The invention relates to the technical field of
motor control, and discloses a three-phase asynchronous motor operation control management method and
system, and the method comprises the following steps: 1, obtaining the
pulse number per revolution of an
encoder, the rated rotating speed of a motor
nameplate, the
acceleration time, the sliding stalling time, a thermal permission threshold, a
load shedding threshold, a jump gate threshold, the upper limit of a start-stop token, and an expected rotation direction; determining the maximum allowable
acceleration time and the minimum cooling locking time; 2, starting access judgment is carried out according to the three-phase existence state, the under-
voltage state and the
time condition; 3, pulse accumulation and rotation direction comparison are executed to generate a start judgment result, and the number of start-stop tokens is deducted; 4, calculating a
thermal index based on temperature detection during operation, comparing the
thermal index with each threshold, and outputting an operation continuing,
load shedding or shutdown instruction; and 5, updating the
thermal index, and outputting an unlocking result when an unlocking condition is met. According to the invention, safe management of the whole process of starting determination, operation regulation and control and shutdown unlocking of the three-phase asynchronous motor is realized.