Brushless DC motor controlling device, has microcontroller including anti-overheating unit that adjusts currents transformed by predetermined co-ordinate transformation of line currents into predetermined function to limit line currents

摘要

The device has a current control value generator for generating current control values for a motor with a poly-phased winding. A detecting unit detects line currents circulating across the motor. A microcontroller (5) includes an anti-overheating unit (11) that adjusts currents transformed by a predetermined co-ordinate transformation of the line currents into a predetermined function to limit the line currents.