wecopttool.pto.PTO.transduced_effort

PTO.transduced_effort(wec, x_wec, x_opt, waves=None, nsubsteps=1)[source]

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

Examples for PTO impedance and corresponding effort variables:

  • OWC: (pneumatic admittance)^-1 : effort = air pressure

  • Drive-train: rotational impedance : effort = torque

  • Generator: winding impedance: effort = voltage

  • Drive-train and Generator combined: effort = voltage

Parameters:

  • wec (WEC) – wecopttool.WEC object.

  • x_wec (ndarray) – WEC dynamic state.

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

  • waves (Dataset | None) – xarray.Dataset with the structure and elements shown by wecopttool.waves.

  • 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