wecopttool.pto.PTO.transduced_flow

PTO.transduced_flow(wec, x_wec, x_opt, wave=None, nsubsteps=1)[source]

Calculate the transduced flow variable time-series in each PTO DOF for a given system state. Equals the PTO velocity if no impedance is defined.

Examples for PTO impedance and corresponding flow variables:

  • OWC: (pneumatic admittance)^-1 : flow = volumetric air flow

  • Drive-train: rotational impedance : flow = rotational velocity

  • Generator: winding impedance: flow = electric current

  • Drive-train and Generator combined: flow = electric current

Parameters:

  • wec (WEC) – wecopttool.WEC object.

  • x_wec (ndarray) – WEC dynamic state.

  • x_opt (ndarray) – Optimization (control) state.

  • wave (DataArray | None) – 2D xarray.DataArray containing the wave’s complex amplitude for a single realization as a function of wave angular frequency omega (rad/s) and direction wave_direction (rad).

  • nsubsteps (int | None) – Number of steps between the default (implied) time steps. A value of 1 corresponds to the default step length.

Return type:

float