Rotor punching sheet of double-squirrel-cage induction motor
A technology for punching induction motors and rotors, which is applied to asynchronous induction motors, electrical components, electromechanical devices, etc. It can solve the problems of small starting torque and large starting current, so as to increase the starting torque, reduce the starting current, The effect of simple structure
Inactive Publication Date: 2012-12-26
WUXI ZHONGDA MOTORS
View PDF4 Cites 1 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
The main disadvantages of three-phase induction motors are large starting current and small starting torque
Therefore, this method is only suitable for starting with no load or light load.
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0013] Below the present invention will be further described in conjunction with the embodiment in the accompanying drawing:
[0014] like figure 1 As shown, it includes rotor punch body 1, starting cage slot 2, upper cage guide bar 3, working cage slot 4, lower cage guide bar 5, and the rotor punching body 1 punches starting cage slot 2 and working cage slot 4. The upper cage guide bar 3 and the lower cage guide bar 5 are respectively put into the starting cage slot 2 and the working cage slot 4 to form two sets of mutually independent upper and lower cage windings. The upper and lower cage windings can be independent of each other or have common end ring.
[0015] Two sets of cage-shaped windings are arranged on the punched body of the rotor in the present invention, and the upper and lower cage-shaped windings can be independent from each other or have a common end ring. Under the same bar current, the leakage flux of the lower cage winding is much more than that of the u...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention relates to a rotor punching sheet of a double-squirrel-cage induction motor. The rotor punching sheet comprises a rotor punching sheet body, and is characterized in that: a starting squirrel-cage groove and a working squirrel-cage groove are punched in the rotor punching sheet body; an upper squirrel-cage guide strip and a lower squirrel-cage guide strip are placed into the starting squirrel-cage groove and the working squirrel-cage groove respectively, so that two sets of mutually independent upper and lower squirrel-cage windings are constructed; the upper squirrel-cage winding is generally made of high-electric-resistivity materials such as brass, or aluminum and bronze; and the lower squirrel-cage winding is made of a red copper material. The rotor punching sheet is simple, compact and reasonable in structure; because the rotor punching sheet is designed with a double-squirrel-cage structure, a remarkable acting effect is achieved; and under the condition of ensuring that the magnetic performance characteristic of the motor is qualified, the starting performance and the working performance are improved by using a motor skin effect by means of changing the shape of a rotor groove. Due to the adoption of the rotor punching sheet, the starting torque can be increased, and the starting current can be reduced.
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 driving source 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 small. When the induction motor is started, it is necessary to increase the starting torque and reduce the starting current. In actual use, the rotor resistance is required to be large, but in order to improve efficiency, the rotor resistance is required to be small during design. In normal operation, it is difficult to do it for wound type induction motors. T...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Applications(China)
IPC IPC(8): H02K17/18
Inventor 张高峰
Owner WUXI ZHONGDA MOTORS