A three-phase asynchronous motor with improved stall torque and reduced stall current

Abstract

The invention discloses a three-phase asynchronous motor capable of increasing stall torque and reducing stall current, comprising a frame, an end cover, a casing, a rectifier, a junction box, a rotating shaft, and an eccentric drive part. The front end of the frame is mounted with bolts There is a vertical end cover, and the rear end of the base is bolted to a horizontal cover. While meeting the normal power demand, the present invention can increase the locked-rotor torque and reduce the locked-rotor current. When the motor is locked, the torque can be increased by itself, so as to force the motor to overcome the excessive load and resume normal rotation. At the same time, when the motor is locked, it can connect the consumption resistance to the circuit by itself, which can reduce the current of the locked rotor and reduce the damage to the stator winding, thus prolonging the service life of the motor, and also saving the maintenance time and reducing the trouble. Necessary resources are wasted, so as to be more environmentally friendly and efficient.

Description

Technical field [0001] The present invention relates to a three-phase asynchronous motor, and more particularly to a three-phase asynchronous motor that improves the blocking torque to reduce the blocking current. Background technique [0002] Motor blocking is a case where the motor still outputs torque when the speed is 0, which is generally caused by mechanical or artificial reasons. It is caused by a mechanical failure of the motor load, dragging mechanical failure, bearing damage to the temple. The motor cannot start or stop the rotation, when the motor is extremely low, the current when the plug is turned (called the conversion current) 7 times the maximum value of the rated current, and the time will burn the motor, so it is improved. Blocking torque reduces blocking current to protect the motor, the life of the extension motor is becoming more important. At present, most of them use high-power motors to reduce the probability of blocking of motors, which causes a certain ...

AI Technical Summary

Problems solved by technology

At present, most of them use high-power motors to reduce the probability of motor stalls. This method will cause a certain waste of resources, so a new type of device is needed to solve this problem.

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