HAI Han, GAO Yu, LI Kun, et al. Optimization Study of Composite Resonance Low-frequency Sound Absorption Structure for Renewable Energy Power Stations[J]. 2025, 53(7): 69-75.
HAI Han, GAO Yu, LI Kun, et al. Optimization Study of Composite Resonance Low-frequency Sound Absorption Structure for Renewable Energy Power Stations[J]. 2025, 53(7): 69-75. DOI: 10.20204/j.sp.2025.07009.
Optimization Study of Composite Resonance Low-frequency Sound Absorption Structure for Renewable Energy Power Stations
To enhance low-frequency noise control in renewable energy power stations,a lightweight and high-efficiency low-frequency sound absorption structure is proposed.The central resonance panel adopts a simply-supported constraint,improving low-frequency sound absorption performance and bandwidth to some extent.A finite element simulation model of an impedance tube was established to analyze the effects of parameters such as the micro-perforated panel structure,cavity thickness,and central resonance panel on sound absorption performance.Balancing cost-effectiveness and noise reduction performance,an optimized parameter combination for the sound absorption structure was determined,and impedance tube simulation and experiment analysis were conducted.The results show that the structure’s sound absorption coefficient is significantly enhanced in the low-to-mid frequency range with an absorption bandwidth covering 200~1 000 Hz,meetsing the mid-to-low-frequency absorption requirements for noise reduction in renewable energy power stations.This study provides a reference for designing sound absorption structures and noise barriers.
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