The Simulation and Experimental Study of Hydraulic Transmission with Constant-pressure Scheme for Wave Energy Converter Application

5th International Symposium on Hydrogen Energy, Renewable Energy and Materials

能源学;材料科学

Juwairiyah, S.^1 ; Ibrahim, M.Z.^1 ; Albani, A.^1 ; Yusop, Z.M.^1 ; Jusoh, M.A.^1 ; Mohad, S.^1

Eastern Corridor Renewable Energy (ECRE), School of Ocean Engineering, Universiti Malaysia Terengganu, Kuala Nerus

21030, Malaysia^1

关键词: Constant pressures;    Different pressures;    Electrical generation;    Hydraulic pistons;    Hydraulic system;    Physical experiments;    Simulation data;    Wave energy converters;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/605/1/012007/pdf
DOI  :  10.1088/1757-899X/605/1/012007

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

This paper presents the simulation and experimental results of the hydraulic system for wave energy converter application. The different input force applied from the pump unit will imitates the force of wave energy converter (WEC) produced by the ocean waves motion. The simulation conducted using the Hydraulic FluidSIM® 5th version, while the experiment was conducted at Festo-Hydraulic Laboratory. In FluidSIM®, the role of wave floater represented by a set of pump unit that will provide desired pressure to the hydraulic piston. The pump unit consists of a motor, pump, tank and pressure relief valve. The input pressure at the pump unit was adjusted in twelve different levels in the range of 5 Bar to 60 Bar. The different pressure will create a different oil velocity that caused the extension and retraction of the piston. The different pressure also will create a different speed (measured in RPM) of a hydraulic motor. An accumulator and four units of check valves used to drive the moving oil in unidirectional at a smooth flow rate. As a result, the rise of input pressure at the pump unit will increase the speed of a hydraulic motor. For this reason, to achieve the optimal electrical generation by a generator that mounted with hydraulic motor, the higher input pressure is needed. Furthermore, the simulation is validated by the physical experiment to determine the accuracy of generating data. The averaged accuracy of simulation data compared to experimental is 89.92%. After all, the finding from this study will be utilised as a reference in the estimation of the optimal dimension for the actual scale of a hydraulic system for application in the WEC.