Title :
Self-Tuning Resonant Control of a Seven-Leg Back-to-Back Converter for Interfacing Variable-Speed Generators to Four-Wire Loads
Author :
Cardenas, Roberto ; Espina, Enrique ; Clare, Jon ; Wheeler, Patrick
Author_Institution :
Dept. of Electr. Eng., Univ. of Chile, Santiago, Chile
Abstract :
This paper considers the control of a seven-leg back-to-back voltage source inverter arrangement, feeding a four-wire load from a three-phase permanent-magnet synchronous generator (PMSG) operating at variable speed. The PMSG is controlled using a sensorless model reference adaptive system to obtain the rotor position angle. The seven-leg converter is regulated using resonant controllers at the load side and self-tuning resonant controllers at the generator side. The control system is augmented by a feedforward compensation algorithm that improves the dynamic performance during transients. Experimental results, which are obtained from a prototype, are presented and discussed.
Keywords :
adaptive control; feedforward; invertors; permanent magnet generators; power convertors; rotors; self-adjusting systems; sensorless machine control; synchronous generators; PMSG; feedforward compensation algorithm; four-wire loads; permanent-magnet synchronous generator; rotor position angle; self-tuning resonant control; sensorless model; seven-leg back-to-back converter; seven-leg back-to-back voltage source inverter; variable-speed generators; Generators; Observers; Resonant frequency; Stators; Vectors; Velocity control; AC-AC Power Convertion; AC???AC power conversion; Converters; Power generation control; Variable speed generation; converters; power generation control; variable-speed generation;
Journal_Title :
Industrial Electronics, IEEE Transactions on
DOI :
10.1109/TIE.2015.2409803