ZVS single-switch inverter for induction heating – optimum operation

The optimum operation of a single-switch class E transistor inverter for induction heating has been discussed in the paper. The graphs of the most important inverter parameters as a function of the values of the resonant circuit components are shown. The results presented have been illustrated with some current and voltage waveforms obtained on the basis of mathematical analysis as well as using IsSpice simulation program. A concept of a control system has also been presented, which should ensure nearly optimum operation of the inverter. Streszczenie. W artykule omowiono prace optymalną jednolącznikowego tranzystorowego falownika klasy E do nagrzewania indukcyjnego. Przedstawiono wykresy najwazniejszych parametrow falownika w funkcji wartości elementow obwodu rezonansowego. Podano przykladowe przebiegi czasowe prądow i napiec w falowniku otrzymane zarowno na podstawie analizy matematycznej, jak i poprzez symulacje w programie IsSpice. Przedstawiono rowniez koncepcje ukladu sterowania falownika, ktory powinien zapewniac prace w warunkach bliskich optymalnym. (Jednolącznikowy falownik z przelączaniem ZVS do nagrzewania indukcyjnego praca optymalna)

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