History

Current

Projects

Archives

Sales

Order

Links

Home

This is the response from my brother-in-law, a degreed electrical engineer about my circuit.

Hey Randy!

I don't see anything wrong with that configuration.  Check the rectifiers
to see if the common pin is connected to the case.  No problem if it is,
you would just need to either insulate the case from the heat sink (if
needed) or forget the insulators and let the heat sink be hot from ground.
(can be risky since dropped tools are attracted to electrically hot
heat sinks and always land on the heat sink and ground!)

Paul

Below is my original question to him.

> Hello Paul,
> Could you check the attached schematic to see if it is correct?  I've
> got a permanent magnet motor that is brush less and wired is a "Star" or
> "Wye" configuration that I want to use as a generator for a windmill.  I
> bought some STM BYU52-200 rectifier diodes (looked neat) thinking it
> would be easy to make a bridge rectifier with them.  Am I on the right
> track?
>
> Randy B.

STM rectifier diodes.  BYV52-200 200 volt 50 amp high efficiency fast recovery diode in SOT-93 package.  There are actually two diodes in this module with the center lead being common. This makes three phase rectification pretty easy.  These are perfect for use with a Fisher & Paykel Smart Drive Motor.    For a Datasheet on this part from STMicroelectronics please  visit: http://www.angliac.co.uk/st/data_from_st/2963.pdf  

The above schematic is the result of a sharp reader.  He emailed me to say that my circuit would be more efficient if I added three more diodes.  He is correct.