Patent ID: 8773055
Filing Date: 2014-07-08
Classification: H02P

Abstract:
1. An electronically commutated one-phase motor ( 20 ) comprising: a stator having a permanent-magnet rotor ( at least one of the two winding strands having a first end and a second end, the first end being connected to a supply lead ( wherein the at least one permanent-magnet rotor ( an electronic calculation device ( a) measuring an analog instantaneous operating voltage (Ub) of the motor and deriving therefrom a digital voltage value characterizing said instantaneous operating voltage; b) specifying a time duration (T c) switching space on said third semiconductor switch ( d) after said time duration (T e) monitoring as to whether or not an induced voltage occurs after the end of the loop current (I*); f) if no induced voltage is detected, extending the time duration (T g) if an induced voltage does occur after the end of the loop current (I*), making a check as to whether said voltage is occurring at the predetermined winding strand ( h) if No, shortening the time duration (T I) if Yes, executing a transition to normal commutation of the motor (