An Optimal Structure for High Step-Up Nonisolated DC–DC Converters With Soft-Switching Capability and Zero Input Current Ripple

Mohseni, Parham; Rahimpour, Saeed; Dezhbord, Morteza; Islam, Md. Rabiul; Muttaqi, Kashem M.

doi:10.1109/tie.2021.3080202

Cited by 35 publications

(22 citation statements)

References 27 publications

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“…FIGURE 14 The experimental results of D 3 current (vertical scale is 1 A/div and horizontal scale is 1 µs/dive).…”

Section: Calculate the Power Densitymentioning

confidence: 99%

“…Conventional boost converter is not suitable, because they are not able to provide high-voltage gains with low duty cycle and low losses. Therefore, in recent years, high step-up converters have become particularly important [12][13][14]. These converters have high voltage gain to deliver very low level voltage to high level voltages and apply to the inverter [15].…”

Section: Introductionmentioning

confidence: 99%

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A new three winding coupled inductors high step‐up DC–DC converter with low input current ripple

Vesali

2023

IET Power Electronics

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A new high step‐up DC–DC converter is proposed in this study. In the proposed converter with voltage lift technique and coupled inductors (CIs) a high voltage gain is achieved. Although the proposed converter has coupled inductors, the input current is continuous and the input current ripple is low. The proposed converter has only one switch and does not have any auxiliary switch, in which the control of the switch is easy. Soft switching condition is presented for the switch in the converter as zero current switching (ZCS) for turning on instant and zero voltage switching (ZVS) for turning off instant, in which the efficiency is increased. For all diodes expect two diodes in the converter ZCS condition is provided when diodes turn off that reverse recovery problem is solved for these diodes. The proposed converter is fully analyzed and described operation of it. To confirm theoretical analysis, 300 W of the proposed converter is implemented and tested, for which in full load an efficiency of 96.5% is achieved.

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“…FIGURE 14 The experimental results of D 3 current (vertical scale is 1 A/div and horizontal scale is 1 µs/dive).…”

Section: Calculate the Power Densitymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A new three winding coupled inductors high step‐up DC–DC converter with low input current ripple

Vesali

2023

IET Power Electronics

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“…According to ( 19), (23), and (31), in order to turn on the MOSFETs under ZVS conditions, the following equation is derived, which should be established.…”

Section: Zero Voltage Switching State For Mosfetsmentioning

confidence: 99%

“…The conventional boost converter is one of the simple and non-isolated structures. In this converter, achieving high voltage and efficiency are important challenges due to high conduction and reverse recovery losses of diodes [19][20][21][22][23]. A coupled inductor (CI) is applied in the boost converter to increase voltage gain by means of turns ratio, which adds another freedom degree alongside the duty cycle.…”

Section: Introductionmentioning

confidence: 99%

An extendable soft‐switched high step‐up converter with near zero‐ripple input current suitable for fuel cell‐powered applications

Dezhbord

Babalou

Mohseni

et al. 2022

IET Renewable Power Gen

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In this paper, an extendable high step‐up topology is presented for the low input voltage applications, that is, fuel cell (FC) source. The proposed converter eliminates the pulsating input current and reduces the high input current ripple. Thus, the lifetime of this non‐linear source and energy flow is significantly improved. The high output voltage is achieved by using voltage multiplier cells (VMC) and a coupled inductor (CI) with reduced elements. Moreover, an auxiliary circuit is applied due to restoring the energy of leakage inductance in the CI. Therefore, not only all power switching devices are turned on under zero voltage switching (ZVS) but also the input current ripple is remarkably reduced to zero. Furthermore, normalized semiconductors’ voltage stresses are diminished. The reverse recovery problem of diodes and their turn‐off power losses at high frequencies are alleviated owing to their zero current switching (ZCS) turn‐off. In this paper, the performance of the proposed structure is investigated and compared with the traditional converters considering their voltage gain and voltage stress. Eventually, a 500‐W prototype of the proposed converter is built and tested to validate mathematical analyses.

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“…In addition, the rapid growth of energy consumption across the globe has increased numerous renewable energy-based power generation systems, control algorithms, smart grids, advanced energy conversion, hybrid energy storage systems, and management systems. These systems require advanced power converters to convert the voltage efficiently; as a result, the power generation based on renewable energy sources will be enhanced [ 3 , 4 ]. Therefore, recently, power generation through improved control techniques and better power switching devices is one of the hot research areas [ 5 , 6 ].…”

Section: Introductionmentioning

confidence: 99%

Low-Stress and Optimum Design of Boost Converter for Renewable Energy Systems

et al. 2022

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This paper examines the design and analysis of DC–DC converters for high-power and low-voltage applications such as renewable energy sources (RESs) and comparisons between converters based on switch stresses and efficiency. The RESs including photovoltaic arrays and fuel cell stacks must have enhanced output voltages, such as 380 V DC in the case of a full bridge inverter or 760 V DC in the case of a half bridge inverter, in order to interface with the 220 V AC grid-connected power system. One of the primary difficulties in developing renewable energy systems is enhancing DC–DC converters’ efficiency to enable high step-up voltage conversion with high efficiency and low voltage stress. In the present work, the efficiency, current, and voltage stress of switches of an isolated Flyback boost converter, simple DC–DC Boost converter, and an Interleaved boost converter, are explored and studied relatively. The most suitable and optimized options with a high efficiency and low switching stress are investigated. The more suitable topology is designed and analyzed for the switch technology based on the Silicon-Metal Oxide Semiconductor Field Effect Transistor (Si-MOSFET) and the Gallium Nitride-High Electron Mobility Transistor (GaN-HEMT). The Analytical approach is analyzed in this paper based on efficiency and switching stress. It is explored that GaN HEMT based Flyback boost converter is the best. Finally, the future direction for further improving the efficiency of the proposed boost converter is investigated.

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An Optimal Structure for High Step-Up Nonisolated DC–DC Converters With Soft-Switching Capability and Zero Input Current Ripple

Cited by 35 publications

References 27 publications

A new three winding coupled inductors high step‐up DC–DC converter with low input current ripple

A new three winding coupled inductors high step‐up DC–DC converter with low input current ripple

An extendable soft‐switched high step‐up converter with near zero‐ripple input current suitable for fuel cell‐powered applications

Low-Stress and Optimum Design of Boost Converter for Renewable Energy Systems

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