Analytical Model of the Half-Bridge Series Resonant Inverter for Improved Power Conversion Efficiency and Performance

Sarnago, Héctor; Lucía, Óscar; Mediano, Arturo; Burdío, J.M.

doi:10.1109/tpel.2014.2359576

Cited by 58 publications

(39 citation statements)

References 30 publications

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“…The reason is that the LCL-type resonant tank is proven to be helpful for maintaining zero-voltage switching and high efficiency for a wide load range [19][20][21][22][23][24]. With a capacitive output filter, the voltage ringing on the diode rectifier due to an inductive output filter could be eliminated.…”

Section: Introductionmentioning

confidence: 99%

A Linearized Large Signal Model of an LCL-Type Resonant Converter

Li¹,

Li²,

Lu³

et al. 2015

Energies

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In this work, an LCL-type resonant dc/dc converter with a capacitive output filter is modeled in two stages. In the first high-frequency ac stage, all ac signals are decomposed into two orthogonal vectors in a synchronous rotating d-q frame using multi-frequency modeling. In the dc stage, all dc quantities are represented by their average values with average state-space modeling. A nonlinear two-stage model is then created by means of a non-linear link. By aligning the transformer voltage on the d-axis, the nonlinear link can be eliminated, and the whole converter can be modeled by a single set of linear state-space equations. Furthermore, a feedback control scheme can be formed according to the steady-state solutions. Simulation and experimental results have proven that the resulted model is good for fast simulation and state variable estimation.

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Section: Introductionmentioning

confidence: 99%

A Linearized Large Signal Model of an LCL-Type Resonant Converter

Li¹,

Li²,

Lu³

et al. 2015

Energies

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“…However, in reality the voltage is not zero. It has been shown previously, [13], [27], [ 28], that the parasitic inductance in the snubber loop, the size of the capacitive snubber as well as I t-off impact the losses. This paper will only consider the magnitude of I t-off and not go deeper into the theory of switching losses in SLR converters with capacitive snubbers.…”

Section: Series-loaded Resonant Converter and Dual Controlmentioning

confidence: 92%

Dual control used in series-loaded resonant converter with SiC devices

Tolstoy

Ranstad

Colmenares

et al. 2015

2015 9th International Conference on Power Electronics and ECCE Asia (ICPE-ECCE Asia)

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This paper presents the performance of silicon carbide (SiC) switches in a series-loaded resonant (SLR) converter with dual control (DuC). It is shown that the SiC metal oxide-semiconductor field-effect transistor (MOSFET) with DuC increases the overall efficiency of the SLR converter compared to frequency modulation (FM). For the SiC bipolar junction transistors (BJT), the loss reduction with DuC instead of FM is not as dramatic as for the MOSFET case. Regardless of which transistor type used, the switching losses are around 20 % of the total losses at around 25 kHz.With DuC an almost constant switching frequency is used over the full voltage range compared to FM were the switching frequency increases by 13 %. Additionally a reduction of capacitive snubbers is achieved with DuC.

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“…assuming a square wave (SW) modulation which is commonly applied in most WPT and IH systems, the average resonant capacitor voltage can be simplified [25] to:…”

Section: A Resonant Converter Analysismentioning

confidence: 99%

Operating Conditions Monitoring for High Power Density and Cost-Effective Resonant Power Converters

Sarnago

Lucía

Navarro

et al. 2016

IEEE Trans. Power Electron.

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Resonant power conversion is a key enabling technology for many high performance and high efficiency systems. Induction heating is an example of such systems which outperforms conventional heating technologies, leading to a wide spectrum of industrial, domestic, and medical applications. In order to ensure the proper operation of the resonant converter, accurate converter operation monitoring techniques are required. This paper proposes an effective monitoring technique based on the measurement of the resonant capacitor voltage. The proposed monitoring system provides essential information regarding the output power, soft-switching conditions, and input voltage, while featuring a cost-effective implementation. The proposed technique is validated through an FPGA-controlled resonant power converter applied to induction heating, proving the feasibility of this proposal. 0885-8993 (c)

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Analytical Model of the Half-Bridge Series Resonant Inverter for Improved Power Conversion Efficiency and Performance

Cited by 58 publications

References 30 publications

A Linearized Large Signal Model of an LCL-Type Resonant Converter

A Linearized Large Signal Model of an LCL-Type Resonant Converter

Dual control used in series-loaded resonant converter with SiC devices

Operating Conditions Monitoring for High Power Density and Cost-Effective Resonant Power Converters

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