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Controlling high power AC or DC motors.

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jakeypoo:

--- Quote from: Gall on September 08, 2011, 07:19:26 am ---If you really, really have a reason not to use a off-the-shelf VFD, think about cloning one. It is easier to do some little changes (such as using a different layout and enclosure) than to design everything from scratch.

--- End quote ---
My thought's exactly.

I like the looks of some ST products for this sort of application.
http://www.stmicroelectronics.com.cn/internet/evalboard/product/251251.jsp?WT.ac=fp_sep11_steval-ihm028v1
http://parts.digikey.com/1/parts/1900435-igbt-ipm-module-17a-600v-25sdip-stgips20k60.html

The problem with these sort of one-off jobs is that there are a handful of other sensors and other actuators that need to be integrated into the system, so spinning my own board and cloning the required parts of a VFD makes sense. 

Maybe I'm just too much of a control freak to use everything off the shelf. I like to call it being detail oriented :)
Besides doing new things and learning is more fun.

Again, thanks for the input from everyone.

Zero999:
What's your budget and power requirements?

There are lots of Chinese VFDs on ebay.

Here's one which is much cheaper than the ones I use at work but I don't know the brand.
http://www.ebay.co.uk/itm/VARIABLE-FREQUENCY-DRIVE-INVERTER-VFD-NEW-3HP-2-2KW-10A-/110718279173?pt=UK_BOI_Electrical_Components_Supplies_ET&hash=item19c752de05

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