Inverse-Based Power Control in Domestic Induction-Heating Applications

Domínguez, A.; Barragán, L.A.; Otín, A.; Navarro, D.; Puyal, D.

doi:10.1109/tie.2013.2281155

Cited by 23 publications

(18 citation statements)

References 21 publications

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“…For the considered topology, a PSO-gradient based power control was presented in [5]. This paper extends the reported work in [4] for the considered topology, Fig.1.a, improving the controller performance presented in [5].…”

Section: Introductionsupporting

confidence: 76%

“…The (s) estimation has been done by considering fixed perturbations of kHz 5 . The model validity range and therefore the slope of the prefilter K r (s) has been established to be 50 W, considering the worst case of a wide range of induction loads in simulation [4]. This conservative range prevents high controller gains associated to wrong transfer matrix estimation due to measurement errors and local linearity assumptions.…”

Section: Simulation and Experimental Resultsmentioning

confidence: 99%

“…However, this assumption leads to a really conservative strategy increasing the settling time. In [4], an inverse-based power controller for a single half-bridge features a fast settling time and robust performance. For the considered topology, a PSO-gradient based power control was presented in [5].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Decoupling output power control of two series resonant inverters sharing resonant capacitor for domestic induction heating

Domínguez

Barragán

Otín

et al. 2014

2014 IEEE 15th Workshop on Control and Modeling for Power Electronics (COMPEL)

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Domestic induction heating applications require an accurate control of the power delivered to the vessel to be heated, ensuring power topology operation under safety conditions. Particularly, this paper is focused on applying a power control of two induction heating loads in a dual-half bridge sharing a common resonant capacitor. This topology leads to a control strategy harder than the classical arrangement which features a dedicated resonant capacitor. A Phase Shift Square Wave Modulation (PSSWM) is performed to control the output powers of the vessels to be heated. Thus, the considered plant is a twoinput two-output (TITO) system. The two control inputs are (f sw , ) and the two outputs are (P 1 , P 2 ). Since the transfer function matrix is not diagonal, the Relative Gain Array (RGA) methodology is used to analyze if a multi-loop control is feasible. Due to the fact that the system is strongly coupled a centralized control must be applied. Therefore, the aim of the paper is to apply a decoupling control to handle the interactions. Simulation and experimental results in an induction heating prototype are performed in order to validate the proposed control technique.

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Section: Introductionsupporting

confidence: 76%

Section: Simulation and Experimental Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Decoupling output power control of two series resonant inverters sharing resonant capacitor for domestic induction heating

Domínguez

Barragán

Otín

et al. 2014

2014 IEEE 15th Workshop on Control and Modeling for Power Electronics (COMPEL)

View full text Add to dashboard Cite

show abstract

“…In this case, load adaptive operating frequency using phase locked loop, or slightly higher than resonance frequency are generally applied, in order to achieve inverter soft switching, and hence higher efficiency and power density [4-6-10-11-17]. In the present paper, the work focuses mainly on assessment of the control techniques over a large temperature variation and consequently power range, hence, load adaptation control is not considered at this stage in the present work in order to carry out a comprehensive and fair performance comparison [15][16]. In this case, and to highlight the contribution of this work, an experimental system has been built at low power to keep the cost at minimum, and to be able to conduct a thorough investigation into the system performance which appears later to be consistent and allows their prediction over a wide power range according to industrial standards criteria.…”

Section: Introductionmentioning

confidence: 99%

Comprehensive Power Control Performance Investigations of Resonant Inverter for Induction Metal Surface Hardening

Meziane

Zeroug

2016

IEEE Trans. Ind. Electron.

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Many types of steel are treated with heat to increase toughness and resistance to wear. Induction heating seems to be appropriate and provides several advantages in comparison with conventional techniques. In this paper, control techniques for full bridge resonant inverter aimed to induction heating are evaluated comprehensively, through simulation and experiment, and compared to each other in terms of heating rate, efficiency and input power factor, using one metal sample hardened to 1mm in depth up to 600°C, with a 400 W power supply. These techniques are implemented digitally in way to allow a high resolution power control. The simulation results obtained are satisfactory, and agree with those of the experiments. Furthermore, the study shows the control strategy based on frequency may not be sufficient, but should be associated with other control techniques in order to address appropriately the hardening process, bearing in mind processing time, efficiency and input power factor. The strategy with the input DC voltage and the pulse density modulation (PDM) controls appear to suit the surface metal treating for large temperature variation, and enable the heating process to perform well when compared to the other techniques based on phaseshift and PWM duty cycle control.

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“…A hybrid fixed frequency current controller suitable for DCDC Applications that uses both the turn-on and the turn-off current mode and the sliding mode control techniques is presented in [4]. A power controller for dealing with load uncertainties in domestic induction-heating applications is proposed in [5]. It combines different variable frequency PWM strategies -constant duty cycle, constant on-time, and constant off-time modulationsfor reaching the target power level while minimizing the switching frequency.…”

Section: Introductionmentioning

confidence: 99%

A simplified controller and detailed dynamics of constant off-time peak current control

Bossche

Dimitrova

Valchev

et al. 2017

Journal of Electrical Engineering

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A fast and reliable current control is often the base of power electronic converters. The traditional constant frequency peak control is unstable above 50 % duty ratio. In contrast, the constant off-time peak current control (COTCC) is unconditionally stable and fast, so it is worth analyzing it. Another feature of the COTCC is that one can combine a current control together with a current protection. The time dynamics show a zero-transient response, even when the inductor changes in a wide range. It can also be modeled as a special transfer function for all frequencies. The article shows also that it can be implemented in a simple analog circuit using a wide temperature range IC, such as the LM2903, which is compatible with PV conversion and automotive temperature range. Experiments are done using a 3 kW step-up converter. A drawback is still that the principle does not easily fit in usual digital controllers up to now. K e y w o r d s: analog processing circuits, circuit analysis, circuit simulation and modelling, current control, PV conversion

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Inverse-Based Power Control in Domestic Induction-Heating Applications

Cited by 23 publications

References 21 publications

Decoupling output power control of two series resonant inverters sharing resonant capacitor for domestic induction heating

Decoupling output power control of two series resonant inverters sharing resonant capacitor for domestic induction heating

Comprehensive Power Control Performance Investigations of Resonant Inverter for Induction Metal Surface Hardening

A simplified controller and detailed dynamics of constant off-time peak current control

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