EPE Association: EPE 2011 - LS7d: Topic 04: Resonant converters Topologies for Induction Heating

EPE 2011 - LS7d: Topic 04: Resonant converters Topologies for Induction Heating
You are here: EPE Documents > 01 - EPE & EPE ECCE Conference Proceedings > EPE 2011 ECCE Europe - Conference > EPE 2011 - Topic 04: Soft Switching Converters and Control > EPE 2011 - LS7d: Topic 04: Resonant converters Topologies for Induction Heating

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   A New Multiple Coils Topology For Domestic Induction Cooking System
By Magdy SAOUDI, Diego PUYAL, Daniel ANTON, Arturo MEDIANO, Héctor SARNAGO [View]
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Abstract: This work is intended to describe a novel topology for a class E oscillator for induction heating in cooking applications. The topology is remarkable for low cost, low size and medium-high power applications where efficiency is a must. Experimental results for a 900W (92\% efficiency) prototype are included.Multiple-burner induction cooking system including three or four inductors is widely present in the current technology. A novel multiple coils topology is proposed to obtain a cost effective, high efficiency, high utilization factor of electronics, sharing of the power converters, and reduction in the system components. The topology based on two half bridge inverters and they are multiplexed for feeding four loads using six SPDT (single pole double throw electromechanical relay), also the same topology is configured for feeding three coils using four SPDT relays. The operation modes and the control strategies are explained; also the main benefits of the proposed system are discussed in details. The proposed topology is designed and tested experimentally with a prototype for induction cooking system.

   A New Topology of Direct AC to AC Converter with Soft-Switching Based on a MERS Pulse Link Concept
By Yohei OTANI, Takanori ISOBE, Ryuichi SHIMADA [View]
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Abstract: This paper proposes a direct ac/ac converter without large smoothing capacitor. The first stage of the converter is a rectifier which generates a high frequency pulse voltage from an ac source. The second stage is a inverter which generates an ac voltage from the pulse voltage. The proposed converter does not have smoothing capacitor between the rectifier and inverter but has a drastically reduced capacitor size which is used for resonance in short switching cycle. Another advantage of the proposed converter is soft-switching operation of both the rectifier and inverter side. However, strict control of power flow is needed since there is no energy buffer between the rectifier and inverter. Thus, this paper also describes a basic control principle of the proposed converter and experimental results with a small scale setup.

   A novel class E RF self-oscillating topology for induction heating applications
By Héctor SARNAGO, Arturo MEDIANO, Daniel PALACIOS, Alfonso SANTOLARIA [View]
[Download]

Abstract: This paper describes a novel topology for a class E oscillator applied to induction heating in cooking applications. for the main benefits of the proposed topology are the low cost, low size and medium-high power applications where high efficiency is mandatory. It only uses one active device, and no logic control is required. Therefore power supply requirements as well as isolation between power and control are avoided. This proposal is intended for a fixed output power application, such as rice cookers or coffee machines.The proposed topology has been designed and tested for a domestic induction heating load. Experimental results as well as key waveforms for a 900W featuring 92\% efficiency are included.

EPE 2011 - LS7d: Topic 04: Resonant converters Topologies for Induction Heating
You are here: EPE Documents > 01 - EPE & EPE ECCE Conference Proceedings > EPE 2011 ECCE Europe - Conference > EPE 2011 - Topic 04: Soft Switching Converters and Control > EPE 2011 - LS7d: Topic 04: Resonant converters Topologies for Induction Heating
	[return to parent folder]

	A New Multiple Coils Topology For Domestic Induction Cooking System By Magdy SAOUDI, Diego PUYAL, Daniel ANTON, Arturo MEDIANO, Héctor SARNAGO	[View] [Download]
Abstract: This work is intended to describe a novel topology for a class E oscillator for induction heating in cooking applications. The topology is remarkable for low cost, low size and medium-high power applications where efficiency is a must. Experimental results for a 900W (92\% efficiency) prototype are included.Multiple-burner induction cooking system including three or four inductors is widely present in the current technology. A novel multiple coils topology is proposed to obtain a cost effective, high efficiency, high utilization factor of electronics, sharing of the power converters, and reduction in the system components. The topology based on two half bridge inverters and they are multiplexed for feeding four loads using six SPDT (single pole double throw electromechanical relay), also the same topology is configured for feeding three coils using four SPDT relays. The operation modes and the control strategies are explained; also the main benefits of the proposed system are discussed in details. The proposed topology is designed and tested experimentally with a prototype for induction cooking system.

	A New Topology of Direct AC to AC Converter with Soft-Switching Based on a MERS Pulse Link Concept By Yohei OTANI, Takanori ISOBE, Ryuichi SHIMADA	[View] [Download]
Abstract: This paper proposes a direct ac/ac converter without large smoothing capacitor. The first stage of the converter is a rectifier which generates a high frequency pulse voltage from an ac source. The second stage is a inverter which generates an ac voltage from the pulse voltage. The proposed converter does not have smoothing capacitor between the rectifier and inverter but has a drastically reduced capacitor size which is used for resonance in short switching cycle. Another advantage of the proposed converter is soft-switching operation of both the rectifier and inverter side. However, strict control of power flow is needed since there is no energy buffer between the rectifier and inverter. Thus, this paper also describes a basic control principle of the proposed converter and experimental results with a small scale setup.

	A novel class E RF self-oscillating topology for induction heating applications By Héctor SARNAGO, Arturo MEDIANO, Daniel PALACIOS, Alfonso SANTOLARIA	[View] [Download]
Abstract: This paper describes a novel topology for a class E oscillator applied to induction heating in cooking applications. for the main benefits of the proposed topology are the low cost, low size and medium-high power applications where high efficiency is mandatory. It only uses one active device, and no logic control is required. Therefore power supply requirements as well as isolation between power and control are avoided. This proposal is intended for a fixed output power application, such as rice cookers or coffee machines.The proposed topology has been designed and tested for a domestic induction heating load. Experimental results as well as key waveforms for a 900W featuring 92\% efficiency are included.