[jackbauer]

So I'm working on a new upgrade. I call it the "supercharger" Design aim is to charge any pack voltage between 100v and 500v dc at upto 300amps. Currently running from a 415v 3 phase ac supply for tests using electric cooker heater rings. Sadly , they dont last very long at high voltage and current. Rather they glow bright orange before giving a polite fizzzzz and die. Note to self , find better load bank. Anyway I'm having a bit of trouble driving the igbt. Its a rather dated fuji 1mbi600u4d 600a 1200v device and i'm running at 8khz for testing. Its suffering from sever miller effects at turn on. Using a ACNW3190-000E 5amp igbt driver opto and a single 15v dc supply.

The photos taken on the crt scope were across C-E via a differential probe.

Any advice or comments welcome.