DIY 6kw induction heater with delayed lock loop(DLL)and pulse density modulation control
Автор: Mojtaba shafigh aski
Загружено: 2023-05-31
Просмотров: 1179
Описание:
this is another series resonant induction heater ,current limiting and power control is done with pulse density modulation algorithms, for tracking the resonant frequency, for the first time it use a delayed lock loop(DLL) instead of commonly used PLL ,the main advantage of using DLL is its very short locking time that increases the reliability of the switching devices ,as shown in this video the heater can withstand and track very fast changes on the resonant circuit,like shorting the work coil and beacuse of using pulse density modulation , there's no hard switching at any point and we can choose low rated components:
IGBTs:4X fgh40n60smd on full bridge toplogy
maximum output: 6KW single phase
frequency range:30-100khz
maximum output current:800A
can withstand short circuit of work coil and noneloade situation continuesly
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