Power improvement using hartley S-transform for solar energy conversion system

Abstract

This study presents an approach of Hartley S-transform (HST) control algorithm for a solar energy conversion system (SECS) to improve the power quality of the distribution network. HST control algorithm is a time-varying function which uses Kernel function and applied to the load currents to extract their fundamental component. The load currents are non-stationary (spectrum is changing with time) and these signals require a sample method so HST provides reliable and desired time-frequency spectrum. The algorithm is tested in the presence of distorted load current and response of the algorithm is shown to be precise and fast. The grid current distortion is kept below 5% as specified by the IEEE 519 standard.