Patent ID: 7977901

Claim:
An electromechanical machine control system comprising: an FV transformer for outputting an induced electromotive force reference which is proportional to a frequency of a speed reference, an integrator for integrating the speed reference to generate a position reference, an inverter circuit for supplying a driving power based on the position reference to an electromechanical machine, a current coordinate transformer for coordinate transforming a current detection value of the electromechanical machine which is inputted into a γ-axis current having the same phase as the position reference and a δ-axis current having a phase which advances 90 degrees further than the position reference, a δ-axis stabilizer for linearly differentially controlling the δ-axis current which is inputted to output a δ-axis voltage correction amount, and a δ-axis stabilizing gain regulator for regulating a linear differential control gain of the δ-axis stabilizer, wherein a speed of the electromechanical machine is variably controlled on the basis of the induced electromotive force reference and the δ-axis voltage correction amount.