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Induction melt system query

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goldsmith

goldsmith

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Hi guys
I want to design a simple induction melt with h bridge that switched with 300KHZ SPWM . my power is about 400 watt . is it possible? if yes , how can i design its series resonant circuit?
With Appreciate
Goldsmith
 

Similar to an induction cooker, but with a cylindrical coil around the crucible instead of the cooker's planar coil.
 

Dear FvM
Hi
Thank you for your reply.
But How can i design that according to my frequency and power? and is that power enough for this application?
Is it possible that you guide me , please?
Best Regards
Goldsmith
 

Unfortunately, I can't answer the question. In addition, there's one point I didn't consider in my first answer. Induction cookers are mainly designed to work with ferromagnetic cookware. High material permeability considerably reduces skin depth and changes the required coil impedance. I still assume, that you can achieve some heating effect at the typical induction cooker frequencies of 20 - 30 kHz, also higher frequencies may be reasonable.
 
Dear Fvm
Hi
Is your mean that 300KHZ is not good for this aim? and what do you think about that power? is that ok for this purpose?
Thanks In advance
Goldsmith
 

There are many web pages out there describing induction furnaces
and so on. Your required power level really is about thermal losses
(crucible, air convection) and how much time you're willing to wait
for melting. These numbers seem normal to high for frequency and
maybe a bit low for power, but most work is about larger melts.
You might need to respect spectrum and power level regulations
in an industrial product; for hobby you might get away with more,
for a while).

Coil power and workpiece power probably have a relation that
varies with metal type. Gold or silver might produce pretty low
eddy current losses while iron would be pretty high (so more
efficient in heating).
 
Dear Friends
Hi
Thanks for your helpful replies. i wanna melt a piece of aluminum . what do you thing about AL ?
Again Thanks for your replies.
Goldsmith
 

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