The performance of grid integrated renewable energy systems largely depends on the control system used for each of the energy conversion process. An abrupt change in input, variability of load conditions and grid faults cause the DC bus voltage to fluctuate which is normally compensated by PI controllers. This paper presents a parametric study carried out for improving the system performance of grid-tied photovoltaic with battery energy storage systems (BESS). The power converters such as the grid side voltage-sourced converter and bi-directional DC/DC converter are optimized by using the simplex optimization algorithm with objective of minimizing the DC bus voltage fluctuations under severe operating conditions. The advantage of adopting the proposed optimization method is analyzed by comparing the simulation results carried out using a set of optimized parameters with those of conventional trial and error method. The benefits of using BESS as an additional source for regulation are also discussed. © 2012 Praise Worthy Prize S.r.l. - All rights reserved.
|Number of pages||674|
|Journal||International Review on Modelling and Simulations|
|Publication status||Published - 01 Jan 2012|