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Need help in 3 phase inverter

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Ehab Abdalla

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Hi everyone,I have problem in controlling three phase inverter and I'm not able to figure it out.
I've attached the schematic.If anyone have suggestions or figured out the cause of the problem Please let me know
Problem:Simulation runs for just 1 second then stops saying there's an error in pin1 of optocoupler .
Thanks in advanceView attachment help.pdfView attachment help.pdf
 

There is a resistor at pin 1 of each optocoupler.
Is its value high enough to limit current to a safe level?

Would the simulator call it an error if current is greater than the internal LED is rated for?

Suppose you move the resistor to pin 2 instead?

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You have 3 sections to simulate the 3 phase power. While you are troubleshooting this project, it might help if you simplify it back to one phase.
 

Make and connect battery -neg as ground 0V . Similarly connect optocoupler to ground .
 

connect pin 2 of the optocoupler directly to ground. that should solve the problem.
 

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