PWM control is still in use but lower cost solutions have been implemented in most of the induction cookers.
Agreed. In fact, as stated in the many tech docs concerning induction cookers using resonance, resonant converter circuits are the path used to smaller, less costly components and higher efficiency.
I have shown that the exact same function can be and is also realized without resonance and so, resonance is not a key function of the gegene device.
You have shown it and it was also part of many of the OEM and engineering explanations relating to the improvements over such systems prior to LCC/LLC resonant power converters and induction cookers using the same technology. The same technical papers about resonant converters clearly explain that resonance is a key factor in the control of energy applied to the cooking pot.
As far as it being important in JLN's gegene.... that thought is absurd. Resonance or no resonance it would not be key in producing OU.
As far as it being used in the gegene.... I don't know and don't care. IMHO, it doesn't matter.
As already explained, repeatedly and clearly documented - If an induction cooker is using resonance it is usually to provide feedback to the controller so proper PRF (pulse rate frequency) and therefore controlled mutual induction and therefore power is applied to the varying sizes and construction of the many possible variations of cookware. This variation in PRF is varied from zero to the resonant frequency of the total RLC circuit (including the ferrite strips on the bottom of the coil and the cookware).
You can bark about Q all you wish. It doesn't matter. As long as Q>.5 there is resonance. When the driven PRF approaches the circuit resonance mutual induction increases but is never at the level of a conventional power transformer. Such high coupling would lower the Q and widen bandwidth to the point of being useless for controlling energy applied to the cookware.
Yes, PWM is still used, oviously. It is clearly a function in all recent induction cookers, including the ones where the OEM claim the use of resonance.
And this is confirmed by the fact that I also emphasized, that the resonance is not involved at the output and therefore a "resonant energy" can't be related to the output power. Moreover the Q is ridiculously low.
I must assume that you haven't read any documentation on the subject of resonant power conversion.
To invoke resonance when it can be avoid for the same result or when it is an accessory use somewhere in the electronics circuit is a twisted argument.
The same result is not possible using blind blasting of a PWM signal. That would be operation found prior to the development of resonant converters used in induction cooker, a radiant heater element or gas power.
Complain to the engineers designing these things, not to me.
Author
Topic: Naudin's Gegene (Read 204813 times)
