I'm building (well, trying to) an induction heater for a school project. I'm having several problems with it, however, and I was wondering if any of you could help me out.
The setup I'm using is a half-bridge MOSFET driven inverter, and I'm using the following components:
2 IPW50R399CP MOSFETs
10 .47μF / 850V Tank Capacitors
3 .33μF / 630V Blocking Capacitors
1 Ferrite Core Inductor (Not sure of the inductance, I can probably manipulate it significantly, though)
1 .01μF / 100VDC Bus Capacitor
I don't have the work coil set up yet, but again, I can probably manipulate it to whatever is required.
The problems I'm having is understanding what exactly is the function of the MOSFETs... I understand that they provide high frequency switching, but what purpose is that if we can already establish an alternating current?
The other thing I'm worried about is the gate-drive circuitry for the MOSFET? I have no idea about that, although I'm guessing it powers the gates on the MOSFETs with a specific voltage, causing them to switch.
If anyone can help me with any of this, I would GREATLY appreciate it.
Thanks in advance.
The setup I'm using is a half-bridge MOSFET driven inverter, and I'm using the following components:
2 IPW50R399CP MOSFETs
10 .47μF / 850V Tank Capacitors
3 .33μF / 630V Blocking Capacitors
1 Ferrite Core Inductor (Not sure of the inductance, I can probably manipulate it significantly, though)
1 .01μF / 100VDC Bus Capacitor
I don't have the work coil set up yet, but again, I can probably manipulate it to whatever is required.
The problems I'm having is understanding what exactly is the function of the MOSFETs... I understand that they provide high frequency switching, but what purpose is that if we can already establish an alternating current?
The other thing I'm worried about is the gate-drive circuitry for the MOSFET? I have no idea about that, although I'm guessing it powers the gates on the MOSFETs with a specific voltage, causing them to switch.
If anyone can help me with any of this, I would GREATLY appreciate it.
Thanks in advance.