Improved numerical models and power output

We aim to improve both the amount of power our partners’ WECs produce and the numerical tools we can use to model them.

Detailed PTO model

We can improve our numerical simulations by having highly detailed models of the PTO system, which could be hydraulic or pneumatic. An example of a hydraulic system is below where we have accumulators, motors and generators, all directly coupled to the response of the WEC.

Smooth Particle Hydrodynamics (SPH) and Computational Fluid Dynamics (CFD)

Another method we are using to improve our models is to simulate the WECs using SPH and / or CFD. These detailed numerical models calculate the properties of the waves and the WEC in the entire fluid domain. This allows for highly detailed viscous and nonlinear effects to be modeled. 

Shape and WEC parameterization

We are looking at how some of the basic defining shape and WEC features affect the power output over a year in Canadian locations. We are running optimization studies to determine how to improve the WECs performance.

Control of WECs

We are researching methods to improve the amount of power that is produced by a WEC by controlling how it responds in different wave conditions. This has the opportunity to increase the amount of power that a WEC can generate.

Variable Inertia System Wave Energy Converter (VISWEC)

One of the projects the West Coast Wave Initiate is investigating is the development of a mechanically tunable self-reacting Wave Energy Converter, assuming knowledge of the incident wave spectrum.  Conceptually the tuning mechanism is based on a mass oscillating about a helical joint which is kinematically coupled to a flyball.  Adjusting the radial distance of the masses on the flyball from the rotation shaft changes the moment of inertia in the system.  The inertia of the system is an important control parameter as it determines how the WEC will respond to a wave at a particular frequency.