Device for controlling or regulating a salient-pole machine with the excitation current being controlled in advance (servo-controlled)

摘要

A stator current controller (4) follows up required values (nominal values, set values, desired values) (i@) which are specified for the stator current (i). An excitation (energising) current control element (reference element) (7) determines a fictional excitation current value (i@) from a required flux value ( psi *), a flux which is determined in a flux determination device (9) (direction psi L) and an inductance parameter (xq) associated with the main inductance, to which excitation current value (i@) a disturbance variable is connected in an excitation-current control element (7), which disturbance variable is composed of the direct-axis and quadrature-axis inductances (xd, dq) of the salient-pole machine and the direct-axis component ( psi d) of the flux which is determined in the flux determination device. The use of the disturbance variable provides the required value for the excitation current.