AC to DC Matrix converter Driver circuit Design

[adnan012]

hi,

I want to design the matrix converter given in the attached file. There is an AC source connected to the bidirectional switches. How gates are derived in this situation? I have generated required signal patterns using pic controller and each signal is isolated via opto coupler. I don't know how to interface the output side of the opto couple to the matrix converter switches gates? Do i need to use mosfet driver like irs2110 for driving high side and low side switches?

 

[FvM]

I don't think that IR2110 can work for this circuit topology. You need an isoated power supply for each switch branch.

 

[adnan012]

Thanks for reply.

Can you explain in more detail?

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The switch network is connected to a step down 12 volt transformer.

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The controller board is powered by the rectified output of another step down 12 volt transformer (using bridge and 5v regulator).

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How can i realize an isoated power supply for each switch branch? there are 4 opto couplers, do i need to power them with different isolated power supplied?

 

[adnan012]

I have found a document related to the issue. At page 289 figure 12, there are four boards.

1) Controller Board (upper left )
2) Voltage regulator Board (Bottom left)
3) Opto coupler board (Bottom Right)
4) Coverter Board (upper Right)

There are 5 transformers.