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What Is The Principle Of Working Of Elevator Gearless Traction Machine ?
May 28, 2018

Permanent magnet synchronous gearless traction machine, including two series of inner rotor and outer rotor structures, mainly consists of permanent magnet synchronous motor, braking system and traction sheave. Its principle is by rapid current tracking of frequency conversion device and high precision of speed sensor (encoder) testing, feedback and control, with the synchronous speed rotation, with the linear dc motor, a constant torque and the adjustable speed motor direct drive smoothly traction sheave, through the traction sheave and the wire rope friction to realize the up and down movement of the elevator cabin. This machine combines the advantages of ac motor and dc motor and realizes the special performance of dc motor with a simple ac frequency conversion device.


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