Abstract
Brushless Doubly-Fed Induction Generator (BDFIG) is potential for power generation applications for its high reliability and low maintenance cost. Realization of Vector Control (VC) for stand-alone Doubly Fed Induction Generator (BDFIG) system requires the exact synchronous rotating d-q transformations. However, such a d-q transformation is complicated since a BDFIG contains two stator windings and one rotor winding. In this paper, a d-q transformation with self-correction is proposed to eliminate the detection of the rotor position and the stator displacement angle. The voltage regulation is realized in the d axis via a dual-loop control; while the self-correction is realized in the q axis via the other dual-loop control. With the self-correction, the exact d and q components can be obtained and the high performance VC can be ensured. Simulation and experimental results are carried out to verify the control strategy.
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