Quote:
Originally Posted by JRoque
Hey SGC, is yours a different design than Paul's or are you contributing to his power section?
You might be aware of this but proceed with caution with protoboarding IGBT/FETs - they tend to be touchy to inductance. Keeping the driver and power bus close by helps quite a bit. There's also current loops to watch out for in your layout - I've been bitten by this before and it can be tricky. Star ground, single returns as much as you can.
Best of lucks and post your schems when you get a free min.
JR
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Paul is using a premade 1.5 HP power section, so mine is different. However, I believe I am using the same dsPIC, and I am designing the power section to hook up directly to the PWM output pins of the dsPIC, so what ever logic Paul comes up with should work just fine, but I would need to check my papers. I do have some information on the power section Paul is using, but haven't really read into it yet.
Protoboards are pretty awful, so I usually take the results with a grain of sand. I am just going to start off with one of the phases and make sure I can turn the IGBT on/off when running a small LED and check it with the scope.
Of course, first come replacing the battery pack in my EV and then cleaning up my work bench so I can actually prototype.