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Converter model from Sam Seo and Bang Nguyen at NLR #697

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Merged
gbarter merged 4 commits into from
Feb 14, 2026
Merged

Converter model from Sam Seo and Bang Nguyen at NLR #697

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05ac97d
include cost and efficiency model for the converter from Sam Seo and …
ptrbortolotti Feb 12, 2026
2a0d715
fix drivetrain test error
ptrbortolotti Feb 12, 2026
17ee460
Merge branch 'develop' of github.com:NLRWindSystems/WISDEM into conve…
ptrbortolotti Feb 13, 2026
0fc637c
fix test glue code
ptrbortolotti Feb 13, 2026
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458 changes: 458 additions & 0 deletions wisdem/drivetrainse/converter.py
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5 changes: 4 additions & 1 deletion wisdem/drivetrainse/drivetrain.py
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Original file line number Diff line number Diff line change
Expand Up @@ -7,7 +7,7 @@
from wisdem.drivetrainse.hub import Hub_System
from wisdem.drivetrainse.gearbox import Gearbox
from wisdem.drivetrainse.generator import Generator

from wisdem.drivetrainse.converter import Converter

class DriveMaterials(om.ExplicitComponent):
"""
Expand Down Expand Up @@ -238,6 +238,9 @@ def setup(self):
# Dynamics
self.add_subsystem("dyn", dc.DriveDynamics(), promotes=["*"])

# Converter costs and efficiency
self.add_subsystem("converter", Converter(), promotes=["machine_rating"])

# Output-to-input connections
self.connect("bedplate_rho", ["pitch_system.rho", "spinner.metal_rho"])
self.connect("bedplate_Xy", ["pitch_system.Xy", "spinner.Xy"])
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1 change: 1 addition & 0 deletions wisdem/glue_code/glue_code.py
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Expand Up @@ -832,6 +832,7 @@ def setup(self):
self.connect("drivese.total_bedplate_mass", "tcc.bedplate_mass")
self.connect("drivese.yaw_mass", "tcc.yaw_mass")
self.connect("drivese.converter_mass", "tcc.converter_mass")
self.connect("drivese.converter.Cost_B2B", "tcc.converter_cost_external")
self.connect("drivese.transformer_mass", "tcc.transformer_mass")
self.connect("drivese.hvac_mass", "tcc.hvac_mass")
self.connect("drivese.cover_mass", "tcc.cover_mass")
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7 changes: 6 additions & 1 deletion wisdem/nrelcsm/nrel_csm_cost_2015.py
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Expand Up @@ -596,14 +596,19 @@ class ConverterCost2015(om.ExplicitComponent):
def setup(self):
self.add_input("converter_mass", 0.0, units="kg")
self.add_input("converter_mass_cost_coeff", 18.8, units="USD/kg")
self.add_input("converter_cost_external", 0.0, units="USD")

self.add_output("converter_cost", 0.0, units="USD")

def compute(self, inputs, outputs):
converter_mass = inputs["converter_mass"]
converter_mass_cost_coeff = inputs["converter_mass_cost_coeff"]
converter_cost_external = inputs["converter_cost_external"]

outputs["converter_cost"] = converter_mass_cost_coeff * converter_mass
if converter_cost_external == 0.0:
outputs["converter_cost"] = converter_mass_cost_coeff * converter_mass
else:
outputs["converter_cost"] = converter_cost_external


# ---------------------------------------------------------------------------------
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