A Non-Isolated High Gain DC-DC Converters with Positive Output Voltage and Reduced Current Stresses

Gholizadeh, Hossein; Aboufazeli, Saeed; Rafiee, Zahra; Afjei, E.; Hamzeh, Mohsen

doi:10.1109/pedstc49159.2020.9088362

Cited by 28 publications

(85 citation statements)

References 9 publications

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“…Therefore, the use of a Luo converter in the second stage of the cascaded boost converter, instead of a second boost converter, increased the voltage gain, and a higher voltage gain ratio became possible with a lower value of the duty cycle. Additionally, its voltage gain became higher than the converters of [9][10][11][12][13][14][15][16][17][18][19][20][21][22]. In comparison with the converters of [10,12,13].…”

Section: Introductionmentioning

confidence: 94%

“…The input currents of the mentioned converters of [11,14] were not continuous, the number of inductors in [10,12,13] were high, and the voltage/current stress of the semiconductor devices were high. The proposed converters of [17][18][19][20], were the other type of quadratic converters that have been suggested for fuel cell applications. To achieve a great value of the voltage gain, a higher value of the duty cycle is required.…”

Section: Introductionmentioning

confidence: 99%

“…Three inductors of [17,18] could increase the volume and overall losses of a converter. Moreover, the negative polarity of the output voltage in [19,20] caused the load not to be same grounded.…”

Section: Introductionmentioning

confidence: 99%

“…Implementation of the boost topology in the first stage of the designed converter made the input current continuous and made the whole converter appropriate for renewable applications, unlike the suggested converters of [11,14]. Moreover, the high current ripple of the input current in Luo converters and the proposed converters of [10,18,20,21] are solved. In the suggested topologies of [10,18,20,21], the number of the inductor current, which passes through the input source, is different.…”

Section: Introductionmentioning

confidence: 99%

“…Moreover, the high current ripple of the input current in Luo converters and the proposed converters of [10,18,20,21] are solved. In the suggested topologies of [10,18,20,21], the number of the inductor current, which passes through the input source, is different. Therefore, similar to the Luo converter, the input current ripple of the stated converters was increased.…”

Section: Introductionmentioning

confidence: 99%

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Design and Implementation a Single-Switch Step-Up DC-DC Converter Based on Cascaded Boost and Luo Converters

et al. 2021

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We designed and implemented a single-switch step-up DC-DC converter based on cascaded boost and Luo converters. The proposed converter demonstrated a quadratic voltage gain and a high efficiency, which makes it suitable for renewable energy applications, where a high voltage gain ratio is desired without imposing a high number of bulky items or employing a high duty cycle of the active switches. This converter benefits from the continuity of the input current waveform, which equips the maximum utilisation of renewable energy sources. While a transformer-less high voltage-gain was achieved, the voltage and current stresses of the power switch and diodes were kept low in comparison with the existing quadratic DC-DC converters. We analysed the converter in both continuous and discontinuous conduction modes. A non-ideal model of components was considered for power loss and efficiency calculations and comparisons. Finally, the simulation results were extracted with PLECS and validated with experiments on a 120 W prototype.

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Section: Introductionmentioning

confidence: 94%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Design and Implementation a Single-Switch Step-Up DC-DC Converter Based on Cascaded Boost and Luo Converters

et al. 2021

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Ultra‐high voltage gain DC–DC converter based on new interleaved switched capacitor inductor for renewable energy systems

ALgamluoli,

2023

Circuit Theory & Apps

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SummaryIn this paper, introduces a DC–DC converter design based on a modified hybrid switched inductor‐switched capacitor architecture, aimed at achieving ultra‐high voltage gain in renewable energy systems (RES). The proposed converter involves adding a modified boosting conversion mode (MBM) that interleaves with the main switch to double the voltage transfer gain. Additionally, a modified switched capacitor (MSC) technique, utilizing two diodes as interleaved components, is integrated into the main and auxiliary switches to verify low voltage stress across them. In addition, modified hybrid switched inductors with capacitors (MSIC) and diodes are employed to validate ultra‐high voltage gain. The main advantages of the proposed converter are its high efficiency, low voltage stress across diodes and MOSFETs, and the utilization of low values of inductors and capacitors at high switching frequencies. In addition, the voltage stress across the inductors of the (MSIC) is reduced as the duty cycle increases. Furthermore, the current stress on the main switch is reduced when the charge of capacitor C1 becomes zero. Mathematical models for both continuous conduction mode (CCM) and discontinuous conduction mode (DCM) of the proposed converter are explored. Furthermore, a dual PI controller is designed for the proposed converter to maintain a high fixed output voltage. In addition, the PCB design and experimental testing of the proposed converter to verify the simulation and laboratory results. Specifically, the proposed converter is designed to boost up voltage (30–40 V) to a variable output voltage between 200 and 300 V at 300 W at efficiency 96.7%.

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A new extended single-switch high gain DC–DC boost converter for renewable energy applications

Mansour

Zaky

2023

Sci Rep

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High-gain DC/DC converters are considered one of the most important components of green energy systems. Large numbers of these converters are used for increasing the voltage gain by using an extreme duty cycle. However, it increases losses and the cost, degrades the system performance, and hence obtains a low efficiency. In this article, a new design of a high-gain DC/DC boost converter is proposed. This converter has the potential to be used in low input voltage applications that need a high voltage gain such as systems powered by solar photovoltaic panels and fuel cells. The new topology is characterized by its simplicity of operation, high voltage gain, better efficiency, continuity of the input current, reduced number of inductors and capacitors, and can be extended to get higher gains. The converter structure, principle of operation, and design consideration of inductors and capacitors are presented in detail. Derivation of power losses and efficiency is presented. A laboratory prototype is implemented, and various experimental tests are given. The achievement of the suggested design is confirmed and compared with other recent high-gain converters.

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A Non-Isolated High Gain DC-DC Converters with Positive Output Voltage and Reduced Current Stresses

Cited by 28 publications

References 9 publications

Design and Implementation a Single-Switch Step-Up DC-DC Converter Based on Cascaded Boost and Luo Converters

Design and Implementation a Single-Switch Step-Up DC-DC Converter Based on Cascaded Boost and Luo Converters

Ultra‐high voltage gain DC–DC converter based on new interleaved switched capacitor inductor for renewable energy systems

A new extended single-switch high gain DC–DC boost converter for renewable energy applications

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