A 3.6kW single-ended resonant inverter for induction heating applications

Yeon, Jae-Eul; Cho, Kyu-Min; Kim, Hee‐Jun

doi:10.1109/epe.2015.7309110

Cited by 19 publications

(7 citation statements)

References 5 publications

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“…If the dead-time effect is neglected, the resonant current i r during the natural resonant period can be derived as follows [20,21,[33][34][35]:…”

Section: Estimation Methods For Equivalent Impedancementioning

confidence: 99%

Load Estimation for Induction Heating Cookers Based on Series RLC Natural Resonant Current

Huang

et al. 2022

Energies

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In domestic induction heating applications, cookware can be considered an equivalent load in a series resistor–inductor–capacitor resonant converter. Therefore, the electrical parameters of an equivalent circuit change according to the cookware material, size and the cookware position on the heating coil. This study proposes an online estimation method for detecting the cookware status, determining the material and estimating the equivalent heating resistance of cookware on an induction heating cooker (IHC) for power control. The proposed method could turn off the circuit in abnormal situations such as low equivalent heating coverage rate or non-ferromagnetic cookware and adjust the power in normal situations. In the method, a half-bridge series resonant converter (HBSRC) generates two test patterns with three resonant voltage pulses to detect cookware every 10 ms, only the current feedback information is needed to avoid the calculation loads and times necessary for complex signal operations in software. To verify the proposed method, a digital signal processor based HBSRC with 1000 W was constructed. The maximum errors between the estimated and measured resistance and inductance were 7.14% and 2.91%, respectively. Moreover, power control in emulated user operation reveal that the proposed method and control system can effectively estimate load online to detect cookware status and determine whether to turn off or vary the heating power for an IHC.

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“…If the dead-time effect is neglected, the resonant current i r during the natural resonant period can be derived as follows [20,21,[33][34][35]:…”

Section: Estimation Methods For Equivalent Impedancementioning

confidence: 99%

Load Estimation for Induction Heating Cookers Based on Series RLC Natural Resonant Current

Huang

et al. 2022

Energies

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“…There are different types of circuit topology for IH applications. Most of them are categorized as full-bridge inverters [5,6], half-bridge inverters [7][8][9][10][11], resonant single-ended inverters [12] and inverters employing active voltage clamping [13]. The half-bridge inverters are widely used for IH applications due to their cost effectiveness and robustness.…”

Section: Introductionmentioning

confidence: 99%

Simple Lossless Inductive Snubbers-Assisted Series Load Resonant Inverter Operating under ZCS-PDM Scheme for High-Frequency Induction Heating Fixed Roller

et al. 2022

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This paper presents a high-frequency pulse-density-modulated (PDM) soft-switching series load resonant inverter for use in induction heating (IH) fixed roller applications, which is used in copy and printing machines. The proposed simple high-frequency resonant inverter uses an asymmetrical pulse pattern PDM control scheme to achieve complete zero-current soft-switching commutations over a wide output range of input power regulation. Additionally, when the printer toner requires operation in very light load conditions, this causes difficulty in achieving zero-voltage or zero-current soft-switching operations in the IH high-frequency resonant inverters with pulse frequency modulation or pulse width modulation control schemes. The proposed resonant inverter demonstrates the capability to accomplish highly efficient power conversions. In this work, a fixed roller for printing machines is developed for doing experiments to verify the efficiency of the proposed circuit topology and its PDM control schemes. The inverter’s steady-state and transient operating principles are analyzed based on the proposed control strategy at a high-frequency PDM. Operating conditions such as power loss analysis, power conversion efficiency and temperature rise characteristics of the proposed inverter are presented and analyzed through experimental results. Finally, from a practical viewpoint, a comparative study of a conventional halogen lamp heater and the proposed IH fixed roller is deliberated.

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“…Several approaches have been prospected in recent years in order to obtain low-device-count multi-output structures. Some of the most relevant are the single-switch topologies [14,15], multiple variants of the half-bridge [16][17][18][19], that may include inductor clustering [20], or matrix-based topologies [21].…”

Section: Introductionmentioning

confidence: 99%

Asymmetrical Noncomplementary Modulation Strategies for Independent Power Control in Multioutput Resonant Inverters

Guillén

Sarnago

Lucía

et al. 2021

IEEE J. Emerg. Sel. Topics Power Electron.

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Domestic induction heating design trends aim at improving user experience by increasing the cooking surface flexibility while maintaining a cost-effective implementation. The design of multi-output topologies is a key development for this purpose. However, due to their complexity, output power control usually relies on low-frequency pulse density modulations which, in addition to the slow response due to significant power averaging times, presents severe restrictions as a consequence of power pulsation regulations. This paper proposes two different noncomplementary asymmetrical modulation strategies that allow continuous operation avoiding both flicker and heating performance issues, and obtaining a fast-response load power control. In order to prove the feasibility of the proposed modulations, a prototype featuring 12 induction heating loads of 2000 W maximum rated power has been built, and both strategies have been tested.

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A 3.6kW single-ended resonant inverter for induction heating applications

Cited by 19 publications

References 5 publications

Load Estimation for Induction Heating Cookers Based on Series RLC Natural Resonant Current

Load Estimation for Induction Heating Cookers Based on Series RLC Natural Resonant Current

Simple Lossless Inductive Snubbers-Assisted Series Load Resonant Inverter Operating under ZCS-PDM Scheme for High-Frequency Induction Heating Fixed Roller

Asymmetrical Noncomplementary Modulation Strategies for Independent Power Control in Multioutput Resonant Inverters

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