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Old 05-19-2011, 04:43 AM   #62 (permalink)
ianbartie
VW Polo EV
 
Join Date: Aug 2009
Location: Port Macquarie
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Getting my head around IGBTs

At the risk of sounding like a complete dill, my understanding of IGBTs is that 1 IGBT module of a suitable capacity (that is another issue) coupled with 1 IGBT driver board can replace the 10 Mosfets, 10 diodes, 16 power caps, the 3 poly caps & the big chunk of copper that is the heat spreader that is currently my power section.
I guess the IGBT module would need to be bolted to the controller case heat sink.
Is an IGBT power section more efficient, more reliable & generate less heat than a Mosfet power section?
Does each IGBT module need its own driver board or can a driver board run several modules?
I dont have big current requirements. The Cougar 511A capacity is enough but I am looking for maximum reliability.
Am I on the right track here?
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