Patent ID: 11942882
Assignee: STMICROELETRONICS (BEIJING) R&D CO., LTD.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H | IPC H

Claim 13:
14. The method of claim 13, wherein operating the control loop in the second closed-loop mode comprises:
estimating the angle between the rotor and the stator of the PMSM and using the estimated angle as the transformation angle of the Park transformation;
computing a fifth error signal by subtracting the first current component from a third reference current value, wherein the third reference current value is calculated by:
computing a difference between a target rotation speed of the rotor and an estimated rotation speed of the rotor; and
sending the difference to a proportional-integral (PI) circuit, wherein an output of the PI circuit is the third reference current value;

computing a sixth error signal by subtracting the second current component from the second reference current value having the second constant value; and
generating the driving voltages for the windings of the stator of the PMSM based on the fifth error signal and the sixth error signal.