variable frequency motor

Working principle of frequency conversion motor

Frequency conversion motor can play such an important role, and its structure is inseparable. Its working principle is based on the construction principle, so we need to understand its construction principle first. When it comes to the construction principle of frequency conversion motor, it is simply the combination of motor and frequency converter. Through the adjustment of the frequency converter, the motor can work periodically according to the fluctuation of frequency, so as to achieve the degree of automatic or semi-automatic machinery, high efficiency and stable performance. Frequency conversion motor is mainly composed of two parts: motor and frequency converter. The function of frequency converter here is to adjust the frequency of the machine. After the machinery and electricity, frequency converter to work properly, the frequency control in a certain range, the motor always stay in a stable state, not because of long time work, and lead to changes in the motor working (rotation) frequency, so that it can be a mechanical always in an efficient and stable working status, to improve the work efficiency of semi-automatic machine.

The difference between variable frequency motor and ordinary motor

At present, there is no unified standard for frequency conversion motor produced by domestic manufacturers. Basically, it is based on self-development. The main differences with ordinary motors are :(1), using the original frame number and various standard sizes. This facilitates selection and application. In the selection of frequency conversion special motor can be in accordance with the standard size of ordinary asynchronous motor selection. (2) Forced air cooling is adopted. At the end of the motor, a special air barrel is equipped with a fan to force air cooling the motor. Because frequency conversion speed regulation will appear at low speed heat dissipation problem. (3) Proper improvement of magnetic circuit or material has a better effect on the suppression of high order harmonics and ensures sufficient torque output at low speed.