Slipping clutch modelling

If required, a slipping clutch may be modelled. This is assumed to be at the generator end of the high-speed shaft. The clutch slipping Friction should be entered, and any additional Stiction which has to be overcome before slipping begins. The HighSpeedShaftInertia must be specified if the slipping clutch is to be used, as it accounts for the rotational inertia of the high-speed shaft up to the clutch which is otherwise considered part of the generator, see Figure 1 or the multibody diagram for illustrations.

The slipping clutch is not included in simulations of type "Campbell Diagram", "Model Linearisation" or "Steady Parked". This is because the transition from slipping and sticking is discontinuous and so the model cannot be linearised.

Figure 1: Diagram illustrating the drivetrain with a slipping clutch, and how the HighSpeedShaftInertia and GeneratorInertia is considered.

List of all the available properties of the SlippingClutch object:

• Friction: The friction of the clutch once in motion.
• Stiction: The stiction or static friction of the clutch which opposes the initial movement.
• HighSpeedShaftInertia: The rotational inertia of the high-speed shaft up to the clutch. This is only relevant if there is a slipping clutch present, as otherwise it can be considered part of the generator. See Rotational Inertia of the Drivetrain for more details.

Example of a SlippingClutch:

 "SlippingClutch": {
        "Friction": 42400.0,
        "Stiction": 0.0,
        "HighSpeedShaftInertia": 21.5
      },