New Non-Isolated High Voltage Gain Single-Switch DC-DC Converter Based on Voltage-Lift Technique

Meinagh, Farhad Abbasi Aghdam; Ranjbarizad, Vida; Babaei, Ebrahim

doi:10.1109/pedstc.2019.8697254

Cited by 12 publications

(2 citation statements)

References 17 publications

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“…Additionally, the voltage lift (VL) technique [40][41][42][43][44] is considered a promising approach for achieving high voltage gain. Luo introduced several lifting methods in [40], and various topologies based on these techniques have been proposed in [41][42][43][44][45][46][47][48]. However, this technique requires multiple inductors, which increases the circuit's volume.…”

Section: Introductionmentioning

confidence: 99%

A Stacked Symmetrical Non-Isolated High Step-Up Voltage Gain Converter with High Efficiency and Low Voltage Stress on Components

Dinh,

Le,

Park

2024

Energies

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This paper introduces a cascaded symmetrical non-isolated high step-up voltage gain converter with high efficiency and low voltage stress on components combining a non-isolated buck-boost converter and voltage doubler structure. In the proposed converter, the input source is connected in series to the output load; hence, a part of the source energy is directly delivered from source to load, not through the switching branch, improving efficiency. Furthermore, the appropriately stacked voltage doubler stage not only amplifies the high step-up voltage gain ratio but also considerably diminishes the voltage stress on all semiconductor devices and capacitors. As a result, the costless low internal resistance and low voltage components can be employed for higher efficiency, higher power density, and lower cost. To demonstrate the practicality of the proposed topology, the operating principle is outlined, and the steady-state characteristics are thoroughly analyzed. Furthermore, a 360 W prototype converter has been fabricated to confirm the efficiency of the proposed converter.

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Section: Introductionmentioning

confidence: 99%

A Stacked Symmetrical Non-Isolated High Step-Up Voltage Gain Converter with High Efficiency and Low Voltage Stress on Components

Dinh,

Le,

Park

2024

Energies

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“…Many non‐isolated converters are proposed in the literature to solve the problems of the conventional Boost converter [5–8]. These solutions are divided into six methods; switching capacitor topology [9], voltage multiplier cell [10], switching inductor topology [11], coupled inductor [12], voltage lift technique [13], and hybrid techniques [14]. Applying the coupled inductors is one of the most effective and efficient methods to reach high voltage gain without using extreme duty cycle.…”

Section: Introductionmentioning

confidence: 99%

High step‐up interleaved zero‐voltage transition DC–DC converter with coupled inductors

Mirzaei

Rezvanyvardom

Mekhilef

2020

IET power electron.

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A high step-up DC-DC converter which is applied to a voltage lift capacitor and coupled inductors to increase the voltage gain is proposed in this study. Moreover, the interleaved structure is applied in the converter to decrease the input ripple current. Besides, the voltage stress across the main and auxiliary switches is low. Furthermore, all switches and diodes have the soft-switching condition by using an active clamp auxiliary cell. Consequently, the proposed converter has a high efficiency which is ideal for photovoltaic applications. Energy stored in the coupled inductors is transferred to the voltage lift capacitors and then transmitted to the output. Therefore, no voltage spikes caused by leakage inductors are created on the main switches. The converter operates in continuous current mode and its control remains in pulse width modulation. A 210 W laboratory prototype of the converter with 40 V input voltage and 420 V output voltage under 100 kHz switching frequency is constructed and experimental results confirm the theoretical analysis. Low voltage stress, low input ripple current and high efficiency (96.5%) show the superiority in the operation of the proposed converter in comparison with other similar structures.

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An ultra high step‐up DC‐DC converter based on VMC, POSLLC, and boost converter

Mahdizadeh

Gholizadeh

Shahrivar

et al. 2022

IET Power Electronics

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In this article, an ultra‐high step‐up DC‐DC converter has been proposed. The topology of the converter is a combination of a cascaded boost converter, positive output super lift Luo converter (POS LLC), and a voltage multiplier cell (VMC). The lower values of the duty cycle provide a more than 10 times voltage gain. Consequently, the high voltage gain has been provided beside the lower value of the voltage/current stress of the semiconductor and an acceptable value of the efficiency. With a detailed look, it can be understood the voltage gain and efficiency of the converter have become 12 times and 90.5% based on the experimental results while the percentage of the duty cycle has become 50%. Moreover, by the mentioned percentage of the duty cycle, the normalized value of the voltage/current stress of the semiconductors has become lower than 50% by exception of only 3 semiconductor‐based components which have voltage/current stresses more than 50% and lower than the unity. In addition to all the mentioned advantages, the input current has remained continuous which solves the challenges of the input filter's capacitor. Moreover, the voltage/current stresses have been kept low‐valued. The ideal mode of the topology has been discussed for both continuous/discontinuous current modes. The non‐ideal mode of the topology and its related comparisons have been done. A comparison of the voltage/current stresses of the semiconductor‐based components has been done. Moreover, the comparison of the losses and efficiency have been done for the proposed converter and recently suggested topologies. In addition, the efficiency has been discussed for the different values of its effective factors and the resulted behavior has been expressed. Finally, the simulation and experimental outcomes have been extracted for a 120 W output power and compared with the theoretical relations' results.

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New Non-Isolated High Voltage Gain Single-Switch DC-DC Converter Based on Voltage-Lift Technique

Cited by 12 publications

References 17 publications

A Stacked Symmetrical Non-Isolated High Step-Up Voltage Gain Converter with High Efficiency and Low Voltage Stress on Components

A Stacked Symmetrical Non-Isolated High Step-Up Voltage Gain Converter with High Efficiency and Low Voltage Stress on Components

High step‐up interleaved zero‐voltage transition DC–DC converter with coupled inductors

An ultra high step‐up DC‐DC converter based on VMC, POSLLC, and boost converter

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