Control of Photovoltaic-Variable Speed Diesel Generator battery-less hybrid energy system

Abstract

A predictive dispatch algorithm and control for a Photovoltaic-Variable Speed Diesel Generator battery-less hybrid energy system is proposed in this paper. The diesel generators are dispatched based on the predicted net load from the incorporated prediction models. The proposed algorithm is based on the one-hour ahead prediction models to forecast the renewable resource and the load demand. Besides, an adaptive dispatch which is based on one minute average data is also included to complement the predictive dispatch strategy. The adaptive dispatch reacts to the power flow imbalances occur during the intervals in between the prediction periods. This dual-dispatch algorithm is to ensure the on-line diesel capacity is always sufficient throughout the operation. Simulation of the system is performed using MATLAB/Simulink.