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How is induction coil driven in Induction cooktops ?

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milan.rajik

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How is induction coil driven in Induction cooktops ? SCR, TRIAC, IGBT ?

Is PWM used to control the power of the induction coil that is by controlling the phase angle of current to induction coil ?

If yes, can anybody provide me what different PWM duties I have to use to get the different power ratings used in Induction cooktops.

I am planning to produce Induction cooktops and want to use PIC32 MCU for that. Is there any better MCU which can be used for the purpose ?
 

There are a wide range of topologies used which affect choice of magnetics and drivers. lower f (50kHz) are easier but transparent to aluminum pots. higher f (<500KHz) are more difficult resonant mode and subject to interfere with AM radios but work on Alum. due to eddy current losses.

As usual, Google Images with schematic in keywords is a great start.

https://www.google.ca/search?sclien.....0...1c.1.56.tablet-gws..8.2.231.PjWnzgaA6Z0
 

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