I am working on building a arduino based dc-dc converter for my wind turbine. I have 260 ft of wire from the turbine to the house and am loosing more than half my power in wire losses at 12V. I want to build a 60V generator and send 60V DC (7% loss) to the house then the arduino chops it through a H-Bridge circuit, feeds it to a step down transformer to drop it to 12V. Rectifiers then convert it back to DC.
Mosfets are 400V 35A PNP and NPN (so they don't fry if the turbine goes open circuit)
Transformer is custom wound Primary 42,52,57 turns and Secondary 8,10,12 turns
Arduino Uno board using pins 1-4, I'm bit banging to keep it simple and allow for adjustable dead time between transitions to prevent shoot-through.
Problem I am having is that this is my first transformer project and I have no idea what the primary wave form should look like. Signal from arduino is crisp, signal from mosfet bridge in open circuit has slow fall times (first picture). This can be cleaned up by adding a small resistor across h-bridge output (second picture). When connected to the transformer it turns into a mess (third picture) I have a 100uF cap on the power side of the mosfet driver. Dead time is exagerated for diagnostic purposes till I know this is safe to operate. Does this look right or am I missing something?