Problem in importing spice model to Simulink

Question

Xiaobo Dong 2021-12-23

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1616500-problem-in-importing-spice-model-to-simulink

回答： Sabin 2022-12-22

I have imported a spice model to simulink, but it doesn't work. After getting the R8003KND3TL1.lib, I've run

subcircuit2ssc('R8003KND3TL1.lib','+mylibrary');
ssc_build mylibrary;

and got mylibrary_lib.slx which contains the model. I build a simple circuit as:

where Vdc = 400V, Vg = 0/4V according with the device, and R = 1000 ohm.

However, there is some error:

```

运行仿真时出错，仿真终止(Error running simulation, simulation terminated)

Reason: all components and nodal across variables involved

Cannot solve for one or more variables, including dynamic variable derivatives:

Time derivative of 'r8003knd3.M1.cap_cgdo.Qcap' (Charge)

Time derivative of 'r8003knd3.M1.cap_cgso.Qcap' (Charge)

Time derivative of 'r8003knd3.M1.mos_cin.Qd' (Drain charge)

'r8003knd3.M1.cap_cgdo.i' (Current)

'r8003knd3.M1.cap_cgso.i' (Current)

'r8003knd3.M1.mos_cin.Id' (Drain current)

all components and nodal across variables involved

Cannot solve for one or more variables, including dynamic variable derivatives:

Time derivative of 'r8003knd3.M1.cap_cgso.Qcap' (Charge)

Time derivative of 'r8003knd3.M1.mos_cin.Qb' (Bulk charge)

Time derivative of 'r8003knd3.M1.mos_cin.Qg' (Gate charge)

'r8003knd3.M1.cap_cgso.i' (Current)

'r8003knd3.M1.mos_cin.Ib' (Bulk current)

'r8003knd3.M1.mos_cin.Ig' (Gate current)

Problems possible for transient initialization, as well as stepsize control for transient solve, due to equations (including nonlinear equations) of one or more components:

all components involved

'untitled/r8003knd3'

Equation locations are:

'D:\MATLAB\R2021b\toolbox\physmod\elec\library\m\+ee\+additional\+spice_semiconductors\spice_mos3_charge.sscp' (no line number info)

Problems possible for transient initialization, as well as stepsize control for transient solve, due to equations (including nonlinear equations) of one or more components:

all components involved

'untitled/r8003knd3'

Equation locations are:

'D:\MATLAB\R2021b\toolbox\physmod\elec\library\m\+ee\+additional\+spice_semiconductors\cap.sscp' (no line number info)

'D:\MATLAB\R2021b\toolbox\physmod\elec\library\m\+ee\+additional\+spice_semiconductors\spice_mos3_charge.sscp' (no line number info)

'D:\MATLAB\R2021b\toolbox\physmod\elec\library\m\+ee\+additional\+spice_semiconductors\cap.sscp' (no line number info)

'D:\MATLAB\R2021b\toolbox\physmod\elec\library\m\+ee\+additional\+spice_semiconductors\spice_mos3_charge.sscp' (no line number info)

```

How do I solve the problem?

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Answer 1

Sabin 2022-12-22

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1616500-problem-in-importing-spice-model-to-simulink#answer_1134692

The conversion is fine, it seems that the simulation model is a bit challenging for the continuous solver. The simple model will simulate with the local solver. For some help you can check the SPICE Conversion of a MOSFET Subcircuit and Validation workflow in Simscape Electrical. I hope this helps.