Patent ID: 9748877
Date: 2017-08-29
CPC Classifications: F02B,H02P

Claim:
1. A method for driving a motor, comprising: providing an align duty set circuit having an input and an output, the align duty set circuit comprising: determining a position of a first pole of a rotor of the motor relative to a position of a Hall sensor; receiving a first duty control signal or a second duty control signal in response to the position of the first pole of the rotor of the motor relative to the position of the Hall sensor, wherein the second duty control signal is an align duty set signal; and generating a drive signal having a duty in accordance with the first duty control signal or the align duty set signal, and wherein generating the drive signal includes: magnetizing the U-phase winding and the W-phase winding with a first magnetic polarity and the V-phase winding with a second magnetic polarity; and wherein the first pole of the rotor is of the first magnetic polarity.