A zero-voltage-switching bidirectional battery charger/discharger for the NASA EOS satellite

Sable, D.; Lee, F.C.; Cho, B.H.

doi:10.1109/apec.1992.228354

Cited by 101 publications

(30 citation statements)

References 6 publications

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“…Synchronous boost converter is one of the most interesting bidirectional topology, especially if no galvanic isolation is required [6]. The main advantages of this converter against other topologies are the simplicity and the low number of components needed.…”

Section: Introductionmentioning

confidence: 99%

Master-slave technique with direct variable frequency control for interleaved bidirectional boost converter

Vázquez

Arias

Rodríguez

et al. 2014

2014 IEEE Energy Conversion Congress and Exposition (ECCE)

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Multiphase interleaved synchronous boost converter is one of the most interesting topologies for non-isolated bidirectional applications due to its high efficiency, high reliability and low number of components. In order to increase the efficiency, this converter can work in Discontinuous Conduction Mode (DCM) but close to Boundary Conduction Mode (BCM), known as Quasi-Square Wave Zero Voltage Switching (QSW-ZVS) to achieve soft switching condition. Nevertheless, the main disadvantage of this particular mode is the complexity of the closed loop control. First, the control has to deal with the dead time necessary to get the soft switching condition defined by the resonance between the inductor and the transistor parasitic capacitance. Second, the control also has to manage the current balance between the interleaved phases in all the operating range. And third, the control has to regulate the voltage or current of the bidirectional conversion. These three issues lead to a variable frequency control which demands a large number of resources. This paper presents a very simple variable frequency control which does not need any highly complex mathematical operation. A master-slave scheme is also proposed in order to get a very simple approach for the interleaved multiphase implementation of this converter. Simulation and experimental results are obtained to validate the proposed control technique with a two phase bidirectional synchronous boost converter prototype of 1 kW.Index Terms-Bidirectional interleaved boost, QSW-ZVS, variable frequency control.

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Section: Introductionmentioning

confidence: 99%

Master-slave technique with direct variable frequency control for interleaved bidirectional boost converter

Vázquez

Arias

Rodríguez

et al. 2014

2014 IEEE Energy Conversion Congress and Exposition (ECCE)

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“…soft switching mode ZVS when the converter is operated in continuous current mode with zerocrossing (synchronous continuous conduction mode) [10][11][12].…”

Section: Introductionmentioning

confidence: 99%

Hysteretic current controlled ZVS dc/dc converter for automobiles

Cernat

Scortaru

Tanase

et al. 2007

2007 European Conference on Power Electronics and Applications

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“…Figure 14 shows sample softswitching waveforms of this mode of operation. If the inductor current i L has peak-to-peak current ripple over 200% of the average current, soft-switching can be implemented [42]- [44]. After the high-side device is turned off and before the low-side device is turned on, the inductor current will discharge the drain-source capacitance of the lowside device and charge the capacitance of the high-side device.…”

Section: Power Stagementioning

confidence: 99%

Integrated CMOS Energy Harvesting Converter With Digital Maximum Power Point Tracking for a Portable Thermophotovoltaic Power Generator

Pilawa-Podgurski

Čelanović

et al. 2015

IEEE J. Emerg. Sel. Topics Power Electron.

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Abstract-This paper presents an integrated maximum power point tracking system for use with a thermophotovoltaic (TPV) portable power generator. The design, implemented in 0.35 µm CMOS technology, consists of a low-power control stage and a dc-dc boost power stage with soft-switching capability. With a nominal input voltage of 1 V, and an output voltage of 4 V, we demonstrate a peak conversion efficiency under nominal conditions of over 94% (overall peak efficiency over 95%), at a power level of 300 mW. The control stage uses lossless current sensing together with a custom low-power time-based ADC to minimize control losses. The converter employs a fully integrated digital implementation of a peak power tracking algorithm, and achieves a measured tracking efficiency above 98%. A detailed study of achievable efficiency versus inductor size is also presented, with calculated and measured results.

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A zero-voltage-switching bidirectional battery charger/discharger for the NASA EOS satellite

Cited by 101 publications

References 6 publications

Master-slave technique with direct variable frequency control for interleaved bidirectional boost converter

Master-slave technique with direct variable frequency control for interleaved bidirectional boost converter

Hysteretic current controlled ZVS dc/dc converter for automobiles

Integrated CMOS Energy Harvesting Converter With Digital Maximum Power Point Tracking for a Portable Thermophotovoltaic Power Generator

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