Patent ID: 6603279
Filing Date: 2003-08-05
Classification: H02H,H02P

Abstract:
A method for operating an electronically commutated electric motor (2), comprising:generating a standard value signal for a commutation position of a rotor of the electric motor (2); supplying current to windings of the electric motor (2) such that the rotor of the electric motor (2) is positioned on the commutation position specified by the standard value signal; generating a position measuring signal for a position of the rotor of the electric motor (2) and comparing the position measuring signal with the standard value signal for the commutation position; and interrupting the current supplied to the windings of the electric motor (2) when at least one of the position measuring signal and the standard value signal for the commutation position exceed a specified maximum value, or if a differential between the position measuring signal and the standard value signal for the commutation position lies outside a specified tolerance range, or if at least one of the position measuring signal and the standard value signal for the commutation position exceed the specified maximum value, and the differential between the position measuring signal and the standard value signal for the commutation position lies outside the specified tolerance range.