METHOD FOR EFFECTING THE POWER-OPTIMAL CONTROL OF BLDC MOTORS

摘要

The invention relates to a method for effecting improved power control of brushless direct current motors: BLDC motors). The time difference between two successive zero crossings (TN1, TN2), reversal of direction of the induced voltage of a motor coil, through which voltage is not flowing, of two motor phases is measured. This time difference serves as a measure for the directly following commutation instant of the temporally following motor phase according to a simple algorithm. An influencing ensues in this manner before each switching into the subsequent state. The points in time of the respective zero crossings (TN1, TN2) are load-dependent, and a switching based on an algorithm matched thereto is thus able to immediately react even to erratic changes in load.