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Development Of Distributed Solar Rural Households System

Posted on:2012-01-28Degree:MasterType:Thesis
Country:ChinaCandidate:Y Z ZhuFull Text:PDF
GTID:2132330332489394Subject:Measuring and Testing Technology and Instruments
Abstract/Summary:PDF Full Text Request
About traditional stand-alone solar photovoltaic power generation system applied in rural power supply system, some problems exist, such as difficult expansion and high cost with the user's increasing electricity demand. This paper presents a new solar photovoltaic home system: distributed solar energy systems for rural families. It can not only perform the power seconded, power sharing and reduce the cost of a single family of electricity through the network among users, but also supply power for the use of high-power electrical equipment. This thesis includes the following aspects:1) By local power transmission unit, a distributed energy network was built up between the users. When power sharing communication unit sends the request, the system will allow and respond to requests to achieve power sharing in the case of owed the unit's battery power.2) Intelligent control unit of system is based on high-performance master chip for intelligent AT90CAN128. The intelligent control unit is used for completing own charge and discharge, real-time collection and storage of own parameters, the adjustments and amendments of own control parameters and the various circuit protection and other functions.3) Local power transmission unit adopts the bi-directional DC-DC converters technology to achieve power sharing of the hardware; software current sharing is used for load balancing unit to solve the problem of uneven load characteristics; the CAN field bus is used to realize level communications for realizing the power transfer requests among systems; this thesis develops a data communication protocol of power sharing communications unit combined with CAN2.0B agreement.4) System software is designed in the WIN-GCC platform to achieve power seconded between users, battery charging and dischargding, voltage and current collection of square and battery, CAN bus communication protocol analysis, battery temperature compensation, system operating data display and other functions. 5) With 12V distributed solar power generation system subjects, the system functions are tested. Test results show the design of distributed solar home systems in rural areas is feasible, and has some significance for engineering applications.
Keywords/Search Tags:distributed generation, energy networks, bi-directional DC-DC, power sharing
PDF Full Text Request
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