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Registered Member #242
Joined: Thu Feb 23 2006, 11:37PM
Location: Erie PA
Posts: 210
My biga$$ H-Bridge design: (For reference, the heatsinks are 16" X 10" X 1")
IGBTs are 2500V, 1200A RMS. Bus caps are 3300uF 400V. There will be 2 rows of 6 in series/parallel giving me 9900uF @ 800V. I also have some 4uF 1400V snubber caps (1100Apeak 0.7mOhm ESR and <20nH inductance) that I can stick in there. but it would make assembly slightly more challenging.
The bus bar will be 1" wide copper, probably 1/8th" thick. I was planning on buying some nice bar stock, but it looks like I'm going to need around 10 feet of it.
Most likely going to be building a DRSSTC, but I'll design it so I can drive other things.
Registered Member #1643
Joined: Mon Aug 18 2008, 06:10PM
Location:
Posts: 1039
I decided to paint my mots black for extra looks...Just to try something different, these were iron/Grey color to start with. I just figured a gloss-black may add more looks.
Question is...What I will be doing about the secondary. I rather not paint it as that risks issues, unless I cover it in varnish first. Or, I might just leave it as-is. The primary is rather fine. Secondary just has the super thick resin.
Ya, I like them. Just have to touch them up a little By the way, The paint used is Engine Enamel which is ceramic based paint. It has only been applied to the core. It's made to withstand Gas, liquids, and over 500F temperatures.
Registered Member #89
Joined: Thu Feb 09 2006, 02:40PM
Location: Zadar, Croatia
Posts: 3145
Jrz126 wrote ...
IGBTs are 2500V, 1200A RMS. Bus caps are 3300uF 400V. There will be 2 rows of 6 in series/parallel giving me 9900uF @ 800V. I also have some 4uF 1400V snubber caps (1100Apeak 0.7mOhm ESR and <20nH inductance) that I can stick in there. but it would make assembly slightly more challenging.
The bus bar will be 1" wide copper, probably 1/8th" thick. I was planning on buying some nice bar stock, but it looks like I'm going to need around 10 feet of it.
Most likely going to be building a DRSSTC, but I'll design it so I can drive other things.
Wow, what monster can we expect from this? :O More pix plz!
Anyways, here are some pics of me on a windsurfing school I attended this summer - nothing really spectacular yet, but it got me hooked. I'm definitely getting my own gear next year! Are there any Windsurfers/surfers around this forum?
Firstly, an obligatory pic of me in Neoprene:
Although it was not obvious near the coast the wind was really great that day - enough to stir large waves farther of coast and give me lots of pain getting the sail out of water. But riding it was so amazing.
Registered Member #1643
Joined: Mon Aug 18 2008, 06:10PM
Location:
Posts: 1039
Nice macros Madz! I'll have to post some of mine when I'm home, I got supermacro which says it's minimum focal point is 10mm, and the camera is a 20x optical zoom. Actually takes good macros for such a high zoom rate! Will get pictures soon =)
I'll hopefully get outdoors tomorrow, but here's indoors of some parts! I litterly just put my cam lens as close as I can, to the point that my lens was 1cm to 5mm away from the object.
Had the camera set to focus on a specific spot, and track it.
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Post Your Cool Pic Here!
By the way, The paint used is Engine Enamel which is ceramic based paint. It has only been applied to the core. It's made to withstand Gas, liquids, and over 500F temperatures.
