High-Efficiency DC-DC Converter With High Voltage Gain and Reduced Switch Stress

Wai, Rong‐Jong; Lin, Chien-Yu; Duan, Rou-Yong; Chang, Yung‐Ruei

doi:10.1109/tie.2006.888794

Cited by 376 publications

(139 citation statements)

References 19 publications

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“…When the switch is turned on, the first boost stage is similar to a boost converter combined with a switched capacitor converter. Conversely, when the switch is turned off, the second boost stage is similar to the flyback and switched capacitor converters [26][27][28][29][30][31][32][33][34]. The new proposed converter architecture can achieve a high step-up ratio by adjusting the duty cycle; a clamp circuit is used for energy recovery by the leakage inductor of the coupled inductor to achieve high efficiency and step-up ratio.…”

Section: Introductionmentioning

confidence: 99%

A Novel High Step-Up DC-DC Converter with Coupled Inductor and Switched Clamp Capacitor Techniques for Photovoltaic Systems

et al. 2017

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Abstract:In this study, a novel high step-up DC-DC converter was successfully integrated using coupled inductor and switched capacitor techniques. High step-up DC-DC gain was achieved using a coupled inductor when capacitors charged and discharged energy, respectively. In addition, energy was recovered from the leakage inductance of the coupled inductor by using a passive clamp circuit. Therefore, the voltage stress of the main power switch was almost reduced to 1/7 V o (output voltage). Moreover, the coupled inductor alleviated the reverse-recovery problem of the diode. The proposed circuit efficiency can be further improved and high voltage gain can be achieved. The operation principle and steady-state analysis of the proposed converter were discussed. Finally, a hardware prototype circuit with input voltage of 24 V, output voltage of up to 400 V, and maximum power of 150 W was constructed in a laboratory; the maximum efficiency was almost 96.2%.

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Section: Introductionmentioning

confidence: 99%

A Novel High Step-Up DC-DC Converter with Coupled Inductor and Switched Clamp Capacitor Techniques for Photovoltaic Systems

et al. 2017

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“…The circuit returns to the original steady state. During this period Commutation in the proposed circuit is similar to the diode-to-switch commutation mode of the ARCP inverter [14], i.e., turn-off of the main conducting device diverts the current to the corresponding resonant capacitors to charge one and discharge the other, resulting in a zero voltage turn-off. The zero voltage turn-on is achieved by gating on the in-coming device while the anti-parallel diode is conducting.…”

Section: Circuit Operation and Principlementioning

confidence: 99%

Microcontroller Based Isolated Boost Dc-Dc Converter

S.A¹,

S.S²

2011

Int. Jour. Intel. Elec. Sys.

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ZVS-PWM isolated boost DC-DC converter. It takes the supply from fuel cell battery at the input side compared to the previous full bridge converter, This half bridge converter to produce the same efficiency. The advantages of the paper is to reduce the number of devices and the mean time to reduce the losses, correspondingly to reduce the space and design cost. The system is simple and easy to operate the entire circle without more additional devices. It is used for medium and high power application. Zero voltage switching is applied in all the inverters. It is achieved the power flow in either direction. The circuit is compact packaging and reduce the losses. The simulation results are of closely agree with the theoretical approach a high efficiency achieved by using a minimal number of electronic devices working in the soft switching mode. It is operated at the frequency of 55 khz.Terms DC-DC converter, soft switching, bi-directional power flow, conduction, losses, zero current switching and zero voltage switching.

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“…Some converters successfully combined boost converters with coupled inductor, since various converter combinations are developed to carry out high step-up voltage gain by using the coupledinductor technique [1][2][3][4][5][6][7]. The efficiency and voltage gain of the dc-dc boost converter are constrained by either the parasitic effect of the power switches or the reverse recovery issue of the diodes.…”

Section: Introductionmentioning

confidence: 99%

High Step-Up DC—DC Converter for AC Photovoltaic Module with MPPT Control

Sundar¹,

Karthick²,

Reddy³

2014

Journal of Electrical Engineering

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This paper presents the high gain step-up BOOST converter which is essential to step up the low output voltage from PV panel to the high voltage according to the requirement of the application. In this paper a high gain BOOST converter with coupled inductor technique is proposed with the MPPT control. Without extreme duty ratios and the numerous turns-ratios of a coupled inductor this converter achieves a high step-up voltage-conversion ratio and the leakage energy of the coupled inductor is efficiently recycled to the load. MPPT control used to extract the maximum power from PV panel by controlling the Duty ratio of the converter. The PV panel, BOOST converter and the MPPT are modeled using Sim Power System blocks in MATLAB/SIMULINK environment. The prototype model of the proposed converter has been implemented with the maximum measured efficiency is up to 95.4 % and full-load efficiency is 93.1 % .

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High-Efficiency DC-DC Converter With High Voltage Gain and Reduced Switch Stress

Cited by 376 publications

References 19 publications

A Novel High Step-Up DC-DC Converter with Coupled Inductor and Switched Clamp Capacitor Techniques for Photovoltaic Systems

A Novel High Step-Up DC-DC Converter with Coupled Inductor and Switched Clamp Capacitor Techniques for Photovoltaic Systems

Microcontroller Based Isolated Boost Dc-Dc Converter

High Step-Up DC—DC Converter for AC Photovoltaic Module with MPPT Control

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