CN201450425U - Double-cage induction motor rotor sheet - Google Patents
Double-cage induction motor rotor sheet Download PDFInfo
- Publication number
- CN201450425U CN201450425U CN2009200429007U CN200920042900U CN201450425U CN 201450425 U CN201450425 U CN 201450425U CN 2009200429007 U CN2009200429007 U CN 2009200429007U CN 200920042900 U CN200920042900 U CN 200920042900U CN 201450425 U CN201450425 U CN 201450425U
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- cage
- slot
- starting
- induction motor
- double
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- Expired - Fee Related
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Abstract
The utility model relates to a double-cage induction motor rotor sheet, which comprises a rotor sheet body. The utility model is characterized in that a starting cage slot and a work cage slot are punched on the rotor sheet body and an upper cage conducting bar and a lower cage inducting bar are respectively placed in the starting cage slot and the work cage slot to form an upper cage-shaped winding and a lower cage-shaped winding, which are independent. The upper cage-shaped winding is often made of brass, aluminum, bronze or other high resistance rate material. The lower cage-shaped winding is made of red copper material. The utility model has the advantages of simple, compact and reasonable structure and obvious action and effect and improves the starting performance and the work performance by changing the slot shape of the rotor and using the skin effect of the motor on the condition of not changing structural material and ensuring the eligible motor magnetic performance characteristic.
Description
Technical field
The utility model relates to a kind of rotor punching of double-squirrel cage induction motor, is mainly used in to improve excellent start performance and service behaviour.
Background technology
Motor is the device that converts electric energy to mechanical energy, is widely used in the modern various machinery as driving.Three phase induction motor particularly, it have simple in structure, be easy to many advantages such as control, efficient height and power are big.The major defect of three phase induction motor is that starting current is bigger, and starting torque is little.We wished to increase starting torque, reduced starting current induction motor when starting, wish during design rotor resistance bigger for well, but in order to raise the efficiency, wish during design that rotor resistance is smaller for well.During normal operation, for Wound induction motor, this point is not difficult to accomplish, but general induction machine is difficult to accomplish, therefore, needs the cage modle motor of special rotor structure, and two cage induction motors are exactly wherein a kind of.
The starting method of general induction motor has two kinds:
1, across-the-line starting.Across-the-line starting utilizes knife switch or contactor that motor is directly received on the rated power supply exactly.Though this starting method is simple, because starting current is bigger, line voltage distribution will be descended, influence the operate as normal of load.Generally have only the asynchronous motor of power below twenty or thirty kilowatt could adopt the method for across-the-line starting to start.And do not adopt across-the-line starting usually for the bigger asynchronous motor of power.
2, reduced voltage starting.Reduced voltage starting is exactly when motor starting, reduces its added voltage.Its purpose will reduce starting current exactly.Electric current has descended 1/3,1/3 when starting torque also is reduced to across-the-line starting.Start when therefore, this method only is suitable for zero load or underloading.
Summary of the invention
The purpose of this utility model is to overcome above-mentioned weak point, is guaranteeing under the motor magnetic property characteristic acceptance condition thereby provide a kind of, utilizes the motor kelvin effect to improve the rotor punching of the double-squirrel cage induction motor of the starting performance of motor and service behaviour.
The technical scheme that provides according to the utility model, the rotor punching of two cage induction motors, comprise the rotor punching body, feature is: punching out starting cage slot and work cage slot on the described rotor punching body, last cage sliver and following cage sliver are put into starting cage slot and work cage slot respectively, constitute the separate winding of cage modle up and down of two covers.
Last cage modle winding adopts brass or aluminium, the higher material of bronze constant resistance rate to make usually, and following cage modle winding adopts the red copper material to make.
Compared with the prior art the utility model has the following advantages:
The utility model is simple, compact and reasonable for structure, and action effect is obvious; Under the situation that does not change structural material, guaranteeing by changing rotor slot shape, to utilize the motor kelvin effect to improve starting performance and service behaviour under the motor magnetic property characteristic acceptance condition.
Description of drawings
Fig. 1 is the utility model structural representation.
Embodiment
Embodiment during following the utility model is incited somebody to action in conjunction with the accompanying drawings is further described:
As shown in Figure 1, comprise rotor punching body 1, starting cage slot 2, last cage sliver 3, work cage slot 4, following cage sliver 5, punching out starting cage slot 2 and work cage slot 4 on the described rotor punching body 1, last cage sliver 3 and following cage sliver 5 are put into starting cage slot 2 and work cage slot 4 respectively, constitute the separate winding of cage modle up and down of two covers, the cage modle winding both can be separate up and down, again public end ring can be arranged.
The utility model rotor punching body is provided with two cover cage modle windings, and the cage modle winding both can be separate up and down, can also have public end ring.Under same sliver electric current, the leakage flux of following cage modle winding interlinkage is always much more than last cage modle winding, so the leakage reactance of cage modle winding is more much bigger than last cage modle winding down.Last cage modle winding is made with brass or aluminium, the higher material of bronze constant resistance rate usually, and resistance is bigger; Following cage modle winding sliver sectional area is bigger, and the lower red copper of resistivity commonly used makes, and resistance is less.During starting, last cage modle winding resistance is big, produces bigger starting torque, is called the starting cage so go up the cage modle winding; During normal the operation, following cage modle winding resistance is little, and electric current mainly concentrates on down the cage modle winding when normally moving, and produces the operation torque of motor, so the cage modle winding is called work cage down.
Because rotor punching is designed to two basket structures, to the almost not influence of punching electromagnetic performance, the increase starting torque that is obtained, the effect that reduces starting current are obvious.
Claims (3)
1. the rotor punching of a double-squirrel cage induction motor, comprise rotor punching body (1), it is characterized in that: described rotor punching body (1) is gone up punching out starting cage slot (2) and work cage slot (4), and last cage sliver (3) and following cage sliver (5) put into starting cage slot (2) respectively and work cage slot (4) constitutes the separate winding of cage modle up and down of two covers.
2. the rotor punching of double-squirrel cage induction motor according to claim 1 is characterized in that the described cage modle winding of going up adopts brass or aluminium, bronze material to make.
3. the rotor punching of double-squirrel cage induction motor according to claim 1 is characterized in that described cage modle winding down adopts the red copper material to make.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200429007U CN201450425U (en) | 2009-06-08 | 2009-06-08 | Double-cage induction motor rotor sheet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200429007U CN201450425U (en) | 2009-06-08 | 2009-06-08 | Double-cage induction motor rotor sheet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201450425U true CN201450425U (en) | 2010-05-05 |
Family
ID=42555148
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200429007U Expired - Fee Related CN201450425U (en) | 2009-06-08 | 2009-06-08 | Double-cage induction motor rotor sheet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201450425U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102843009A (en) * | 2012-09-29 | 2012-12-26 | 无锡市中达电机有限公司 | Rotor punching sheet of double-squirrel-cage induction motor |
| CN103166343A (en) * | 2011-12-09 | 2013-06-19 | 安徽明腾永磁机电设备有限公司 | Rotor sheet and rotor for permanent magnet motor |
-
2009
- 2009-06-08 CN CN2009200429007U patent/CN201450425U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103166343A (en) * | 2011-12-09 | 2013-06-19 | 安徽明腾永磁机电设备有限公司 | Rotor sheet and rotor for permanent magnet motor |
| CN103166343B (en) * | 2011-12-09 | 2015-12-16 | 安徽明腾永磁机电设备有限公司 | For rotor punching and the rotor of permanent magnet motor |
| CN102843009A (en) * | 2012-09-29 | 2012-12-26 | 无锡市中达电机有限公司 | Rotor punching sheet of double-squirrel-cage induction motor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100505 Termination date: 20100608 |