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Design of Domestic Induction Cooker based on Optimal Operation Class-E Inverter with Parallel Load Network under Large-Signal Excitation
Patipong Charoenwiangnuea, Chainarin Ekkaravarodome, Itsda Boonyaroonate, Phatiphat Thounthong, and Kamon Jirasereeamornkul
Abstract A design of a Class-E inverter with only one inductor and one capacitor is presented. It is operated at the optimal operation mode for domestic cooker. The design principle is based on the zero-voltage derivative switching (ZVDS) of the Class-E inverter with a parallel load network, which is a parallel resonant equivalent circuit. An induction load characterization is obtained from a large-signal excitation test bench, which is the key to an accurate design of the induction cooker system. Consequently, the proposed scheme provides a more systematic, simple, accurate, and feasible solution than the conventional quasi-resonant inverter analysis based on series load network methodology. The derivative of the switch voltage is zero at the turn-on transition, and its absolute value is relatively small at the turn-off transition. Switching losses and noise are reduced. The parameters of the ZVDS Class-E inverter for the domestic induction cooker must be selected properly, and details of the design of the components of this Class-E inverter need to be addressed. A 1,200 W prototype is designed and evaluated to verify the validation of the proposed topology.
Keyword Induction heating, Domestic induction cooker, Class-E inverter; Zero-voltage switching, Zero-derivative switching, Lumped-parameter
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