The inverter can set the frequency to calculate the speed.
The appearance of the frequency converter makes the complicated speed control simple. The inverter + AC squirrel cage induction motor combination replaces most of the work that can only be done with DC motor, which reduces the volume and reduces the maintenance rate. Technology has reached a new stage.
The first is the most basic formula of the motor pn=60f, P is the pole pair of the motor, N is the speed, and f is the frequency. This formula does not consider the slip rate. The motor generally has a slip rate of 5% or less. For example, a motor with a rated speed of 1500 is normally calibrated to be 1480. This is caused by the slip of the asynchronous motor. If you Need more accurate results, then you can do some compensation in the program.
Formula of motor speed and frequency
n=60f/p
among them
N——motor speed (rev / min)
60 - every minute (seconds)
f——Power frequency (Hz)
P——the pole number of the rotating magnetic field of the motor
The pole logarithm is given on the motor nameplate and can be calculated according to the actual situation.
If you want to buy a medical device motor, please pay attention to Blood Pressure Meter Motor.
