CN105553213A - High-speed brushless DC motor - Google Patents
High-speed brushless DC motor Download PDFInfo
- Publication number
- CN105553213A CN105553213A CN201610075951.4A CN201610075951A CN105553213A CN 105553213 A CN105553213 A CN 105553213A CN 201610075951 A CN201610075951 A CN 201610075951A CN 105553213 A CN105553213 A CN 105553213A
- Authority
- CN
- China
- Prior art keywords
- teeth portion
- stator core
- speed brushless
- rotor
- iron core
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K29/00—Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/14—Stator cores with salient poles
- H02K1/141—Stator cores with salient poles consisting of C-shaped cores
- H02K1/143—Stator cores with salient poles consisting of C-shaped cores of the horse-shoe type
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/20—Stationary parts of the magnetic circuit with channels or ducts for flow of cooling medium
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K21/00—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets
- H02K21/12—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2213/00—Specific aspects, not otherwise provided for and not covered by codes H02K2201/00 - H02K2211/00
- H02K2213/03—Machines characterised by numerical values, ranges, mathematical expressions or similar information
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
Abstract
The invention discloses a high-speed brushless DC motor. The high-speed brushless DC motor comprises a stator and a rotor, wherein the stator comprises a stator iron core and a winding, the stator iron core comprises an annular yoke art and tooth parts, the tooth parts are arranged on the yoke part and extend towards the axis of the yoke part, the stator iron core comprises the three tooth parts uniformly arranged along a circumferential direction, a fixed notch and a positioning hole are arranged on each tooth part, the center of the fixed notch is consistent with the centers of the tooth parts, the winding is wound on each tooth part, and the rotor is arranged on the stator iron core. Compared with the prior art, the high-speed brushless DC motor has the advantages that on one hand, the positioning holes have effects of guiding and initially positioning the stator iron core, and on the other hand, ventilation passages are provided, the maximum area of the stator iron core is in contact with air, and the cooling efficiency is high; and meanwhile, the fixing notches are used for fixing the stator iron core in the circumferential direction. The high-speed brushless DC motor is simple and reasonable in structure, and is convenient to install and disassemble.
Description
Technical field
The invention belongs to technical field of motors, be specifically related to a kind of high-speed brushless DC electromotor.
Background technology
At present, brushless electric machine comprises stators and rotators, and stator comprises stator core and winding, and stator core is formed to stacking along motor shaft by stator chip.The yoke portion that stator core comprises ring-type and the teeth portion of inwardly stretching out from yoke portion, winding is wound in teeth portion.
In prior art, the mounting means of stator is complicated, and installation and removal trouble, can not meet need of production.
Summary of the invention
In order to solve the problems of the technologies described above, the invention provides a kind of high-speed brushless DC electromotor.
In order to achieve the above object, technical scheme of the present invention is as follows:
The invention provides a kind of high-speed brushless DC electromotor, comprising:
Stator, comprise stator core and winding, stator core comprise annular yoke portion and in yoke portion to the teeth portion that its axle center is extended, stator core comprises three teeth portion along the circumferential direction evenly arranged, each teeth portion is provided with fixing notch and location hole, the center of fixing notch is consistent with the center of described teeth portion, and winding is wound in each teeth portion;
Rotor, it is installed on stator core.
Wherein, teeth portion obtains constant magnetic flux by the permanent magnet of rotor, is delivered to two other teeth portion gets back to another pole of permanent magnet by air gap again and form closed-loop path by both sides, yoke portion.The electrified wire of teeth portion coiling suitable parameters simultaneously, by correct mode to winding power, produces the coupling in two magnetic fields, thus provides continuous print moment to export to rotor.
The present invention is compared to prior art, location hole plays the effect of guiding and Primary Location on the one hand to stator core, there is provided vent passages on the other hand, stator core maximum area is contacted with air, cooling effectiveness is high, and meanwhile, fixing notch is fixed stator core at circumferencial direction, simple and reasonable, be convenient to installation and removal.
On the basis of technique scheme, also can do following improvement:
As preferred scheme, the both sides of the head of above-mentioned teeth portion are along the circumferential direction extended projection, and the end of projection is arc.
Adopt above-mentioned preferred scheme, the end of projection is arc, avoids producing local magnetic saturation, avoids generating heat seriously during motor high speed rotating.
As preferred scheme, the projection closed on mutually of above-mentioned arbitrary neighborhood teeth portion is 2.5-4mm in the distance of circumferencial direction, the thickness of the root of teeth portion is 3-7mm, and the outer diameter in yoke portion differs 3-5mm with the size of its inner diameter, and the gap of stator core and rotor is 0.5-0.75mm.
Adopt above-mentioned preferred scheme, the size design of stator core and rotor, the efficiency of motor can be made to reach optimum state.
As preferred scheme, the yoke portion of above-mentioned stator core is consistent with the magnetic flux density of teeth portion and be undersaturated condition.
Adopt above-mentioned preferred scheme, because of the motor speed of demand higher (10kr/min), the teeth portion of stator punching, yoke portion all can not be saturated and magnetic flux density is basically identical, otherwise heating is serious, therefore, the yoke portion of stator core is consistent with the magnetic flux density of teeth portion and be undersaturated condition, when motor runs up, avoids heating serious.
As preferred scheme, the pole embrace of above-mentioned stator core is 0.6.
Adopt above-mentioned preferred scheme, control another main points that inductance value is design of electrical motor.Because adopting the design of fractional-slot, decrease the length of magnetic path preferably, select little pole embrace, the pilot coiling circle number of turn all brings obvious inductance value and declines, make motor speed higher and be easier to control, can drive smoothly with position sensor and position-sensor-free driver, and larger output power value can be provided, raise the efficiency.
As preferred scheme, above-mentioned rotor is the hollow cylindrical permanent magnet with preseting length, and the outer wall of described rotor is provided with adapter sleeve.
Adopt above-mentioned preferred scheme, when rotor adopts bonded neodymium-iron-boron processes, form a pair pole N, S or multipair level structure, this structure and rotating shaft are combined to form rotor, and rotating shaft material can select the good carbon steel of magnetic conductivity, also can select non-magnetic stainless steel; And increasing outer surface that adapter sleeve that carbon fiber makes is bonded in magnet steel, to avoid magnet steel to get rid of under the influence of centrifugal force de-, and dynamic balancing can be done in the inner circle of both ends of the surface adapter sleeve, improve stability and the security performance of structure.
As preferred scheme, above-mentioned rotor one end is axially connected with hollow cylindrical permanent magnet.
Adopt above-mentioned preferred scheme, increase permanent magnet in the axis of rotor, provide sensor magnetic field when motor position sensor structure.
Accompanying drawing explanation
Fig. 1 is the structural representation of stator in one embodiment of the present invention.
Fig. 2 is the structural representation of one embodiment of the present invention rotor.
Wherein, 10. yoke portion, 11. teeth portion, 12. fixing notches, 13. location holes, 20. windings, 30. rotors.
Embodiment
The preferred embodiment of the present invention is described in detail below in conjunction with accompanying drawing.
In order to reach object of the present invention, as shown in Figure 1 to Figure 2, in wherein a kind of execution mode of the present invention, provide a kind of high-speed brushless DC electromotor, comprising:
Stator, comprise stator core and winding 20, stator core comprises the yoke portion 10 of annular and teeth portion 11 extended to its axle center in yoke portion 10, stator core comprises three teeth portion 11 along the circumferential direction evenly arranged, each teeth portion 11 is provided with fixing notch 12 and location hole 13, the center of fixing notch 12 is consistent with the center of teeth portion 11, and winding 20 is wound in each teeth portion 11;
Rotor 30, it is installed on stator core.
Present embodiment is compared to prior art, location hole 13 1 aspect plays the effect of guiding and Primary Location to stator core, there is provided vent passages on the other hand, stator core maximum area is contacted with air, cooling effectiveness is high, and meanwhile, fixing notch 12 is fixed stator core at circumferencial direction, simple and reasonable, be convenient to installation and removal.
Wherein, teeth portion obtains constant magnetic flux by the permanent magnet of rotor, is delivered to two other teeth portion gets back to another pole of permanent magnet by air gap again and form closed-loop path by both sides, yoke portion.The electrified wire of teeth portion coiling suitable parameters simultaneously, by correct mode to winding power, produces the coupling in two magnetic fields, thus provides continuous print moment to export to rotor.
In order to optimize implementation result of the present invention further, in another embodiment of the invention, on the basis of foregoing teachings, the both sides of the head of above-mentioned teeth portion 11 are along the circumferential direction extended projection, and the end of projection is arc.
Adopt above-mentioned preferred scheme, the end of projection is arc, avoids producing local magnetic saturation, avoids generating heat seriously during motor high speed rotating.
In order to optimize implementation result of the present invention further, in another embodiment of the invention, on the basis of foregoing teachings, the projection closed on mutually of above-mentioned arbitrary neighborhood teeth portion is 2.5-4mm in the distance of circumferencial direction, the optional 2.5mm of present embodiment, 3.2mm, 4mm, the thickness of the root of teeth portion 11 is 3-7mm, the optional 3mm of present embodiment, 6mm, 7mm, the outer diameter in yoke portion 10 differs 3-5mm with the size of its inner diameter, the optional 3mm of present embodiment, 3.5mm, 5mm, the gap of stator core and rotor 30 is 0.5-0.75mm, the optional 0.5mm of present embodiment, 0.6mm, 0.75mm.
Adopt above-mentioned preferred scheme, the size design of stator core and rotor 30, the efficiency of motor can be made to reach optimum state.
In order to optimize implementation result of the present invention further, in another embodiment of the invention, on the basis of foregoing teachings, the yoke portion 10 of above-mentioned stator core is consistent with the magnetic flux density of teeth portion 11 and be undersaturated condition.
Adopt above-mentioned preferred scheme, because of the motor speed of demand higher (10kr/min), the teeth portion of stator punching, yoke portion all can not be saturated and magnetic flux density is basically identical, otherwise heating is serious, therefore, the yoke portion 10 of stator core is consistent with the magnetic flux density of teeth portion 11 and be undersaturated condition, when motor runs up, avoids heating serious.
In order to optimize implementation result of the present invention further, in another embodiment of the invention, on the basis of foregoing teachings, the pole embrace of above-mentioned stator core is 0.6.
Adopt above-mentioned preferred scheme, control another main points that inductance value is design of electrical motor.Because adopting the design of fractional-slot, decrease the length of magnetic path preferably, select little pole embrace, the pilot coiling circle number of turn all brings obvious inductance value and declines, make motor speed higher and be easier to control, can drive smoothly with position sensor and position-sensor-free driver, and larger output power value can be provided, raise the efficiency.
In order to optimize implementation result of the present invention further, in another embodiment of the invention, on the basis of foregoing teachings, above-mentioned rotor 30, for having the hollow cylindrical permanent magnet of preseting length, the outer wall of rotor 30 is provided with adapter sleeve (not shown).
Adopt above-mentioned preferred scheme, when rotor adopts bonded neodymium-iron-boron processes, form a pair pole N, S or multipair level structure, this structure and rotating shaft are combined to form rotor, and rotating shaft material can select the good carbon steel of magnetic conductivity, also can select non-magnetic stainless steel; And increasing outer surface that adapter sleeve that carbon fiber makes is bonded in magnet steel, to avoid magnet steel to get rid of under the influence of centrifugal force de-, and dynamic balancing can be done in the inner circle of both ends of the surface adapter sleeve, improve stability and the security performance of structure.
In order to optimize implementation result of the present invention further, in another embodiment of the invention, on the basis of foregoing teachings, above-mentioned rotor 30 one end is axially connected with hollow cylindrical permanent magnet (not shown).
Adopt above-mentioned preferred scheme, increase permanent magnet in the axis of rotor 30, provide sensor magnetic field when motor position sensor structure.
Above-described is only the preferred embodiment of the present invention, it should be pointed out that for the person of ordinary skill of the art, and without departing from the concept of the premise of the invention, can also make some distortion and improvement, these all belong to protection scope of the present invention.
Claims (8)
1. a high-speed brushless DC electromotor, is characterized in that, comprising:
Stator, comprise stator core and winding, described stator core comprises the yoke portion of annular and teeth portion extended to its axle center in described yoke portion, described stator core comprises three teeth portion along the circumferential direction evenly arranged, each teeth portion is provided with fixing notch and location hole, the center of described fixing notch is consistent with the center of described teeth portion, and the described winding of described fixing notch is wound in each teeth portion;
Rotor, it is installed on described stator core.
2. high-speed brushless DC electromotor according to claim 1, is characterized in that, the both sides of the head of described teeth portion are along the circumferential direction extended projection, and the end of described projection is arc.
3. high-speed brushless DC electromotor according to claim 2, it is characterized in that, the projection closed on mutually of arbitrary neighborhood teeth portion is 2.5-4mm in the distance of circumferencial direction, and the thickness of the root of described teeth portion is 3-7mm, and the described outer diameter in yoke portion differs 3-5mm with the size of its inner diameter.
4. high-speed brushless DC electromotor according to claim 1, is characterized in that, the gap of described stator core and described rotor is 0.5-0.75mm.
5. high-speed brushless DC electromotor according to claim 1, is characterized in that, the yoke portion of described stator core is consistent with the magnetic flux density of teeth portion and be undersaturated condition.
6. high-speed brushless DC electromotor according to claim 1, is characterized in that, the pole embrace of described stator core is 0.6.
7. high-speed brushless DC electromotor according to claim 1, is characterized in that, described rotor is the hollow cylindrical permanent magnet with preseting length, and the outer wall of described rotor is provided with adapter sleeve.
8. high-speed brushless DC electromotor according to claim 7, is characterized in that, described rotor one end is axially connected with hollow cylindrical permanent magnet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610075951.4A CN105553213A (en) | 2016-02-03 | 2016-02-03 | High-speed brushless DC motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610075951.4A CN105553213A (en) | 2016-02-03 | 2016-02-03 | High-speed brushless DC motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105553213A true CN105553213A (en) | 2016-05-04 |
Family
ID=55832203
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610075951.4A Pending CN105553213A (en) | 2016-02-03 | 2016-02-03 | High-speed brushless DC motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105553213A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109088489A (en) * | 2018-09-21 | 2018-12-25 | 上海交通大学 | stator for wind-driven generator |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06292335A (en) * | 1993-04-06 | 1994-10-18 | Matsushita Electric Ind Co Ltd | Stator of brushless motor |
| CN203883562U (en) * | 2014-04-23 | 2014-10-15 | 广东威灵电机制造有限公司 | Stator core, stator and motor |
| CN104319971A (en) * | 2014-10-22 | 2015-01-28 | 华中科技大学 | Alternating current permanent magnet synchronous servo motor with damping coil |
| CN205389166U (en) * | 2016-02-03 | 2016-07-20 | 苏州工业园区星德胜电机有限公司 | High -speed brushless direct current motor |
-
2016
- 2016-02-03 CN CN201610075951.4A patent/CN105553213A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06292335A (en) * | 1993-04-06 | 1994-10-18 | Matsushita Electric Ind Co Ltd | Stator of brushless motor |
| CN203883562U (en) * | 2014-04-23 | 2014-10-15 | 广东威灵电机制造有限公司 | Stator core, stator and motor |
| CN104319971A (en) * | 2014-10-22 | 2015-01-28 | 华中科技大学 | Alternating current permanent magnet synchronous servo motor with damping coil |
| CN205389166U (en) * | 2016-02-03 | 2016-07-20 | 苏州工业园区星德胜电机有限公司 | High -speed brushless direct current motor |
Non-Patent Citations (1)
| Title |
|---|
| 谭建成: "《永磁无刷直流电机技术》", 31 May 2011 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109088489A (en) * | 2018-09-21 | 2018-12-25 | 上海交通大学 | stator for wind-driven generator |
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| PB01 | Publication | ||
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Application publication date: 20160504 |