公开(公告)号：US11368023B2

公开(公告)日：2022-06-21

申请号：US16982849

申请日：2018-03-22

Applicant: General Electric Company ,  Igor Berroteran ,  Shouzhong Chang

Inventor： Igor Berroteran ,  Shouzhong Chang

IPC: H02J3/38 ,  F03D9/00

Abstract: A method for operating a PV system that is integrated into a power system connected to a power grid includes determining a voltage operating point for the PV system based on a maximum power point tracking (MPPT) algorithm. If an available power output of the PV system can be provided to the power grid, the method includes operating the PV system based on the voltage operating point. If the maximum available power output of the PV system cannot be provided to the power grid, the method includes applying a voltage step to the voltage operating point to drive a power output of the PV system towards an external power constraint.

公开(公告)号：US20210057915A1

公开(公告)日：2021-02-25

申请号：US16982849

申请日：2018-03-22

Applicant: Igor BERROTERAN ,  Shouzhong CHANG ,  General Electric Company

Inventor： Igor Berroteran ,  Shouzhong Chang

IPC: H02J3/38 ,  F03D9/00

Abstract: A method for operating a PV system that is integrated into a power system connected to a power grid includes determining a voltage operating point for the PV system based on a maximum power point tracking (MPPT) algorithm. If an available power output of the PV system can be provided to the power grid, the method includes operating the PV system based on the voltage operating point. If the maximum available power output of the PV system cannot be provided to the power grid, the method includes applying a voltage step to the voltage operating point to drive a power output of the PV system towards an external power constraint.

公开(公告)号：US09941687B2

公开(公告)日：2018-04-10

申请号：US14892077

申请日：2013-06-04

Applicant: General Electric Company

Inventor： Huibin Zhu ,  Xueqin Wu ,  Shouzhong Chang ,  Jie Ding

IPC: F03D9/00 ,  H02H7/06 ,  F03D7/02 ,  H02P9/00 ,  H02P9/10 ,  H02J3/38 ,  F03D1/06 ,  F03D7/04 ,  F03D9/25

CPC classification number: H02H7/067 ,  F03D1/0675 ,  F03D7/0224 ,  F03D7/0244 ,  F03D7/0272 ,  F03D7/0284 ,  F03D7/042 ,  F03D9/255 ,  F03D9/257 ,  F05B2260/903 ,  H02J3/386 ,  H02P9/007 ,  H02P9/10 ,  Y02E10/721 ,  Y02E10/723 ,  Y02E10/725 ,  Y02E10/763

Abstract: Methods for operating a wind turbine system are provided. In one embodiment, a method includes adjusting a threshold direct current (DC) bus voltage for a dynamic brake in a wind turbine power converter above a reference DC bus voltage based on at least one system condition. The method further includes gating the dynamic brake on when an experienced DC bus voltage is equal to or greater than the threshold DC bus voltage, and inputting a dynamic brake condition into a controller when the dynamic brake is gated on. The method further includes determining if a grid fault has occurred, reducing power generation of the wind turbine if no grid fault has occurred, and blocking the power converter if a grid fault has occurred. The method further includes gating the dynamic brake off when the experienced DC bus voltage is less than the threshold DC bus voltage.

公开(公告)号：US20160118786A1

公开(公告)日：2016-04-28

申请号：US14892077

申请日：2013-06-04

Applicant: General Electric Company

Inventor： Huibin Zhu ,  Xueqin Wu ,  Shouzhong Chang ,  Jie Ding

IPC: H02H7/06 ,  H02P9/00 ,  F03D7/04 ,  F03D9/00 ,  F03D1/06 ,  F03D7/02

CPC classification number: H02H7/067 ,  F03D1/0675 ,  F03D7/0224 ,  F03D7/0244 ,  F03D7/0272 ,  F03D7/0284 ,  F03D7/042 ,  F03D9/255 ,  F03D9/257 ,  F05B2260/903 ,  H02J3/386 ,  H02P9/007 ,  H02P9/10 ,  Y02E10/721 ,  Y02E10/723 ,  Y02E10/725 ,  Y02E10/763

Abstract: Methods for operating a wind turbine system are provided. In one embodiment, a method includes adjusting a threshold direct current (DC) bus voltage for a dynamic brake in a wind turbine power converter above a reference DC bus voltage based on at least one system condition. The method further includes gating the dynamic brake on when an experienced DC bus voltage is equal to or greater than the threshold DC bus voltage, and inputting a dynamic brake condition into a controller when the dynamic brake is gated on. The method further includes determining if a grid fault has occurred, reducing power generation of the wind turbine if no grid fault has occurred, and blocking the power converter if a grid fault has occurred. The method further includes gating the dynamic brake off when the experienced DC bus voltage is less than the threshold DC bus voltage.

Abstract translation: 提供了用于操作风力涡轮机系统的方法。 在一个实施例中，一种方法包括基于至少一个系统状况，将风力涡轮机功率转换器中的动态制动器的阈值直流（DC）母线电压调整到基准直流母线电压以上。 该方法还包括当有经验的直流母线电压等于或大于阈值直流母线电压时门控动态制动，以及当动态制动器选通时将动态制动条件输入到控制器中。 该方法还包括确定是否发生电网故障，如果没有发生电网故障，则减少风力涡轮机的发电，并且如果发生电网故障则阻塞电力转换器。 该方法还包括当有经验的直流母线电压小于阈值直流母线电压时选通动态制动器。