Invention Grant
- Patent Title: Fault handling system for doubly fed induction generator
- Patent Title (中): 双馈感应发电机故障处理系统
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Application No.: US13869235Application Date: 2013-04-24
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Publication No.: US09461573B2Publication Date: 2016-10-04
- Inventor: Mohamed Shawki El Moursi , Weidong Xiao , Po-Hsu Huang
- Applicant: Masdar Institute Of Science And Technology
- Applicant Address: AE Abu Dhabi
- Assignee: Masdar Institute of Science and Technology
- Current Assignee: Masdar Institute of Science and Technology
- Current Assignee Address: AE Abu Dhabi
- Agency: Grossman Tucker Perreault & Pfleger, PLLC
- Main IPC: H02P9/10
- IPC: H02P9/10 ; F03D9/00 ; H02H9/00 ; H02P9/00

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.
Public/Granted literature
- US20140138949A1 FAULT HANDLING SYSTEM FOR DOUBLY FED INDUCTION GENERATOR Public/Granted day:2014-05-22
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