کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5127335 1489009 2017 13 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Design and experimental validation of a generalised electrical equivalent model of Vanadium Redox Flow Battery for interfacing with renewable energy sources
ترجمه فارسی عنوان
طراحی و اعتبار سنجی تجربی یک مدل معادل الکتریکی وانادیم ردوکس جریان برای ارتباط با منابع انرژی تجدید پذیر
موضوعات مرتبط
مهندسی و علوم پایه مهندسی انرژی انرژی (عمومی)
چکیده انگلیسی


- A generalised electrical equivalent model of VRFB has been proposed in MATLAB/Simulink for performance analysis.
- The self-discharge potential drop under open circuit condition is computed for designing efficient charge controller.
- The dynamic range of optimal flow rates corresponding to variable State of Charge is identified which leads to high overall VRFB system efficiency.
- The model is further utilized for interfacing the VRFB with solar PV microgrid system for optimized performance.

In this paper a MATLAB/Simulink based generalised electrical equivalent model of Vanadium Redox Flow Battery (VRFB) has been proposed with an objective of interfacing VRFB with renewable energy sources. The impact of practical parameters like flow rate, self discharge, pump power loss and charge-discharge current profile has been considered for analysing VRFB performance. The model involves online estimation of VRFB stack terminal voltage and state of charge (SOC) under different constant current charge-discharge profiles. The accurate estimation of electrical characteristics of VRFB leads to a benchmark for selection of the design parameters of an efficient charge controller taking into account the variability of renewable energy sources. An optimal range of variable electrolyte flow rates for dynamic SOC has been estimated to design suitable flow rate controller. This ensures minimum VRFB system power consumption during charging and maximum power output during discharging which leads to maximum overall VRFB system efficiency. A generic MATLAB library has also been created for optimal design of any generalised VRFB system. A practical 20 Cell 1 kW 6 h VRFB system has been used for experimental validation of simulation results of the proposed model which shows a very good agreement having maximum error within 0.5% and 0.21% for VRFB cell terminal voltage estimation during charging and discharging respectively. The proposed model of the VRFB system is then applied for interfacing and investigating the performance of a 1 kW 6 h VRFB with a microgrid system comprising of 10 kW Solar PV, local loads and distribution grid.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Energy Storage - Volume 13, October 2017, Pages 220-232
نویسندگان
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