Please help! Lab Inverter Design

[charlieboy]

Hello everyone,

I really need lots of help here and really appreciate any help. I am trying to design a three phase lab dc-ac inverter.

Does anyone have a full step-by-step procedures of this circuit design and also the hardware implementation?

I really need it as a reference for my project.

Thanks!!

 

[Oznog]

What voltage input/output and power output are you talking about???

Most likey you would use a high freq transformer to boost to just over the RMS value of the output. The harmonics are better if the output's not a pure square wave but lingers at zero for awhile on each zero crossing. Thus the rail needs to be a bit over the RMS output value to compensate.

You might create a dual supply, in which case you'd have a fixed common on the output and flip between supplies, or single supply, in which case you'd flip the hot/common wires against the supply.

I think the same strategy works for 3 ph, but I don't know for sure.