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دسته بندی:
مدیریت انرژی - Energy Management
سال انتشار:
2020
عنوان انگلیسی مقاله:
Renewable energy powered membrane technology: Energy buffering control system for improved resilience to periodic fluctuations of solar irradiance
ترجمه فارسی عنوان مقاله:
فن آوری غشایی با انرژی قابل تجدید: سیستم کنترل بافر انرژی برای بهبود مقاومت در برابر نوسانات دوره ای تابش خورشیدی
منبع:
Sciencedirect - Elsevier - Renewable Energy, 149 (2020) 877-889. doi:10.1016/j.renene.2019.12.033
نویسنده:
Sheying Li a, Achim Voigt a, Andrea I. Sch€afer b, Bryce S. Richards a, *
چکیده انگلیسی:
Energy management is required to enable autonomous photovoltaic-powered membrane (PV-membrane)
desalination systems to make the optimal use of solar energy. In this paper, a novel charge
controller based on pre-set voltage sensing thresholds was designed to optimise the energy from PV
panels and supercapacitors (SCs). The control algorithms were established from the data derivations with
high-temporal-resolution (1s) solar irradiance (SI) source, allowing for resilient system operation under
variable conditions. The impacts of ramp rates, in both SI and PV output voltage (VPV) on the system,
were systematically investigated. Under a worst-case scenario, with a rapid ramp rate of DVPV ¼ 2 V/s,
the charge controller enabled the SCs to bridge the power gap to 6 min 20 s, permitting an additional 10 L
of permeate water produced. The state-of-charge of the SCs varied from 11 to 86%, regardless of the
magnitude of the ramp rate. The combination of the voltage thresholds (Vpump_on ¼ 160 V and
Vpump_off ¼ 90 V) was determined to result in optimum system performance, realising a high permeate
production at low specific energy consumption. It is concluded that the proposed charge controller is an
effective method to enhance system resilience under worst-case solar conditions.
Keywords: Ramp rates | Charge controller | Supercapacitors | Photovoltaic | Reverse osmosis | Energy fluctuation
قیمت: رایگان
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