Class-D/DE dual-mode-operation resonant converter for improved-efficiency domestic induction heating system

Sarnago, Hector ; Lucía, Óscar (Universidad de Zaragoza) ; Mediano, Arturo (Universidad de Zaragoza) ; Burdío, José Miguel (Universidad de Zaragoza)

Resumen: Induction heating (IH) technology is nowadays widely present in domestic appliances because of its cleanness, high efficiency,
and faster heating process. All of these advantages are due to its heating process, where the pot is directly heated by the induced currents generatedwith a varyingmagnetic field.As a result, the glass where the pot is supported is not directly heated and, consequently, efficiency and heating times are improved. IH systems are based on dc-link inverters to generate the required alternating current to feed the inductor. Usually, resonant converters are used to achieve higher efficiencies and power densities. In such systems, themaximum output power and efficiency are achieved at the resonant frequency, and the switching frequency is increased to reduce the output power. As a consequence, in these converters, the efficiency is also reduced in the low-medium output power range. This paper proposes the use of the half-bridge inverter in two operating modes to achieve higher efficiency in a wide output power range. The power converter topology can be reconfigured by changing the resonant capacitors through electromechanical relays. As a consequence, the entire efficiency of the cooking process is improved with a cost-effective procedure.

Idioma: Inglés

DOI: 10.1109/TPEL.2012.2206405

Año: 2013

Publicado en: IEEE Transactions on Power Electronics 28, 3 (2013), 1274-85
ISSN: 0885-8993

Factor impacto JCR: 5.726 (2013)

Categ. JCR: ENGINEERING, ELECTRICAL & ELECTRONIC rank: 4 / 246 = 0.016 (2013) - Q1 - T1

Tipo y forma: Artículo (PostPrint)

Área (Departamento): Área Tecnología Electrónica (Dpto. Ingeniería Electrón.Com.)