A New Single-Switch Isolated High-Gain Hybrid Boosting Converter

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

doi:10.1109/tie.2016.2554542

Cited by 30 publications

(21 citation statements)

References 22 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The voltages values are reported equal to 48, 100, 100, 96, 102, and 240 V DC, respectively for the capacitors C 1 to C 5 and C O . The theoretical analysis shows that the 48, 96, 96, 96, 96, and 240 V DC are expected according to Equations (13) to (17) for these capacitors, respectively. There is a good matching between the measured results and the values are estimated through the mathematical analysis.…”

Section: T a B L E 1 Comparison Between Proposed And Other Boost Convmentioning

confidence: 93%

“…4,5 For this reason, various structures have been proposed to increase the voltage. Converters such as conventional boost, [6][7][8][9] buck-boost, [10][11][12] fly-back, 13,14 and Cuk 15,16 have not high-voltage gain, and electromagnetic interference (EMI) and diode back-flow problems can be seen in these converters because the high-voltage gain can be obtained in higher duty cycles for the power switches. Generally, power converters are time-varying nonlinear systems, and due to the uncertainty of the converter parameters, their ability to be accurately modeled in all operating conditions is extremely difficult, so the control process for the power converters is always a major challenge for designers.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

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

View full text Add to dashboard Cite

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.

show abstract

Section: T a B L E 1 Comparison Between Proposed And Other Boost Convmentioning

confidence: 93%

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

View full text Add to dashboard Cite

show abstract

“…In [13][14][15], non-dissipative snubbers are introduced into flyback-type converters to recycle the energy stored in the coupled inductors. As a result, the voltage spikes produced during switching transitions can be alleviated, so the efficiency can be improved.…”

Section: Introductionmentioning

confidence: 99%

Analysis and design of an isolated high step‐up converter based on the secondary side quasi‐resonant loops

Jia

Yuan

2020

IET Power Electronics

View full text Add to dashboard Cite

In a high step-up converter, the primary side input current contributes a significant share of total power loss. Meanwhile, high-voltage stresses of secondary side components are also big issues. This study proposes an isolated converter with secondary side quasi-resonant loops. The push-pull structure is adopted to reduce active switch numbers so the primary side power loss can be controlled in a very minor range. The newly added resonant loops on the secondary side significantly decrease the current stresses of the resonant capacitors, so the power loss caused by capacitor equivalent-series-resistance is reduced. The voltage stresses of diodes and capacitors on the secondary side are also decreased by an improved symmetricalvoltage-quadrupler-rectifier structure. The proposed converter is with the maximum voltage gain equal to 4 without consideration of the transformer. Therefore, it is helpful to decrease the transformer turns ratio. The operation process is analysed in detail and the design considerations are also summarised. Theoretical analysis is verified by the experimental results of a 400 W prototype with 34-40 V input and 380 V output.

show abstract

“…The isolated high step-up DC-DC converters are widely used due to the simple structure and high reliability, furthermore, the voltage gain can be changed flexibly by adjusting the turns ratio of the transformer. However, the high turns ratio is ineluctable to bring about reduced efficiency and lower power density [12]- [14].…”

Section: Introductionmentioning

confidence: 99%

Low Input Ripple High Step-Up Extendable Hybrid DC-DC Converter

Guo

Zhang

2019

IEEE Access

View full text Add to dashboard Cite

The widely utilization of renewable energy with low output voltage makes the high voltage ratio boosting converter more popular. This article introduces a non-isolated low input ripple high step-up extendable hybrid DC-DC converter. The proposed converter is based on a two-phase interleaved BOOST converter and switch-capacitor (SC) boost circuit. One of the BOOST channels charges the capacitors in the SC circuit, and the other BOOST channel is connected in series with the capacitors to supply power to the load. Benefiting from this structure, the converter achieves high voltage gain, reduced semiconductor voltage stress, and low input current ripple. Moreover, the converter can be extended by increasing the number of switch-capacitor boost units or the parallel BOOST channels to perform better in voltage gain, input current ripple, and power density. The principle of operation, theoretical analysis, expansion scheme, and comparison with similar topologies are introduced in detail. Finally, a 100W prototype is implemented to verify the validity of the theoretical analysis. INDEX TERMS High step-up, interleaved, low input ripple.

show abstract

A New Single-Switch Isolated High-Gain Hybrid Boosting Converter

Cited by 30 publications

References 22 publications

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

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

Analysis and design of an isolated high step‐up converter based on the secondary side quasi‐resonant loops

Low Input Ripple High Step-Up Extendable Hybrid DC-DC Converter

Contact Info

Product

Resources

About