Singularity error in powergui

Question

arash moradinegade 2011-7-5

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/10912-singularity-error-in-powergui

回答： Veera Kanmani 2018-4-20

I am new in simulink. I am trying to model a system including both control and power segments connecting with a "Controlled Voltage Source". I have used fixed-step continuous ode3 simulation with time step equal to 60 (to simulate one minute). In powergui I have chosen continuous simulation with same time step (60). But after a few seconds I got the following error:

"Derivative input 1 of 'HRES/powergui/EquivalentModel1/State-Space' at time 31650.0 is Inf or NaN. Stopping simulation. There may be a singularity in the solution. If not, try reducing the step size (either by reducing the fixed step size or by tightening the error tolerances)."

I do not have any sub-system based on state-space in my design and it seems that powergui generate one automatically to simulate the power segment.

I cannot solve the problem, help me please. I got stock for a week:(

P.S. When I change the powergui using discrete simulation, it works but I got the above error when I am trying to sumulate continusly.