehicle structure is compact, require harsh to the axial dimension of generator; Automobile product is strict to accessory cost control simultaneously.
The supporting generator of vehicle-mounted distance increasing unit in the market mainly have employed two schemes, and mostly have employed permanent magnet rotor scheme, and small part have employed claw-pole type generator scheme.Permanent magnet rotor generator can be designed to flat structure, facilitate installation and the size Control of range extender system, but the output generator current of this structure or voltage control need to adopt special secondary power supply, and the BUCK voltage stabilizing circuit of relatively high power need adopt expensive device for power switching and high-power filter inductance.So, when the power of distance increasing unit is larger, adopt the supporting controller of the generator of permanent magnet excitation rotor not only cost be difficult to meet instructions for use.Adopt claw-pole type generator and cost lower, but its power density is low, overall dimension is comparatively large, cannot meet the requirement of automobile-used distance increasing unit.
Summary of the invention
The present invention, for solving prior art problem, provides the generator that a kind of volume is little, efficiency is high.
Technical scheme of the present invention is: a kind of hybrid excitation generator, comprises casing, and described casing internal fixtion is provided with stator, and described stator axle center place is provided with rotor, and described casing is also provided with control circuit; Described stator comprises armature core and is placed on the armature winding on described armature core, described rotor comprises the magnetic conductive axis being positioned at axle center and the excitation winding be placed on magnetic conductive axis, described magnetic conductive axis is fixedly connected with magnetic pole, described magnetic pole comprises the first magnetic pole and tail magnetic pole that are divided into the forward and backward two ends of described magnetic conductive axis, maintains shaft clearance between the magnetic pole of the circumference outer ring of described first magnetic pole and described tail magnetic pole; Described magnetic pole be circumferentially evenly installed with some magnet steel, the outer surface of described magnet steel and the outer peripheral surface of described magnetic pole maintain gap, footpath, and the outer surface of described magnet steel compared to the outer peripheral surface of described magnetic pole closer to described magnetic conductive axis.
As preferably, described magnetic pole comprises the magnetic conduction yoke be fixedly connected with described magnetic conductive axis, and described magnetic conduction magnetic yoke circumferential outer surface has the storage tank that some cross sections are swallow-tail form; Described magnet steel cross section is roughly can match with described storage tank trapezoidal, and described trapezoidal upper minor face and lower minor face are arc, and described magnet steel inserts in described storage tank.
As preferably, the pole orientation being positioned at all described magnet steel on described first magnetic pole or described tail magnetic pole is identical, is positioned at the described magnet steel on described first magnetic pole and is positioned at the pole orientation of the described magnet steel on described tail magnetic pole contrary.
As preferably, described shaft clearance is 6 ~ 10 times of motor minimal air gap.The minimum value of air gap between the stators and rotators that the minimal air gap of motor is motor.
As preferably, gap, described footpath is 0.5 ~ 2 times of motor minimal air gap.
As preferably, described armature winding is concentratred winding; Described armature core comprises stretching out in magnetic conduction district outside described armature winding and being inserted into and draws magnetic region within described armature winding, described in draw the two side of magnetic region along pointing to successively close away from the direction in described magnetic conduction district near described magnetic conduction district.
As preferably, described in draw magnetic region two side between angle be 1 ~ 3 degree.
As preferably, described in draw magnetic region and have wire lead slot away from the one end in described magnetic conduction district.
As preferably, described excitation winding is arranged between described first magnetic pole and described tail magnetic pole; The projection of described armature core on described magnetic conductive axis is between described first magnetic pole and described tail magnetic pole.
When the present invention works, excitation winding passes through small area analysis, by magnetic conduction yoke, produce excitation field, with the magnetic field of the magnet steel in magnetic conduction yoke produce superpose after load on armature, rotor high-speed rotates, and make the excitation field loading on armature produce alternation, armature winding converts this alternating magnetic field to electric current.
The course of work of the present invention is:
When excitation winding no power, the magnetic potential that excitation winding produces is 0, and equivalent magnetic resistance is about 0, and magnet steel is excitatory to motor separately.Due to the magnet steel direct effect at initial and end two ends, now the magnetic line of force is mainly: the magnet steel-> axle of the first magnetic pole of magnet steel-> motor gas-gap-> armature core-> casing-> armature core-> motor gas-gap-> of tail magnetic pole, forms closed flux path.When rotor rotates, armature only induces the excitatory back-emf power generation operation of magnet steel.
When excitation winding forward is energized, the magnetic potential that excitation winding produces is If*n(If is exciting current, n is the excitation winding number of turn), equivalent magnetic resistance is about 0, because the magnetic resistance of magnet steel is very large, excitation winding magnetizing flux cannot pass through magnet steel, but directly can form magnetic loop by the salient pole of left and right magnetic pole, and now excitation winding and magnet steel are jointly excitatory to armature.The magnet steel of initial and end two magnetic poles, due to its constant-current source characteristic, keeps the flux circuit identical with during excitation winding no power.If now remember, air gap useful flux is Φ, so has: Φ=Φ S1+ Φ N1+ Φ S2+ Φ N2.Φ S1 be excitation winding at the magnetizing flux of left salient pole to air gap, Φ N1 is the magnetizing flux of left magnet steel in air gap, and Φ S2 is right magnet steel magnetizing flux in air gap, and Φ N2 is the magnetizing flux of right salient pole in air gap.What now magnet steel and excitation winding produced is excitatory simultaneously through motor shaft and casing, and direction is contrary, there is the effect of the supersaturation avoiding magnetic conductive axis and casing magnetic circuit, further increase magnet steel to the excitatory ability of air gap, therefore this magnetic structure has the function increasing magnetic in parallel, and excitation winding increases magnetic effect directly, obviously.
When magnet exciting coil is oppositely energized, the pole orientation of the excitatory and magnet steel that excitation winding produces in whole motor is identical, but equally because the magnetic resistance of magnet steel is larger, the axle air gap that the magnetic circuit that excitation winding produces is answered by means of only pole pair produces magnetic flux, but flow direction is contrary with exciting current direction, so now air gap useful flux is Φ=Φ N1-Φ S1+ Φ S2-Φ N2, meanwhile two kinds of magnetic fluxes are equidirectional enters axle and casing, make axle and casing more saturated, cause the close reduction of the magnetic of magnet steel body to air gap.Visible when excitation winding is with reverse current, the weak magnetic successful of motor.
The present invention adopts initial and end two magnetic poles, and each magnetic pole is made up of magnetic conduction yoke and magnet steel.Magnetic conduction yoke cylindrical is designed with some double wedges and dovetail groove, dovetail groove is embedded with " inverted trapezoidal " circular arc magnet steel, and rotor can be prevented when High Rotation Speed, and magnet steel and yoke depart from.
There is an air gap difference in magnetic pole cylindrical and magnet steel outer surface, because motor gas-gap size is less, and under current technique, tolerance clearance between the magnet steel of motor and stator is difficult to control, and cannot Precision Machining, but magnetic pole cylindrical can fine finishining, the present invention adopts gap structure to effectively reduce gap between magnetic pole and stator, to reduce electric excitation magnetic resistance, improve the control effects of electric excitation to air-gap flux, simultaneously because magnet steel affects less by size of gaps on stator excitatory, processing technology and the control of motor performance consistency are taken into account.
Initial and end magnetic pole, axially arranging shaft clearance, prevents the magnetic circuit direct short-circuit of magnet exciting coil, and the shaft clearance of 6 to 10 times of motor minimal air gap ensure that and the effective basis of shaft clearance avoids oversize and affect the axial length effective rate of utilization of motor.
Armature winding of the present invention adopts concentratred winding, and object is the end size in order to reduce winding.But for the motor of relatively high power, the inserting-coil process of concentratred winding all ten difficult problems all the time, present invention improves over core structure, adopt tilt as the stator tooth drawing magnetic region, armature winding can directly overlap on the stator tooth of stator, the stator tooth of this structure has guide effect to lower line process simultaneously, improves the efficiency that rolls off the production line further.
Accompanying drawing explanation
Fig. 1 is anatomical structure schematic diagram of the present invention;
Fig. 2 is A-A anatomical structure schematic diagram in Fig. 1;
Fig. 3 is B-B anatomical structure schematic diagram in Fig. 1;
Fig. 4 is field structure schematic diagram of the present invention;
Fig. 5 is C place partial enlarged drawing in Fig. 4;
Fig. 6 is D place partial enlarged drawing in Fig. 2;
Fig. 7 is fundamental diagram of the present invention.
In figure, 1, casing, 2, armature core, 21, magnetic conduction district, 22, draw magnetic region, 3, armature winding, 4, magnetic conductive axis, 5, tail magnetic pole, 6, first magnetic pole, 7, magnet steel.
Embodiment
With embodiment, the invention will be further described below.
Embodiment one:
A kind of hybrid excitation generator, comprise casing 1, casing 1 internal fixtion is provided with stator, and stator axle center place is provided with rotor, and casing 1 is also provided with control circuit; The armature winding 3 that stator comprises armature core 2 and is placed on armature core 2, rotor comprises the magnetic conductive axis 4 being positioned at axle center and the excitation winding be placed on magnetic conductive axis 4, and excitation winding is arranged between first magnetic pole 6 and tail magnetic pole 5; The projection of armature core 2 on magnetic conductive axis 4 is between first magnetic pole 6 and tail magnetic pole 5.Magnetic conductive axis 4 is fixedly connected with magnetic pole, and magnetic pole comprises the first magnetic pole 6 and tail magnetic pole 5 that are divided into the forward and backward two ends of magnetic conductive axis 4, maintains shaft clearance between the magnetic pole of the circumference outer ring of first magnetic pole 6 and tail magnetic pole 5; Shaft clearance is 6 ~ 10 times of motor minimal air gap.Magnetic pole be circumferentially evenly installed with some magnet steel 7, the outer surface of magnet steel 7 and the outer peripheral surface of magnetic pole maintain gap, footpath, and the outer surface of magnet steel 7 is compared to the outer peripheral surface of magnetic pole closer to magnetic conductive axis 4, and gap, footpath is 0.5 ~ 2 times of motor minimal air gap.Magnetic pole comprises the magnetic conduction yoke be fixedly connected with magnetic conductive axis 4, and magnetic conduction magnetic yoke circumferential outer surface has the storage tank that some cross sections are swallow-tail form; Magnet steel 7 cross section is roughly can match with storage tank trapezoidal, and trapezoidal upper minor face and lower minor face are arc, and magnet steel 7 inserts in storage tank.The pole orientation being positioned at all magnet steel 7 on first magnetic pole 6 or tail magnetic pole 5 is identical, and the magnet steel 7 be positioned on first magnetic pole 6 is contrary with the pole orientation being positioned at the magnet steel 7 on tail magnetic pole 5.
Armature winding 3 is concentratred winding; Armature core 2 comprises stretching out in magnetic conduction district outside armature winding 3 21 and being inserted into and draws magnetic region 22 within armature winding 3, and the two side of drawing magnetic region 22 is successively close along the direction pointed to away from magnetic conduction district 21 near magnetic conduction district 21.Angle between the two side of drawing magnetic region 22 is 1 ~ 3 degree, draws magnetic region 22 and has wire lead slot away from the one end in magnetic conduction district 21.
Operationally, the excitation winding of energising can be equivalent to voltage source in the present invention; Because the magnetic resistance of magnet steel 7 is comparatively large, and remanent magnetism is higher, equivalence can become current source.Then first magnetic pole 6 and tail magnetic pole 5 can equivalence carry out excitatory to armature.When excitation winding no power, form magnetic circuit as shown in inner ring dotted line in Fig. 7; When excitation winding forward is energized, form magnetic circuit as shown in double dot dash line in Fig. 7.
Claims (9)
1. a hybrid excitation generator, comprises casing (1), and described casing (1) internal fixtion is provided with stator, and described stator axle center place is provided with rotor, and described casing (1) is also provided with control circuit; Described stator comprises armature core (2) and is placed on the armature winding (3) on described armature core (2), described rotor comprises the magnetic conductive axis (4) being positioned at axle center and the excitation winding be placed on magnetic conductive axis (4), (4) are fixedly connected with magnetic pole to described magnetic conductive axis, it is characterized in that: described magnetic pole comprises the first magnetic pole (6) and tail magnetic pole (5) that are divided into described magnetic conductive axis (4) forward and backward two ends, maintains shaft clearance between the magnetic pole of the circumference outer ring of described first magnetic pole (6) and described tail magnetic pole (5); Described magnetic pole be circumferentially evenly installed with some magnet steel (7), the outer surface of described magnet steel (7) and the outer peripheral surface of described magnetic pole maintain gap, footpath, and the outer surface of described magnet steel (7) compared to the outer peripheral surface of described magnetic pole closer to described magnetic conductive axis (4).
2. hybrid excitation generator according to claim 1, it is characterized in that: described magnetic pole comprises the magnetic conduction yoke be fixedly connected with described magnetic conductive axis (4), described magnetic conduction magnetic yoke circumferential outer surface has the storage tank that some cross sections are swallow-tail form; Described magnet steel (7) cross section is roughly can match with described storage tank trapezoidal, and described trapezoidal upper minor face and lower minor face are arc, and described magnet steel (7) inserts in described storage tank.
3. hybrid excitation generator according to claim 1 or 2, it is characterized in that: the pole orientation being positioned at all described magnet steel (7) on described first magnetic pole (6) or described tail magnetic pole (5) is identical, be positioned at the described magnet steel (7) on described first magnetic pole (6) and be positioned at the pole orientation of the described magnet steel (7) on described tail magnetic pole (5) contrary.
4. hybrid excitation generator according to claim 1, is characterized in that: described shaft clearance is 6 ~ 10 times of motor minimal air gap.
5. hybrid excitation generator according to claim 1, is characterized in that: gap, described footpath is 0.5 ~ 2 times of motor minimal air gap.
6. hybrid excitation generator according to claim 1, is characterized in that: described armature winding (3) is concentratred winding; Described armature core (2) comprise the magnetic conduction district (21) that stretches out in outside described armature winding (3) and be inserted within described armature winding (3) draw magnetic region (22), described in draw the two side of magnetic region (22) along pointing to successively close away from the direction of described magnetic conduction district (21) near described magnetic conduction district (21).
7. hybrid excitation generator according to claim 6, is characterized in that: described in draw magnetic region (22) two side between angle be 1 ~ 3 degree.
8. hybrid excitation generator according to claim 5 or 6, is characterized in that: described in draw magnetic region (22) and have wire lead slot away from one end of described magnetic conduction district (21).
9. hybrid excitation generator according to claim 1, is characterized in that: described excitation winding is arranged between described first magnetic pole (6) and described tail magnetic pole (5); The projection of described armature core (2) on described magnetic conductive axis (4) is positioned between described first magnetic pole (6) and described tail magnetic pole (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420755928.6U CN204442038U (en) | 2014-12-05 | 2014-12-05 | A kind of hybrid excitation generator |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420755928.6U CN204442038U (en) | 2014-12-05 | 2014-12-05 | A kind of hybrid excitation generator |
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| Publication Number | Publication Date |
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| CN204442038U true CN204442038U (en) | 2015-07-01 |
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| CN201420755928.6U Withdrawn - After Issue CN204442038U (en) | 2014-12-05 | 2014-12-05 | A kind of hybrid excitation generator |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104467216A (en) * | 2014-12-05 | 2015-03-25 | 浙江迈雷科技有限公司 | Hybrid excitation generator |
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2014
- 2014-12-05 CN CN201420755928.6U patent/CN204442038U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104467216A (en) * | 2014-12-05 | 2015-03-25 | 浙江迈雷科技有限公司 | Hybrid excitation generator |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20150701 Effective date of abandoning: 20171124 |