A Family of Resonant Two-Switch Boosting Switched-Capacitor Converter With ZVS Operation and a Wide Line Regulation Range

Li, Shouxiang; Zheng, Yifei; Wu, Bin; Smedley, K.M.

doi:10.1109/tpel.2017.2669841

Cited by 93 publications

(41 citation statements)

References 36 publications

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“…The numerous structures of Switched Capacitor (SC) cells using diodes, switches and capacitor shown in Fig. 9(a)-(o) [100]- [125]. Recently, the Switched Inductor (SI) and Hybrid combination of Switched Inductor and Switched-Capacitor (HSI-SC) proposed to lift the voltage with high conversion ratio [65], [88]- [91].…”

Section: High Voltage Step-up Multistage Power Convertermentioning

confidence: 99%

“…Multistage Switched-Capacitor Based Converters (M-SCBC) are favored by simple structure, the modular approach and potential for monolithic integration. In SC, all the capacitors are charged in parallel and discharged in series to achieve a high gain conversion ratio [100]- [107]. The gain ratio depends on the number of capacitor and arrangement of capacitors in the converter.…”

Section: Multistage Switched Capacitor Based Converter Family (M-smentioning

confidence: 99%

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Survey of DC-DC Non-Isolated Topologies for Unidirectional Power Flow in Fuel Cell Vehicles

et al. 2020

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The automobile companies are focusing on recent technologies such as growing Hydrogen (H2) and Fuel Cell (FC) Vehicular Power Train (VPT) to improve the Tank-To-Wheel (TTW) efficiency. Benefits, the lower cost, 'Eco' friendly, zero-emission and high-power capacity, etc. In the power train of fuel cell vehicles, the DC-DC power converters play a vital role to boost the fuel cell stack voltage. Hence, satisfy the demand of the motor and transmission in the vehicles. Several DC-DC converter topologies have proposed for various vehicular applications like fuel cell, battery, and renewable energy fed hybrid vehicles etc. Most cases, the DC-DC power converters are viable and cost-effective solutions for FC-VPT with reduced size and increased efficiency. This article describes the state-of-the-art in unidirectional nonisolated DC-DC Multistage Power Converter (MPC) topologies for FC-VPT application. The paper presented the comprehensive review, comparison of different topologies and stated the suitability for different vehicular applications. This article also discusses the DC-DC MPC applications more specific to the power train of a small vehicle to large vehicles (bus, trucks etc.). Further, the advantages and disadvantages pointed out with the prominent features for converters. Finally, the classification of the DC-DC converters, its challenges, and applications for FC technology is presented in the review article as stateof-the-art in research.

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Section: High Voltage Step-up Multistage Power Convertermentioning

confidence: 99%

Section: Multistage Switched Capacitor Based Converter Family (M-smentioning

confidence: 99%

Survey of DC-DC Non-Isolated Topologies for Unidirectional Power Flow in Fuel Cell Vehicles

et al. 2020

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“…As mentioned above, the switched-inductor and capacitor configurations are the most promising solutions to achieve high conversion ratio. [20][21][22][23][24][25][26][27][28][29][30]. To validate the improved performances of the proposed converter, the step-up voltage gain, switch and diode stresses are plotted in this section.…”

Section: Comparative Performance Of the Proposed Regenerative Sc/si Cmentioning

confidence: 99%

Regenerative switched‐inductor/capacitor type DC–DC converter with large voltage gain for PV applications

Karthikeyan

Kumaravel

Kumar

et al. 2020

IET Power Electronics

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In grid-connected PV applications, the presence of a transformer not only increases the cost, size and weight, but also decreases the whole system efficiency, especially, under poor irradiation conditions. To eliminate the transformer and to meet DC link voltage, a regenerative switched-inductor/capacitor type DC-DC converter with large voltage gain is proposed in this study. In traditional boost type and derived converters, the voltage gain ratio is limited due to voltage stress on the semiconductor devices and low efficiency because of more components count and large duty cycle operation. The proposed converter recycles the energy in lossless passive components and increases the step-up voltage gain, which improves the efficiency. In addition, the converter possesses fewer ripples and smooth continuous current, which reduces the power loss, elongates lifespan of the input source and restricts electromagnetic interference issues. This study presents detailed operating waveforms, modes of operation and performance characteristics of the proposed converter. In order to validate the operation, 500 W experimental prototype is developed and verified with measured results. The proposed converter yields the peak efficiency of 95.20% for the output power of 440 W.

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“…I C2,off , I C3,off , and I C4,off present the currents of the capacitors C 2 , C 3 , and C 4 , respectively. The current equations for the power diodes D 3 , D 4 , D 5 , and D 6 will be obtained through Equations (26) to (29), respectively:…”

Section: Components Current Calculationsmentioning

confidence: 99%

“…Also, normally more than one SC-cell is needed for the high-voltage gain approaches. [26][27][28] Various topologies based on the concept of the switched-capacitor cells have been presented in References 26 to 28 in which a soft switching method is used to reduce switching losses and electromagnetic interference problems. Coupled-inductor converters are another solution to improve voltage gain.…”

Section: Introductionmentioning

confidence: 99%

A transformer‐less single‐switch boost converter with high‐voltage gain and mitigated‐voltage stress applicable for photovoltaic utilizations

Yin

Ghaderi

2020

Int Trans Electr Energ Syst

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Many of the photovoltaic (PV) panels generate the low amounts of the voltages under the limited values of the powers. In order to increase these voltages to be applicable for grid utilization, DC-DC boost converters are used. A novel nonisolated transformer-less switched-capacitor-based DC-DC power boost structure is combined with the quadratic converter in this study. The proposed converter has many advantages such the low-voltage stresses on the power components, higher voltage-gain, and ability to supplying the load under the low amounts of the switching time intervals. These features lead to fewer amounts of the currents for the power components in the topology for the continuous conduction mode which means less dynamic losses and higher efficiency. Another advantage of the proposed converter is including only one power switch that simplifies the controller design for implementation purposes. A comprehensive mathematical analysis is presented and simulation with MATLAB/SIMULINK and implemented hardware test results confirm the theoretical investigations. K E Y W O R D S boost converter, continuous current mode, photovoltaic utilizations, switched-capacitor LIST OF SYMBOLS AND ABBREVIATIONS: CCM, continuous current mode; DT, duty cycle; T, time period; I C2,on , currents of capacitors C 2 for the first operation mode; I C3,on , currents of capacitor C 3 for the first operation mode; I C4,on , currents of capacitor C 4 for the first operation mode; I C5, on , currents of capacitor C 5 for the first operation mode; I C2,off , currents of capacitor C 2 for the second operation mode; I C3,off , currents of capacitor C 3 for the second operation mode; I C4,off , currents of capacitor C 4 for the second operation mode; I C5,off , currents of capacitor C 5 for the second operation mode; ID1,on, currents of diode D 1 for the first operation mode; ID 2 ,on, currents of diode D 2 for the first operation mode; ID 3 ,on, currents of diode D 3 for the first operation mode; ID 4 ,on, currents of diode D 4 for the first operation mode; ID 5 ,on, currents of diode D 5 for the first operation mode; ID 6 , on, currents of diode D 6 for the first operation mode; ID 1 ,off, currents of diode D 1 for the second operation mode; ID 2 ,off, currents of diode D 2 for the second operation mode; ID 3 ,off, currents of diode D 3 for the second operation mode; ID 4 ,off, currents of diode D 4 for the second operation mode; ID 5 , off, currents of diode D 5 for the second operation mode; ID 6 ,off, currents of diode D 6 for the second operation mode; ΔiL1, current ripples of the inductor L 1 ; ΔiL2, current ripples of the inductor L 2 ; ΔiL3, current ripples of the inductor L 3 ; ΔVo, voltage ripples of the capacitor C O ; Fs, switching frequency; ΔVc,cap, the ripple value caused by capacitor charging and discharging; P VFD , power losses by diodes.

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A Family of Resonant Two-Switch Boosting Switched-Capacitor Converter With ZVS Operation and a Wide Line Regulation Range

Cited by 93 publications

References 36 publications

Survey of DC-DC Non-Isolated Topologies for Unidirectional Power Flow in Fuel Cell Vehicles

Survey of DC-DC Non-Isolated Topologies for Unidirectional Power Flow in Fuel Cell Vehicles

Regenerative switched‐inductor/capacitor type DC–DC converter with large voltage gain for PV applications

A transformer‐less single‐switch boost converter with high‐voltage gain and mitigated‐voltage stress applicable for photovoltaic utilizations

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