A Novel Nonisolated Buck–Boost Converter With Continuous Input Current and Semiquadratic Voltage Gain

Yari, Keyvan; Shahalami, Seyed Hamid; Mojallali, Hamed

doi:10.1109/jestpe.2021.3069788

Cited by 32 publications

(45 citation statements)

References 40 publications

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“…Figure 15 shows that the proposed converter has a higher voltage gain than other converters except for the converter in [22]. Although the converter in [22] has better voltage gain, it uses a higher number (fourteen) circuit components. The effectiveness index (EI) is another performance indices that is measured by taking the ratio of voltage gain and the total number of components used in the converter and is used to evaluate the power density of the power electronic converter [22].…”

Section: Comparative Analysismentioning

confidence: 99%

“…Figure 15 shows the comparison of proposed converter voltage gain with a quadratic buck-boost converter [16], the enhanced gain buck-boost converter [17], a new quadratic following boost converter [18], a negative output buckboost converter [15], a continuous input quadratic buckboost converter [21], and a switched capacitor-inductor network-based boost converter [20], a high gain quadratic buck-boost converter [22], a switched capacitor cell extended modified cascaded converter [19], and singleswitch high gain quadratic boost converter [23]. Figure 15 shows that the proposed converter has a higher voltage gain than other converters except for the converter in [22]. Although the converter in [22] has better voltage gain, it uses a higher number (fourteen) circuit components.…”

Section: Comparative Analysismentioning

confidence: 99%

“…Although the converter in [22] has better voltage gain, it uses a higher number (fourteen) circuit components. The effectiveness index (EI) is another performance indices that is measured by taking the ratio of voltage gain and the total number of components used in the converter and is used to evaluate the power density of the power electronic converter [22]. From Table 1, the EI is calculated at different duty ratios for all the high gain converters and is depicted in Figure 16.…”

Section: Comparative Analysismentioning

confidence: 99%

“…Despite the wide conversion ratio, it has a drawback of inverted output. Recently, another quadratic buck-boost converter [22] produced a very high voltage gain with continuous input but exhibited poor power density due to more passive components (4 inductors and five capacitors). Thus, the controller design is complex as the small-signal order of the converter is high.…”

Section: Introductionmentioning

confidence: 99%

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Non-Isolated High Gain Quadratic Boost Converter Based on Inductor’s Asymmetric Input Voltage

2021

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This paper introduces the concept of inductors asymmetric input voltage to derive a new high voltage gain converter. The proposed converter has continuous input, positive output, and high-power density features suitable for renewable energy applications. The operating principle, steady-state performance, practical voltage gain, small-signal analysis, and efficiency of the converter are presented in this work. A comprehensive comparison is made with the high voltage gain converters available in literature in terms of component count, voltage gain, effectiveness index, voltage and current stress on the power devices, per unit switching device rating, and other features like output polarity and availability of common ground. The proposed topology possesses a higher effectiveness index and lower switching device power rating (SDP), resulting in a good form factor. To validate the performance of the proposed converter, the experiments are conducted on the 150 W laboratory prototype, and corresponding results are presented in this work.INDEX TERMS DC-DC converter, high voltage gain, quadratic converter, steady-state analysis, voltage stress.

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Section: Comparative Analysismentioning

confidence: 99%

Section: Comparative Analysismentioning

confidence: 99%

Section: Comparative Analysismentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Non-Isolated High Gain Quadratic Boost Converter Based on Inductor’s Asymmetric Input Voltage

2021

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“…Traditional buck-boost converters, CUK and SEPIC, are able to buck or boost input voltage; however, their bucking or boosting abilities are limited, and they have high stress on their switching devices, hence their efficiency and applications are limited [1][2][3][4][5][6]. In order to improve step-up/-down abilities, a group of power converters have been developed in the literature [7][8][9][10][11][12][13][14][15][16][17]. The topology proposed in [7] is a modification of the traditional buck-boost converter with improved voltage gain, but it has an inverted output and two of the switching devices are under high voltage stress.…”

Section: Introductionmentioning

confidence: 99%

An Efficient Non-Inverting Buck-Boost Converter with Improved Step Up/Down Ability

et al. 2022

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In this article, a new non-inverting buck-boost converter with superior characteristics in both bucking and boosting is presented. The proposed converter has some distinct features, such as high step-up/-down ability and low voltage/current stress on its switching devices. The voltage gain of the proposed converter is double the reported value for the traditional buck-boost converter. Although it has three switches, the three switches operate simultaneously, hence no dead-time is required. Two out of the three switches are under voltage stress equal to half of the output voltage. The overall efficiency of the system is promising because of the ability to select devices with low voltage drops. Converter analysis and steady-state performance in both continuous conduction mode (CCM) and discontinuous conduction mode (DCM) are presented in detail. A 1 kW hardware prototype of the converter was implemented in the laboratory; with a step-up ratio of 3.5 and 1 kW power, the measured efficiency is above 95.4%, and with step-up ratio 8, it is around 91.5%.

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A new transformerless semi‐quadratic buck–boost converter based on combination of Cuk and traditional buck–boost converters

Hosseinpour

Ahmadi

Seifi

et al. 2022

Circuit Theory & Apps

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In this paper, a new transformerless buck–boost converter is proposed. This converter is based on combining two basic converters, including Cuk and traditional buck–boost converters, along with a voltage multiplier (VM) at the output side. The proposed semi‐quadratic buck–boost converter operates in continuous conduction mode (CCM) and provides two operation modes by turning the switches on and off. This converter has some merits such as a wide conversion ratio and continuous input current. The proposed converter consists of two switches with simultaneous operation resulting in simplicity in control. A modular configuration and a wide range of duty cycles are available through the proposed converter, which causes higher or lower output voltage and facilitates the converter maintenance. The calculations of the ideal and the real voltage gain, voltage stress of switches and diodes, efficiency, and design consideration of elements are given in this paper. Finally, a prototype is implemented, and experimental waveforms are obtained to prove and validate the simulation results as well as the theoretical analysis of the proposed converter.

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A Novel Nonisolated Buck–Boost Converter With Continuous Input Current and Semiquadratic Voltage Gain

Cited by 32 publications

References 40 publications

Non-Isolated High Gain Quadratic Boost Converter Based on Inductor’s Asymmetric Input Voltage

Non-Isolated High Gain Quadratic Boost Converter Based on Inductor’s Asymmetric Input Voltage

An Efficient Non-Inverting Buck-Boost Converter with Improved Step Up/Down Ability

A new transformerless semi‐quadratic buck–boost converter based on combination of Cuk and traditional buck–boost converters

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