Comparative Study and Optimal Design of Subsynchronous Damping Controller in Doubly Fed Induction Generator
| Autor: | Song Xiang, Peng Su, Xiaodan Wu, Hanlu Yang, Chaoqun Wang |
|---|---|
| Rok vydání: | 2022 |
| Předmět: |
Renewable Energy
Sustainability and the Environment Geography Planning and Development subsynchronous oscillation subsynchronous damping controller subsynchronous oscillation mitigation doubly fed induction generator (DFIG) SSO parameter identification Building and Construction Management Monitoring Policy and Law |
| Zdroj: | Sustainability; Volume 14; Issue 20; Pages: 13095 |
| ISSN: | 2071-1050 |
| Popis: | The subsynchronous damping controller (SSDC) has been widely recognized for its excellent performance and low cost in subsynchronous oscillation (SSO) mitigation for the doubly fed induction generator (DFIG)-based wind power system. However, the existing SSDCs are various and lack a systematic comparison. To fill this gap, the structures and parameter design methods of common SSDCs are sorted and compared in this paper. It is found that the rotor-current-based method performs best in terms of dynamic performance and robustness, as it can mitigate SSO for all working conditions in the test, while the feasibility range of other methods is much smaller. Therefore, the influence of different parameters in a rotor-current-based SSDC on SSO mitigation is further researched, leading to a guideline for parameter selection. More importantly, to address the challenge of time-varying oscillation frequency, an adaptive frequency selection method is proposed based on the eigensystem realization algorithm, which can accurately track the SSO frequency within 5~45 Hz. The results of the root locus analysis and hardware-in-the-loop experiment demonstrate that the improved rotor-current-based SSDC performs better than other existing methods, and it does not affect the normal operation of the DFIG. |
| Databáze: | OpenAIRE |
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