id summary reporter owner description type status priority milestone component version resolution keywords cc 3084 Under-determined linear system not solvable! Christian Kral Willi Braun "I noticed that the simulation of one the following examples in Modelica_Electrical_PowerConverters.Examples.ACDC.ThyristorBridge2mPulse 1. ThyristorBridge2mPulse_R 2. ThyristorBridge2mPulse_RL 3. ThyristorBridge2mPulse_RLV 4. ThyristorBridge2mPulse_RLV_Characteristic 5. ThyristorBridge2mPulse_DC_Drive causes multiple error messages of the kind: {{{ under-determined linear system not solvable! Matrix singular! }}} The first three examples at least simulate, even though these error messages occur. Example 4 takes too long to wait for the simulation to end. Example 5 does not finish simulation at all. I have to note, however, that these examples have been working in previous versions of OpenModelica. The actual bug report refers to * Ubuntu 14.04 32 bit * OpenModelica r24056 * Library Modelica_Electrical_PowerConverters located on https://svn.modelica.org/projects/Modelica_ElectricalSystems/Modelica_Electrical_PowerConverters/branches/Modelica_Electrical_PowerConverters%203.2.1; a modified version of this library is planned to be included in MSL 3.2.2 I am not sure whether this ticket is related with #2996 or not." defect accepted high Future *unknown* trunk