Zero-Voltage-Transition Interleaved Boost Converter With an Auxiliary Coupled Inductor

Yi, Je-Hyun; Choi, Wonchang; Cho, Bo-Hyung

doi:10.1109/tpel.2016.2614843

Cited by 50 publications

(20 citation statements)

References 23 publications

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“…[36][37][38][39][40][41] In the proposed converter, since the maximum ripple and average current values are 2A and 7A, respectively, this ratio will be around 28% that is considered as a good design. Also, the Equation (34) shows that the fewer ripples can be obtained for the input current with a greater inductor or higher switching frequency. The main concern is that there is a reverse relation between the frequency and value of the inductor.…”

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

confidence: 99%

“…An interleaved technique is used to reduce the ripple of the input and output components and reduce the size of the capacitors required in the input and output of the converter. [31][32][33][34] Applying this technique also reduces the stress of the semiconductor power flow. Interleaved DC-DC converters are presented to decrease the current levels in the converter and the dynamic losses.…”

Section: Introductionmentioning

confidence: 99%

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

confidence: 99%

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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“…This converter is basically a boost converter with voltage-doubler configuration in order to attain high step-up conversion ratio [18]. A soft-switched interleaved boost converter was suggested which reduces conduction losses and removes the reverse-recovery issue by employing soft-switching cell [20]. A new soft-switched dc-dc converter which has less voltage and current stress with ZVS turn-on feature for all active switches and applicable for high source voltage and load current applications was explored [22 -23].…”

Section: Introductionmentioning

confidence: 99%

Analysis and design of LCS resonant cell based enhanced zero-voltage transition DC-DC boosting converter

Nagarajan

Fusic²

2019

Serb J Electr Eng

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An enhanced zero-voltage transition boosting converter (EZVTBC) is introduced here which belongs to higher-order family. It exhibits lower source current and load voltage ripples and also it maintains better voltage gain with respect to traditional step-up converter. The zero-voltage transition is attained with an aid of a LCS resonant cell integrating L r  C r resonance tank network along with an extra switch. LCS resonant cell is the modified version of conventional ZVT switch cell and the salient feature of this cell is to eliminate peak current stress and conduction losses of main switch as this remains a predominant problem in hard-switched boost converter and it also improves efficiency. Initially, time domain expressions of EZVTBC are derived using Kirchhoff's laws for different operational stages to predict the resonant transition phenomenon. The simulation is progressed in PSIM software in order to verify its soft-switching performance on a 12-24 V, 30 W converter and also dynamic performance of the converter has been studied with line and load variations. It is found that for rated load conditions, efficiency of the soft-switched converter is improved 5 to 10% approximately and resulted in 97%. Moreover the peak current stress and conduction losses were eliminated.

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“…Most of the proposals are focused on the optimization of the voltage gain ratio in the pursuit of duty cycle improvement [1][2][3][4][5]. Many single-stage high voltage gain converters have been developed [6][7][8][9][10] with Figure 1 shows the dual interleaved DC-DC boost converter with magnetically coupled inductors. Analysis of the DC-DC converter ( Figure 1) is primarily done under operation in the CCM mode, so that the currents i 1 and i 2 are always positive.…”

Section: Introductionmentioning

confidence: 99%

High Gain Boost Interleaved Converters with Coupled Inductors and with Demagnetizing Circuits

et al. 2018

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This paper proposes double interleaved boost converters with high voltage gain and with magnetically coupled inductors, while a third coupled winding is used for magnetic flux reset of the core during converter operation. The topology of the proposal is simple, it does not require many additional components compared to standard interleaved topologies, and it improves the transfer characteristics, as well as system efficiency even for high power levels. The investigation of steady-state operation was undertaken. It was discovered that the proposed converter can be designed for a target application where very high voltage gain is required, while adjustment of voltage gain value can be done through duty-cycle variation or by the turns-ratio modification between individual coils. The 1 kW prototype was designed to test the theoretical analysis. The results demonstrate that the proposed converter achieves very high voltage gain (1:8), while for the designed prototype the peak efficiency reaches >96% even when two additional diodes and one winding were implemented within the converter's main circuit. The dependency of the output voltage stiffness on load change is minimal. Thus, the presented converter might be a proper solution for applications where tight constant DC-bus voltage is required (a DC-DC converter for inverters).

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Zero-Voltage-Transition Interleaved Boost Converter With an Auxiliary Coupled Inductor

Cited by 50 publications

References 23 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 LCS resonant cell based enhanced zero-voltage transition DC-DC boosting converter

High Gain Boost Interleaved Converters with Coupled Inductors and with Demagnetizing Circuits

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