Computer-Aided Design and Optimization of High-Efficiency LLC Series Resonant Converter

Yu, Ruiyang; Ho, Godwin Kwun Yuan; Pong, Bryan Man Hay; Ling, Bo; Lam, John

doi:10.1109/tpel.2011.2179562

Cited by 189 publications

(71 citation statements)

References 22 publications

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“…Assuming a nominal power, nominal phase-shift angle and voltage, the required equivalent inductance can be calculated then by (7). This can be implemented physically on the MV side and/or LV side, but the relation shown in (6) must be satisfied.…”

Section: Operation Principle Of the Mab Convertermentioning

confidence: 99%

Optimum Design of a Multiple-Active-Bridge DC–DC Converter for Smart Transformer

Costa

Buticchi

Liserre

2018

IEEE Trans. Power Electron.

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Abstract-The modular Smart Transformer (ST) is composed by several basic converters rated for lower voltage and power. In this paper the quadruple active bridge (QAB) is used as the basic block for the modular ST. In this application, the efficiency and cost are the most important design parameters. Therefore, the paper focus on the design of the converter, with the aim to optimize its efficiency, taking the cost into consideration. To do so, the losses of all components are carefully modeled and a computer-aided design is used, where an algorithm to calculate the losses and cost is developed, allowing to perform multi-objective optimization. Additionally, Silicon IGBTs and Silicon Carbide MOSFETs are considered for the design and the performance of the converter using both semiconductors technology is compared. Experimental results obtained for the optimized 20 kW QAB converter has shown an efficiency of 97.5%.

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Section: Operation Principle Of the Mab Convertermentioning

confidence: 99%

Optimum Design of a Multiple-Active-Bridge DC–DC Converter for Smart Transformer

Costa

Buticchi

Liserre

2018

IEEE Trans. Power Electron.

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“…The proposed bidirectional multiple port dc/dc transformer is based on the series resonant converter topology, [8]- [10]. The extension of the SRC converter to the multiple output topology is achieved by adding transformer windings and the corresponding inverter/rectifier cells.…”

Section: The Proposed Multiple Port Dc/dc Transformermentioning

confidence: 99%

Bidirectional multiple port dc/dc transformer based on a series resonant converter

Pavlovic

Oliver

Alou

et al. 2013

2013 Twenty-Eighth Annual IEEE Applied Power Electronics Conference and Exposition (APEC)

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In this paper a novel bidirectional multiple port dc/dc transformer topology is presented. The novel concept for dc/dc transformer is based on the Series Resonant Converter (SRC) topology operated at its resonant frequency point. This allows for higher switching frequency to be adopted and enables high efficiency/high power density operation. The feasibility of the proposed concept is verified on a 300W, 700 kHz three port prototype with 390V input voltage and 48V and 12V output voltages. A peak overall efficiency of 93% is measured at full load. A very good load and cross regulation characteristic of the converter is observed in the whole load range, from full load to open circuit. The sensitivity analysis of the resonant capacitance is also performed showing very slight deterioration in the converter performances when a resonant capacitor is changed ±30% of its nominal value.

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“…Out of several modeling methods, e.g. [8][9][10][11][12][13][14], the rapid numerical steady-state solving method [8], also used in [9,10,11], turned out as suitable for solving this task. The operation of the LLC converter can be classified into seven operating modes.…”

Section: A Description Of Steady-state Modelmentioning

confidence: 99%

Two-phase interleaving configuration of the LLC resonant converter - Analysis and experimental evaluation

Figge¹,

Grote²,

Schafmeister³

et al. 2013

IECON 2013 - 39th Annual Conference of the IEEE Industrial Electronics Society

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The LLC resonant converter has become quite popular in recent years and is more and more used for DC-DC converters within cost effective as well as high performance power supplies. Since in case of high output power and low output voltage it is typically beneficial to use paralleled converters, this paper investigates the load sharing issue of two LLC converters connected in parallel and operated with interleaved driving signals. Value deviations of all the three passive components of the LLC resonant circuit are considered and the worst case scenarios are highlighted. Moreover a simple and practical solution to the load sharing issue applicable to a high power server PSU is presented, including measurements on a prototype to support the theoretical analysis.

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Computer-Aided Design and Optimization of High-Efficiency LLC Series Resonant Converter

Cited by 189 publications

References 22 publications

Optimum Design of a Multiple-Active-Bridge DC–DC Converter for Smart Transformer

Optimum Design of a Multiple-Active-Bridge DC–DC Converter for Smart Transformer

Bidirectional multiple port dc/dc transformer based on a series resonant converter

Two-phase interleaving configuration of the LLC resonant converter - Analysis and experimental evaluation

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