Adopt energy-saving and environmental protection, stable operation, low noise, small occupied permanent magnet synchronous traction machine:
1. The structure is simple, no reduction box is needed, the process is simpler, at the same time, the volume and weight are reduced, and the utilization of effective space is improved.
2. Low vibration and low noise, especially in the low-speed operation area, the advantages are more obvious, the operation is stable, and the speed regulation accuracy is high. The noise of the traditional geared elevator comes from the mechanical vibration of the gear box and the vibration and noise of the high-speed rotating motor itself. The gearless traction machine does not use a reduction box, and the rated speed of the motor is very low, so the vibration and noise of the motor itself are very small, so that the noise of the entire elevator system is greatly reduced.
3. Due to the realization of gearless speed regulation, there is no secondary deceleration process, eliminating the loss of the gear box and improving the efficiency. At the same time, after the permanent magnet is used for excitation, there is no need for excitation current and no excitation loss, which can also improve efficiency.
4. High power factor. The power factor can be as high as 0.9 or more.
5. Safe, reliable and comfortable. The use of permanent magnet synchronous motor drive can effectively prevent the elevator from rolling. At the same time, the motor can provide sufficient torque at low frequency, low pressure, and low speed to avoid the jitter of the elevator during the slow start process and improve the comfort of the elevator during the braking process.
6. Machine room-less elevators with various traction methods can be arranged, even in the arrangement of organic rooms and small machine rooms, it also shows a high degree of freedom and flexibility.
