TRACKING CIRCUIT AND METHOD OF TRACKING ENGINE ROTOR ORIENTATION DURING LOSS OF POWER OF SOURCE TO ENGINE DRIVE Russian patent published in 2017 - IPC H02H7/09 H02J9/06 H02P6/00 H02P6/182 

FIELD: electricity.

SUBSTANCE: circuit comprises an electric power storage for generating a drive control signal during the periods of loss of power of a source and a phase locked loop that is configured to receive as inputs the drive control signal and an induced signal generated during rotor rotation during the periods of loss of power of the source so that changes in the drive control signal become synchronized with changes in the induced signal. The method comprises storing electrical power in the storage during the periods of supplying the source power to the motor drive and generating the drive control signal from the electric power storage during the periods of loss of power of the source to the motor drive. The method additionally comprises changing the drive control signal depending on the induced signal generated by rotation of the rotor during the loss of power of the source to the motor drive to track the orientation of the rotor.

EFFECT: restart of the motor after recovery of the power feed without preliminary stop of the engine.

12 cl, 3 dwg