CN104716807A - Cage-shaped brushless double-fed alternating-current motor with heterogeneous rotor - Google Patents
Cage-shaped brushless double-fed alternating-current motor with heterogeneous rotor Download PDFInfo
- Publication number
- CN104716807A CN104716807A CN201510163287.4A CN201510163287A CN104716807A CN 104716807 A CN104716807 A CN 104716807A CN 201510163287 A CN201510163287 A CN 201510163287A CN 104716807 A CN104716807 A CN 104716807A
- Authority
- CN
- China
- Prior art keywords
- rotor
- cage
- isomery
- brushless double
- end cap
- 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.)
- Granted
Links
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 24
- 229910052802 copper Inorganic materials 0.000 claims abstract description 24
- 239000010949 copper Substances 0.000 claims abstract description 24
- 238000004080 punching Methods 0.000 claims abstract description 7
- 238000009413 insulation Methods 0.000 claims description 7
- 229910000976 Electrical steel Inorganic materials 0.000 claims description 4
- 238000009826 distribution Methods 0.000 claims description 4
- 238000000034 method Methods 0.000 claims description 4
- 238000003466 welding Methods 0.000 claims description 3
- 238000004804 winding Methods 0.000 abstract description 10
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract description 4
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000006243 chemical reaction Methods 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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
- H02K1/22—Rotating parts of the magnetic circuit
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K17/00—Asynchronous induction motors; Asynchronous induction generators
- H02K17/02—Asynchronous induction motors
- H02K17/16—Asynchronous induction motors having rotors with internally short-circuited windings, e.g. cage rotors
Abstract
The invention discloses a cage-shaped brushless double-fed alternating-current motor with a heterogeneous rotor structure. The cage-shaped brushless double-fed alternating-current motor is characterized in that a rotor comprises heterogeneous end covers, a rotor iron core and a rotary shaft, wherein all punching pieces of the rotor iron core are provided with a plurality of groove holes, and copper strips are embedded into the groove holes in an insulated manner. In the same quadrant, from the symmetrical axis to the outer edge, the groove holes are distributed in a mode of in-sequence and symmetric increase of the diameter. The heterogeneous end covers are formed by embedding of conductive parts and insulating parts, the positions and the shapes of the two end parts of the conductive parts correspond to the groove holes, and the end parts with the equal diameter in the same quadrant are connected in sequence by a two-two manner. The cage-shaped brushless double-fed alternating-current motor disclosed by the invention has the beneficial effects that the form of combining the heterogeneous end covers and the copper strips of the rotor is adopted, the structure is compact, the connecting strength is enhanced, the problem of looseness and throwing out of connecting guide lines at the end parts of the short-circuit cage-shaped rotor when in high-speed rotation is solved, so that the reliability of the motor is improved; and since the embedded copper strips with different sectional surfaces are adopted, the basic equalization of the currents among different short-circuit windings is ensured, so that the electromagnetic torque provided by all guiding strips is more uniform, and the electromechanical energy conversion efficiency is higher.
Description
Technical field
The present invention relates to alternating current machine, particularly relate to a kind of cage modle brushless double feed alternating current machine with isomery rotor.
Background technology
Existing brushless double feed alternating current machine, stator core embeds the double winding that number of pole-pairs is different, is respectively power winding and controlled winding, and rotor then mainly contains wound rotor, cage-type rotor, reluctance rotor or composite rotors structure.In these rotor structures, cage-type rotor is simple due to structure, obtains increasingly extensive application.Present stage, cage type rotor structure mainly contains short circuit cage-type rotor and the conventional cage-type rotor wearing copper bar, although both structural similarities, technological requirement exists very big-difference.The rotor that routine wears copper bar insulate without standing groove, all can weld together at rotor tip end ring, and short circuit type cage-type rotor must have slot liner, and also to have good insulation with the end of iron core, the openend of U-shaped copper bar all can weld together with an end ring, compared with short circuit type cage-type rotor, the cage-type rotor that routine wears copper bar can ensure the equivalent saliency of rotor, exert oneself effect and the runnability of motor can be improved, but short circuit type cage-type rotor will guarantee the reliability connected when designing and producing, and require that contact resistance little is as far as possible to avoid motor the throwing away of rotor cage bar when High Rotation Speed.For this problem, the present invention combines the mentality of designing that the advantage of short circuit type rotor and conventional type wear copper bar cage-type rotor, adopts the end ring of isomery while meeting performance requirement, improve the reliability of short circuit type cage-type rotor.
Summary of the invention
The object of the invention is to overcome above-mentioned defect, a kind of compact conformation is provided, connect reliable and run torque steadily, the cage modle brushless double feed alternating current machine of the isomery rotor structure that energy converting between mechanical efficiency is high.
The cage modle brushless double feed alternating current machine with isomery rotor provided by the invention, comprise end cap, rotor core and rotating shaft, the each punching of described rotor core is provided with circumferential some slotted eyes, in described slotted eye, insulation is embedded with copper bar, in same quadrant by the axis of symmetry to outer rim, described slotted eye increases distribution so that diameter is symmetrical successively; Described end cap is isomery end cap, isomery end cap forms by conductive part is nested with insulation division, described conductive part is bar shaped, the position at its both ends is corresponding with described slotted eye with shape, the end that in same quadrant, diameter is identical is connected successively between two, and namely each strip width of described conductive part is corresponding identical respectively with the diameter of embedded each copper bar in described rotor core (7); The end of the rotor bar in described rotor core in embedded copper bar and described end cap adopts thermal expansion welding procedure to closely cooperate.
The present invention has the cage modle brushless double feed alternating current machine of isomery rotor, and wherein said slotted eye is even number, is arranged in same quadrant and is directly connected near two ends of the axis of symmetry, and all the other ends that diameter is identical are connected in 1/4 annular successively between two.
The present invention has the cage modle brushless double feed alternating current machine of isomery rotor, and wherein said rotor core each punching employing thickness is that the silicon steel sheet of 0.4 millimeter is made.
The present invention has the cage modle brushless double feed alternating current machine of isomery rotor, and the number of wherein said slotted eye and end is determined by level of torque.
The beneficial effect that the present invention has the cage modle brushless double feed alternating current machine of isomery rotor is: combine the mentality of designing that the advantage of short circuit type rotor and conventional type wear copper bar cage-type rotor, adopt the form that isomery end cap and rotor bar combine, compact conformation, strengthen bonding strength, solve short circuit cage modle rotor tip connection wire and loosen the problem thrown away when High Rotation Speed, improve motor reliability, simultaneously owing to adopting the embedded copper bar of different cross-sectional, ensure that the electric current between different short-circuited winding is substantially equal, the electromagnetic torque that each sliver is provided evenly, energy converting between mechanical efficiency is higher.
Accompanying drawing explanation
Fig. 1 is the assembling schematic diagram that the present invention has the cage modle brushless double feed alternating current machine of isomery rotor;
Fig. 2 is the structural representation of rotor iron core lamination;
Fig. 3 is the structural representation of end cap.
Embodiment
For making object of the present invention, technical scheme and effect clearly, clearly, referring to accompanying drawing, the present invention is described in more detail.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
With reference to Fig. 1, the present invention has the cage modle brushless double feed alternating current machine of isomery rotor, comprises end cap 6, rotor core 7 and rotating shaft 8.Rotating shaft 8 and rotor core 7 are fixed by key connected mode.
With reference to Fig. 2, each punching of rotor core 7 is provided with circumferential some slotted eyes 4, and in slotted eye 4, insulation is embedded with copper bar, in same quadrant by the axis of symmetry to outer rim, slotted eye 4 increases distribution so that diameter is symmetrical successively.Rotor core 7 each punching employing thickness is that the silicon steel sheet of 0.4 millimeter is made, and multilayer silicon steel sheet laminates formation rotor core mutually.The diameter of slotted eye 4 is determined according to the size of sliver, should fully insulate between sliver and rotor core.
With reference to Fig. 3, end cap 6 is isomery end cap, isomery end cap forms by conductive part 1 is nested with insulation division 2, conductive part 1 is bar shaped, the position at its both ends and shape corresponding with slotted eye 4, the end 3 that in same quadrant, diameter is identical is connected successively between two, and namely each strip width of conductive part 1 is corresponding identical respectively with the diameter of each copper bar embedded in rotor core 7.
Have in the embodiment of cage modle brushless double feed alternating current machine of isomery rotor in the present invention, slotted eye 4 is even number, in 6 ends 3, be arranged in same quadrant and be directly connected near 2 ends 3 of the axis of symmetry, identical being connected in 1/4 annular between two successively of all the other 4 end 3 diameters.The number of slotted eye 4 and end 3 is determined by level of torque.
Rotor bar end in rotor core 7 in embedded copper bar and isomery end cap 6 adopts thermal expansion welding procedure to closely cooperate.
The following describes the working method that the present invention has the cage modle brushless double feed alternating current machine of isomery rotor.
Conductive part 1 in the copper bar that rotor core 7 is embedded in slotted eye 4 and end cap 6 forms short-circuited winding closed-loop path, and the diameter of slotted eye 4 and end 3 and the diameter of embedded copper bar match.Because embedded copper bar increases distribution so that diameter is symmetrical successively, short-circuited winding closed-loop path surround size and change with the sectional area of embedded each copper bar.Sliver cross-sectional area is inversely proportional to the encirclement area of closed short-circuited winding, but minimum area should be able to ensure to flow through the maximum allowing electric current.This ensures that, the electric current flow through between different short-circuited winding substantially equal, make motor rotation more steady, the electromagnetic torque provided evenly, energy converting between mechanical efficiency is higher.The number of slotted eye 4 and end 3 and short-circuited winding closed-loop path can be determined according to actual torque size.
Rotor bar end 3 in rotor core 7 in embedded copper bar and end cap 6 adopts and closely cooperates, and improves bonding strength, solves short circuit cage modle rotor tip and connects wire and loosen the problem thrown away when High Rotation Speed.
Embodiment recited above is only be described the preferred embodiment of the present invention, not limits the spirit and scope of the present invention.Under the prerequisite not departing from design concept of the present invention; the various modification that this area ordinary person makes technical scheme of the present invention and improvement; all should drop into protection scope of the present invention, the technology contents of request protection of the present invention, all records in detail in the claims.
Claims (4)
1. one kind has the cage modle brushless double feed alternating current machine of isomery rotor, comprise end cap (6), rotor core (7) and rotating shaft (8), it is characterized in that: described rotor core (7) each punching is provided with circumferential some slotted eyes (4), in described slotted eye (4), insulation is embedded with copper bar, in same quadrant by the axis of symmetry to outer rim, described slotted eye (4) increases distribution so that diameter is symmetrical successively; Described end cap (6) is isomery end cap, isomery end cap forms by conductive part (1) is nested with insulation division (2), described conductive part (1) is bar shaped, the position at its both ends and shape corresponding with described slotted eye (4), the end (3) that in same quadrant, diameter is identical is connected successively between two, and namely each strip width of described conductive part (1) is corresponding identical respectively with the diameter of embedded each copper bar in described rotor core (7); The end of the rotor bar in described rotor core (7) in embedded copper bar and described end cap (6) adopts thermal expansion welding procedure to closely cooperate.
2. the cage modle brushless double feed alternating current machine with isomery rotor according to claim 1, it is characterized in that: described slotted eye (4) is even number, be arranged in same quadrant to be directly connected near two ends (3) of the axis of symmetry, all the other ends (3) that diameter is identical are connected in 1/4 annular successively between two.
3. the cage modle brushless double feed alternating current machine with isomery rotor according to claim 1 and 2, is characterized in that: described rotor core (7) each punching employing thickness is that the silicon steel sheet of 0.4 millimeter is made.
4. the cage modle brushless double feed alternating current machine with isomery rotor according to claim 3, is characterized in that: the number of described slotted eye (4) and end (3) is determined by level of torque.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510163287.4A CN104716807B (en) | 2015-04-08 | 2015-04-08 | Cage-shaped brushless double-fed alternating-current motor with heterogeneous rotor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510163287.4A CN104716807B (en) | 2015-04-08 | 2015-04-08 | Cage-shaped brushless double-fed alternating-current motor with heterogeneous rotor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104716807A true CN104716807A (en) | 2015-06-17 |
| CN104716807B CN104716807B (en) | 2017-01-25 |
Family
ID=53415858
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510163287.4A Active CN104716807B (en) | 2015-04-08 | 2015-04-08 | Cage-shaped brushless double-fed alternating-current motor with heterogeneous rotor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104716807B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108429402A (en) * | 2018-05-21 | 2018-08-21 | 广东上水能源科技有限公司 | A kind of motor cooling based on coolant liquid |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6459189B1 (en) * | 2000-05-08 | 2002-10-01 | Emerson Electric Co. | Diecast rotor with compound short-circuit loops and method of manufacture |
| CN2588650Y (en) * | 2002-12-27 | 2003-11-26 | 河北工业大学电工厂 | Retrofit brushless double-feeding motor |
| JP2004096910A (en) * | 2002-08-30 | 2004-03-25 | Mitsubishi Heavy Ind Ltd | High-speed induction motor |
| JP2009278784A (en) * | 2008-05-15 | 2009-11-26 | Toshiba Industrial Products Manufacturing Corp | Squirrel-cage rotor, and manufacturing method and manufacturing apparatus thereof |
| CN103390946A (en) * | 2013-07-22 | 2013-11-13 | 江苏银河长征风力发电设备有限公司 | Brushless double-fed wind turbine generator with high power density |
-
2015
- 2015-04-08 CN CN201510163287.4A patent/CN104716807B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6459189B1 (en) * | 2000-05-08 | 2002-10-01 | Emerson Electric Co. | Diecast rotor with compound short-circuit loops and method of manufacture |
| JP2004096910A (en) * | 2002-08-30 | 2004-03-25 | Mitsubishi Heavy Ind Ltd | High-speed induction motor |
| CN2588650Y (en) * | 2002-12-27 | 2003-11-26 | 河北工业大学电工厂 | Retrofit brushless double-feeding motor |
| JP2009278784A (en) * | 2008-05-15 | 2009-11-26 | Toshiba Industrial Products Manufacturing Corp | Squirrel-cage rotor, and manufacturing method and manufacturing apparatus thereof |
| CN103390946A (en) * | 2013-07-22 | 2013-11-13 | 江苏银河长征风力发电设备有限公司 | Brushless double-fed wind turbine generator with high power density |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108429402A (en) * | 2018-05-21 | 2018-08-21 | 广东上水能源科技有限公司 | A kind of motor cooling based on coolant liquid |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104716807B (en) | 2017-01-25 |
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| C14 | Grant of patent or utility model | ||
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| TR01 | Transfer of patent right |
Effective date of registration: 20231124 Address after: Q1181, Room 103, No. 137 Heguang Road, Tianhe District, Guangzhou City, Guangdong Province, 510000 Patentee after: Guangzhou Yizhi Environmental Protection Technology Co.,Ltd. Address before: Room 171, No. 225 Avenue, Guangzhou Economic and Technological Development Zone, Guangdong Province, 510630 Patentee before: GUANGDONG SHANGSHUI ENERGY TECHNOLOGY Co.,Ltd. |
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| TR01 | Transfer of patent right |