Title :
Unbalanced voltage drops compensations using flywheel energy storage system
Author :
Al-Diab, Ahmad ; Sourkounis, Constantinos
Author_Institution :
Res. Group for Power Syst. Technol., Ruhr-Univ. Bochum, Bochum, Germany
Abstract :
A novel flywheel energy storage system is proposed in this study. The energy storage system consists of a flywheel coupled to permanent magnets synchronous machine. The stored energy is used for an unbalanced drop correction for the critical load using Three-Leg Four-Wire Converter. In motoring mode (no drop on the grid), the grid connected converter lets the system deliver power and boosts the DC link voltage until the flywheel reaches the maximum speed. In generating mode, the grid connected converter supplies sinusoidal voltage to the grid. The permanent magnets synchronous machine is selected for the design of a three-phase machine for the flywheel energy storage system and space vector modulation is used for controlling both converters.
Keywords :
flywheels; machine control; permanent magnet machines; power convertors; power grids; synchronous machines; DC link voltage; flywheel energy storage system; generating mode; grid connected converter; motoring mode; permanent magnet synchronous machine; sinusoidal voltage supply; space vector modulation; three-leg four-wire converter; three-phase machine; unbalanced drop correction; unbalanced voltage drop compensation; Flywheels; Load modeling; Mathematical model; Permanent magnet machines; Vectors; Voltage control; Flywheel Energy Storage System (FESS); Permanent Magnets Synchronous Machine (PMSM); Point of Common Coupling (PCC); Voltage Drop;
Conference_Titel :
Electrical Power Quality and Utilisation (EPQU), 2011 11th International Conference on
Conference_Location :
Lisbon
Print_ISBN :
978-1-4673-0379-8
DOI :
10.1109/EPQU.2011.6128849
