Study Of The Power Factor Controlling System On Induction Motor Variable Frequency Mode

To save up the capacity of motor, the thesis analyzes and researches the relations which lies in the power factor, induction motor self-parameter and ,and getting a function expression. Based on the expression, we set up the Power Factor Controlling System on the basis of SPWM techniques. According to the model, we simulate and analyze the motor-control system by MATLAB/SIMULINK software. The simulation results show that the controlling system has positive effects in saving up capacity, especially when the motor is no load or little load. The paper has a high value to popularize and apply the motor system.