Torque adaptive winding type motor

A winding type, electric motor technology, applied in the field of stator and rotor, can solve the problems of discontinuous adjustment of external resistance of the rotor, poor assembly process, rough torque adjustment, etc., and achieve convenient daily maintenance, low production cost and simple manufacturing Effect

CN1604433AInactive Publication Date: 2005-04-06史可德
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2005-04-06
Estimated Expiration
Not applicable · inactive patent

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Abstract

This invention discloses a winded motor suitable to large torque starting, which comprises stator and rotor. The torque self-adapting winded motor cascades rotor coil circuit pre-set when starting. When rotor achieves the limit or set rotation speed, the centrifugal controller automatically gradually eliminates the resistance from rotor circuit to achieve the large torque starting. When motor load increases and speed reduces, the centrifugal automatically cascades the proper resistance into the rotor to increase torque.
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Description

technical field

[0001] The present invention relates to a three-phase asynchronous AC motor, and more particularly, the present invention relates to a stator and a rotor of a wound-type three-phase asynchronous AC motor. Background technique

[0002] The torque of the winding motor is adjustable, and the starting torque is large. For places with high starting torque requirements, such as moving bed saddles, beams, cranes, etc., winding AC motors are generally used now. In some cases, it has the incomparable advantages of squirrel-cage AC motors. However, the price of ordinary wound AC motors is higher than that of squirrel-cage AC motors, and it is inconvenient to manufacture and maintain, and its body is bulky and has many external terminals. Therefore, wound AC motors are commonly used in real life where squirrel-cage AC motors are not suitable for use. And because the resistance of ordinary wound AC motors is artificial or relay controlle...

Examples

Embodiment Construction

[0016] The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.

[0017] This example is a torque adaptive winding motor for moving a beam. Set its rated speed as 1460r / min. When the motor speed reaches 1400r / min, it can be considered that the start is completed. Start-up requires a resistance of R 0 , the length of the channel is L.

[0018] The wound motor consists of a motor stator with armature windings, a motor rotor equipped with a centrifugal controller, two end covers, a housing, bearings, etc.

[0019] The stator of the motor is composed of a stator core and an armature winding, and its structure is the same as that of a squirrel-cage AC asynchronous motor and its armature winding.

[0020] Its rotor structure see figure 2 , except that the rotor has a rotating shaft 7 and a rotor winding 9 of an ordinary wound motor, a centrifugal controller 8 is fixedly installed on the rotating shaft 7 .

[0021] ...