Seriously speaking, motors are divided into ordinary motors and
Frequency conversion speed motor,
Brake motorAnd so on with different functions.Under what circumstances do I need to use a variable-frequency speed-regulating motor?
The occasions that need to use variable frequency speed regulating motor are as follows:
(1) Stepless wide speed regulation is required.Especially the high speed is above 100% of the power frequency speed, and the low speed is below 20% of the power frequency speed.
(2) The load is often in a light load state, and the speed is allowed to drop when the load is light.For example, water pumps of water supply systems, escalators, air-conditioning air supply systems, etc.At this time, there is a certain energy saving effect.
(3) Where stepless speed regulation is required, and soft start and/or soft brake are required.
(4) Where stepless speed regulation is required and the space occupied by the motor needs to be reduced.
Frequency conversion speed motorIn many aspects, the performance is better than that of ordinary motors, the most important of which is that it can achieve stepless wide speed regulation and consume less power at light load and low speed; but there are also shortcomings, such as loss and temperature rise at power frequency. It is significantly higher than that of ordinary motors, and the noise and vibration are relatively poor.The high price and the difficulty of using and maintaining frequency conversion devices are even more obvious weaknesses.Therefore, do not blindly use the variable frequency speed control motor.According to your actual working conditions, you should choose to use ordinary motors, frequency conversion motors, or brake motors, and so on.
