| Oscillation suppression strategy of wind-thermal-bundled system based on predefined time fractional-order sliding mode control |
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| English Abstract: |
| Aiming at the oscillation suppression issue of wind-thermal-bundled system, a predefined time fractional-order sliding mode control(PTFOSMC) is proposed for both the direct drive wind farm converter and synchronous generator. The PTFOSMC adopts the form of fractional-order differentiation and its expression is continuous description, which can better reduce the buffeting phenomenon of traditional sliding mode controller. Based on the Lyapunov function, it is proved that PTFOSMC can guarantee the stability of the system in the bounded convergence time and the convergence time is independent of the initial state. The simulative results show that, compared with the proportional-integral control and the fixed-time fractional-order sliding mode control, the system has shorter convergence time and smaller oscillation amplitude under PTFOSMC, which validates the effectiveness and superiority of the proposed strategy. |
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| English and key words:wind-thermal-bundled system oscillation suppression predefined time fractional-order sliding mode control fractional-order differential Lyapunov function |
| 基金项目:国家重点研发计划项目(2022YFB2403100) |
| DOI：10.16081/j.epae.202412015 |
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