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1. (WO2018128819) POWER CONVERTER FOR DOUBLY FED INDUCTION GENERATOR WIND TURBINE SYSTEMS

Pub. No.:    WO/2018/128819    International Application No.:    PCT/US2017/067628
Publication Date: Fri Jul 13 01:59:59 CEST 2018 International Filing Date: Thu Dec 21 00:59:59 CET 2017
IPC: H02M 5/458
H02J 3/38
H02K 17/12
Applicants: GENERAL ELECTRIC COMPANY
Inventors: WAGONER, Robert, Gregory
GANIREDDY, Govardhan
SHUKLA, Saurabh
BURRA, Rajni, Kant
RAJU, Ravisekhar, Nadimpalli
ZHOU, Rui
DATTA, Rajib
BOLLENBECKER, John, Leo
Title: POWER CONVERTER FOR DOUBLY FED INDUCTION GENERATOR WIND TURBINE SYSTEMS
Abstract:
Power converters for use in wind turbine systems are included. For instance, a wind turbine system, can include a wind driven doubly fed induction generator having a stator and rotor. The stator is configured to provide a medium voltage alternating current power on a siator bus of the wind turbine system. The wind turbine system includes a power converter configured to convert a low voltage alternating current power provided by the rotor to a medium voltage multiphase alternating current output power suitable for provision to an electrical grid. The power converter includes a plurality conversion modules. Each conversion module includes a plurality of bridge circuits. Each bridge circuit includes a plurality of silicon carbide switching devices coupled in series. Each conversion module is configured to provide a single phase of the medium voltage multiphase alternating current output power on a line bus of the wind turbine system.