CONTROL STRATEGY FOR THE ROTOR SIDE CONVERTER OF A DFIG-WT UNDER BALANCED VOLTAGE SAG

被引：0

作者：

Lima, Kleber ^{[1
]}

Luna, Alvaro ^{[2
]}

Watanabe, Edson H. ^{[3
]}

Rodriguez, Pedro ^{[2
]}

机构：

[1] Univ Fed Ceara, Fortaleza, Ceara, Brazil

[2] Tech Unive Catalonia, Barcelona, Spain

[3] Univ Fed Rio de Janeiro, BR-21941 Rio De Janeiro, Brazil

来源：

2009 BRAZILIAN POWER ELECTRONICS CONFERENCE, VOLS 1 AND 2 | 2009年

关键词：

Wind generation; Direct Power Control; Field-oriented control; ride-through capability; FED INDUCTION GENERATOR; DIRECT TORQUE CONTROL; WIND TURBINES;

D O I：

暂无

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

This paper proposes a new control technique to improve the fault-ride through capability of doubly fed induction generators (DFIG). In such generators the appearance of severe voltage sags at the coupling point make rise to high over currents at the rotor/stator windings, something that makes necessary to protect the machine as well as the rotor side power converter. As a difference with the most extended solution, that reduces these currents by means of the connection of a crowbar circuit, this works intends to enhance the DFIGs response in such conditions without introducing extra hardware in the system. To this end, the proposed control system feedback the stator currents as the rotor current reference during the fault, until they are driven to their nominal values. The feasibility of this proposal has been proven by means of mathematical and simulation models, based on PSCAD/EMTDC, as well as experimental results from a prototype of 6kW rated power.

引用

页码：1051 / +

页数：2

共 20 条

[1] Two-level VSC based predictive direct torque control of the doubly fed induction machine with reduced torque and flux ripples at low constant switching frequency [J].