METHOD OF CROSS-CUTTING CONTROL IN WIDE RANGE OF VELOCITY OF AC ELECTRONICREACTION MOTOR

摘要

FIELD: electricity.;SUBSTANCE: method of cross-cutting control in wide range of velocity of ac electronicreaction motor, control system in wide range of velocity of ac electronicreaction motor contains the speed controller, the current breaker controller, the angular position controller, the breaker counter, the comparison selector and two resettable constants register; breaker counter counts the number of current interruptions for each electrical period, and in accordance with the comparison result between the breaker counter value and the constant value set by two constants registers, comparison selector selects the current breaker controller or angular position controller, so that the current breaker controller and the angular position controller can realise automatic switching and a smooth connection, regardless of changes in load in three phases, namely the phases of low speed of rotation, the average speed of rotation and high speed of rotation, and during acceleration, deceleration or uniform speed, wherein the switching from on angle to off angle will not cause torque fluctuation or rotation velocity of ac electronicreaction motor so that the system of ac electronicreaction motor works stably and has a high practical value in engineering.;EFFECT: providing automatic switching and smooth communication between two control modes with elimination of chatter when switching.;2 dwg