Production of clean, green solar PV (SPV) power in developing countries now becomes a trend because of their economic and technical benefits. Therefore, generating maximum power out of the SPV is a key searchable area. The SPV must produce power at its terminal at their maximum possible power. To reach to the maximum possible power, maximum power point tracker is used in conjunction with SPV. Extracting maximum power from SPV under varying partial shading condition is one of the important factor in performance improvement of SPV. The characteristics of classical MPPT controller is not acceptable under variable shading condition. A clear distinction between global maxima power point from global minima using MPPT technique must be needed for extracting maximum power. This paper proposes a PO MPPT based particle swarm optimization with improved search space, optimised through Fuzzy Fokker Planck solution. The pre-defined search space has been introduced to provide fine tune to membership function used in Fuzzy logic controller. The partial shading performance has been examined under four different condition such as active partial shading, colour spectrum, dust level and GHG concentration. Both hardware and simulation studies has been carried out for the proposed techniques. The MATLAB simulation result and that of proposed MPPT, offer more and better performance in terms of algorithm convergence by enhancing the efficiency of system under varying shading condition.

To extract regulated power supply from the inputs of unregulated conditions, the zeta converter topology is the major application in the power electronics current mode operation. Zeta convertor can interfaced for high frequency application with a less switching stress and also it obtains regulated output voltage from the given input voltage which varies below and above output voltage, When compared with buck, boost, buck-boost and cuk converter, it gives non pulsating current with reduced settling time with adaptability. For different duty cycles and constant switching frequencies, the zeta converter with resistive load gives better results for buck and boost application.

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