A soft switching class D current source inverter for induction heating with ferromagnetic load

Polsripim, Apisak; Chudjuarjeen, Saichol; Sangswang, Anawach; Ayudhya, Piyasawat Navaratana Na; Koompai, Chayant

doi:10.1109/peds.2009.5385898

Cited by 7 publications

(2 citation statements)

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“…The appropriate temperature of the entire workpiece must be reached during the heating process. A magnetic field is formed around the coil as electric current flows through it and then reversed according to the frequency of the alternating current [2][3][4][5][6]. Furthermore, the magnetic field cuts through the iron in reverse polarity when Manuscript received on September 1, 2021; revised on October 16, 2021; accepted on October 19, 2021.…”

Section: Introductionmentioning

confidence: 99%

“…It can modify the output power of the induction cooker by altering the asymmetrical control using the duty cycle PWM control signal, while the switch operates under ZVS conditions, thereby reducing circuit switch loss. Chudjuarjeen proposed an LLC resonant inverter for induction heating applications with asymmetrical control [5][6]. An asymmetrical control technique with a phase-locked loop can be used to manage the switching frequency and phase current.…”

Section: Introductionmentioning

confidence: 99%

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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%

Section: Introductionmentioning

confidence: 99%