公开(公告)号：US20140138949A1

公开(公告)日：2014-05-22

申请号：US13869235

申请日：2013-04-24

Applicant: Masdar Institute Of Science and Technology

Inventor： Mohamed Shawki El Moursi ,  Weidong Xiao ,  Po-Hsu Huang

IPC: H02P9/10 ,  H02P9/00 ,  F03D9/00

CPC classification number: H02P9/10 ,  F03D9/257 ,  H02P9/007 ,  H02P29/032 ,  Y02E10/725

Abstract: Fault Ride Through (FRT) transient management system configured to enhance the FRT capability doubly-fed induction generator (DFIG)-based wind turbines. A grid side converter (GSC) introduces shunt and series compensation for normal operation and voltage dips, respectively. A braking resistor may be added to smooth switching transients from shunt to series interfaces and dissipate excessive power from the GSC. To attain a flexible control solution for balanced and unbalanced fault conditions, the transient management scheme may employ positive and negative sequence controllers. The system dynamics for the series compensation topology may be analyzed using small-signal linear model. Based on the mathematical model, the controller may be tuned to balance voltage regulation performance and transient stability margins with consideration of various operating conditions. The system benefits from a low component count, simple protection structure, and improved FRT performance with effective compensation to the electric grid.

Abstract translation: 故障穿越（FRT）瞬态管理系统配置为增强FRT能力双馈感应发电机（DFIG）的风力发电机。 电网侧转换器（GSC）分别为正常工作和电压骤降分别引入分流和串联补偿。 可以添加制动电阻，以平滑从分流到串联接口的切换瞬变，并消除GSC的过大功率。 为了实现平衡和不平衡故障条件的灵活控制解决方案，瞬态管理方案可以采用正序和负序控制器。 可以使用小信号线性模型分析串联补偿拓扑的系统动力学。 基于数学模型，可以考虑各种操作条件来调节控制器以平衡电压调节性能和瞬态稳定裕度。 该系统受益于组件数量少，保护结构简单，FRT性能得到改进，对电网进行了有效的补偿。

公开(公告)号：US09461573B2

公开(公告)日：2016-10-04

申请号：US13869235

申请日：2013-04-24

Applicant: Masdar Institute Of Science And Technology

Inventor： Mohamed Shawki El Moursi ,  Weidong Xiao ,  Po-Hsu Huang

IPC: H02P9/10 ,  F03D9/00 ,  H02H9/00 ,  H02P9/00

CPC classification number: H02P9/10 ,  F03D9/257 ,  H02P9/007 ,  H02P29/032 ,  Y02E10/725

Abstract: Fault Ride Through (FRT) transient management system configured to enhance the FRT capability doubly-fed induction generator (DFIG)-based wind turbines. A grid side converter (GSC) introduces shunt and series compensation for normal operation and voltage dips, respectively. A braking resistor may be added to smooth switching transients from shunt to series interfaces and dissipate excessive power from the GSC. To attain a flexible control solution for balanced and unbalanced fault conditions, the transient management scheme may employ positive and negative sequence controllers. The system dynamics for the series compensation topology may be analyzed using small-signal linear model. Based on the mathematical model, the controller may be tuned to balance voltage regulation performance and transient stability margins with consideration of various operating conditions. The system benefits from a low component count, simple protection structure, and improved FRT performance with effective compensation to the electric grid.

Abstract translation: 故障穿越（FRT）瞬态管理系统配置为增强FRT能力双馈感应发电机（DFIG）的风力发电机。 电网侧转换器（GSC）分别为正常工作和电压骤降分别引入分流和串联补偿。 可以添加制动电阻，以平滑从分流到串联接口的切换瞬变，并消除GSC的过大功率。 为了实现平衡和不平衡故障条件的灵活控制解决方案，瞬态管理方案可以采用正序和负序控制器。 可以使用小信号线性模型分析串联补偿拓扑的系统动力学。 基于数学模型，可以考虑各种操作条件来调节控制器以平衡电压调节性能和瞬态稳定裕度。 该系统受益于组件数量少，保护结构简单，FRT性能得到改进，对电网进行了有效的补偿。