Simulation: Investigate loss mismatch between simulation and bench measurements

[luizvilla]

Context

Source: session recap email (2026-02-19)

Problem

Current simulation predicts lower losses than bench measurements. Candidate causes were identified (Rac, capacitor ESR, component models), but no structured investigation exists yet.

Expected Outcome

A calibrated model investigation closes the gap between simulation and measurement, starting with DC total loss alignment before AC refinements.

Scope

In:

• Quantify current simulation-vs-measurement mismatch.
• Test candidate contributors: Rac, capacitor ESR, component model updates.
• Prioritize matching Ptot DC before extending to dynamic conditions.
  Out:
• Major control software refactor.
• Bench hardware redesign.

Acceptance Criteria

• Baseline mismatch (simulation vs bench) is reported with reproducible test case.
• At least 3 candidate model adjustments are evaluated and documented.
• A recommended updated model set is proposed with before/after error metrics.

Evidence / Notes

• Email excerpt: "Les premiers ajustements ont montré des pertes plus faibles entre simu et manipe ... Ajouts Rac, ESR condensateurs, modèles composants ... se rapprocher au niveau Ptot DC"
• Related files/paths: simulations/Hackathon_Si_Losses.asc, simulations/Hackathon_Si_Losses_full.asc
• Related issue(s): none

[luizvilla]

Related issues created from the same session recap:

• Documentation: Define archive and descriptor synchronization governance: Documentation: Define archive and descriptor synchronization governance #8
• Simulation: Publish adjusted simulation set to shared Pandore path: Simulation: Publish adjusted simulation set to shared Pandore path #9
• Simulation: Investigate loss mismatch between simulation and bench measurements: Simulation: Investigate loss mismatch between simulation and bench measurements #10
• Measurement: Validate automatic Total R computation in single-point-test flow: Measurement: Validate automatic Total R computation in single-point-test flow #11
• Instrumentation: Stabilize DMM trigger timing for fast phase sweep plateaus: Instrumentation: Stabilize DMM trigger timing for fast phase sweep plateaus #12
• Validation: Document benchmark point and bench-vs-simulation comparison protocol: Validation: Document benchmark point and bench-vs-simulation comparison protocol #13