From 16f6ec0d3e172b050981a4f74641bef2f23ec2c3 Mon Sep 17 00:00:00 2001 From: Michael Wetter Date: Thu, 14 Nov 2024 12:09:27 -0800 Subject: [PATCH] Change initialization of electrical load (maint 9.1) For #4048 --- Buildings/Electrical/DC/Loads/Resistor.mo | 2 +- Buildings/Electrical/Interfaces/Load.mo | 9 ++++++++- Buildings/Resources/Scripts/BuildingsPy/conf.yml | 4 ---- 3 files changed, 9 insertions(+), 6 deletions(-) diff --git a/Buildings/Electrical/DC/Loads/Resistor.mo b/Buildings/Electrical/DC/Loads/Resistor.mo index a45ffe14a11..16bef82695c 100644 --- a/Buildings/Electrical/DC/Loads/Resistor.mo +++ b/Buildings/Electrical/DC/Loads/Resistor.mo @@ -47,7 +47,7 @@ The temperature T is the temperature of the heat port if useHeatPor
  • November 2, 2024, by Michael Wetter:
    Changed guarding against division by zero.
    This is for -#4032. +Buildings #4032.
  • November 3, 2015, by Michael Wetter:
    Set default value for P_nominal to avoid an error when translating diff --git a/Buildings/Electrical/Interfaces/Load.mo b/Buildings/Electrical/Interfaces/Load.mo index 63efea7234b..5a25c2a9888 100644 --- a/Buildings/Electrical/Interfaces/Load.mo +++ b/Buildings/Electrical/Interfaces/Load.mo @@ -22,7 +22,7 @@ model Load "Partial model for a generic load" or linearized))); parameter Buildings.Electrical.Types.InitMode initMode( min=Buildings.Electrical.Types.InitMode.zero_current, - max=Buildings.Electrical.Types.InitMode.linearized) = Buildings.Electrical.Types.InitMode.zero_current + max=Buildings.Electrical.Types.InitMode.linearized) = Buildings.Electrical.Types.InitMode.linearized "Initialization mode for homotopy operator" annotation(Dialog(tab = "Initialization")); Modelica.Units.SI.Voltage v[:](start=PhaseSystem.phaseVoltages(V_nominal)) = @@ -113,6 +113,13 @@ equation annotation ( Documentation(revisions="
    • +November 14, 2024, by Michael Wetter:
      +Changed default initialization method to using linearized model rather than zero current, as +the latter causes a division by zero in OpenModelica during the homotopy initialization.
      +This is for +Buildings, #4048. +
      • +
    • January 30, 2019, by Michael Wetter:
      Set start value for P.
      • diff --git a/Buildings/Resources/Scripts/BuildingsPy/conf.yml b/Buildings/Resources/Scripts/BuildingsPy/conf.yml index c924d3318f9..4f12f2239b6 100644 --- a/Buildings/Resources/Scripts/BuildingsPy/conf.yml +++ b/Buildings/Resources/Scripts/BuildingsPy/conf.yml @@ -38,10 +38,6 @@ openmodelica: comment: simulation terminated by an assertion at initialization. simulate: false -- model_name: Buildings.Electrical.DC.Loads.Examples.LinearizedLoad - openmodelica: - comment: '''omc'' caused ''simulation terminated by an assertion at initialization''.' - simulate: false - model_name: Buildings.Examples.DualFanDualDuct.ClosedLoop optimica: comment: CVode and Radau5ODE hang since https://github.com/lbl-srg/modelica-buildings/pull/3109, likely because Xi rather than mXi is a state