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Drsstc driver testing, 250 amps primary current.

Just some tinkering with the OCD and i messed with the interrupter frequency (though the on time was set at 60us). The waveform displayed is the primary current, each volt measured equals 10 amps o...  
 
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decod31 (3 months ago) Show Hide
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Did you not synchronize the switch off (ZVS)? Just asking because at 2:35 it looks like the square wave is cut in the middle of the cycle. Which IGBTs are you using?
triggerhappy77707 (3 months ago) Show Hide
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That was just my scope probe bypass trimmer being way off. It will turn a beautiful sine into a triangle. Quite a wide capacitance range. That was the gate waveform.

I am using G80N60UFD 80 amp 600 volt fast IGBTs, in a TO-3P package. Tiny heatsinks, but i left it running all night at 200 amps (accidentally) and they where not too hot. Just a bit warm, comfortable to touch :D

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