scholarly journals Stator current vector control strategy of doubly fed induction generator using proportional–resonant regulators

2017 ◽  
Vol 2017 (13) ◽  
pp. 1728-1733 ◽  
Author(s):  
Qing Li ◽  
Peng Cheng ◽  
Xiangjun Hao ◽  
Jinping Zhang
Keyword(s):  
Vector Control ◽  
Control Strategy ◽  
Induction Generator ◽  
Doubly Fed Induction Generator ◽  
Stator Current ◽  
Current Vector ◽  
Doubly Fed ◽  
Vector Control Strategy

Research on Rotor over-Current of a Doubly-Fed Induction Generator under Power Grid Fault

2013 ◽  
Vol 805-806 ◽  
pp. 397-401
Author(s):  
Zhuo Chen ◽  
Zheng Hang Hao
Keyword(s):  
Control Strategy ◽  
Power Grid ◽  
Power Converter ◽  
Induction Generator ◽  
Doubly Fed Induction Generator ◽  
Prior Art ◽  
Control Scheme ◽  
Additional Protection ◽  
Doubly Fed ◽  
Vector Control Strategy

This paper showed that the doubly-fed induction generator (DFIG) was sensitive to the faults of power grid. Through theoretic analysis for active power characteristic of DFIG, it was recognized that the conventional PI-based vector control strategy was likely to cause the excitation system overregulated due to lack of additional protection technique. On this condition, a DFIG risks damaged to its power converter due to overcurrent or overvoltage. At the basis of prior art, this paper developed a novel control scheme, which focused on solving overregulated problems caused by faults of power grid. The proposed control strategy was tested on an illustration DFIG-based power system modeled by MATLAB/SIMULINK. The results demonstrate that the proposed control scheme can effectively resist overcurrent under the conditions of both symmetrical and unsymmetrical grid faults.

scholarly journals Dynamic Modeling and Control of BDFRG under Unbalanced Grid Conditions

Energies ◽  
2021 ◽  
Vol 14 (14) ◽  
pp. 4297
Author(s):  
Taufik Taluo ◽  
Leposava Ristić ◽  
Milutin Jovanović
Keyword(s):  
Vector Control ◽  
Control Strategy ◽  
Reactive Power ◽  
High Reliability ◽  
Current Control ◽  
Induction Generator ◽  
Doubly Fed Induction Generator ◽  
Secondary Currents ◽  
Doubly Fed ◽  
Unbalanced Grid

The Brushless Doubly-Fed Reluctance Generator (BDFRG) is a potential alternative to the Doubly Fed Induction Generator (DFIG) in wind power applications owing to its reasonable cost, competitive performance, and high reliability. In comparison with the Brushless Doubly-Fed Induction Generator (BDFIG), the BDFRG is more efficient and easier to control owing to the cage-less rotor. One of the most preferable advantages of BDFRG over DFIG is the inherently better performance under unbalanced grid conditions. The study conducted in this paper showed that conventional vector control of the BDFRG results in excessive oscillations of the primary active/reactive power, electromagnetic torque, and primary/secondary currents in this case. In order to address such limitations, this paper presented a new control strategy for the unbalanced operation of BDFRG-based wind generation systems. A modified vector control scheme was proposed with the capability to control the positive and the negative sequences of the secondary currents independently, thus greatly reducing the adverse implications of the unbalanced supply. The controller performance has been validated by simulations using a 1.5 MW BDFRG dynamical model built upon the positive and negative sequence equations. The main benefits of the new control strategy are quantified in comparison with conventional PI current control design.

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