Stator-field-oriented vectorial control for VSI-fed wound-excited synchronous motor

Abstract

The paper deals with resultant stator-field vector control for a voltage-source inverter fed wound-excited salientpole synchronous motor with damper bars. Two control strategies are presented: one for the constant, uncontrolled excitation and the other for controlled exciting current. The first method ensures the control of the stator-field oriented longitudinal armature reaction, which determines the character (inductive or capacitive) of the stator current. The second method with variable exciting current works with imposed power factor, controlled angular speed and controlled stator flux. Simulation (using Matlab/Simulink environment) and implementations (on an experimental rig based on a dSPACE DS1104 controller card) were carried out.

Observer-based Linear Control of Synchronous Machine with Damper and Excitation Winding

“…Due to this, instead of rotor flux orientation, stator flux orientation control system is obtained [3][4][5][6][7]. However, [3][4][5][6][7] lack in stability proof of the controller. Whether DTC [8] or vector control principles are used, three control inputs are always in use and damper winding current dynamics are always neglected.…”

Nonlinear Observer-based Control of Synchronous Machine Drive System

“…There are few ideas on how to solve this problem. One involves coordinate transformation [3,4]. Unfortunately, a control system with many calculations (coordinate transformations, PI controllers, and other) has to be used.…”

Active flux based motion-sensorless vector control of DC-excited synchronous machines

“…Interest in the vector control of dc-excited SM drives was reviewed recently [5] for automotive applications at low-medium power level, together with direct torque and flux control [6][7]. The main reason is, again, large constant power speed range for minimum inverter peak kVA [8][9].…”