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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...
Induction heating has evolved in recent years towards flexible cooking surfaces with multiple control possibilities. This paper reviews the series resonant multi-inverter topology as a versatile and cost-effective solution for multi-load induction heating systems and analyzes pulse density modulated control strategies with a special focus on the EMC behavior. The main control strategies are explained...
Magnetic hyperthermia is a promising cancer treatment technique based on selectively heating cancer cells to cause their death using the induction heating principles. In order to optimize the magnetic field generator, this paper proposes the design of a high-frequency high-power density inverter taking advantage of the recently developed high-voltage GaN devices and using an insulated metal substrate...
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...
Domestic induction heating enables the pot to be heated directly, reducing heating times and avoiding high-temperature points, increasing safety and cleanliness in the cooking process. In addition, the energy consumption is minimized, reducing the environmental impact. To achieve this, a high frequency current generator is necessary in order to generate the required ac-magnetic field. The efficiency...
Resonant converters featuring soft switch on transitions are commonly used in the domestic induction heating application. In this paper, the design and implementation procedure of a high efficiency and high power density resonant inverter for induction heating applications is presented. The proposed converter is based on a multi-MOSFET cell implementation, and the main design challenges including...
Efficiency is a key design parameter for domestic induction heating systems. To achieve this aim, resonant converters featuring soft switch on transitions are commonly used. In this paper, a cost-effective active snubber circuit is proposed to optimize the switch off transition. This allows the converter to operate under a wide range of operating conditions, with optimized asymmetrical control strategies,...
One of the most important features of classical induction heaters is the efficiency. Efficiency, defined as the output-input power ratio is directly related with these terms: environmental impact, the total amount of energy required in the cooking process is reduced as efficiency increases; device stress, efficiency determines the amount of dissipated power, and thus, determines the temperature stress...
Induction heating (IH) technology is nowadays widely present in domestic appliances because of its cleanness, high efficiency, and faster heating times. All of these advantages are due to its heating process, where the pot is directly heated by a varying magnetic field. As a result, the glass where the pot is supported is not directly heated and, consequently, efficiency and heating times are improved...
The use of resonant converters in high-frequency and high-efficiency power converters is widespread. Recent developments in wide bandgap materials, such as silicon carbide and gallium nitride, and their commercial availability, are boosting their use in power converters. Proposed is a reduced component-count gate drive circuit for the zero voltage switching operation of resonant converters featuring...
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