High-Efficiency DC–DC Converter With Fast Dynamic Response for Low-Voltage Photovoltaic Sources

Choi, Woo-Young

doi:10.1109/tpel.2012.2201504

Cited by 42 publications

(13 citation statements)

References 25 publications

(24 reference statements)

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“…All switch stresses are determined by the input voltage in the PSFB series-resonant converter mode. On the other hand, in the active-clamp step-up converter mode, the voltage stress of the switches S 1 and S 2 are the same as the input voltage and those of S 3 and S 4 are determined by (20). In both the operation modes, voltage stresses of the rectifier diodes are clamped at the output voltage V o .…”

Section: A Implementation Of the Prototypementioning

confidence: 99%

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Hybrid-Type Full-Bridge DC/DC Converter With High Efficiency

Lee

Park

Kwon

et al. 2015

IEEE Trans. Power Electron.

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This paper presents a hybrid-type full-bridge dc/dc converter with high efficiency. Using a hybrid control scheme with a simple circuit structure, the proposed dc/dc converter has a hybrid operation mode. Under a normal input range, the proposed converter operates as a phase-shift full-bridge series-resonant converter that provides high efficiency by applying soft switching on all switches and rectifier diodes and reducing conduction losses. When the input is lower than the normal input range, the converter operates as an active-clamp step-up converter that enhances an operation range. Due to the hybrid operation, the proposed converter operates with larger phase-shift value than the conventional converters under the normal input range. Thus, the proposed converter is capable of being designed to give high power conversion efficiency and its operation range is extended. A 1-kW prototype is implemented to confirm the theoretical analysis and validity of the proposed converter.Index Terms-Active-clamp circuit, full-bridge circuit, phaseshift control.

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Section: A Implementation Of the Prototypementioning

confidence: 99%

“…Moreover, the circuits provide a soft switching technique [18], [19]. Some studies have introduced dc/dc converters combining the active-clamp circuit and voltage doubler or mulitpler rectifier [20], [21]. The circuit configuration allows to achieve a step-up function like a boost converter.…”

Section: Introductionmentioning

confidence: 99%

Hybrid-Type Full-Bridge DC/DC Converter With High Efficiency

Lee

Park

Kwon

et al. 2015

IEEE Trans. Power Electron.

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“…The Figure 1 shows a single phase and Figure 2 shows three phase full bridge five level diode clamped multi level inverter [19][20][21][22][23][24][25]. The numbering order of switches is Sa1,Sa2 and Sa1',Sa2'.…”

Section: Diode Clamped Multi Level Invertermentioning

confidence: 99%

Application of Accelerated Particle Swarm Optimization to multi level diode clamped inverter

Madichetty

Dasgupta

2012

2012 IEEE 5th India International Conference on Power Electronics (IICPE)

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Multidimensional scaling is a technique for exploratory analysis of multidimensional data, whose essential part is optimization of a function possessing many adverse properties including multi objectivities, multimodality, and non differentiability etc.,. In this paper, global optimization algorithms for multi Objective problems are chosen for different kind of problems especially in the power Industry. Accelerated Particle Swarm Optimization Technique (APSO) is a global optimization algorithm applied to the single phase three level and three phase three level diode clamped multi level inverter, in which Total Harmonic Distortion (THD) is taken as an objective function. Different optimized pulse patterns are obtained by the Accelerated particle swarm optimization technique (APSO), these multi level inverters are simulated in MATLAB and results are shown to be better than recently reported work.

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“…Previously-reported quasi-resonant converters can enable zero-voltage switching (ZVS) for power FETs during switching transitions [12] - [14]. For example, the non-isolated boost converter in [12] requires two extra auxiliary components: an inductor and a capacitor to form the resonance for achieving ZVS.…”

Section: Introductionmentioning

confidence: 99%

“…These large-size power FETs would have large input/output capacitance and on-resistance, limiting the gate-drive speed and increasing the converter conduction power loss. The resonance can also be generated by the leakage inductance of a power transformer and an auxiliary capacitor in the power stage [13], [14]. However, the power transformer is not suitable for non-isolated converters.…”

Section: Introductionmentioning

confidence: 99%

Enabling High-Frequency High-Efficiency Non-Isolated Boost Converters With Quasi-Square-Wave Zero-Voltage Switching and On-Chip Dynamic Dead-Time-Controlled Synchronous Gate Drive

Xue

Lee

2015

IEEE Trans. Power Electron.

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This paper presents techniques to enable non-isolated boost converters to achieve high power efficiencies under high-switching-frequency and high-voltage conditions. A quasi-square-wave zero-voltage switching (QSW-ZVS) boost converter topology is proposed to achieve high-frequency soft switching without any coupled inductors in the power stage and thus minimize the switching power loss of the converter. An on-chip dynamic dead-time controller is developed to provide near-optimum dead-time for power FETs during switching transitions under different output voltage and load current conditions in order to achieve ZVS with minimal body diode conduction loss of power FETs. A synchronous gate driver is also proposed to provide fast propagation delays and output signal rise/fall time, enabling MHz operation of the converter. A hardware boost converter prototype is built with the synchronous gate driver circuitry implemented in a 0.5-μm high-voltage CMOS process. The proposed QSW-ZVS boost converter provides an output voltage of 150 V and delivers an output power of 130 W. The peak power efficiency of the proposed converter achieves 92.7% at the switching frequency of 1 MHz. Compared with state-of-the-art gate drivers, the worst-case propagation delay of the proposed synchronous gate driver is improved by at least 7.6 times. The operation frequency of the proposed non-isolated boost converter is also improved by at least 15 times compared with other state-of-the-art counterparts.Index Terms-Dynamic dead-time controller, high-frequency boost converters, high-voltage synchronous gate driver, quasi-square-wave zero-voltage switching, zero-voltage switching technique.

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High-Efficiency DC–DC Converter With Fast Dynamic Response for Low-Voltage Photovoltaic Sources

Cited by 42 publications

References 25 publications

Hybrid-Type Full-Bridge DC/DC Converter With High Efficiency

Hybrid-Type Full-Bridge DC/DC Converter With High Efficiency

Application of Accelerated Particle Swarm Optimization to multi level diode clamped inverter

Enabling High-Frequency High-Efficiency Non-Isolated Boost Converters With Quasi-Square-Wave Zero-Voltage Switching and On-Chip Dynamic Dead-Time-Controlled Synchronous Gate Drive

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