MATLAB: Does POWER_ANALYZE error out when I use it on the model in SimPowerSystems 5.2.1 (R2010a)

Question

I run POWER_ANALYZE on my model by issuing the following command:

 load_system (modelName)
 power_analyze(modelName,'structure')

The command errors out with:

 ??? Reference to non-existent field 'NumberOfSfunctionSwitches'.
 Error in ==> C:\Program
 Files\MATLAB\R2010a\toolbox\physmod\powersys\powersys\private\powersolve.p>powersolve 
 at 302
 <SNIP>

Answer 1

The error occurs when the model that is analyzed using POWER_ANALYZE does not contain a valid SimPowerSystems circuit. One such example is a model that contained only Simulink blocks and hence was not a suitable candidate to be analyzed.

The workaround is to use a valid model which contains a SimPowerSytems circuit.

Note that this error does not occur in later releases and due to the absence of a circuit the output structure will be mostly empty.