公开(公告)号：WO2019094179A1

公开(公告)日：2019-05-16

申请号：PCT/US2018/056850

申请日：2018-10-22

Applicant: GENERAL ELECTRIC COMPANY

Inventor： KOLHATKAR, Yashomani Y. ,  TIWARI, Arvind Kumar

IPC: H02P9/00

CPC classification number: H02P9/007 ,  H02P9/00

Abstract: A power generation system (100, 300, 400) is presented. The power generation system (100, 300, 400) includes a doubly-fed induction generator (DFIG) (106), a point of common coupling (PCC) (116) electrically coupled to a stator winding (130) of the DFIG (106), a rotor-side converter (108) electrically connected to a rotor winding (132) of the DFIG (106), and a line-side converter (110) electrically connected to the PCC (116). The line-side converter (110) is also electrically connected to the rotor-side converter (108) via a direct-current (DC) link (114). The DC-link (114) includes a plurality of electrical conductors (208, 210, 212), where one electrical conductor of the plurality of electrical conductors (208, 210, 212) is connected to a first ground terminal (140). Moreover, the power generation system (100, 300, 400) includes a power source (112) electrically coupled to the DC-link (114).

公开(公告)号：WO2019195503A1

公开(公告)日：2019-10-10

申请号：PCT/US2019/025711

申请日：2019-04-04

Applicant: GENERAL ELECTRIC COMPANY

Inventor： GANIREDDY, Govardhan ,  SCHNETZKA, Harold Robert ,  WAGONER, Robert Gregory ,  RIDENOUR, Amy Marlene ,  JHA, Kapil ,  KOLHATKAR, Yashomani Y. ,  TIWARI, Arvind Kumar

IPC: H02M1/12 ,  H02M5/458 ,  H02M7/23 ,  H02M7/493 ,  H02M7/5387 ,  H02M1/00 ,  H02M7/219

Abstract: Systems and methods for operating a power system having a doubly fed induction generator are provided. In example implementations, an electrical power system (100) connected to a power grid (190) can include a generator (120) comprising a stator and a rotor, the stator connected to the power grid via a stator power path, and a power converter (130). The power converter (130) can include a line-side converter (134) coupled to the power grid (190) via a converter power path and a rotor-side converter (132) coupled to a rotor bus (124) of the rotor and the line-side converter (134) via a DC link, the rotor-side converter (132) configured to convert a DC power on the DC link to an AC signal for the rotor bus (124). The power system (100) can also include an active filter (250) comprising one or more active controlled components, the active filter (250) being coupled in parallel with the rotor-side converter (132) to reduce harmonics of the electrical power system (100).

公开(公告)号：WO2019103837A1

公开(公告)日：2019-05-31

申请号：PCT/US2018/059343

申请日：2018-11-06

Applicant: GENERAL ELECTRIC COMPANY

Inventor： TIWARI, Arvind Kumar ,  KOLHATKAR, Yashomani Y.

IPC: H02J3/38 ,  H02J3/08 ,  H02P9/00

Abstract: A power generation system (100, 300) is presented. The power generation system (100, 300) includes a reference direct current (DC) bus (104) and a plurality of doubly-fed induction generator (DFIG) based power generation sub-systems (102-1, 102-2) electrically coupled in parallel with each other via the reference DC-bus (104). Each of the plurality of DFIG based power generation sub-systems (102-1, 102-2) includes a DFIG (204), a rotor-side converter (206) and a line-side converter (208) coupled to the DFIG (204). The line-side converter (208) and the rotor-side converter (206) are electrically coupled to each other via a local DC-bus (116-1, 116-2). The local DC-bus (116-1, 116-2) of each of the plurality of DFIG based power generation sub-systems (102-1, 102-2) is coupled to the reference DC-bus (104). Moreover, the power generation system (100, 300) includes an auxiliary power source (108) and an energy storage device (110) electrically coupled to the reference DC-bus (104).