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Home appliances are responsible of a significant part of residential energy consumption and have a major impact in the overall energetic system efficiency. Most of them perform an indirect ac-dc-ac conversion in order to obtain the required output voltage level and frequency, depending on the applications. Thus, a high-efficiency and power density converter is required for this application where cost-effectiveness...
Concentric coils are used in domestic induction heating system to improve the range of cookware sizes suitable to be heated up because the coils are switched on or switched off depending on the degree of their covering by the pot. The power is supplied by power converters, typically single-switch or half-bridge inverters, feeding the coils with a medium frequency current. However, the switching frequencies...
Operation under light-load conditions is a general issue when developing power converters, as it can lead to system instability and/or decreased performance. This topic is especially important for resonant converters, as the efficiency significantly degrades when the operation point is set out of the resonant conditions. Considering the importance of efficiency for the power converter reliability,...
This paper presents a field programmable gate array (FPGA) implementation of a digital circuit that measures in real-time the first harmonic load impedance of medium-frequency (25 kHz-70 kHz) induction heating cooking appliances. The load impedance of a planar inductor coupled to a pan depends on the geometry, pan material, temperature, and frequency. Real-time load measurement is desirable for a...
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