DC-link capacitor voltage control for singlephaseshunt active power filter with step sizeerror cancellation in self-charging algorithm - 2016

PROJECT TITLE :

DC-link capacitor voltage control for singlephaseshunt active power filter with step sizeerror cancellation in self-charging algorithm - 2016

ABSTRACT:

This study presents an improved self-charging algorithm by introducing a replacement feature called step size error cancellation for higher performance of DC-link capacitor voltage management in single-part shunt active power filter (SAPF). Previous works of self-charging algorithms were centered only for steady-state operation by using either proportional-integral (PI) or fuzzy logic control (FLC). However, in a sure operation of any Power System, dynamic operation could additionally happen. Thus, by introducing step size error cancellation as an additional feature to the self-charging algorithm, both steady state and dynamic operations will be coated. For evaluation and comparison analysis, self-charging with PI and FLC algorithms have been developed too. All the algorithms were simulated in MATLAB-Simulink, respectively, together with the only-part SAPF. For hardware implementation, the proposed algorithm was programmed in TMS320F28335 Digital Signal Processing board. The other two conventional self-charging algorithms were conjointly programmed for comparison purposes. From the results and analysis, the proposed self-charging with step size error cancellation shows the best performance with high accuracy, fast response time and less overshoot and undershoot. It performs well in both steady state and dynamic operations as compared with each previous self-charging techniques which solely work well in steady-state operation.

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