POSITIONAL RECOGNITION USING BEMF ZERO CROSSOVER OF ROTOR OF ELECTRONICALLY COMMUTED ELECTRICAL MACHINE WITH TWO COIL SECTIONS OF DIFFERENT INDUCTANCES

摘要

ABSTRACT POSITIONAL RECOGNITION USING BEMF ZERO CROSSOVER OF ROTOR OF ELECTRONICALLY COMMUTATED ELECTRICAL MACHINE WITH TWO COIL SECTIONS OF DIFFERENT INDUCTANCES The present subject matter relates to a method for positional recognition of a rotor of an electronically commutated electric machine, in particular of an electric motor. The method includes using a zero crossover of a voltage induced in a coil section of the rotor or stator for positional recognition, and powering down the coil section briefly to determine the zero crossover. According to the present subject matter, the method includes using a rotor/stator, includes at least two coil sections, where one of the at least two coil sections has a lower inductance relative to the other coil section. The method includes preferably using only the coil section with the lower inductance for the positional recognition.