Design of a Hybrid Wave Energy Converter for Escravos using PHK-ROS Model

Abstract

In this research, a hybrid wave energy converter (HWEC) is designed for Escravos deep sea, and its power generation capacity is evaluated. The system is proposed for a combination of WEC and solar power to improve the energy efficiency and reliability. It is supposed to incorporate forty-four WECs and four hundred and forty PV solar panels of 500W each. Wave data and solar irradiance data from the Escravos offshore area were used to evaluate HWEC performance. The WEC is analysed using Port-Hamiltonian Koopman Reduced Order Stochastic (PHK-ROS) model. The PHK-ROS model analysed a maximum of 2641W for one of the WEC floaters, and a total of 116.204kW generated by all forty-four WEC floaters. The period of the wave crest is between 0 and 4.5 seconds. The solar array provides a constant daily power of 928.46 kWh/day with an aggregate power production of 176 kW. Solar analysis shows that there are 5.4 to 6.2 peak sun hours per day on average between November and February. Between May and October, the average hours to receive the sun per day range from 1.3 to 4.12 hours. The total power output result of one WEC floater for different time intervals shows an oscillatory trend variation in the interval from approximately 0 to 2.641kW. The total power produced by the forty-four WEC is 116.2kW. The HWEC patterns indicate that the Solar Plant provides a base load of energy of 10.746 kW. At the same time, the WEC provides the region with dynamic peak power, forming a complementary renewable energy resource for the region of Escravos, with the average combined power of 292.2 kW. The solar share is 26.2% and the WEC share is estimated at 73.8%.