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Three-phase thyristor full-bridge rectifier

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AMSA84

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Hello there guys,

I am trying to simulate a 3-phase full-bridge rectifier with thyristors, but I am having some problems.

The schematic is as follows:

schematic.JPG

When I simulate that I get a current of 1kA and I don't know why. Can someone help me out?

waveform.JPG

I am not sure if I am doing right or not. The connection of the the power supply is star with ground terminal at the common connection. The load is RLE. But I don't have there a ground terminal too. Am I suppose to use a ground terminal at the load, I mean, at the common anode connection of the thyristors?

Regards.

When I
 

Looks like the thyristors are fully on, which would explain the observed current level. Trigger scheme isn't shown, so nothing to say for the time being.

You are right however, that because the power supply is grounded, the output circuit must be floating. This is apparently the case in your schematic.
 

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