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One unit of 3-phase rectifier bridge vs Three units of 1-phase rectifier

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ehsan_a

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Hi All,


In terms of efficiency, does it matter if I use Three units of 1-phase rectifier to rectify my phases and then add them together? The reason is to monitor the events during an experiment.


Thanks
 
If you want full-wave rectification, then the 3-phase bridge uses fewer diodes.
 
You can rectifry 3 phase with just 2 full wave bridges, connect 2 phases to one bridges ac connections, and just connect the third phase to either of the ac connections on the second bridge, and then connect the + and -'s togther on both.
 
Hi All,


In terms of efficiency, does it matter if I use Three units of 1-phase rectifier to rectify my phases and then add them together? The reason is to monitor the events during an experiment.


Thanks

No, it does not. Costing . . . Yes.

Ramesh
 
You can rectifry 3 phase with just 2 full wave bridges, connect 2 phases to one bridges ac connections, and just connect the third phase to either of the ac connections on the second bridge, and then connect the + and -'s togther on both.

You would get slightly better efficiency at no cost, but some asymmetry, by connecting the unused ac connection on the second bridge to any one of the input phases.
 
Yes maybe by effectively paralleling the diodes.
If your using the bridge to measure then maybe this isnt a good strategy.
 
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