Quote:
Originally Posted by e*clipse
Those boost switches would probably need to carry more current than a phase leg.
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That is what I was thinking when I saw 4 power sections
the chunky prius booster switch has to carry the conversion current for all three phases, i.e. if the converter output is 150a @600v, and the input is 300a @ 300vish, the inductor sees 300a, the top diode sees 150a semi constant (depending on converter design) and the bottom switch swings/chops between 300ish and zero. Meanwhile the inverter switches only have an average of 50a each to deal with.