کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7167894 | 1462944 | 2017 | 17 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Modelling of degradation and a soft failure moment during the operation of a supercapacitor applying selected diffusion processes
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کلمات کلیدی
30C40LRM62P3062G0760J60FHT94A1760G51Supercapacitor - ابرخازنProbability - احتمالات، احتمالFirst hitting time - اولین بار ضربه زدن به زمانReliability analysis - تجزیه و تحلیل قابلیت اطمینانTrajectory analysis - تجزیه و تحلیل مسیرDegradation - تنزلDiffusion process - روند نفوذKullback-Leibler Divergence - رگرسیون کولبک-لیبلرFailures - شکستهاWiener process - فرآیند وینرLinear regression model - مدل رگرسیون خطیUTR یا untranslated regions - منطقه ترجمه نشدهvoltage - ولتاژThreshold voltage - ولتاژ آستانه
موضوعات مرتبط
مهندسی و علوم پایه
سایر رشته های مهندسی
مهندسی صنعتی و تولید
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
An important requirement imposed on storage batteries nowadays is to have sufficient capacity. At the same time a high level of availability, reliability and safety is required as well. Our intention is to determine a capacity degradation threshold and the moment the soft failure of a graphite supercapacitor (SC) occurs. If we do not take into account the idle state, the functioning of the supercapacitor might be expressed by charging and discharging processes under different operating conditions given by the allowed extent of SC design. When looking for the degradation threshold and the moment of soft failure occurrence we performed the experimental part of measuring in the climatic chamber. We performed and recorded the processes of SC charges and discharges at different temperatures: 40 °C, 25 °C and  â42 °C and at different charging and discharging currents: 2A, 4A, 6A and 8A. The experimental results were used to model mathematically the SC discharge process. Appropriate tools used for SC discharge are diffusion processes. In this case we apply a Wiener process with drift and an Itô process.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Engineering Failure Analysis - Volume 82, December 2017, Pages 566-582
Journal: Engineering Failure Analysis - Volume 82, December 2017, Pages 566-582
نویسندگان
David ValiÅ¡, OndÅej NováÄek, Kamila Hasilová, Jan Leuchter,