期刊名称：International Journal of Innovative Research in Science, Engineering and Technology
印刷版ISSN：2347-6710
电子版ISSN：2319-8753
出版年度：2017
卷号：6
期号：6
页码：10177
DOI：10.15680/IJIRSET.2017.0606008
出版社：S&S Publications
摘要：In this work, Fuzzified battery charging system was designed and implemented using a PIC16F877Amicrocontroller. Three parameters of the battery (temperature, voltage and charging current) were monitored tofuzzylogically control the Pulse Width Modulated (PWM) output used to deliver the correct charging power. A MetalOxide Semiconductor Field Effect Transistors (MOSFETs) was used as a switching device controlled with pulse widthmodulated (PWM) output of the microcontroller. The rule-base is populated with expert knowledge of best practices inlead acid battery charging. On test, the prototype fully charged a good 12V 100AH Valve Regulated Lead Acid(VRLA) battery in 7hrs, at an average energy transfer efficiency of 77%. 80% battery capacity was reached in less than4 hours, without raising the battery temperature. The result marched what is obtainable with high quality lead acidbattery Chargers, but at a low cost. Future implementation of fuzzy logic controller on 8bit microcontroller will benefitimmensely from the rule base design methods used in this work.
