Quote:
Originally Posted by ChazFisher
This design was the high frequency transformer type. We had done a design for a very large motor drive, using 3-level neutral point clamp phase legs built with 3300V/1200A IGBTs. The idea was to adapt those to the SST. We built and tested several transformers, using microcrystaline cores, trying to push the frequency up towards 5 kHz. They worked pretty well, but we ran out of money before actually building enough phase legs to assemble the entire system
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1200A switching at 5000 Hz generates a lot of heat. Was the cooling system impressive?
I'm not familiar with high end transformers, but microcrystaline does not sound familiar. Expensive of course, but does it shed heat well?