Steep-Gain Bidirectional Converter With a Regenerative Snubber

Yao, Jia; Abramovitz, Alexander; Smedley, K.M.

doi:10.1109/tpel.2015.2395455

Cited by 47 publications

(15 citation statements)

References 22 publications

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“…The standard solution is to suppress the spikes by an RCD snubber that dissipates the leakage inductance energy in the snubber resistor. On the other hand, higher efficiency can be obtained if the leakage energy is redirected to the converter input or output by using passive regenerative snubbers [37,38] or active ZVS or ZCS snubbers [39,40]. However, for the given four-cell SEPIC configuration, such solutions can be redundant and sub-optimal.…”

Section: Flyback Regenerative Snubbermentioning

confidence: 99%

Modular Battery Charger for Light Electric Vehicles

et al. 2020

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Rapid developments in energy storage and conversion technologies have led to the proliferation of low-and medium-power electric vehicles. Their regular operation typically requires an on-board battery charger that features small dimensions, high efficiency and power quality. This paper analyses an interleaved step-down single-ended primary-inductor converter (SEPIC) operating in the discontinuous conduction mode (DCM) for charging of battery-powered light electric vehicles such as an electric wheelchair. The required characteristics are achieved thanks to favourable arrangement of the inductors in the circuit: the input inductor is used for power factor correction (PFC) without additional elements, while the other inductor is used to provide galvanic isolation and required voltage conversion ratio. A modular interleaved structure of the converter helps to implement low-profile converter design with standard components, distribute the power losses and improve the performance. An optimal number of converter cells was estimated. The converter uses a simple control algorithm for constant current and constant voltage charging modes. To reduce the energy losses, synchronous rectification along with a common regenerative snubber circuit was implemented. The proposed charger concept was verified with a developed 230 VAC to 29.4 VDC experimental prototype that has proved its effectiveness.

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Section: Flyback Regenerative Snubbermentioning

confidence: 99%

Modular Battery Charger for Light Electric Vehicles

et al. 2020

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“…Based on the equations from (14) to (16), the equation group (17) can be reduced to the following expression:…”

Section: ) Equivalent Capacitance Derivationmentioning

confidence: 99%

“…Introduction of resonant switched-capacitor (RSC) converter can alleviate the pulsating current but doesn't solve the regulation issue [13]. The tapped-inductor and transformer facilitates gain boosting function but requires snubber circuit to handle leakage problem [14]. Meanwhile, the different current ratings of different windings and turns ratio design complicate the circuit manufacture.…”

Section: Introductionmentioning

confidence: 99%

A New Hybrid Boosting Converter for Renewable Energy Applications

Liu

et al. 2016

IEEE Trans. Power Electron.

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155

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A Hybrid Boosting Converter (HBC) with collective advantages of regulation capability from its boost structure and gain enhancement functionality from its voltage multiplier structure is proposed in this paper. The new converter incorporates a Bipolar Voltage Multiplier (BVM), featuring in symmetrical configuration, single inductor and single switch, high gain capability with a wide regulation range, low component stress, small output ripple and flexible extension, which makes it suitable for front-end PV system and some other renewable energy applications. The operation principal, component stress, and voltage ripple are analyzed in this paper. Performance comparison and evaluation with a number of previous single-switch single-inductor converters are provided. A 200W 35V to 380V second-order HBC prototype was built with peak efficiency at 95.44%. The simulation and experimental results both confirm the feasibility of the proposed converter. Index Terms-HBC, Bipolar Voltage Multiplier (BVM), single-switch single inductor, nature interleaving, renewable energy

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“…Only one switch is actively switched during boost mode in the topology suggested in [32], and a complementary pair of switching signals are used in buck mode. The known SEPIC topology is modified to include both a tapped inductor and a charge pump, which enhances the gain, but also makes it necessary to add a regenerating snubber to recycle the leakage energy.…”

Section: Sepic With Tapped Inductormentioning

confidence: 99%

Review of high efficiency bidirectional dc-dc topologies with high voltage gain

Jørgensen

Mira

Zhang

et al. 2017

2017 52nd International Universities Power Engineering Conference (UPEC)

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A review of high voltage gain, high efficiency bidirectional dc-dc topologies is presented. Each converters primary benefit is highlighted, and a summary of all the converters is presented. It is observed that voltage gains higher than 20 is only achieved with topologies using a transformer. The average efficiency of the topologies is slightly lower for isolated topologies. Different strategies are utilized in most of the topologies in order to achieve the high voltage gain, and high efficiency, for example charge pumps, resonant circuits, coupled inductors, and switching cells.

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Steep-Gain Bidirectional Converter With a Regenerative Snubber

Cited by 47 publications

References 22 publications

Modular Battery Charger for Light Electric Vehicles

Modular Battery Charger for Light Electric Vehicles

A New Hybrid Boosting Converter for Renewable Energy Applications

Review of high efficiency bidirectional dc-dc topologies with high voltage gain

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