Mathematical Modeling and Simulation Analysis on Speed Control System of Asynchronous Motor Based on Vector Frequency Conversion Technology

On the basis of analysis of the principle of frequency control of motor speed, and on motor unified theory, the dynamic mathematical model of three phase asynchronous motor is established under three-phase coordinate transformation, To analyse this dynamic mathematical model, a simulation model is established under Matlab/Simulink and may simulation studies are performed to verily the feasibility of the proposed vector controlled drive. The results not only indicate the validity of the dynamic mathematical model and simulation model, but also show that by adjusting simulation parameters in each model, perfect simulation waveform is got.