berger.h
Member level 5
I'm thinking of an induction melting furnace.
My idea is
1. 3 phase diode rect, optional 1 phase
2. Big capacitor as power source
3. Big IGBT full bridge for example any as 2x CM400du-12F 600V 400A
4. H bridge works over resonant inductor L1 to isolation transformer T1 20:1
5. Sec of T1 is one thread of water cooled Cu 6mm pipe, this pipe is too 10 thread of heating inductor L2
6. L2 and || resonant capacitor C3 make resonant parallel LC
H bridge is drived as DC-DC stage: full-bridge phase-shifted ZVS
The control electronics automatic tunnig frequency of switching on resonant frequency when is on Voltage sense max voltage.
IGBT is over drive transformer any MCU as ST32F334 with HRTIM as full digital control. All design on resonant frequency about 100kHz
My idea is
1. 3 phase diode rect, optional 1 phase
2. Big capacitor as power source
3. Big IGBT full bridge for example any as 2x CM400du-12F 600V 400A
4. H bridge works over resonant inductor L1 to isolation transformer T1 20:1
5. Sec of T1 is one thread of water cooled Cu 6mm pipe, this pipe is too 10 thread of heating inductor L2
6. L2 and || resonant capacitor C3 make resonant parallel LC
H bridge is drived as DC-DC stage: full-bridge phase-shifted ZVS
The control electronics automatic tunnig frequency of switching on resonant frequency when is on Voltage sense max voltage.
IGBT is over drive transformer any MCU as ST32F334 with HRTIM as full digital control. All design on resonant frequency about 100kHz
Last edited: