record FrictionParameters "Parameter record for friction losses"
extends Modelica.Icons.Record;
parameter Modelica.SIunits.Power PRef(min = 0) = 0 "Reference friction losses at wRef";
parameter Modelica.SIunits.AngularVelocity wRef(displayUnit = "rev/min", min = Modelica.Constants.small) "Reference angular velocity that the PRef refer to";
parameter Real power_w(min = Modelica.Constants.small) = 2 "Exponent of friction torque w.r.t. angular velocity";
final parameter Modelica.SIunits.Torque tauRef = if PRef <= 0 then 0 else PRef / wRef "Reference friction torque at reference angular velocity";
final parameter Real linear = 0.001 "Linear angular velocity range with respect to reference angular velocity";
final parameter Modelica.SIunits.AngularVelocity wLinear = linear * wRef "Linear angular velocity range";
final parameter Modelica.SIunits.Torque tauLinear = if PRef <= 0 then 0 else tauRef * (wLinear / wRef) ^ power_w "Torque corresponding with linear angular velocity range";
annotation (
defaultComponentPrefixes = "parameter ",
Documentation(info = "<html>\n<p>\nParameter record for <a href=\"modelica://Modelica.Electrical.Machines.Losses.Friction\">Friction</a> losses.\n</p>\n</html>"));
end FrictionParameters;