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Application and advantages of rare earth permanent magnet synchronous motor in elevator

systemdate:2021/1/4 10:47:49 from:Shanghai Zuoli
Rare earth permanent magnet synchronous motor (REPMSM) is a new type of motor, which is widely used in various fields because of its many advantages. In particular, the application of rare earth permanent magnet synchronous motor in elevator is more common. Let's take a look at some of its advantages in elevator applications!

Elevator motor usually uses rare earth permanent magnet synchronous motor, mainly because the motor is easy to make the advantages of low speed, high power. It has compact structure and complete functions. It integrates traction motor, traction wheel, electromagnetic brake and photoelectric encoder. It is easy to install and use.

In the development and application of rare earth permanent magnet synchronous motor, especially in the elevator without machine room, the permanent magnet synchronous traction motor is installed in the elevator shaft, which not only saves the construction cost of the machine room, but also beautifies the appearance of the building.

When the elevator load changes, the rare earth permanent magnet synchronous motor adapts by adjusting the angle, and the response speed is very fast.

In order to make the elevator have good starting, braking comfort and leveling accuracy, the system adds accurate rotor position device and voltage and current detection device to determine the size and direction of motor magnetic field at any time.

The rotor position sensor (photoelectric encoder or resolver, etc.) is used in the position detection device. The car load detection device can pre measure and calculate the elevator load in various forms, such as position type, pressure type, etc., give the torque of appropriate direction and size, and output switching value, analog quantity (voltage) and frequency value (high frequency anti-interference, long-distance transmission). The advantages of rare earth permanent magnet synchronous motor in elevator application are mainly shown in the following aspects:

1. Simple and compact structure, less maintenance, safe and reliable.

2. Low noise pollution, no oil pollution, can improve the power factor, is an ideal environmental protection product.

3. It can improve the efficiency of mechanical transmission and save energy and cost.

4. Compared with the permanent magnet drive system, it has the advantages of low speed, high speed and asynchronous motor.

5. Compared with the DC gearless motor drive system, it has the advantages of higher low speed performance, speed regulation accuracy, fast response speed, long service life, less power consumption and simple maintenance.

6. In addition, the rare earth permanent magnet synchronous motor is easy to realize the ideal driving mode of elevator with low speed and high torque.

Contanct:

China · Shanghai Jiading District Malu town Baoan road 2999 Lane 22 building room 1701
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Email:Zuoli@china-d.cc