Brushless excitation control system of variable-speed synchronous motor

摘要

PURPOSE:To provide a brushless excitation controller for an accurate, small variable speed synchronous motor for an abrupt load change, a wide speed control. CONSTITUTION:A frequency of an induced AC of a rotor winding 9 is controlled as a function of a time change rate (dis/dt) of an armature current is of a main machine 4 by using an induction machine type AC exciter.