公开(公告)号：US09680344B2

公开(公告)日：2017-06-13

申请号：US14940498

申请日：2015-11-13

Applicant: General Electric Company

Inventor： Ashraf Said Atalla ,  Manoj Ramprasad Shah ,  Satish Prabhakaran ,  James Pellegrino Alexander

IPC: H02K17/12 ,  H02K3/28 ,  H02K11/04 ,  H02K11/00 ,  H02P27/04

CPC classification number: H02K3/28 ,  H02K11/0094 ,  H02K11/04 ,  H02K11/20 ,  H02K11/25 ,  H02K19/10 ,  H02K19/34 ,  H02K2213/09 ,  H02P25/18 ,  H02P25/22 ,  H02P27/04

Abstract: An electrical machine is provided. The electrical machine includes a stator, a rotor, and a plurality of switches. The stator includes main windings and auxiliary windings. The rotor is couplable to a prime mover configured to turn the rotor relative to the stator to generate at least six phases of alternating current (AC) power at the main windings. The plurality of switches is respectively coupled between the auxiliary windings and groups of the main windings. The plurality of switches is configured to convert the at least six phases to three phases when the plurality of switches is closed.

公开(公告)号：US20170110969A1

公开(公告)日：2017-04-20

申请号：US14885675

申请日：2015-10-16

Applicant: General Electric Company

Inventor： Rui Zhou ,  Luis Jose Garces ,  Ravisekhar Nadimpalli Raju ,  Ashraf Said Atalla

IPC: H02M3/335

CPC classification number: H02M3/33507 ,  H02J3/382 ,  H02J3/385 ,  H02M3/33569 ,  H02M3/337 ,  H02M2001/0058 ,  H02M2001/0074 ,  H02M2001/0077 ,  Y02B70/1491 ,  Y02E10/58

Abstract: A medium voltage direct current (MVDC) collector system for renewable power generation facilities includes at least one renewable energy generation device. The MVDC collector system also includes at least one direct current (DC)-to-DC (DC/DC) power converter coupled to the at least one renewable energy generation device. The at least one DC/DC power converter is configured to shift a switching operation of the DC/DC power converter between full-wave conversion and half-wave conversion. The MVDC collector system further includes at least one controller coupled to the at least one DC/DC power converter. The at least one controller is configured to regulate shifting the switching operation of the at least one DC/DC power converter between full-wave conversion and half-wave conversion.