Computer simulation of stand-alone photovoltaic systems with battery storage

 

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dc.contributor.advisor Eberhard, Anton en_ZA
dc.contributor.author Geerdts, Philip Clifford en_ZA
dc.date.accessioned 2016-10-19T03:51:04Z
dc.date.available 2016-10-19T03:51:04Z
dc.date.issued 1991 en_ZA
dc.identifier.citation Geerdts, P. 1991. Computer simulation of stand-alone photovoltaic systems with battery storage. University of Cape Town. en_ZA
dc.identifier.uri http://hdl.handle.net/11427/22177
dc.description Bibliography: pages 58-59. en_ZA
dc.description.abstract This report describes a computer program which has been developed to simulate accurately the performance of stand alone photovoltaic systems with battery storage on an hourly basis for one simulated year. The program incorporates models of the POA irradiance, the photovoltaic cell · temperature and the battery temperature to simulate the environmental conditions of the system. These require hourly weather data as input. Typical meteorological years, which constitute a suitable form of input weather data, have been generated for those weather stations in Southern Africa which contain sufficient data. The energy flows within the system are simulated using models of the following parameters: photovoltaic module current, regulator efficiency and voltage, battery current and voltage, inverter efficiency, load shed voltage and load current. These models incorporate versatility in the level of modelling complexity (determined typically by the availability of the data used to characterise the components). The various models are encapsulated in modular units to facilitate alteration and updating at a later stage. The program is designed to simulate photovoltaic systems without maximum power point trackers, necessitating the use of interactive curve solving to compute the system operating point at any time. A robust and comprehensive algorithm has been implemented to execute this function. Improved battery modelling has been effected using data and experience acquired from a parallel research project. The program facilitates, with the judicious selection of input weather data, the economical sizing of systems in that it incorporates loss of power probability analysis and offers a high level of modelling precision. The simulation performance of the program compared favourably with that of PVFORM. The system performance estimated by PVFORM was marginally better, which is expected because PVFORM assumes that the system operates with a maximum power point tracker. In the development of the program there has been a focus on creating an effective user interface. This is designed to simplify and speed up program operation, and to present output in a form which is useful and illustrative. en_ZA
dc.language.iso eng en_ZA
dc.subject.other Energy Research en_ZA
dc.title Computer simulation of stand-alone photovoltaic systems with battery storage en_ZA
dc.type Master Thesis
uct.type.publication Research en_ZA
uct.type.resource Thesis en_ZA
dc.publisher.institution University of Cape Town
dc.publisher.faculty Faculty of Engineering and the Built Environment
dc.publisher.department Energy Research Centre en_ZA
dc.type.qualificationlevel Masters
dc.type.qualificationname MSc (Eng) en_ZA
uct.type.filetype Text
uct.type.filetype Image
dc.identifier.apacitation Geerdts, P. C. (1991). <i>Computer simulation of stand-alone photovoltaic systems with battery storage</i>. (Thesis). University of Cape Town ,Faculty of Engineering & the Built Environment ,Energy Research Centre. Retrieved from http://hdl.handle.net/11427/22177 en_ZA
dc.identifier.chicagocitation Geerdts, Philip Clifford. <i>"Computer simulation of stand-alone photovoltaic systems with battery storage."</i> Thesis., University of Cape Town ,Faculty of Engineering & the Built Environment ,Energy Research Centre, 1991. http://hdl.handle.net/11427/22177 en_ZA
dc.identifier.vancouvercitation Geerdts PC. Computer simulation of stand-alone photovoltaic systems with battery storage. [Thesis]. University of Cape Town ,Faculty of Engineering & the Built Environment ,Energy Research Centre, 1991 [cited yyyy month dd]. Available from: http://hdl.handle.net/11427/22177 en_ZA
dc.identifier.ris TY - Thesis / Dissertation AU - Geerdts, Philip Clifford AB - This report describes a computer program which has been developed to simulate accurately the performance of stand alone photovoltaic systems with battery storage on an hourly basis for one simulated year. The program incorporates models of the POA irradiance, the photovoltaic cell · temperature and the battery temperature to simulate the environmental conditions of the system. These require hourly weather data as input. Typical meteorological years, which constitute a suitable form of input weather data, have been generated for those weather stations in Southern Africa which contain sufficient data. The energy flows within the system are simulated using models of the following parameters: photovoltaic module current, regulator efficiency and voltage, battery current and voltage, inverter efficiency, load shed voltage and load current. These models incorporate versatility in the level of modelling complexity (determined typically by the availability of the data used to characterise the components). The various models are encapsulated in modular units to facilitate alteration and updating at a later stage. The program is designed to simulate photovoltaic systems without maximum power point trackers, necessitating the use of interactive curve solving to compute the system operating point at any time. A robust and comprehensive algorithm has been implemented to execute this function. Improved battery modelling has been effected using data and experience acquired from a parallel research project. The program facilitates, with the judicious selection of input weather data, the economical sizing of systems in that it incorporates loss of power probability analysis and offers a high level of modelling precision. The simulation performance of the program compared favourably with that of PVFORM. The system performance estimated by PVFORM was marginally better, which is expected because PVFORM assumes that the system operates with a maximum power point tracker. In the development of the program there has been a focus on creating an effective user interface. This is designed to simplify and speed up program operation, and to present output in a form which is useful and illustrative. DA - 1991 DB - OpenUCT DP - University of Cape Town LK - https://open.uct.ac.za PB - University of Cape Town PY - 1991 T1 - Computer simulation of stand-alone photovoltaic systems with battery storage TI - Computer simulation of stand-alone photovoltaic systems with battery storage UR - http://hdl.handle.net/11427/22177 ER - en_ZA


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