converted to MSL 3.2.1; 
bugfixing: parameter tini(fixed=false) removed the binding =0

git-svn-id: https://svn.modelica.org/projects/Modelica_ElectricalSystems/Modelica_ElectricalEnergyStorages@6973 7ce873d0-865f-4ce7-a662-4bb36ea78beb