DEFINING MOMENT INDUCTION MOTORS AT STARTING

The article describes the method of determining the parameters of the mains for the frequency-controlled induction motor under heavy starting and pulling away. It is established that the use of a regression model displays polynomial dependence starting torque and current on the amplitude and frequency of the supply voltage allows you to get the maximum starting torque with minimum start-up current with the magnetization curve for technological mechanisms in heavy pulling away and start-up. The regression model is obtained by experimental design, the input parameters are determined on the basis of a mathematical model of three-phase induction motor in the coordinate system. To approximate the magnetization curve of the experimental data the authors proposed to use the Lock (Verzyera) Agnesi, which displays the actual processes in the low-frequency power.