8d7931417f6c57ac1bfbefae6190c470 sustainability_a2016v8n8p748.pdf 1c7a08ed7d5d1e8c162dfd133aa7e60211a41d84 sustainability_a2016v8n8p748.pdf 05fdcaad2d261ebf9a27378b853fc0d5d82ab8e52899af6aafd61aec08dcecdb sustainability_a2016v8n8p748.pdf Title: Intelligent Control of a Distributed Energy Generation System Based on Renewable Sources Subject: The control of low power systems, which include renewable energy sources, a local network, an electrochemical storage subsystem and a grid connection, is inherently hierarchical. The lower level consists of the wind energy sources (power limitation at rated value in full load regime and energy optimization in partial load regime) and photovoltaic (energy conversion optimization) control systems. The present paper deals with control problem at the higher level and aims at generating the control solution for the energetic transfer between the system components, given that the powers of the renewable energy sources and the power in the local network have random characteristics. For the higher level, the paper proposes a mixed performance criterion, which includes an energy sub-criterion concerning the costs of electricity supplied to local consumers, and a sub-criterion related to the lifetime of the battery. Three variants were defined for the control algorithm implemented by using fuzzy logic techniques, in order to control the energy transfer in the system. Particular attention was given to developing the models used for the simulation of the distributed energy system components and to the whole control system, given that the objective is not the real-time optimization of the criterion, but to establish by numerical simulation in the design stage the “proper” parameters of the control system. This is done by taking into account the multi-criteria performance objective when the power of renewable energy sources and the load have random characteristics. Keywords: hierarchical control; fuzzy control; storage system; renewable energy Author: Ciprian Vlad, Marian Barbu and Ramon Vilanova Creator: LaTeX with hyperref package Producer: pdfTeX-1.40.15 CreationDate: Thu Aug 4 13:41:25 2016 ModDate: Thu Aug 4 13:41:25 2016 Tagged: no UserProperties: no Suspects: no Form: none JavaScript: no Pages: 23 Encrypted: no Page size: 595.276 x 841.89 pts (A4) Page rot: 0 File size: 5054418 bytes Optimized: no PDF version: 1.5 name type encoding emb sub uni object ID ------------------------------------ ----------------- ---------------- --- --- --- --------- LPWJAF+URWPalladioL-Ital Type 1 Custom yes yes no 89 0 PZIZWO+URWPalladioL-Bold Type 1 Custom yes yes no 90 0 LHZDJI+URWPalladioL-Roma Type 1 Custom yes yes no 91 0 IZBVAO+TimesNewRomanPS-BoldItalicMT Type 1C WinAnsi yes yes no 95 0 CHIQWS+TeX-matha10 Type 1 Builtin yes yes no 126 0 JEKKJK+PalatinoLinotype,Italic TrueType WinAnsi yes yes no 157 0 JEKKJM+PalatinoLinotype TrueType WinAnsi yes yes no 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