A Novel Power-Angle Control Method of DFIG-DC System Based on Regulating Air Gap Flux Vector

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A Novel Power-Angle Control Method of DFIG-DC System Based on Regulating Air Gap Flux Vector

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Wu, Chao / Zhou, Dao / Cheng, Peng / Blaabjerg, Frede

This article presents a novel power-angle control method of the doubly fed induction generator dc system based on regulating the air gap flux vector. The relationship between the angle of air gap electromotive force (EMF) vector and the stator output power is revealed in this article, which can be used for controlling the output power directly. Since the stator frequency is determined by the rotating speed of air gap flux vector and the output power is determined by the angle of air gap EMF vector, the stator frequency can be generated by the power control loop that can avoid the classical voltage model or current model and reduce the parameter dependence. The stator frequency can be regulated through the d-axis rotor current since the product of the stator frequency and the d-axis rotor current is constant. Furthermore, the improved direct resonant control for torque ripple and harmonic current mitigation can still be applied in this novel control method because air gap flux orientation is achieved through controlling the q-axis air gap flux to be zero. Finally, the experimental results are presented to validate the proposed control method.

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Title :

A Novel Power-Angle Control Method of DFIG-DC System Based on Regulating Air Gap Flux Vector

Contributors:

Wu, Chao (author) / Zhou, Dao (author) / Cheng, Peng (author) / Blaabjerg, Frede (author)

Publication date :

2021-01-01

Remarks:

Wu , C , Zhou , D , Cheng , P & Blaabjerg , F 2021 , ' A Novel Power-Angle Control Method of DFIG-DC System Based on Regulating Air Gap Flux Vector ' , I E E E Transactions on Power Electronics , vol. 36 , no. 1 , 9115817 , pp. 513-521 . https://doi.org/10.1109/TPEL.2020.3001967

DOI :

https://doi.org/10.1109/TPEL.2020.3001967

Type of media :

Article (Journal)

Type of material :

Electronic Resource

Language :

English

Keywords :

Air gap flux vector , direct resonant control , doubly fed induction generator (DFIG) , power-angle control

Classification :

DDC: