Stability of Voltage Vector Control Systems Based on Induction Generators

The paper presents an analysis of the stability properties typical structures induction generators-based vector control systems with linear proportional-integral currents and DC-link voltage controllers. study is based on mathematical model machine taking into account magnetization curve. It provides modification voltage-flux algorithm by considering saturation magnetic system. proof problem generator-based generation system that its nonlinear nonminimal-phase, dynamics even for a constant flux linkage speed due to presence components which are proportional active losses. conditions provide consideration reduced-order formulated local asymptotic algorithms proven singular perturbation theory. shown ensured when regulation processes torque-forming stator current component decoupled, achieved proposed special adjustment A modified generator studied in simulation experimentally. At first stage, investigated subsystem equilibrium point. As result, possibility design was confirmed. second dynamic behavior loop different settings controllers experimentally investigated. configuration work timescale separation processes, as well their quasi-decoupling.