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1. (WO2018200511) ENERGY STORAGE SYSTEM FOR DOUBLY FED INDUCTION GENERATOR

Pub. No.:    WO/2018/200511    International Application No.:    PCT/US2018/029124
Publication Date: Fri Nov 02 00:59:59 CET 2018 International Filing Date: Wed Apr 25 01:59:59 CEST 2018
IPC: H02J 3/38
H02J 9/00
Applicants: GENERAL ELECTRIC COMPANY
Inventors: DHARMADHIKARI, Parag, Rameshchandra
ROESNER, Robert
Title: ENERGY STORAGE SYSTEM FOR DOUBLY FED INDUCTION GENERATOR
Abstract:
Systems and methods for operating an energy storage system in a doubly fed induction generator wind turbine system are provided. An energy storage system can include a transformer configured to transform AC power from a first voltage to AC power at a second voltage and a bi-directional AC to DC power converter coupled to the transformer. The bi¬ directional AC to DC power converter can be configured to convert the AC power at the second voltage to a DC power. The energy storage system can further include an energy storage device coupled to the bi-directional AC to DC power converter. The energy storage system can be configured to receive power generated by a rotor of the DFIG via an AC line bus. The energy storage device can be configured to store the power received by the energy storage system.