公开(公告)号：US09166500B2

公开(公告)日：2015-10-20

申请号：US14222898

申请日：2014-03-24

Applicant: General Electric Company

Inventor： Xinhui Wu ,  Jiao Liu ,  Dan Hou ,  Xueqin Wu ,  Zhuohui Tan

IPC: H02M7/537 ,  H02M7/48 ,  H02J3/38 ,  H02J3/48 ,  H02J3/50

CPC classification number: H02M7/537 ,  H02J3/383 ,  H02J3/48 ,  H02J3/50 ,  H02M7/48 ,  Y02E10/563

Abstract: A power conversion system is disclosed including a DC bus for receiving DC power, a power converter for converting the DC power to AC power, and a controller. The controller includes an active power regulator for generating a phase angle command signal, a reactive power regulator for generating a voltage magnitude command, and an active power (P) and reactive power (Q) decoupling unit for decoupling interaction between the active and reactive power regulators. The PQ decoupling unit includes an active power compensation element and a reactive power compensation element. The active power compensation element is used for generating a phase angle compensation signal based on a reactive power error signal, to compensate the phase angle command signal. The reactive power compensation element is used for generating a voltage magnitude compensation signal based on an active power error signal, to compensate the voltage magnitude command signal.

Abstract translation: 公开了一种电力转换系统，包括用于接收DC电力的DC总线，用于将DC电力转换为AC电力的功率转换器以及控制器。 该控制器包括用于产生相位角命令信号的有功功率调节器，用于产生电压幅度指令的无功功率调节器以及用于去耦有功和无功功率之间的相互作用的有功功率（P）和无功功率（Q）去耦单元 监管者。 PQ解耦单元包括有功功率补偿元件和无功功率补偿元件。 有源功率补偿元件用于基于无功功率误差信号产生相位角补偿信号，以补偿相位角指令信号。 无功功率补偿元件用于基于有功功率误差信号产生电压幅度补偿信号，以补偿电压幅度指令信号。

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。