Grid Connected Multi-Input Wind Energy/Dual Battery Power System with Active Power Filter Capability
نویسنده
چکیده
The main core of this paper is design to generate a constant AC-output voltage irrespective of the wind speed. It is integrated with buck/buck-boost multi input DC-DC converter and a full-bridge DC-AC inverter which supplies grid/residential load in a unified structure. In this structure, each switching cycle of the proposed boost converter is divided into five switching periods. These switching periods introduce five different duty ratios for the proposed boost converter and can be controlled independently. The BESS is used as an energy storage element for the purpose of voltage regulation and acts a dual power source. When power fluctuation occurs in the system, the BESS can be used to level the power fluctuation by charging and discharging operation. The HDGS operates in various operation modes such as normal operation, dispatching operation and power smoothing. The power operation mode in the proposed structure is defined and controlled using fuzzy logic control scheme. At varied level of wind speed power operation modes are verified. It has been simulated using MATLAB/SIMULINK software. KeywordsGrid Wind energy system, Dual battery, Hybrid power integration, Power quality, Active filter, Fuzzy logic controller.
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