Can we join components of SimPowerSystems with that of simElectronics?

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muhammad saad malik 2015-7-24

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评论： Sebastian Castro 2015-7-29

Can we join components of SimPowerSystems with that of simElectronics. If yes, then how? Because a red wire appears when i try to join the ground with a BJT even when i use controlled voltage source.

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Answer 1

Sebastian Castro 2015-7-24

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Yes -- SimPowerSystems has an Interface Elements library with blocks like the Current-Voltage Simscape Interface.

Be warned, however, that these interface blocks go through Simulink signals and therefore create numerical algebraic loops that can be broken with filters within that same block. In other words, you should avoid using too many of these blocks. A few of them are fine, especially if you are trying to connect a large isolated SimPowerSystems network with another large isolated network in Simscape/SimElectronics.

- Sebastian

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muhammad saad malik 2015-7-29

i used the above block in a subsystem. the ssc side i connected to the optocoupler(an SimElectronic device) and the sps side i need to connect to the out1 of subsystem, and that out1 is then connected to the gate of an IGBT(a simPowerSystem device), but it is not getting connected(red wire). any solutions? i think some device to convert voltage to simulink signal is required.

Sebastian Castro 2015-7-29

The gate input of the SimPowerSystems IGBT block is a regular Simulink signal, so you don't need to go through the trouble of using an interface block.

What you can do is put a Current Sensor Simscape block in series with the Optocoupler output, convert it with a PS-Simulink Converter block, and apply that as the gate signal to your SimPowerSystems IGBT.

... or you can do the same with a Voltage Sensor in parallel if that's the way things are connected (I'm not a power electronics guy by ahy means :) ).

- Sebastian

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