Rotor punching sheet of double-cage induction motor

A technology of induction motor and rotor punching, which is applied to asynchronous induction motors, electrical components, electromechanical devices, etc., can solve the problems of large starting current and low starting torque, achieve simple structure, obvious effect, and improve starting performance. and work performance

Inactive Publication Date: 2009-11-18
WUXI ZHONGDA MOTORS
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  • Abstract
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  • Claims
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Problems solved by technology

The main disadvantage of the three-phase induction motor is that the starting current is large and the st

Method used

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  • Rotor punching sheet of double-cage induction motor

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[0012] In the following, the present invention will be further described in conjunction with the embodiments in the drawings:

[0013] Such as figure 1 As shown, it includes a rotor punch body 1, a starting cage groove 2, an upper cage guide bar 3, a working cage groove 4, and a lower cage guide bar 5. The rotor punch body 1 is punched with a starting cage groove 2 and a working cage groove 4. The upper cage guide bar 3 and the lower cage guide bar 5 are put into the starting cage slot 2 and the working cage slot 4 respectively to form two sets of independent upper and lower cage windings. The upper and lower cage windings can be independent of each other or have Common end ring.

[0014] The rotor punch body of the present invention is provided with two sets of cage windings, and the upper and lower cage windings can be independent of each other or have a common end ring. Under the same bar current, the leakage flux of the lower cage windings is always much more than that of the ...

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Abstract

The invention relates to a rotor punching sheet of a double-cage induction motor, which comprises a rotor punching sheet body. The rotor punching sheet is characterized in that the rotor punching sheet body is punched with a starting cage groove and a working cage groove, and an upper cage conducting bar and a lower cage conducting bar are put into the starting cage groove and the working cage groove respectively to form two sets of mutually independent vertical cage-shaped windings. The upper cage-shaped winding is generally made of materials with high electric resistivity such as brass or aluminum, bronze and the like, and the lower cage-shaped winding is made of a red copper material. The rotor punching sheet of the double-cage induction motor has a simple, compact and reasonable structure, has obvious action effect, and improves the starting performance and working performance by changing the shape of a rotor groove and using the skin effect of the motor under the situation of not changing the structural material and under the condition of ensuring the qualified magnetic property of the motor.

Description

technical field [0001] The invention relates to a rotor punch of a double-cage induction motor, which is mainly used for improving the starting performance and working performance of the motor. Background technique [0002] A motor is a device that converts electrical energy into mechanical energy, and is widely used as a drive in various modern machines. Especially the three-phase induction motor has many advantages such as simple structure, easy control, high efficiency and large power. The main disadvantage of the three-phase induction motor is that the starting current is large and the starting torque is not large. When the induction motor is started, we hope to increase the starting torque and reduce the starting current. It is better to design the rotor resistance to be larger, but in order to improve efficiency, it is better to design the rotor resistance to be smaller. In normal operation, this is not difficult for wound-type induction motors, but it is difficult f...

Claims

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Application Information

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IPC IPC(8): H02K17/18
Inventor 魏现东
Owner WUXI ZHONGDA MOTORS
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