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<p>Elevator <a href="https://www.pm-motor.com/" target="_blank">motor</a>s usually use <a href="https://www.pm-motor.com/" target="_blank">permanent</a> <a href="https://www.pm-motor.com/" target="_blank">magnet</a> synchronous motors, mainly because the permanent magnet synchronous motors are easy to be made into low-speed, high-power advantages. It has a compact structure and complete functions. It integrates a traction motor, traction wheel, electromagnetic brake and photoelectric encoder. It is easy to install and easy to use. Especially in the development and application of machine roomless elevators, 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 permanent <a href="https://www.pm-motor.com/" rel="noopener noreferrer" target="_blank">magnet</a> synchronous motor adapts by adjusting the angle, and its response speed is very fast. In order to make the elevator have good starting, braking comfort and level accuracy, an accurate rotor position device and voltage and current detection device are added to the system to determine the size and direction of the <a href="https://www.pm-motor.com/" rel="noopener noreferrer" target="_blank">motor</a> magnetic field at any time. </p><p><br></p><p>The position detection device uses a rotor position sensor (photoelectric encoder or resolver, etc.). The car load detection device can adopt various forms such as position type and pressure type to pre-measure and calculate the elevator load, give the torque in the appropriate direction and size, and can output the switching value, analog value (voltage) and frequency value (high Frequency anti-interference is strong, can be transmitted over a long distance) and so on.</p><p><br></p><p>Its advantages are mainly as follows: simple and compact structure, less maintenance; high safety and reliability; low noise pollution to the environment, no grease pollution, and can improve the power factor of the power, it is an ideal environmental protection product; improve the efficiency of mechanical transmission, use energy saving, Economical, with high cost performance; compared with AC gearless asynchronous<a href="https://www.pm-motor.com/" rel="noopener noreferrer" target="_blank"> motor</a> drive system, the advantages of low speed, rapidity, hard mechanical characteristics and parking self-closing are unmatched by asynchronous motor; compared with DC gearless motor drive Compared with the system, it has higher low-speed performance, speed regulation accuracy, quick response performance, long life, less power consumption, and simple maintenance. In addition, it is easy to realize the ideal drive model of the elevator with low speed and high torque.</p>
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