A variable-frequency asymmetrical voltage-cancellation control of series resonant inverters in domestic induction cooking

Jittakort, Jirapong; Yachiangkam, Samart; Sangswang, Anawach; Naetiladdanon, Sumate; Koompai, Chayant; Chudjuarjeen, Saichol

doi:10.1109/icpe.2011.5944488

Cited by 16 publications

(6 citation statements)

References 31 publications

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“…Two types of inverters are installed into high frequency induction heaters: voltage source and current source. In the past, series and parallel resonant inverter circuits were used in conjunction with half-bridge and full-bridge to reduce switching loss and increase circuit efficiency [7][8][9][10][11][12][13][14][15][16][17].…”

Section: Introductionmentioning

confidence: 99%

Application of Frequency Control Techniques for Hot Tensile Testing in Induction Heating

Chudjuarjeen

Phankong

2022

ECTI-EEC

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This paper proposes the frequency control technique using a half-bridge resonance inverter for hot tensile testing in induction heating. The technique involves power regulation, high frequency pulse, frequency adjustment, and pulse generator controller based on the dsPIC33FJ16GS404 chip IC. Significantly, the inverter is controlled by two sections. Throughout the heating cycle, the first controller retains the inverter's operating frequency slightly above the resonant frequency, while the second keeps the phase angle of the current and voltage output in check to control the output power at a level suitable for changes in the tensile parameter workpieces. As a result, the inverter improves the efficiency of the prototype, which has 1.5 kW input power. Furthermore, it can heat three different sizes of steel workpieces for hot tensile testing, with diameters of approximately 3, 5, and 10 mm and lengths of approximately 50 and 70 mm, respectively.

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Section: Introductionmentioning

confidence: 99%

Application of Frequency Control Techniques for Hot Tensile Testing in Induction Heating

Chudjuarjeen

Phankong

2022

ECTI-EEC

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“…However a variable frequency approach has disadvantages such as the increase of reactive power. In [10] a variable frequency asymmetrical voltage cancellation control of series resonant inverters is proposed. It ensures ZVS operation by varying the switching frequency.…”

Section: Introductionmentioning

confidence: 99%

“…Apart from a fixed frequency operation of the HFI it is possible to use variable frequency controllers to control the output power as described in [8][9][10]. In [9] an energy transmission system for an artificial heart is designed.…”

Section: Introductionmentioning

confidence: 99%

Load dependent power control in series-series compensated electric vehicle inductive power transfer systems

Petersen¹,

Fuchs²

2014

2014 16th European Conference on Power Electronics and Applications

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In inductive battery charging systems for electric vehicles the power flow to the battery has to be controlled according to the battery state of charge (SOC), the magnetic coupling between primary and secondary side and other operation parameters. It is well known that the output power can be controlled by fixed frequency or variable frequency techniques applied to the high-frequency inverter (HFI). Furthermore an additional DC/DC converter can be used to adjust the input voltage of the HFI. These three techniques are analyzed and compared by theory and laboratory measurement. It results in using an additional DC/DC converter is the best option with the best efficiency at full load. Nevertheless this technique has the highest component count and therefore the highest costs. Another technique is Asymmetric Dutycycle Control (ADC) which reaches the second best efficiency. In contrast to DC/DC converter control there is no need for additional components making this technique a good choice. Furthermore this analysis reveals that Symmetric Dutycycle Control (SDC) and Phase Shift Control (PSC) as well as Variable Frequency Control (VFC) techniques cannot compete in terms of efficiency.

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“…A phase-locked loop is employed to ensure the ZVS operation under load-parameter variation. In [ 14] , the AVC control with the variable-frequency control is used in a fullbridge resonant inverter to identify the ZVS operation by the fundamental harmonic approximation method. However, this may not guarantee ZVS operation over all ranges of power.…”

Section: Introductionmentioning

confidence: 99%

A comparison of asymmetrical control strategies for domestic induction cooking applications with low-quality factor loads

Yachiangkam

Sangswang

Naetiladdanon

2016

2016 13th International Conference on Electrical Engineering/Electronics, Computer, Telecommunications and Information Technolo

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This paper presents a comparison of two control strategies between the fixed-frequency method and the variablefrequency method for output power control of a full-bridge resonant inverter in domestic induction cooking to address an issue of the distorted load current due to low-quality-factor load. The control strategies are based on the asymmetrical control using positive half-cycle control while operating under zerovoltage-switching (ZVS) and non-zero-voltage-switching (NON-ZVS) conditions. Load characteristics of different types of cooking materials are analyzed. The variable-frequency method can improve the inverter efficiency over all ranges of power compared with the fixed-frequency method due to reduction of the switching losses in the devices of inverter. The functionality and benefits of the proposed control strategies are verified through the experimental results.

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A variable-frequency asymmetrical voltage-cancellation control of series resonant inverters in domestic induction cooking

Cited by 16 publications

References 31 publications

Application of Frequency Control Techniques for Hot Tensile Testing in Induction Heating

Application of Frequency Control Techniques for Hot Tensile Testing in Induction Heating

Load dependent power control in series-series compensated electric vehicle inductive power transfer systems

A comparison of asymmetrical control strategies for domestic induction cooking applications with low-quality factor loads

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