Inderscience Publishers

STATCOM based voltage-frequency regulation for SEIG driven by an uncontrolled speed turbine

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This article presents the analysis and the control of a stand-alone self excited induction generator (SEIG) intended for rural applications. SEIG along with the STATCOM with battery energy storage (BES) in its DC side makes it possible to control the terminal voltage and frequency during rotor speed and load variation. Constant frequency control is carried out by the load angle 'δ', without rotor speed control, while constant terminal voltage control is achieved via the modulation index 'm'. The 'SEIG' magnetisation characteristic and the 'STATCOM' rating are taken into consideration to determine the load interval where the terminal voltage and frequency can be controlled. The simulation results show good performances of the SEIG-STATCOM system under different perturbations.

Keywords: self-excited induction generator, SEIG, voltage control, frequency control, static synchronous compensator, STATCOM, battery energy storage systems, BESS, uncontrolled speed turbines, rural applications

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