S. Park, K. Tanaka, Y. Miura, and T. Ise (Japan)
Independent power system, DC distribution system, Autonomous control system, and Agent communication
This paper proposes an intelligent control for distributed flexible network photovoltaic system. The small network is composed of a secondary battery and a number of subsystems which have solar array, DC/DC converter and load. The subsystem basically selects a control mode of MPPT (Maximum Power Point Tracking) and CV (Constant Voltage) controls by autonomous control depending on PV and load voltage. The autonomous control has advantages of fast response speed and no need of communication equipment. However, with only autonomous control, there are some problems associated with several cases such as that when the distance between subsystems and battery is long, it affects terminal outputs of the system so that the system misjudges decision of control modes. To overcome these problems, the authors propose introducing agents for this kind of system. The intelligent control scheme that employs the agent communication is applied for the system and it is verified with simulation, PSCAD/EMTDC in this paper.
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