COUNTER ELECTROMOTIVE FORCE DETECTION CIRCUIT, AND APPARATUS FOR CONTROLLING DRIVE OF SENSORLESS BRUSHLESS DIRECT CURRENT MOTOR

摘要

The present invention relates to a counter electromotive force detection circuit, and an apparatus for controlling a drive of a sensorless brushless direct current motor, which mate a phase change time of a sensorless brushless direct current motor and a zero-crossing time of a counter electromotive force of a three-phase coil, and reduce a noise caused by a change of a switching device of an inverter.;COPYRIGHT KIPO 2016