Method for controlling commutation in an electronically commutated motor uses a limiter to limit current at a variable default value in one phase and a control task by altering a time gap between switching current on and off in one phase.

摘要

An electronically commutated motor (20) has a stator with phases (24,26), a permanent magnet rotor (22), a current limiter (36,58) and a controller to control a motor variable. The current limiter limits current (I) at a variable default value in one phase. Control through the controller operates by altering a time gap between switching a current on and off in one phase. An Independent claim is also included for an electronically commutated motor for operating the method of the present invention.