A Switching Control Strategy for Single- and Dual-Inductor Current-Fed Push–Pull Converters

Nayanasiri, Dulika; Foo, Gilbert; Vilathgamuwa, D.M.; Maskell, Douglas L.

doi:10.1109/tpel.2014.2348800

Cited by 26 publications

(14 citation statements)

References 25 publications

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“…Moreover, current-fed pushpull topologies are normally used with low input voltages (i.e. 0-50V) and high currents in power conversion for fuel cells [24], battery storage [25], photovoltaic [26] and electric vehicle applications [28], due to their transformer limitations and voltage stress on the main switches. The present paper proposes to increase the scope of the topology to work as an ac-dc PFC by operating in BCM in the range of hundreds of watts to increase the efficiency by applying well-known control methods used in interleaved PFC boost rectifiers.…”

Section: A Static Analysismentioning

confidence: 99%

“…The proposal of this work is to revise the DICPP topology, which has been widely used in dc-dc, high power, low input voltage, high input current, step-up applications (i.e. fuel cells, battery storage and photovoltaic applications) [24]- [26] and has never been proposed as an ac-dc PFC [27]. Hence, the aim is to study its feasibility as an ac-dc, single-stage, converter with PF close to unity to be used in HB-LED lighting applications.…”

Section: Introductionmentioning

confidence: 99%

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An AC–DC PFC Single-Stage Dual Inductor Current-Fed Push–Pull for HB-LED Lighting Applications

Castro¹,

Martin²,

Vázquez³

et al. 2018

IEEE J. Emerg. Sel. Topics Power Electron.

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An ac-dc single-stage driver for High Brightness Light-Emitting Diodes with galvanic isolation is presented in this paper. The driver is based on a Dual Inductor Current-Fed Push-Pull converter with each inductor operating in Boundary Conduction Mode. The interleaving between the two inductors enables the converter to reduce the high input current ripple inherent to a BCM. Moreover, it is fully compliant with IEC 1000-3-2 Class C and it is able to achieve a high Power Factor. Its low component count, simplicity and overall outstanding characteristics make this current-fed topology suitable for medium power range HB-LED drivers in low cost applications. The proposed topology has been tested on a 100W prototype for the full range of the US single-phase line voltage, feeding several HB-LED strings, with an output voltage equivalent to 48V at full load. The prototype achieves a maximum efficiency of 92% with a 0.99 power factor, 8% THD at full load while guaranteeing good quality light.

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Section: A Static Analysismentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

An AC–DC PFC Single-Stage Dual Inductor Current-Fed Push–Pull for HB-LED Lighting Applications

Castro¹,

Martin²,

Vázquez³

et al. 2018

IEEE J. Emerg. Sel. Topics Power Electron.

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“…It can also provide the bi-directional operation without additional circuits. Moreover, the use of active VDR may result in a soft-switching operation, like in the DC-DC converters presented in [50]- [52]. Thus, additional research is required.…”

Section: Quasi-z-source (Qzs)mentioning

confidence: 99%

A Review of Galvanically Isolated Impedance-Source DC–DC Converters

Chub

Vinnikov

Blaabjerg

et al. 2016

IEEE Trans. Power Electron.

204

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Impedance-source converters, an emerging technology in electric energy conversion, overcome limitations of conventional solutions by use of specific impedance-source networks. Focus in this paper is on the topologies of galvanically isolated impedance-source DC-DC converters. These converters are particularly appropriate for distributed generation systems with renewable or alternative energy sources which require input voltage and load regulation in a wide range. We review here the basic topologies for researchers and engineers and classify all the topologies of the impedance-source galvanically isolated DC-DC converters according to the element that transfers energy from the input to the output: a transformer, a coupled inductor, or their combination. This classification reveals advantages and disadvantages as well as a wide space for further research. The paper also outlines the most promising research directions in this field.

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“…However, the conventional push-pull converter operates at hard switching resulting in high switching losses and producing high-voltage spike across the devices, which leads to demanding high-voltage rating switches and the problem of EMI with the increase of switching frequency [7]. In order to release these drawbacks, many zerovoltage-switching (ZVS) or zero-current-switching push-pull topologies have been proposed in past decades [8][9][10][11][12][13][14][15][16][17][18][19][20][21][22][23][24][25][26][27], where their soft switching is mostly realised by using the series, parallel or series-parallel resonance between the added or inherent resonant inductors and parasitic capacitors.…”

Section: Introductionmentioning

confidence: 99%

“…A more severe problem is high-voltage spike during the switching transient resulting from leakage inductance of the highfrequency (HF) transformer. Different passive snubber [16], energy recovery circuits [17,18] and active snubbers [19][20][21][22][23][24][25] have been discussed to suppress the voltage spike. The snubber capacitor voltage in [16] is higher than the input voltage and the duty ratio has to be fixed 0.5 to block the unintentional current path.…”

Section: Introductionmentioning

confidence: 99%

Magnetising‐current‐assisted wide ZVS range push–pull DC/DC converter with reduced circulating energy

Wang

2018

IET Power Electronics

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An improved high efficiency wide zero-voltage-switching (ZVS) range push-pull converter for low-voltage to highvoltage power conversion is proposed in this study. For this improved converter, all of primary switches are turned on with ZVS operation from full load to light load by using the energy stored in the leakage inductance aided by the magnetising inductance. The resonance between the leakage inductor and the voltage-doubler-rectifier capacitors reduces not only the voltage and current stresses of rectifier diodes but also the turns ratio of high-frequency transformer and conduction loss. In addition, the circulating energy is decreased dramatically compared with the similar converter resulting in lower conduction loss. This topology features simpler structure and higher efficiency. Detailed operational principle, design, comparative study and experimental results are fully discussed in the text. Finally, a 200 W experimental prototype has been built to verify the effectiveness of the proposed concept.

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A Switching Control Strategy for Single- and Dual-Inductor Current-Fed Push–Pull Converters

Cited by 26 publications

References 25 publications

An AC–DC PFC Single-Stage Dual Inductor Current-Fed Push–Pull for HB-LED Lighting Applications

An AC–DC PFC Single-Stage Dual Inductor Current-Fed Push–Pull for HB-LED Lighting Applications

A Review of Galvanically Isolated Impedance-Source DC–DC Converters

Magnetising‐current‐assisted wide ZVS range push–pull DC/DC converter with reduced circulating energy

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