An adaptive third order digital filter based technique of single stage 3P4W SPV system

This paper presents a single stage 3P4W (Three Phase Four Wire) SPV (Solar Photovoltaic) by using an adaptive third order digital filter based control technique. The proposed 3P4W SPV system has two main sections. The first section is used to obtain peak power from the SPV array by using an INC (Incremental Conductance) based control technique. Whereas, in second section, an adaptive third order digital control technique is used for neutral current suppression, harmonics mitigation, load balancing and power factor correction. Unlike the conventional control techniques, the proposed technique does not require any decoupled control, integral, phase estimation section and coordinate transformation. Therefore, computation complexity and calculation per steps are reduced. The experimental result are demonstrated to verify that the proposed control technique can mitigate the harmonics current and load neutral current under nonlinear loads and also provides good dynamic performance under various operating conditions.

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