Methods, controllers, and inverters for determining correction values that represent the angular difference between the estimated d-axis position and the actual position.

摘要

It is a method of determining the correction value for the control device (3) for the electric machine (5), and the correction value is the rotor position information (8) of the rotor position sensor (7) in the initial setting of the control device (3). ) Represents the angular difference between the estimated position of the d-axis of the electric machine (5) and the actual position of the d-axis, 0 current is applied to the stator winding of the electric machine, and the correction value is the electric machine ( 5) In the rotating state of the rotor, the d voltage value representing the d component of the stator voltage specified by the controller (3) in the initial setting and the q component of the stator voltage specified by the controller (3) in the initial setting. It is determined by a function of the q voltage value representing Method. [Selection diagram] Fig. 1