Phase-Shifted Full-Bridge DC–DC Converter With High Efficiency and High Power Density Using Center-Tapped Clamp Circuit for Battery Charging in Electric Vehicles

Lim, Cha-Yong; Jeong, Yong Hwan; Moon, Gun-Woo

doi:10.1109/tpel.2019.2899960

Cited by 83 publications

(16 citation statements)

References 23 publications

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“…Topology of the proposed multi-level charging system. was easily built without the power supply of a separate independent gate amplifier and reducing the unit cost of charging system [16]- [18].…”

Section: Multi-level Charging System For Pmds a Hardware Descrimentioning

confidence: 99%

Multi-Level DC/DC Converter for E-Mobility Charging Stations

et al. 2020

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The interest in electric-powered transportation has been increased because of problems such as depletion of fossil fuel resources and environmental issues caused by internal combustion engines. The market for various kinds of small E-mobility devices (EMDs), such as electric vehicles (EVs), E-bikes, segways, and mini-boards has been growing rapidly. Of these, the distribution of the small electric vehicles called personal mobility devices (PMDs), which can address problems such as traffic issues and environmental pollution, is expected to gain momentum. However, unlike the widely used charging stations for EVs, charging systems for PMDs are insufficient. The large size of dedicated PMD charging adapters makes them inconvenient to transport. Therefore, to make PMDs more attractive, it is necessary to deploy charging stations that can charge all types of PMDs. The present study proposes a new charging system that can respond to the needs of PMDs having various voltages and implement low charging current ripple. The proposed multi-level charging system can share power by subdividing the power supply to handle the charging requirements of various PMDs. In order to verify the validity of the proposed charging system, we performed simulations and conducted experiments by building a prototype charging system. INDEX TERMS Electric vehicles (EVs), dc/dc converter, personal mobility devices (PMDs), multi-level charging system, E-mobility.

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Section: Multi-level Charging System For Pmds a Hardware Descrimentioning

confidence: 99%

Multi-Level DC/DC Converter for E-Mobility Charging Stations

et al. 2020

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“…As a result, the current flowing in secondary rectifiers D 2 , D 4 , D 6 and D 8 decays. To overcome this shortfall, the other secondary rectifiers D 1 , D 3 , D 5 , and D 7 also start conducting, clamp all secondary windings to zero voltage. The full bridge voltage V p14 appears on the sum of leakage inductors L k_L , which resonates along with C s f and C se .…”

Section: B) Modementioning

confidence: 99%

“…Therefore, the reduced duty cycle at high input voltage degrades performance of the converter. Similarly, when it comes to extending the operational range, PSFB topology also has few drawbacks [5]- [8] such as loss of duty cycle, extended freewheeling period, circulation current, narrow range of ZVS operation and high voltage spikes. As a comparison, extended freewheeling period due to reduced duty cycle contributes more in the degradation of the performance.…”

Section: Introductionmentioning

confidence: 99%

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A Modified Higher Operational Duty Phase Shifted Full Bridge Converter for Reduced Circulation Current

Bakar

Bertilsson

2020

IEEE Open J. Ind. Electron. Soc.

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Besides many advantages, the reduction in the operational duty of a traditional phase shifted full converter limits its scope in applications where a wide range of input voltage is the main requirement. Operation with low duty cycle extends freewheeling interval, which results in degraded performance such as more circulating current, increased conduction loss in power devices, narrow range of zero voltage switching and increased EMI. To overcome these drawbacks, this work suggests a modified phase shifted full bridge converter that keeps the operational duty of the converter high for a wide range of input voltage. This cuts the freewheeling interval and improves performance. The proposed converter consists of four low profile transformers having a structure of reconfigurable interconnections. There are two distinct reconfigurable operational modes, a low-gain mode and a high-gain mode, which can be adopted following the variation in line voltage. The proposed work is validated in LTspice simulation and hardware characterization for a wide range of input voltage 100-400 V dc / 12 V out and up to the load power of 1.2 kW. INDEX TERMS Wide range converter, low freewheeling, reduced circulation current, high duty cycle, ZVS, resonant converter, multiple transformers, series transformers, PSFB converter, reconfigurable converter.

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“…The characteristics are introduced using PPS‐FBC as an example. As one of the mainstream topologies of isolated DC/DC circuits, the traditional PPS‐FBC has the characteristics of high efficiency, high power density and high reliability [4–6]. Utilising the transformer leakage inductance and switch intrinsic capacitance, it can achieve ZVS without any external passive components [7–10].…”

Section: Introductionmentioning

confidence: 99%

Secondary‐side phase‐shifted full‐bridge converter with reset winding

Liu

Zhao

Wang

et al. 2020

IET Power Electronics

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A resonant inductor and two clamping diodes are introduced into the secondary phase shift full-bridge converter (SPS-FBC), which can well suppress voltage spike across the rectifiers. However, the resonant inductor and two clamping diodes will bring some other problems. In this study, an auxiliary winding in series with the resonant inductor is added to the SPS-FBC to reset the clamp diode current rapidly. The auxiliary winding not only reduces the circulation losses of the switches and the clamping diodes, but also makes the clamping diodes naturally turn-off and avoids the reverse recovery even when the output filter inductance and magnetising inductance are relatively large. The principle of operation and performance are illustrated and verified on a 1.5 kW experimental circuit. In addition, the efficiency and losses of the converters with/without reset winding are compared and analysed. The efficiency of the converter with reset winding is significantly improved over the entire operating range and the peak efficiency is 96.60% at full load.

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Phase-Shifted Full-Bridge DC–DC Converter With High Efficiency and High Power Density Using Center-Tapped Clamp Circuit for Battery Charging in Electric Vehicles

Cited by 83 publications

References 23 publications

Multi-Level DC/DC Converter for E-Mobility Charging Stations

Multi-Level DC/DC Converter for E-Mobility Charging Stations

A Modified Higher Operational Duty Phase Shifted Full Bridge Converter for Reduced Circulation Current

Secondary‐side phase‐shifted full‐bridge converter with reset winding

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