ELECTRIC MOTOR CAR CONTROLLER BASED ON VECTOR CONTROL

摘要

PROBLEM TO BE SOLVED: To eliminate the influences of the ripple components of induction motor current. SOLUTION: A filter 37 is provided which removes pulsating components from an estimated value of rotor rotation frequency computed by a rotor rotation frequency computing means 28 from magnetic flux command, d-axis current, q-axis command, voltage command value, and output frequency.