All-digital DSP-based phase-locked loop for induction heating applications

Segura, Guillermo Martín; Sala-Perez, P.; Lopez-Mestre, Joaquim; Bergas‐Jané, Joan; Montesinos‐Miracle, Daniel

doi:10.1002/etep.1640

Cited by 8 publications

(6 citation statements)

References 14 publications

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“…Induction heating (IH) is widely used in domestic, industrial and medical applications, as it exhibits characteristics such as cleanliness, non‐contact heating, safety, higher efficiency, higher power density and accurate power control 1,2 . IH is based on the electromagnetic phenomenon in which heat is developed in the target (load) by eddy current loss and hysteresis loss 3‐5 . The level of penetration of heat on a load depends on the skin depth of the material 6 .…”

Section: Introductionmentioning

confidence: 99%

A simple multi‐frequency multiload independent power control using pulse density modulation scheme for cooking applications

Vishnuram

Gunabalan

2021

Int Trans Electr Energ Syst

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Summary Induction heating applications aided by power electronic control have become very attractive in the recent past. For cooking applications, power electronics circuits need to feed power to multi loads with a suitable control technique. The induction heating system requires a superlative converter topology and independent control to deliver power to multi loads. The main idea of this research work is to develop a dual‐frequency half‐bridge series resonant high‐frequency inverter feeding power for multi loads independently. A pulse density modulation (PDM) control technique is used to control the output power independently. The inverter simultaneously powers both loads with constant switching frequency. The proposed system is simulated in MATLAB/Simulink and thermal analysis is carried out in COMSOL multi‐physics software. A 1 kW prototype experimental set up is developed to feed power to dual load with the switching frequencies of 20 and 80 kHz for load 1 and load 2, respectively. The experimental results are provided to validate the system performance for various duty cycles of the PDM signal. The simulation and experimental results are in good agreement. The efficient power control is accomplished by varying the density of the switching pulses.

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Section: Introductionmentioning

confidence: 99%

A simple multi‐frequency multiload independent power control using pulse density modulation scheme for cooking applications

Vishnuram

Gunabalan

2021

Int Trans Electr Energ Syst

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“…In this inverter, the conventionally available 50 Hz AC supply is converted into HF current to generate more eddy current. The inverter topologies generally used for IH applications are single switch (SS) resonant inverter (Vishnuram et al , 2020) (Zerouali et al , 2013), half bridge (HB) inverter (Naval et al , 2017; Nagarajan and Sathi, 2019) and full bridge (FB) resonant inverter (Martin Segura et al , 2013; Meziane and Zeroug, 2016). In some topologies, the output power is controlled by varying the switching frequency (Zerouali et al , 2013; Nagarajan and Sathi, 2019; Meziane and Zeroug, 2016).…”

Section: Introductionmentioning

confidence: 99%

Pulse density modulation control-based multi-load handling three leg inverter for cooking applications

Vishnuram

Gunabalan

2022

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Purpose Induction heating applications aided by power electronic control have become very attractive in the recent past. For cooking applications, power electronics circuits are very suitable to feed power to multi loads with an appropriate control technique. The purpose of this paper is to develop a three leg inverter to feed power to three loads simultaneously and independently. Design/methodology/approach Pulse density modulation control technique is used to control the output power independently with constant switching frequency. Findings Multi-load handling converter with independent power control is achieved with reduced number of switching devices (two switches/per load) with simple control strategy. Originality/value The proposed system is simulated in MATLAB/Simulink, and the thermal analysis is carried out in COMSOL multi-physics software. The hardware realisation is performed for a 1 kW prototype with 20 kHz switching frequency and 10 kHz pulse density modulation frequency. PIC16F877A microcontroller is used to validate the experimental results for various values of control signals (DPDM). The simulation and experimental results are in good agreement and validates the developed system.

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“…To ensure the ZVS and ZCS operation of the SRI transistors, it is necessary to provide a certain value of the dead-time between the control signals of the SRI transistors. It should be noted that most authors carry out a mathematical analysis of the SRI output current, taking into account only the first harmonic of the square-wave output voltage of the SRI, and the obtained expressions are used to determine the minimum value of the dead-time [10,13,15,[22][23][24][25]. However, with a low value of the quality factor, using this approach can lead to a significant error in determining the value of the dead-time.…”

Section: Introductionmentioning

confidence: 99%

Study of the suitable value of dead-time between control signals of transistors for a series-resonant inverter with phase-shift control in induction heating systems

Herasymenko

2021

Eureka: PE

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Induction heating provides contactless, energy-efficient, accurate, and fast heating of electrically conductive materials. Due to its advantages, IH is increasingly used in different fields such as industry, medicine, and the household sector. High-frequency transistor converters for the induction heating system are often based on series-resonant inverters. This paper analyzes a phase-shift-controlled voltage-source series-resonant inverter for induction heating systems. Mathematical analysis was performed in order to obtain the expressions that describe the output current of the phase-shift-controlled series-resonant inverter in the steady-state mode. Based on the analysis and the obtained expressions of the output current, analytical expressions of the dead-time between the transistors’ control signals of the SRI are obtained. The analytical expressions for determining the value of the dead-time are obtained for two cases: 1) zero value of the phase-shift; 2) the phase shift is greater than zero. To verify the obtained analytical expressions of the output current, validation was performed in the MATLAB/Simulink environment by comparing the peak current values. The verification showed the high accuracy of the obtained expressions, the deviation between the calculated and simulated values of the peak current is less than 0.1 %. The made simplifications of the dead-time expressions also were verified by calculation, the deviation between the calculated values of the drain-to-source voltage at the end of the commutation and the expected value is no more than 3.6 %. The SRI prototype has been designed and implemented in order to validate the analytical and simulation results

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All-digital DSP-based phase-locked loop for induction heating applications

Cited by 8 publications

References 14 publications

A simple multi‐frequency multiload independent power control using pulse density modulation scheme for cooking applications

A simple multi‐frequency multiload independent power control using pulse density modulation scheme for cooking applications

Pulse density modulation control-based multi-load handling three leg inverter for cooking applications

Study of the suitable value of dead-time between control signals of transistors for a series-resonant inverter with phase-shift control in induction heating systems

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