Introduction elevator motor

The traditional elevator drive is to use multi-gear transmission, the elevator motor is mainly used in induction elevator motor. The main problem with the gear transmission is the use of worm gears or other mechanical planetary reduction mechanism, not only caused the system structure complex, maintenance work difficult, noisy shortcomings, and the efficiency of the gear transmission is very low, such as worm gear worm gear efficiency is only 70 percent, large energy consumption of the whole system running costs. Meanwhile, this transmission mode due gearbox and traction machine larger, require large-mounted engine room, not only occupied the building thereby increasing the effective area of ​​the construction costs, but also affects the overall beauty of the building facade
     To solve these problems, from the 1990s onwards, the elevator industry related companies began to explore for new tractor. March 1996, Finland's Kone (KONE) has introduced a shocking industry 3000MoooSpace MRL, its core is EcoDisc disc magnet synchronous traction machine, thus creating a gearless elevator a new era.
     Water magnet synchronous gearless traction machine with flat, disc shape, with axial magnetic field, the radial magnetic field rotor, outer rotor radial magnetic field three structures, large radial dimension of the elevator motor, and more on the pole, is a low-speed , high torque permanent magnet synchronous elevator motor. This elevator motor is short axial dimension, light weight, small size, compact structure, the stator winding has a good cooling conditions, availability of high power density. Meanwhile, the elevator motor rotor inertia is small, mechanical and electrical time constant, peak torque and high stall torque, torque mass ratio, low running smoothly, with excellent dynamic performance.