The Simulation And Analysis Of Resonating Type Wave Power System And Experimental Study On Its Hydraulic Power Take-off Device

Domestic energy distribution and economic development are asymmetrically distributed in space; the development of distributed renewable energy benefits to solving the electricity demandsof load centers. China has a longer coastline; however, inexhaustible supply of marine renewable energy is lack of effective usein largescale. Main technical bottleneck is the stability, reliability and efficiency are difficult to be ensured. Traditional wave power generation device utilizes movement in one freedom; the resonance type wave power generation device can use heave and pitch energy in both directions in theory; so it can be more efficient in capturing energy; thereby,efficiency of utilizing wave energy is improved.This article uses the micro oscillation amplitude wave theory description working wave situation, has given the resonating type wave energy electric power facility principle of work as well as the dynamic equation, and using moves the grid technology, the VOF method, the pressure correction method, the open canal boundary condition as well as the value sand beach technology, unified ANSYS 14.0 System the Coupling module in to suppose under the stationary wave situation to the electricity generation buoy the movement to carry on the simulation computation, the use user from the definition function (UDF) compilation level sway in the cabin in vivo dynamic equation, obtained in has supposed under the stationary wave situation the level sway movement time interval curve.May know through the simulation computation that,The buoy oscillation amplitude had decided its capture wave energy size, the oscillation amplitude bigger buoy movement displacement is bigger, therefore transmits on the buoy the speed and the energy is bigger, like this causes the buoy is popular the wave radiation energy to be bigger, the buoy radiation energy and the wave energy installment movement concerns.Moreover also may discover, stirs up the strength in the wave under the actuation, the airtight cabin movement is very small, then installs to the fluid territory radiant energy is very small, suspends the oscillation amplitude is big.Therefore in principle may the majority of absorption energy conversion for the load energy.In this paper, according to on prototype for of theory calculation obtained of conclusions, for prototype light contains, and speed, and power small of features design and achieved has set valve controlled hydraulic mention can device, the device of features is it is resonance catching can system of part, by multiple hydraulic components constitute, in resonance wave power system in the equivalent damping device of role, through swap speed valve opened degrees of regulation can achieved energy of extraction. Through and numerical simulation experiment of results phase combines, paper used hydraulic pump, and proportions adjustable speed valve, and three bit four pass reversing valve and related electrical control components, simulation in swell district of wave role Xia, power floating body and level cross pendulum of relative movement by caused of hydraulic cylinder displacement, then on hydraulic mention can device for has test and experiment, experiment results showed that:storage device although can in reversing process in the up to regulator fill oil role, but in filling pressure high of situation Xia has may will makes pipeline within produced short Shi of negative pressure. Hydraulic cylinder reversal moment due to inertia will continue to drive the hydraulic oil hydraulic motors rotate at this point if we do not adjust the speed control valve opening, due to the inertia of the hydraulic motor will pipe in hydraulic pump to tank, thereby adding to the negative pressure inside the pipeline, leads to chatter in line. The hydraulic device in open parking in the process can quickly build pressure and has a good static stability, fluctuation of output power 2.7%. By regulating the flow of pipeline can be found device again in a relatively short period of time to reach a new equilibrium, open valve speed control valve inlet pressure can be maintained unchanged, when the catching device power captures more stable, load does not fluctuate much, can accurately control the extraction of energy. If the load suddenly decreases, will lead to sharp increase in speed, during the experiment were found in case of suddenly with no load, hydraulic motor speed rising very fast, in this case requires throttle speed control valve opening control, flow in the piping, hydraulic devices working loads need to be greater than the pressure relief valve setting pressure value. Experiments under resonant wave power device feature the design principle of the hydraulic device to meet the design requirements.