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Active Damping Strategies for Mitigating Resonances in Offshore Wind Farms: A Comparative Study of PWM and SHEPWM
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| Author(s) |
Iñigo PASCUAL, Naroa RAMOS, Eugenio GUBÍA, Jesús LÓPEZ, Javier SAMANES |
| Abstract |
This paper presents an active damping strategy to mitigate resonances in offshore wind farms caused by the parasitic capacitance of submarine cables, which challenge system stability and grid code compliance. The proposed method emulates a virtual impedance damping the wide range of resonances that appear in offshore wind farms, depending on its configuration and number of turbines connected. Its effectiveness is evaluated for two modulation techniques: PWM and selective harmonic elimination PWM. PWM generates predictable harmonic content outside the resonance range, enabling robust damping of resonances. In contrast, selective harmonic elimination PWM---though optimized to eliminate the harmonics in the resonance frequency range---introduces distortion in this range due to modulation-control interactions in closed-loop operation. This distortion demands excessive corrective action from the AD, limiting its practicality. The strategy and its results are validated through simulation. |
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| Filename: | 0294-epe2025-full-13140561.pdf |
| Filesize: | 822 KB |
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| Type |
Members Only |
| Date |
Last modified 2025-08-31 by System |
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