Extend ROSCO for MHK

[AthulKrishnaSundarrajan]

Description and Purpose

Major Updates

• Extending ROSCO to support the control of marine hydrokinetic turbines (MHK), including changing fluid properties, a Test_Case and example.
• A new generator speed reference calculation that does not depend on the wind speed estimate.
• Any number of notch filters can be applied to the generator speed and/or tower top acceleration signals

Minor Changes

• Added VS_ConstPower as a specific control mode, separate from how the reference generator speed is calculated
• Added sweep_yaml_input to CaseLibrary for sweeping any single control_parameter (in the tuning yaml)
• Changes in run_FAST to improve flexibility and ability to run in WEIS environments
• Tidying of DISCON writer

Type of change

What types of change is it?
Select the appropriate type(s) that describe this PR

• Bugfix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (non-backwards-compatible fix or feature)
• Code style update (formatting, renaming)
• Refactoring (no functional changes, no API changes)
• Documentation update
• Maintenance update
• Other (please describe)

TODO Items General:

• Add example/test for new feature
• Update registry
• Run testing

TODO Items API Change:

• Update docs with API change
• Run update_rosco_discons.py in Test_Cases/
• Update DISCON schema

Github issues addressed, if one exists

Examples/Testing, if applicable

[dzalkind]

Are you using this? Could max_torque_factor just be used in the same way?

[AthulKrishnaSundarrajan]

Its not being used right now, and yes max_torrque_factor could be used.
Its something to increase the max torque when working with fixed pitch controls

[dzalkind]

comp_outputs.pdf
Testing results: nearly identical, only changes due to ICs. New VS_ControlMode not yet used.