Small-signal model of dual half-bridge series resonant inverter sharing resonant capacitor for domestic induction heating

Domínguez, A.; Barragán, L.A.; Otín, A.; Artigas, J.I.; Urriza, I.; Navarro, D.

doi:10.1109/iecon.2014.7048981

Cited by 5 publications

(10 citation statements)

References 6 publications

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“…Applying harmonic balance, the approximate solutions in (5) are substituted in the state equations of the resonant-capacitor voltage, obtaining the following equations:…”

Section: Power Measurement Methodsmentioning

confidence: 99%

“…The sharing of the resonant capacitor by two half‐bridge inverters has been proposed in this context [4], conditioning not only the power electronics, but also the measuring and processing methods. In [5], the small‐signal modelling of this topology is addressed. Moreover, control strategies for this specific topology have also been reported in the literature [6, 7].…”

Section: Introductionmentioning

confidence: 99%

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Power estimation for dual half‐bridge inverter with common resonant capacitor

Villa

Barragán

Navarro

et al. 2020

IET Power Electronics

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Dual half-bridge inverter with common resonant capacitor is a cost-effective solution that is often used in induction heating appliances. In this topology, a simple and reliable calculation of the power supplied by both inverters would involve measuring the output voltages, both load currents and the resonant-capacitor voltage. This study presents a real-time implementation of two methods to calculate the output powers without measuring the voltage of the resonant capacitor. Simulations are performed to confirm the validity of the methods, which are also experimentally verified through a high-level synthesis implementation in a real prototype with a system-on-chip.

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“…Applying harmonic balance, the approximate solutions in (5) are substituted in the state equations of the resonant-capacitor voltage, obtaining the following equations:…”

Section: Power Measurement Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Power estimation for dual half‐bridge inverter with common resonant capacitor

Villa

Barragán

Navarro

et al. 2020

IET Power Electronics

View full text Add to dashboard Cite

show abstract

“…5). This system has three state variables, and the EDF modeling method will get transfer functions of sixth order [16]. Thus, in this section, it will be derived a 4 th and a 2 nd order approximation of the transfer functions by applying the SVADP reduced order technique.…”

Section: A Dhbsri Svadp Model Order Reductionmentioning

confidence: 99%

“…This will make more difficult to obtain analytical expressions compared to the HBSRI, apart from the higher order. The 6 th order EDF small-signal model [16] …”

Section: A Dhbsri Svadp Model Order Reductionmentioning

confidence: 99%

“…Although these high-frequency terms can be dropped out, analytical transfer functions are difficult to be obtained even for a simple series resonant inverter (SRI). For induction heating applications, in [14,15] the small-signal model of a phase-shift and frequency controlled SRI by EDF are presented respectively, in [16] the small-signal model of a dual half bridge series resonant inverter (DHBSRI) by EDF is provided, in [17][18][19] a small-signal model of a half-bridge series resonant inverter (HBSRI) by phase-based phasor transformation is obtained. However, neither [14][15][16] nor [17][18][19] provides analytical transfer functions.…”

Section: Introductionmentioning

confidence: 99%

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Reduced-Order Models of Series Resonant Inverters in Induction Heating Applications

Domínguez

Barragán

Artigas

et al. 2017

IEEE Trans. Power Electron.

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Abstract--From the controller design framework, a simple analytical model that captures the dominant behavior in the range of interest is the optimal. When modeling resonant circuits, complex mathematical models are obtained. These high-order models are not the most suitable for controller design. Although some assumptions can be made for simplifying these models, variable frequency operation or load uncertainty can make these premises no longer valid. In this work, a systematic modeling order reduction technique, Slowly Varying Amplitude and Phase (SVAP), is considered for obtaining simpler analytical models of resonant inverters. SVAP gives identical results as the classical model-order residualization technique from automatic control theory. A slight modification of SVAP, Slowly Varying Amplitude Derivative and Phase (SVADP) is applied in this paper to obtain a better validity range. SVADP is validated for a half-bridge series resonant inverter (HBSRI) and for a highorder plant, a dual-half bridge series resonant inverter (DHBSRI) giving analytical second-order transfer functions for both topologies. Simulation and experimental results are provided to show the validity range of the reduced-order models.

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Inertia emulation with the concept of virtual supercapacitor based on SOC for distributed storage systems in islanded DC microgrid

Yengijeh

CheshmehBeigi

Hajizadeh

2022

IET Renewable Power Gen

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One of the main crises that the world will face is the over pollution of the environment due to the use of fossil fuels. This problem will be solved by replacing renewable energy sources (RESs). DC microgrids (DCMGs) provide the ability to exploit all the potential of RESs. But, high penetration of these sources reduces the inertia and damping of the DCMGs. Therefore, it makes DCMG vulnerable to fluctuations and disturbances. This challenge can be addressed by using distributed energy storage systems (DESS) in DCMGs and inertial simulations. To improve the inertia as well as to balance the charge/discharge of the DESS, the concept of a virtual supercapacitor based on the state of charge (SOC) is introduced. Under the proposed control strategy, DCMG inertia is provided and the SOC balance is maintained in charge and discharge mode. Due to the bidirectional power transmission capability, symmetrical structure and considering the protection purposes of dual half‐bridge converter (DHB) can be selected. A small signal has also been investigated to analyse the role of virtual inertia in stability. The simulation results in MATLAB/Simulink show the correct performance dynamics and high impact of the proposed scheme compared to conventional schemes.

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Small-signal model of dual half-bridge series resonant inverter sharing resonant capacitor for domestic induction heating

Cited by 5 publications

References 6 publications

Power estimation for dual half‐bridge inverter with common resonant capacitor

Power estimation for dual half‐bridge inverter with common resonant capacitor

Reduced-Order Models of Series Resonant Inverters in Induction Heating Applications

Inertia emulation with the concept of virtual supercapacitor based on SOC for distributed storage systems in islanded DC microgrid

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