Parametric optimization of variable frequency electric drives

The methodology of multicriterion step-by-step optimization of electric drives with synchronous reluctance independent excitation machine is suggested. At the initial stage the specific costs for the electric drive components have been minimized by their redistribution between the reactive parts of the motor and semiconducting converter, then the maximum specific torques have been achieved by means of changes of the machine geometry and with account of the combined actions of converter and motor and, finally, at the final stage the structure and control system parameters have been optimized achieving the maximum accuracy.