Efficiency-Oriented Design of ZVS Half-Bridge Series Resonant Inverter With Variable Frequency Duty Cycle Control

Lucía, Óscar; Burdío, J.M.; Millán, I.; Acero, J.; Barragán, L.A.

doi:10.1109/tpel.2010.2042461

Cited by 173 publications

(68 citation statements)

References 12 publications

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“…Throughout the process, losses take place at every conversion stage. Intensive research has been carried out in the optimization of the converter with new topologies [7] and digital modulation strategies [8,9]. The efficiency in the converter is defined, as usual, as the output power divided by the input power.…”

Section: Introductionmentioning

confidence: 99%

Design and Implementation of a Test-Bench for Efficiency Measurement of Domestic Induction Heating Appliances

et al. 2016

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Abstract:The operation of a domestic induction cooktop is based on the wireless energy transfer from the inductor to the pot. In such systems, the induction efficiency is defined as the ratio between the power delivered to the pot and the consumed power from the supplying converter. The non-transferred power is dissipated in the inductor, raising its temperature. Most efficiency-measuring methods are based on measuring the effective power (pot) and the total power (converter output). While the converter output power is directly measurable, the measurement of the power dissipation in the pot is usually a cause of inaccuracy. In this work, an alternative method to measure the system's efficiency is proposed and implemented. The method is based on a pot with a reversible base to which the inductor is attached. In the standard configuration, the inductor is placed below the pot in such a way that the delivered power is used to boil water, and the power losses are dissipated to the air. When the pot base is flipped, the inductor is immersed into the water. In this case the losses in the inductor also contribute to heating up and boiling the water. The induction efficiency is calculated from the boiling rates in both configurations. A commercial inductor was tested under real working conditions with consistent results.

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Section: Introductionmentioning

confidence: 99%

Design and Implementation of a Test-Bench for Efficiency Measurement of Domestic Induction Heating Appliances

et al. 2016

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“…There is voltage and current fed high frequency AC (HFAC) inverters to transfer high power to the load. Different inverter topologies such as half bridge, full bridge, and single switch have been proposed for IH applications (Lucia, Burdio, Millan, Acero & Barragán, 2010;Park, Lee, & Hyun, 2007;Booma & Ramareddy, 2013). The choice of topology is mainly based on the cost and performance for specific application.…”

Section: Introductionmentioning

confidence: 99%

<b>Pulse Mask Controlled HFAC Resonant Converter for high efficiency Industrial Induction Heating with less harmonic distortion

Nagarajan¹,

Ramareddy²

2016

Acta Sci. Technol.

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ABSTRACT. This paper discusses about the fixed frequency pulse mask control based high frequency AC conversion circuit for industrial induction heating applications. Conventionally, for induction heating load, the output power control is achieved using the pulse with modulation based converters. The conventional converters do not guarantee the zero voltage switching condition required for the minimization of the switching losses. In this paper, pulse mask control scheme for the power control of induction heating load is proposed. This power control strategy allows the inverter to operate closer to the resonant frequency, to obtain zero voltage switching condition. The proposed high frequency AC power conversion circuit has lesser total harmonic distortion in the supply side. Modeling of the IH load, design of conversion circuit and principle of the control scheme and its implementation using low cost PIC controller are briefly discussed. Simulation results obtained using the Matlab environment are presented to illustrate the effectiveness of the pulse mask scheme. The obtained results indicate the reduction in losses, improvement in the output power and lesser harmonic distortion in the supply side by the proposed converter. The hardware results are in good agreement with the simulation results.

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“…Variable frequency control is a basic method which is used for variable load conditions. Variable frequency control is used for half bridge and full bridge SRIs [9]. However, pulse frequency modulation control causes many problems since the switching frequency has to be varied over a wide range to accommodate the worst combinations of loads.…”

Section: Introductionmentioning

confidence: 99%

Phase Locked Loop based Pulse Density Modulation Scheme for the Power Control of Induction Heating Applications

Nagarajan¹,

Sathi²

2015

Journal of Power Electronics

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Resonant converters are well suited for induction heating (IH) applications due to their advantages such as efficiency and power density. The control systems of these appliances should provide smooth and wide power control with fewer losses. In this paper, a simple phase locked loop (PLL) based variable duty cycle (VDC) pulse density modulation (PDM) power control scheme for use in class-D inverters for IH loads is proposed. This VDC PDM control method provides a wide power control range. This control scheme also achieves stable and efficient Zero-Voltage-Switching (ZVS) operation over a wide load range. Analysis and modeling of an IH load is done to perform a time domain simulation. The design and output power analysis of a class-D inverter are done for both the conventional pulse width modulation (PWM) and the proposed PLL based VDC PDM methods. The control principles of the proposed method are described in detail. The validity of the proposed control scheme is verified through MATLAB simulations. The PLL loop maintains operation closer to the resonant frequency irrespective of variations in the load parameters. The proposed control scheme provides a linear output power variation to simplify the control logic. A prototype of the class-D inverter system is implemented to validate the simulation results.

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Efficiency-Oriented Design of ZVS Half-Bridge Series Resonant Inverter With Variable Frequency Duty Cycle Control

Cited by 173 publications

References 12 publications

Design and Implementation of a Test-Bench for Efficiency Measurement of Domestic Induction Heating Appliances

Design and Implementation of a Test-Bench for Efficiency Measurement of Domestic Induction Heating Appliances

<b>Pulse Mask Controlled HFAC Resonant Converter for high efficiency Industrial Induction Heating with less harmonic distortion

Phase Locked Loop based Pulse Density Modulation Scheme for the Power Control of Induction Heating Applications

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