Dynamic performance of a point absorber WEC considering nonlinear hardening spring under irregular waves

Dynamic performance of a point absorber WEC considering nonlinear hardening spring under irregular waves

Blog Article

Wave energy is a kind of clean renewable energy that is huge and still need further research.Point absorber wave energy converter (PA-WEC) is widely utilized for offshore power devices.The PA-WEC utilizes the heave motion to drive linear electric generator or a hydraulic motor to generator using power take off (PTO) system.

And the PTO system usually is assumed to be a linear spring and a linear damper.Because of the larger motion, the PTO Zanussi ZOF35601XK Built Under Double Oven in Stainless Steel system, which exhibited non-linear behavior, is considered as linear spring with the nonlinear hardening spring and a linear damper.Through the time domain method, the dynamic model of the PA-WEC is developed under irregular waves.

The state space model replaced the convolution term in the frequency domain equation.The dynamic response of the PA-WEC is researched considering different environmental parameters by Runge-Kutta method.Then the power and power ratio performance of the system is obtained.

Compare with the linear WEC, the results show that the nonlinear WEC can increase the Course a pied - Accessoires - Montres power captured in irregular waves.