| Autor: |
WANG Chencheng, PU Lijuan, DU Bin, WAN Zhongbing, ZHANG Junsheng, ZHAO Zhihui |
| Zdroj: |
Electric Drive; 2022, Vol. 52 Issue 5, p14-20, 7p |
| Abstrakt: |
Because the calculated results of the traditional fuzzy adaptive inertia controller that uses one constant output scaling factor can only show the modest changing trend, it might not be able to provide sufficient inertia to attenuate the further frequency deviation when the frequency deviation is close to the allowable value. In order to solve the problem, an improved fuzzy adaptive inertia based virtual synchronous generator (VSG) technique was proposed to attenuate the microgrid frequency fluctuation. The novelty mainly includes that the concept of frequency deviation threshold was developed, which was incorporated into the fuzzy controller design process. When the microgrid frequency deviation is lower than the threshold, a smaller output scaling factor is adopted to calculate the real-time inertia, but when the frequency deviation is larger than the threshold, a larger output scaling factor is employed to provide sufficient inertia. The simulation and experimental results prove that the proposed improved fuzzy adaptive inertia based VSG is able to ensure the fast frequency response when the frequency deviation is low, and improve the system safety when the frequency deviation is high, reflecting that it is of high value in the practical applications. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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