CN105226906A - A kind of pole core rotor improving magneto starting performance - Google Patents
A kind of pole core rotor improving magneto starting performance Download PDFInfo
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- CN105226906A CN105226906A CN201510611137.5A CN201510611137A CN105226906A CN 105226906 A CN105226906 A CN 105226906A CN 201510611137 A CN201510611137 A CN 201510611137A CN 105226906 A CN105226906 A CN 105226906A
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Abstract
The present invention relates to a kind of pole core rotor improving magneto starting performance, belong to permanent magnet synchronous motor technical field; Comprise rotating shaft, monolateral trapezoidal permanent magnet, rectangular permanent magnet, sulculus copper sheet, end ring, the collar, screw, baffle plate, butterfly spring, pole core and key; Rotating shaft is connected by key with pole core, monolateral trapezoidal permanent magnet is placed in the both sides groove of the interrupted U-lag of pole core, rectangular permanent magnet and butterfly spring adopt adhesive to be fixed as one to be placed in its base channel, the one-way shaft of pole core is realized to maintenance by the collar, at pole core two ends, baffle plate is installed, sulculus copper sheet is assigned in the rectangle sulculus pole core and baffle plate cylindrical place offered, utilize at sulculus copper sheet two ends screw end ring to be fitted in sulculus copper sheet two ends and sulculus copper sheet, end ring are connected with baffle plate.Contrast prior art, the present invention have ensure processability, cost, overall dimensions and meet electromagnetic performance basis on reduce the effect of starting current, moment of torsion.
Description
Art
The present invention relates to a kind of pole core rotor improving magneto starting performance, belong to permanent magnet synchronous motor technical field.
Background technology
Magneto conventional at present, the instantaneous of its starting compares the brake torque and pulse torque that all need very large current excitation to overcome to be caused by permanent magnet compared with asynchronous machine, the corresponding transformer also needing configuration relatively high power, the cost of client is exponentially increased, brings problem to the popularization of magneto.For the problems referred to above, if adopt less current excitation to get final product starting and permanent magnet motor, so will greatly reduce the cost of client, bring very wide prospect to the promotion and application of magneto.
The stator current of magneto in starting process mainly contains two parts and forms, one be due to applied voltage produce the stator current of cage induction motor effect; Two be magnetic field of permanent magnet act on stator winding and stator winding by the frequency conversion permanent magnet generator short circuit current that produces of electrical network equivalence short circuit.The factor of these two aspects makes much larger than common asynchronous moter of the starting current of Self-starting permanent magnet motor.
Application Number (patent): 200820135715.8, a kind of dual rotor permanent magnetic motor.What this patent described is a kind of synchronous magnetoelectric machine with multiple rotor, it is provided with p-m rotor in rotating shaft, corresponding p-m rotor is provided with permanent-magnet stator at casing internal, in rotating shaft, p-m rotor outside is also provided with starting excitation rotor, the corresponding excitation rotor that starts is provided with starting energized stator, energized stator is started while starting and permanent magnet stator, be equivalent to bimorph transducer start, although the program effectively reduces starting current, but add motor internal mechanism, motor cost and overall dimensions are increased, installation dimension comparatively GB recommendation increases, cannot effectively meet customer need.
Application Number (patent): 200810167792.6, a kind of synchronous magnetoelectric machine and starting thereof, operation method.This patent and Application Number (patent): 200820135715.8 structural similarities, just change starting excitation rotor and starting energized stator into asynchronous machine, during starting, asynchronous machine and magneto start simultaneously, although the program effectively reduces starting current, and realize Generation of induction motor, but add motor internal mechanism equally, motor cost and overall dimensions are increased, cannot effectively meet customer need, and Generation of induction motor directly cannot drop into electrical network, be equivalent to asynchronous machine just use as starting and permanent magnet motor, cause equipment to waste.
Application Number (patent): 201110046135.8, a kind of have the Self-starting permanent magnet motor that composite material starts sliver.This patent adopts the mouse cage starting sliver being uniformly distributed and being made up of yellow copper and copper alloy bi-material at rotor surface, each composite material starts the two ends of sliver in the brass end ring short circuit of rotor core outward by welding.The program can reduce starting current to a certain extent, but also there is series of problems, is mainly reflected in: 1. the size of sliver own is less, forms according to different materials, in processing and manufacturing, there is larger problem; 2. bi-material resisitivity is less, and the contact resistance caused thus is less, and in reduction starting current, effect is little; 3. the program reduces torque of moving into while increase starting torque, have impact on the overall performance of motor.
The first two patent mainly increases starting torque by additional equipment, be equivalent to reduce applied voltage produce the stator current of cage induction motor effect, and then reduction starting current, but the principal contradiction brought is cost and overall dimensions to be increased, cannot effectively meet customer need, Application Number (patent): 201110046135.8 reduce starting current by changing sliver material, be equivalent to reduce applied voltage institute and produce the stator current of cage induction motor effect, but the principal contradiction brought is processed for being difficult to and reducing torque of moving into.If can effectively control magnetic field of permanent magnet act on stator winding and stator winding by the frequency conversion permanent magnet generator short circuit current that produces of electrical network equivalence short circuit, effectively can reduce pulse torque and brake torque that magneto produces due to the effect of permanent magnet in starting process, starting current and moment of torsion can be reduced on the basis ensureing processability, cost and overall dimensions, realize reducing magneto starting current and moment of torsion.
Summary of the invention
The object of the invention is the defect in order to overcome prior art, in order to solve the excessive problem of permagnetic synchronous motor starting current, proposing a kind of pole core rotor structure improving magneto starting performance.
The object of the invention is to be achieved through the following technical solutions:
Improve a pole core rotor for magneto starting performance, comprise rotating shaft, monolateral trapezoidal permanent magnet, rectangular permanent magnet, sulculus copper sheet, end ring, the collar, screw, baffle plate, butterfly spring, pole core and key, rotating shaft is the multidiameter without magnetic material, and in installation, place unshakable in one's determination offers keyway, pole core center is left and is installed the manhole locating same diameter unshakable in one's determination with rotating shaft, offer at center hole place, with rotating shaft, the keyway locating same size unshakable in one's determination is installed, the number interrupted U-lag equal with motor pole number is had according to motor pole number difference outside central circular through hole, but interrupted U-lag peak is lower than cylindrical unshakable in one's determination, wherein the both sides groove of interrupted U-lag offers into the monolateral dovetail groove identical with monolateral trapezoidal permanent magnet, the bottom edge slot of interrupted U-lag offers into the rectangular channel identical with rectangular permanent magnet, on cylindrical unshakable in one's determination, radially uniform rectangle sulculus of offering is for installing sulculus copper sheet, sulculus copper sheet is I-shape construction, and its two ends external part is processed with U-lag, the collar is cylindric, and wherein internal diameter is little compared with rotating shaft installation iron core place diameter, and external diameter is little compared with baffle plate internal diameter, baffle plate is identical with pole core diameter discoid, the center leaves installs the slightly large diameter manhole in place unshakable in one's determination compared with rotating shaft, on baffle plate cylindrical radially uniform offer sulculus copper sheet same position is installed with iron core rectangle sulculus for installing sulculus copper sheet, the sulculus size that this place's sulculus is offered compared with iron core place is larger, for placing the chamfering of sulculus copper sheet, offer screwed hole at the sulculus two ends offered for adopting screw to connect sulculus copper sheet, end ring is circular, circumferentially offers the screwed hole with baffle plate same position, formed objects,
Annexation
First in the keyway offered with pole core cooperation place key being installed on rotating shaft; Suitable sheet number is selected to realize being connected by key and rotating shaft with the keyway offered at center hole place by the manhole at pole core center according to Len req pole core, the circumference of the transmission and pole core that realize moment of torsion by key is fixed, realized the axial restraint of pole core by the interference fit of the collar and the positioning step of rotating shaft, ensure that phase countershaft unshakable in one's determination axial displacement does not occur; Monolateral trapezoidal permanent magnet is positioned in the groove of interrupted U-lag both sides, adhesive is adopted to be fixed as one rectangular permanent magnet and butterfly spring, then be installed in the base channel of interrupted U-lag, baffle plate is installed for preventing the axial displacement of rectangular permanent magnet and monolateral trapezoidal permanent magnet at pole core two ends, sulculus copper sheet is assigned in the rectangle sulculus pole core and baffle plate cylindrical place offered, utilize screw that end ring, baffle plate are press-fited connection at sulculus copper sheet two ends, thus sulculus copper sheet, end ring and baffle plate are joined together to form mouse cage starting structure.
As preferably, described pole core is discoid, and thickness, between 40mm-50mm, is made up of 10#, 15#, 20# mild steel or electrical pure iron.
As preferably, described sulculus copper sheet, baffle plate and end ring are made up of the metal material that electric conductivity is good.
As preferably, the described collar is made up of high-hardness.
Beneficial effect
Content of the present invention, contrast prior art, effectively can reduce pulse torque and brake torque that magneto produces due to the effect of permanent magnet in starting process, effective reduction motor starting currents and moment of torsion, have ensure processability, cost and overall dimensions and meet electromagnetic performance basis on reduce the effect of starting current, moment of torsion.
Accompanying drawing explanation
Fig. 1 is pivot structure schematic diagram.
Fig. 2 is pole core structural representation.
Fig. 3 is rectangular permanent magnet structural representation.
Fig. 4 is monolateral trapezoidal magnet structure schematic diagram.
Fig. 5 is I shape sulculus copper sheet structural representation.
Fig. 6 is end ring structure schematic diagram.
Fig. 7 is thimble structure schematic diagram.
Fig. 8 is baffle arrangement schematic diagram.
Fig. 9 is a kind of pole core rotor structure vertical section structure schematic diagram improving magneto starting performance of the embodiment of the present invention.
Rotor part right view when Figure 10 is embodiment of the present invention operation.
Rotor part right view when Figure 11 is embodiment of the present invention inoperative.
Reference numeral: 1-rotating shaft, the monolateral trapezoidal permanent magnet of 2-, 3-rectangular permanent magnet, 4-sulculus copper sheet, 5-end ring, the 6-collar, 7-screw, 8-baffle plate, 9-butterfly spring, 10-pole core, 11-key.
Embodiment
Below in conjunction with accompanying drawing, the preferred embodiment of the present invention is elaborated,
A kind of pole core rotor improving magneto starting performance, as shown in figures 9 and 11, rotating shaft 1, monolateral trapezoidal permanent magnet 2, rectangular permanent magnet 3, sulculus copper sheet 4, end ring 5, the collar 6, screw 7, baffle plate 8, butterfly spring 9, pole core 10 and key 11 is comprised;
Be illustrated in figure 1 pivot structure schematic diagram, rotating shaft 1 is the multidiameter without magnetic material, and in installation, 10 places unshakable in one's determination offer keyway;
Be illustrated in figure 2 pole core structural representation, pole core 10 is by the 10# of discoid thickness at 40mm-50mm, 15#, 20# mild steel or electrical pure iron are formed, pole core 10 center is left and is installed the manhole locating same diameter unshakable in one's determination with rotating shaft 1, the keyway installing 10 place's same sizes unshakable in one's determination with rotating shaft 1 is offered at center hole place, the number interrupted U-lag equal with motor pole number is had according to motor pole number difference outside central circular through hole, but interrupted U-lag peak is lower than 10 cylindricals unshakable in one's determination, wherein the both sides groove of interrupted U-lag offers into the monolateral dovetail groove identical with monolateral trapezoidal Nd-Fe-B permanent magnet 2 as shown in Figure 4, the bottom edge slot of interrupted U-lag offers into the rectangular channel identical with rectangular permanent magnet 3 as shown in Figure 3, on 10 cylindricals unshakable in one's determination, radially uniform rectangle sulculus of offering is for installing sulculus copper sheet 4,
Be illustrated in figure 5 I shape sulculus copper sheet structural representation, sulculus copper sheet 4 is made up of I shape brass, and wherein I shape brass two ends external part is processed with U-lag;
Be illustrated in figure 7 thimble structure schematic diagram, the collar 6 is made up of cylindric steel pipe, and wherein to install iron core place diameter compared with rotating shaft 1 little for internal diameter, and external diameter is little compared with baffle plate 8 internal diameter;
Be illustrated in figure 8 baffle arrangement schematic diagram, baffle plate 8 is made up of discoid brass, baffle center place leaves installs the slightly large diameter manhole in 10 places unshakable in one's determination compared with rotating shaft 1, on baffle plate 8 cylindrical, radially uniform offering installs the rectangle sulculus of sulculus copper sheet 4 same position for installing sulculus copper sheet 4 with unshakable in one's determination 10, the sulculus size that this place's sulculus is offered compared with iron core place is larger, for placing the chamfering of I shape sulculus copper sheet, offer screwed hole at the sulculus two ends offered for adopting screw 7 to connect I shape sulculus copper sheet 4;
Be illustrated in figure 6 end ring structure schematic diagram, end ring 5 is made up of circular brass, circumferentially offers the screwed hole with baffle plate same position, formed objects;
Detailed embodiment as shown in Figure 9, in the keyway offered with pole core 10 cooperation place key 11 being installed on rotating shaft 1, suitable sheet number is selected to realize being connected by key 11 and rotating shaft 1 with the keyway offered at center hole place by the manhole at pole core 10 center according to Len req pole core 10, the circumference of the transmission and pole core 10 that realize moment of torsion by key 11 is fixed, realized the unidirectional axial restraint of pole core 10 by the interference fit of the collar 6 and the positioning step of rotating shaft 1, ensure that 10 phase countershafts 1 unshakable in one's determination axial displacement do not occur, as shown in figure 11, monolateral trapezoidal permanent magnet 2 is positioned in the groove of interrupted U-lag both sides, adhesive is adopted to be fixed as one rectangle Nd-Fe-B permanent magnet 3 and butterfly spring 9, then be installed in the base channel of interrupted U-lag, baffle plate 8 is installed for preventing the axial displacement of rectangle Nd-Fe-B permanent magnet 3 and monolateral trapezoidal permanent magnet 2 at pole core 10 two ends, I shape sulculus copper sheet 4 is assigned in the rectangle sulculus pole core 10 and baffle plate 8 cylindrical place offered, utilize screw 7 by end ring 5 at I shape sulculus copper sheet 4 two ends, baffle plate 8 press-fits connection, thus by I shape sulculus copper sheet 4, end ring 5 and baffle plate 8 are joined together to form mouse cage starting structure.
Since then, a kind of pole core rotor structure improving magneto starting performance is just completed.
Be rotor part right view during the present embodiment inoperative as shown in figure 11, now, rectangle Nd-Fe-B permanent magnet 3 in interrupted U-lag base channel is near rotating shaft 1, internal circulation is formed with the monolateral trapezoidal Nd-Fe-B permanent magnet 2 in the both sides groove of interrupted U-lag, without the magnetic line of force between pole core 10 and stator core, in motor starting process, along with the rising of rotating speed, the centrifugal force that rectangle Nd-Fe-B permanent magnet 3 in interrupted U-lag base channel bears also corresponding increase, rectangle Nd-Fe-B permanent magnet 3 in interrupted U-lag base channel starts outside movement, the internal circulation that rectangle Nd-Fe-B permanent magnet 3 in interrupted U-lag base channel and the monolateral trapezoidal Nd-Fe-B permanent magnet 2 in the groove of both sides are formed reduces, when rotating speed rises to rated speed, as shown in Figure 10, without internal circulation between monolateral trapezoidal Nd-Fe-B permanent magnet 2 in rectangle Nd-Fe-B permanent magnet 3 in interrupted U-lag base channel and both sides groove, the magnetic line of force that permanent magnet produces all forms loop by stator core, when motor stopping, rotating speed starts slowly to decline, the centrifugal force that rectangle Nd-Fe-B permanent magnet 3 in interrupted U-lag base channel bears also starts to reduce, rectangle Nd-Fe-B permanent magnet 3 under the effect of butterfly spring in interrupted U-lag base channel starts to move inward, the internal circulation that rectangle Nd-Fe-B permanent magnet 3 in interrupted U-lag base channel and the monolateral trapezoidal Nd-Fe-B permanent magnet 2 in the groove of both sides are formed increases, when rotating speed is zero, rectangle Nd-Fe-B permanent magnet 3 in interrupted U-lag base channel is returned to initial point, as shown in figure 11, now, again internal circulation is formed between monolateral trapezoidal Nd-Fe-B permanent magnet 2 in rectangle Nd-Fe-B permanent magnet 3 in interrupted U-lag base channel and both sides groove.
Analysis of cases
Below for adopt the permanent magnet synchronous motor of rotor structure of the present invention with adopt conventional rotor configuration permanent magnet synchronous motor (patent No.: 201510294045.9) provide experiment comparative result in the difference of starting current multiple and starting torque multiple, as shown in the table:
As can be seen from the table, rotor structure of the present invention is adopted all to reduce 1 times have a surplus (detent torque except TYCKK4504-8 (10kv) generator) for different its starting current multiple of magneto alternator of multiple progression and starting torque multiple.
In order to content of the present invention and implementation method are described, this specification gives specific embodiment, and the object introducing details is not in an embodiment the scope of restriction claims, but helps to understand the method for the invention.One skilled in the art should appreciate that: in the spirit and scope not departing from the present invention and claims thereof, to the various amendments of most preferred embodiment step, change or to replace be all possible.Therefore, the present invention should not be limited to the content disclosed in most preferred embodiment and accompanying drawing.
Claims (4)
1. improve a pole core rotor for magneto starting performance, it is characterized in that: comprise rotating shaft (1), monolateral trapezoidal permanent magnet (2), rectangular permanent magnet (3), sulculus copper sheet (4), end ring (5), the collar (6), screw (7), baffle plate (8), butterfly spring (9), pole core (10) and key (11), rotating shaft (1) is the multidiameter without magnetic material, and in installation, (10) place unshakable in one's determination offers keyway, pole core (10) center is left and is installed the manhole locating same diameter unshakable in one's determination with rotating shaft (1), the keyway installing (10) place unshakable in one's determination same size with rotating shaft (1) is offered at center hole place, the number interrupted U-lag equal with motor pole number is had according to motor pole number difference outside central circular through hole, but interrupted U-lag peak is lower than (10) cylindrical unshakable in one's determination, wherein the both sides groove of interrupted U-lag offers into the monolateral dovetail groove identical with monolateral trapezoidal permanent magnet (2), the bottom edge slot of interrupted U-lag offers into the rectangular channel identical with rectangular permanent magnet (3), on (10) cylindrical unshakable in one's determination, radially uniform rectangle sulculus of offering is for installing sulculus copper sheet (4), sulculus copper sheet (4) is I-shape construction, and its two ends external part is processed with U-lag, the collar (6) is cylindric, and wherein internal diameter is little compared with rotating shaft (1) installation iron core place diameter, and external diameter is little compared with baffle plate (8) internal diameter, baffle plate (8) is identical with pole core (10) diameter discoid, the center leaves comparatively rotating shaft (1) and installs the slightly large diameter manhole in (10) place unshakable in one's determination, on baffle plate (8) cylindrical, radially uniform offering installs the rectangle sulculus of sulculus copper sheet (4) same position for installing sulculus copper sheet (4) with (10) unshakable in one's determination, the sulculus size that this place's sulculus is offered compared with iron core place is larger, for placing the chamfering of sulculus copper sheet (4), screwed hole is offered for adopting screw (7) to connect sulculus copper sheet (4) at the sulculus two ends offered, end ring (5), for circular, circumferentially offers the screwed hole with baffle plate same position, formed objects,
Annexation:
First in the keyway offered with pole core (10) cooperation place key (11) being installed on rotating shaft (1), suitable sheet number is selected to realize being connected by key (11) and rotating shaft (1) with the keyway offered at center hole place by the manhole at pole core (10) center according to Len req pole core (10), the circumference of the transmission and pole core (10) that realize moment of torsion by key (11) is fixed, realized the axial restraint of pole core (10) by the interference fit of the collar (6) and the positioning step of rotating shaft (1), ensure that (10) phase countershaft (1) unshakable in one's determination axial displacement does not occur, monolateral trapezoidal permanent magnet (2) is positioned in the groove of interrupted U-lag both sides, adhesive is adopted to be fixed as one rectangular permanent magnet (3) and butterfly spring (9), then be installed in the base channel of interrupted U-lag, baffle plate (8) is installed for preventing the axial displacement of rectangular permanent magnet (3) and monolateral trapezoidal permanent magnet (2) at pole core (10) two ends, sulculus copper sheet (4) is assigned in the rectangle sulculus pole core (10) and baffle plate (8) cylindrical place offered, utilize screw (7) by end ring (5) at sulculus copper sheet (4) two ends, baffle plate (8) press-fits connection, thus by sulculus copper sheet (4), end ring (5) and baffle plate (8) are joined together to form mouse cage starting structure.
2. a kind of pole core rotor improving magneto starting performance according to claim 1, it is characterized in that: described pole core (10) is for discoid, thickness, between 40mm-50mm, is made up of 10#, 15#, 20# mild steel or electrical pure iron.
3. a kind of pole core rotor improving magneto starting performance according to claim 1, is characterized in that: described sulculus copper sheet (4), baffle plate (8) and end ring (5) are made up of the metal material that electric conductivity is good.
4., according to the arbitrary described a kind of pole core rotor improving magneto starting performance of claim 1-3, it is characterized in that: the described collar is made up of high-hardness.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201510611137.5A CN105226906B (en) | 2015-09-23 | 2015-09-23 | A kind of pole core rotor for improving magneto starting performance |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510611137.5A CN105226906B (en) | 2015-09-23 | 2015-09-23 | A kind of pole core rotor for improving magneto starting performance |
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| CN105226906A true CN105226906A (en) | 2016-01-06 |
| CN105226906B CN105226906B (en) | 2017-07-04 |
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| CN201510611137.5A Active CN105226906B (en) | 2015-09-23 | 2015-09-23 | A kind of pole core rotor for improving magneto starting performance |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107863830A (en) * | 2017-12-26 | 2018-03-30 | 宁波菲仕运动控制技术有限公司 | A kind of permanent-magnetic synchronous motor rotor component and its manufacture method |
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| CN1461090A (en) * | 2003-06-24 | 2003-12-10 | 哈尔滨工业大学 | Permanent magnetic motor rotor capable of automatically regulating magnetism |
| CN101783536A (en) * | 2009-10-22 | 2010-07-21 | 上海海事大学 | Automatic field-weakening method for built-in permanent magnet synchronous motor |
| CN104254968A (en) * | 2011-12-19 | 2014-12-31 | 葆德电气公司 | Rotor for a line start permanent magnet machine |
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2015
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| JPS56145760A (en) * | 1980-04-09 | 1981-11-12 | Hitachi Ltd | Self-starting type permanent magnet synchronous motor |
| JPH0965591A (en) * | 1995-08-24 | 1997-03-07 | Toyota Motor Corp | Permanent magnet motor |
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| CN101783536A (en) * | 2009-10-22 | 2010-07-21 | 上海海事大学 | Automatic field-weakening method for built-in permanent magnet synchronous motor |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107863830A (en) * | 2017-12-26 | 2018-03-30 | 宁波菲仕运动控制技术有限公司 | A kind of permanent-magnetic synchronous motor rotor component and its manufacture method |
| CN107863830B (en) * | 2017-12-26 | 2024-04-05 | 宁波菲仕运动控制技术有限公司 | Permanent magnet synchronous motor rotor assembly and manufacturing method thereof |
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| CN105226906B (en) | 2017-07-04 |
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