METHOD AND CIRCUIT ARRANGEMENT FOR CHECKING THE ROTOR POSITION OF A SYNCHRONOUS MACHINE

摘要

Method and circuit arrangement in which the position of the rotor of an electronically commutated synchronous machine relative to one or more, in particular three, rotor position sensors which are fixed to the stator is determined, wherein, after a first rotor position determination process, the load-free rotor is rotated through a predefined angle by applying a suitable voltage vector, after which another rotor position determination process is carried out and the result of the second rotor position determination process is compared with an expected rotor position.