id	summary	reporter	owner	description	type	status	priority	milestone	component	version	resolution	keywords	cc
5574	Failed to solve linear system of equations because of wrong dynamic state selection	ahaumer@…	Lennart Ochel	"Dear OM-team,

I hope I have assigned correctly the solver problem to Backend.
I developed the enclosed small library about DC braking of induction machines for my lectures. 
There are 4 variants / layouts:
Y3 and Y2 simulate without complaints.
D2 and D3 fail (but they simulate in Dymola 2020).
I have no idea why the linear solver fails - could be a problem of index reduction?
Please analyze the problem:
* This should improve OM quality.
* This would enable me to let students simulate the applications.
In case of any questions, do not hesitate to contact me.

Many thanks & best regards,
Anton Haumer"	defect	new	blocker	1.19.0	Backend	v1.13.2		linear system of equations solver	christian@…