{"title":"Microcontroller Implementation of an MPPT Algorithm using Decremented Windows Size Scanning Method for Photovoltaic Systems","authors":"T. Suhaebri, Faizal Arya Samman, A. Achmad","doi":"10.1109/SPEC.2018.8635970","DOIUrl":null,"url":null,"abstract":"This paper presents a hardware implementation of MPPT algorithm. SEPIC converter is proposed and designed as DC/DC converter. The control unit for MPPT using P&O based algorithm is namely decremented window/frame-size scanning. The global MPP is tracked by the MPPT algorithm by reducing the frame size of the domain scanning for every iteration. Duty cycle of a pulse-width modulation (PWM) signal is used as the scanning unit. The circuit performance monitoring is made by using an interface software that can generate real-time graphics. The system is real tested under three partial shading scenarios. The result shows that the MPPT circuit can reach maximum efficiency of 85 %. The number of iterative frame reduction step to reach global MPP is about 3 steps with 33 ms to finish all steps.","PeriodicalId":335893,"journal":{"name":"2018 IEEE 4th Southern Power Electronics Conference (SPEC)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2018-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"2018 IEEE 4th Southern Power Electronics Conference (SPEC)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/SPEC.2018.8635970","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 0
Abstract
This paper presents a hardware implementation of MPPT algorithm. SEPIC converter is proposed and designed as DC/DC converter. The control unit for MPPT using P&O based algorithm is namely decremented window/frame-size scanning. The global MPP is tracked by the MPPT algorithm by reducing the frame size of the domain scanning for every iteration. Duty cycle of a pulse-width modulation (PWM) signal is used as the scanning unit. The circuit performance monitoring is made by using an interface software that can generate real-time graphics. The system is real tested under three partial shading scenarios. The result shows that the MPPT circuit can reach maximum efficiency of 85 %. The number of iterative frame reduction step to reach global MPP is about 3 steps with 33 ms to finish all steps.
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