fastga_he.models.propulsion.components.connectors.inverter.components.sizing_thermal_resistance_casing module

class fastga_he.models.propulsion.components.connectors.inverter.components.sizing_thermal_resistance_casing.SizingInverterCasingThermalResistance(**kwargs)[source]

Bases: ExplicitComponent

Computation of thermal resistances between the casing and the heat sink.

According to Semikron technical information, the heat transfer from junction to heat sink can be either modeled with a casing plate considered common to all junctions (consequently, a common R_th_cs for all modules), or consider individual R_th_cs. We will choose the former. The consequence is that the thermal resistance will only depend on the size of the casing and since it is a constant shared between the IGBT7 modules considered, this modules will return a constant for now, but it might change hence the choice of keeping it as a component.

Store some bound methods so we can detect runtime overrides.

initialize()[source]

Perform any one-time initialization run at instantiation.

setup()[source]

Declare inputs and outputs.

Available attributes:

name pathname comm options

compute(inputs, outputs, discrete_inputs=None, discrete_outputs=None)[source]

Compute outputs given inputs. The model is assumed to be in an unscaled state.

An inherited component may choose to either override this function or to define a compute_primal function.

Parameters:

  • inputs (Vector) – Unscaled, dimensional input variables read via inputs[key].

  • outputs (Vector) – Unscaled, dimensional output variables read via outputs[key].

  • discrete_inputs (dict-like or None) – If not None, dict-like object containing discrete input values.

  • discrete_outputs (dict-like or None) – If not None, dict-like object containing discrete output values.

compute_partials(inputs, partials, discrete_inputs=None)[source]

Compute sub-jacobian parts. The model is assumed to be in an unscaled state.

Parameters:

  • inputs (Vector) – Unscaled, dimensional input variables read via inputs[key].

  • partials (Jacobian) – Sub-jac components written to partials[output_name, input_name]..

  • discrete_inputs (dict or None) – If not None, dict containing discrete input values.