کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
6764459 1431579 2018 42 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Numerical and experimental studies of excitation force approximation for wave energy conversion
ترجمه فارسی عنوان
مطالعات عددی و آزمایشی تقریب نیروی تحریک برای تبدیل انرژی موج
کلمات کلیدی
مدل سازی نیروی تحریک تأیید مدل، تبدیل انرژی موج، شناسایی سیستم، ناظر ورودی نامعلوم، آزمون تانک موج،
موضوعات مرتبط
مهندسی و علوم پایه مهندسی انرژی انرژی های تجدید پذیر، توسعه پایدار و محیط زیست
چکیده انگلیسی
Past or/and future information of the excitation force is useful for real-time power maximisation control of Wave Energy Converter (WEC) systems. Current WEC modelling approaches assume that the wave excitation force is accessible and known. However, it is not directly measurable for oscillating bodies. This study aims to provide accurate approximations of the excitation force for the purpose of enhancing the effectiveness of WEC control. In this work, three approaches are proposed to approximate the excitation force, by (i) identifying the excitation force from wave elevation, (ii) estimating the excitation force from the measurements of pressure, acceleration and displacement, (iii) observing the excitation force via an unknown input observer. These methods are compared with each other to discuss their advantages, drawbacks and application scenarios. To validate and compare the performance of the proposed methods, a 1/50 scale heaving point absorber WEC was tested in a wave tank under variable wave scenarios. The experimental data were in accordance with the excitation force approximations in both the frequency- and time-domains based upon both regular and irregular wave excitation. Although the experimental data were post-processed for model verification, these approaches can be applied for real-time power maximisation control with excitation force prediction.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Renewable Energy - Volume 125, September 2018, Pages 877-889
نویسندگان
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