A bidirectional DC-DC converter topology for low power application

Jain, Manu; Daniele, M.; Jain, Prerna

doi:10.1109/63.849029

Cited by 230 publications

(78 citation statements)

References 8 publications

(6 reference statements)

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“…Therefore, the weight, volume, and cost of the overall system can be reduced by simplifying circuit composition [1]. These desirable features increased the use of bidirectional DC-DC converters in battery chargers/dischargers, fuel cell hybrid power systems, DC uninterruptible power supplies, and energy regenerative systems in automotive applications [2]- [9].…”

Section: Introductionmentioning

confidence: 99%

Non-isolated Bidirectional Soft-switching SEPIC/ZETA Converter with Reduced Ripple Currents

Song¹,

Son²,

Lee³

2014

Journal of Power Electronics

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A novel non-isolated bidirectional soft-switching SEPIC/ZETA converter with reduced ripple currents is proposed and characterized in this study. Two auxiliary switches and an inductor are added to the original bidirectional SEPIC/ZETA components to form a new direct power delivery path between input and output. The proposed converter can be operated in the forward SEPIC and reverse ZETA modes with reduced ripple currents and increased voltage gains attributed to the optimized selection of duty ratios. All switches in the proposed converter can be operated at zero-current-switching turn-on and/or turn-off through soft current commutation. Therefore, the switching and conduction losses of the proposed converter are considerably reduced compared with those of conventional bidirectional SEPIC/ZETA converters. The operation principles and characteristics of the proposed converter are analyzed in detail and verified by the simulation and experimental results.

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Section: Introductionmentioning

confidence: 99%

Non-isolated Bidirectional Soft-switching SEPIC/ZETA Converter with Reduced Ripple Currents

Song¹,

Son²,

Lee³

2014

Journal of Power Electronics

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“…11(a), there are voltage and current surges generated due to the hardswitching mode turn-off operations in Q 5 and Q 6 , which are inherent in the push-pull circuit operating by inverter mode [3]. As a solution, a RCD snubber is employed in the prototype DC-DC converter, and the operating waveforms with the passive snubber are shown in Fig.…”

Section: B Sc Charging/discharging Operationmentioning

confidence: 99%

A High Frequency-Link Bidirectional DC-DC Converter for Super Capacitor-Based Automotive Auxiliary Electric Power Systems

Mishima¹,

Hiraki²,

Nakaoka³

2010

Journal of Power Electronics

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This paper presents a bidirectional DC-DC converter suitable for low-voltage super capacitor-based electric energy storage systems. The DC-DC converter presented here consists of a full-bridge circuit and a current-fed push-pull circuit with a high frequency (HF) transformer-link. In order to reduce the device-conduction losses due to the large current of the super capacitor as well as unnecessary ringing, synchronous rectification is employed in the super capacitor-charging mode. A wide range of voltage regulation between the battery and the super capacitor can be realized by employing a Phase-Shifting (PS) Pulse Width Modulation (PWM) scheme in the full-bridge circuit for the super capacitor charging mode as well as the overlapping PWM scheme of the gate signals to the active power devices in the push-pull circuit for the super capacitor discharging mode. Essential performance of the bidirectional DC-DC converter is demonstrated with simulation and experiment results, and the practical effectiveness of the DC-DC converter is discussed.

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“…A similar dc-dc converter has also achieved an efficiency of 97%. In addition, the use of silicon-carbide power devices in the near future will raise it to 99% [3]. Therefore, the dc-dc converter has become a promising candidate as a power electronic interface for an energy storage system.…”

Section: Iintroductionmentioning

confidence: 99%

A Novel Grid Connected Dc-Dc Converter

Mahesh¹,

Reddy²

2014

IJAREEIE

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This paper proposes a three-port grid based dc-to-dc power conversion circuit for low range distributed systems. With this converter, the load can be powered from two different dc sources, which can be a combination of two from a solar-cell panel, a fuel-cell set, a battery bank, etc. and grid source,. The power conversion circuit consists of two active power switches by commonly using an inductor and an output filter capacitor and also the gate pulses of ac inverter circuit. By adjusting the duty-ratio of the active power switch and gate pulses, the voltage regulation at the output as well as the power coordination between two input sources can be made. An experimental circuit has been built and tested to verify the analyzed and simulated results. KEYWORDS: DC-DC converter, Continuous Conduction Mode, Discontinuous Conduction Mode, Grid system I.INTRODUCTIONGenerally, electric power generated by renewable energy sources is unstable in nature, thus producing a bad effect on the utility grid. This fact spurs research on energy storage systems to smooth out active-power flow on the utility grid. Simplified existing energy storage system employing a line-frequency (50-or 60-Hz) transformer, a PWM converter, a bidirectional chopper, and an energy storage device such as electric double layer capacitors (EDLCs) or lithium-ion batteries [1]. The transformer is indispensable for some applications that require voltage matching and/or galvanic isolation between the utility grid and the energy storage device. Replacing the line-frequency transformer with a high-frequency isolated dc-dc converter would make the energy storage system more compact and flexible [2]. Various bidirectional isolated dc-dc converters have been proposed as the interface to energy storage devices with focus on automotive or fuel cell applications. Most of the presented dc-dc converters have asymmetrical circuit configurations to couple the two dc links having largely different voltages, several tens volts and several hundred volts.A bidirectional isolated dc-dc converter presented in 1991. It had two symmetrical single-phase voltage-source full-bridge converters. It suffered from a low efficiency because the first-generation IGBTs were used as switching power devices at that time. However, advancement in power device technology over the last decade has enabled the dcdc converter to operate at an efficiency as high as 97% by using the latest trench-gate IGBTs. A similar dc-dc converter has also achieved an efficiency of 97%. In addition, the use of silicon-carbide power devices in the near future will raise it to 99% [3]. Therefore, the dc-dc converter has become a promising candidate as a power electronic interface for an energy storage system. A bidirectional converter has been discussed to exchange electric power between a fuel cell, a battery, and a load, based on a three-port extension of the circuit presented [4]. The energy storage system using the bidirectional isolated dc-dc converter appropriately choosing the transformer turn rat...

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A bidirectional DC-DC converter topology for low power application

Cited by 230 publications

References 8 publications

Non-isolated Bidirectional Soft-switching SEPIC/ZETA Converter with Reduced Ripple Currents

Non-isolated Bidirectional Soft-switching SEPIC/ZETA Converter with Reduced Ripple Currents

A High Frequency-Link Bidirectional DC-DC Converter for Super Capacitor-Based Automotive Auxiliary Electric Power Systems

A Novel Grid Connected Dc-Dc Converter

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