What are the applications of frequency converters in escalators? What are the advantages of applicat

I don't know other aspects, but I only know that the escalator can realize the frequency conversion and energy saving, so that the escalator can run at high speed when there is someone, and run at low speed or even stop when there is no one.

The biggest advantage is energy saving, prolonging the life of the escalator, and reducing the frequency of loss of escalator parts.

In the case of the change of quantity, the speed can be automatically adjusted to achieve the effect of energy saving and reducing wear.

Escalators and moving walks are widely used in hotels, shopping malls, subways, railway stations, office buildings, halls, airports and other places, and play a very important role in facilitating customers and improving service quality. However, due to the particularity of its use occasion, some escalators are often in a state of idling, which will waste a lot of electrical energy, and also cause unnecessary wear and fatigue damage to escalator parts (such as motors, gearboxes, handrails, etc.). This is why a frequency converter is required.

Applications of frequency converters:

The main function is to adjust the speed of the escalator, start and run smoothly, when no one is manned, after a delay, the system automatically turns to crawling operation, in order to achieve the purpose of energy saving. The entrance of the escalator is installed with a photoelectric switch, when there are passengers, the photoelectric switch sends a signal, the escalator is regulated to the rated speed by frequency conversion, and when all passengers leave the escalator, the escalator automatically enters the low-speed operation state to wait for passengers. Save electricity, reduce mechanical wear and tear, and extend service life.

Advantages: 1) Obvious power saving: the load carried by the escalator motor is a constant torque load, because the speed of the escalator motor is reduced to half of the normal speed when there is no one, so the motor power is reduced to half of the original at this time.

2) Reduce wear: Due to the decrease in speed, the wear and tear of mechanical parts is greatly reduced and the maintenance cost of escalators is doubled.

3) Safe and reliable: After using the frequency conversion governor, in addition to the original motor protection function, due to the reduction of motor speed, the temperature rise of the motor can be greatly reduced, so that the work of the motor is more safe and reliable.

Function: The special inverter for the elevator improves the efficiency of the elevator, runs smoothly and prolongs the life of the equipment. The control of the elevator inverter to the elevator is S-type, that is, the speed of starting and stopping and returning to the shed is relatively slow, and the intermediate process, the acceleration is relatively fast, mainly for the comfort of the ride, and energy saving is also one aspect, which is the general advantage of the inverter.

The difference between the inverter with the elevator function and the elevator function with only the elevator function is as follows: first, the inverter construction elevator has the function of adjustable speed, and the running speed can be freely adjusted by the customer according to the speed of the project! Second, the frequency conversion construction elevator has a very large protective effect on the motor.

We all know that at the moment when the motor starts, the current is very large, so that every time it starts, the damage to the motor is very serious. The current of the variable frequency construction elevator is gradually increased when starting, which effectively protects the motor, increases the service life of the motor and reduces the failure rate. Third, the elevator with frequency conversion function is not bright and stable in all aspects of starting, running and braking, which avoids sudden start, unstable operation, brake emergency stop, etc., and also increases the service life of the elevator to a certain extent.

Fourth, we all know that the voltage of many new construction sites is very unstable, resulting in the construction elevator not being able to start or burning out the motor. The use of frequency conversion construction elevator will be very effective to solve the situation that the construction elevator cannot be started due to insufficient voltage and avoid the situation that the voltage is unstable and burns out the motor. Fifth, the variable frequency construction elevator is more energy-saving than the traditional construction elevator.

Sixth, because the motor and reducer of the elevator are top-mounted because of the frequency conversion construction, which saves the space in the cage and makes the available space in the cage larger! In addition, the frequency conversion construction elevator also has certain advantages over the traditional elevator in terms of safety, but because the frequency converter is currently higher, so it is not fully popularized, we have reason to believe that in the near future, the frequency conversion construction elevator will surpass the traditional elevator and become the mainstream of the market! <>

The elevator needs to be comfortable and needs the elevator to accelerate slowly, which involves the problem of motor speed regulation

1. Other speed regulation methods, such as series resistance speed regulation: it reduces the voltage inside the motor by connecting a resistance in series to reduce the speed, and the disadvantage is that a certain amount of energy will be consumed on the series resistance;

2. This situation does not exist with the inverter, which directly controls the output frequency and voltage to drive the motor, and there is no additional consumption.