Ultrahigh Step-Up DC–DC Converter Composed of Two Stages Boost Converter, Coupled Inductor, and Multiplier Cell

Rezaie, Milad; Abbasi, Vahid

doi:10.1109/tie.2021.3091916

Cited by 51 publications

(25 citation statements)

References 24 publications

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“…It should be noted that, input filter capacitor is not included in this count. 8) In some literature, total components count has been considered as a figure of merit to evaluate converters [11,80,84,121,143,146,177,179,237]. Nevertheless, it seems meaningless to add the counts of switches, diodes, magnetic cores and capacitors, since it is an unweighted components count (UCC) metric bearing no practical and physical concept.…”

Section: A Numerical Characteristicsmentioning

confidence: 99%

“…13) The lowest and highest voltage gain values in CF converters are assigned to [213,231,234,241] and [50, 65, 69, 110, 112, 132b], respectively. The corresponding ratings are dedicated to [178a, 215, 227, 230, 238a] and [79,84,123] in VF topologies, respectively. It is clear that the CF converters provide higher voltage gain than the VF.…”

Section: B Operational Features a Steady State Voltage Gainmentioning

confidence: 99%

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Nonisolated High Step-Up DC–DC Converters: Comparative Review and Metrics Applicability

Tarzamni

Gohari

Sabahi

et al. 2024

IEEE Trans. Power Electron.

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Due to the extensive role of non-isolated high step-up DC-DC converters (NHSDC)s in industrial applications and academic research, many of these pulse width modulation converters have been presented in recent years. For each of these NHSDCs, some claims are introduced to verify its capabilities and features, which has been investigated in some review papers with different frameworks. Dissimilar to previous review papers, which have focused on the classification and derivation of voltage boosting techniques, this paper aims to evaluate the converters from various topological and operational points of view, and determine the superiority of each technique and converter according to applications. Some of these metrics are voltage gain, stresses, ripple, cost, power density, weight, size, control complexity and components count which lead to a comprehensive comparative study. Then, as the main purpose of this paper, effectiveness of these metrics is assessed to show how well they can lead us to the fair comparison results. Moreover, some new figures of merit are proposed in this paper to provide a helpful guideline in power electronic converters comparison studies. Finally, the feasibility discussion of single-and multi-objective figures of merit is followed by general practical conclusion and outlook about the NHSDC structures.

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Section: A Numerical Characteristicsmentioning

confidence: 99%

Section: B Operational Features a Steady State Voltage Gainmentioning

confidence: 99%

Nonisolated High Step-Up DC–DC Converters: Comparative Review and Metrics Applicability

Tarzamni

Gohari

Sabahi

et al. 2024

IEEE Trans. Power Electron.

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“…The other converters block some portion of the output voltage which can be very high while the proposed converter distributes this stress across multiple stages while maintaining a similar component count to the other converters from the literature. [19,[28][29][30][31][32][33][34][35][36][37][38][39][40][41][42] Another comparison is made to a set of converters that were designed to be used as the voltage-boosting portion of a microinverter shown in Table IV. The proposed again has a significant gain benefit over the others while also distributing stress across the SDC stages and maintaining a semiconductor count that is average for all entries in the table.…”

Section: A State-of-the-art Comparisonmentioning

confidence: 99%

Isolated Flying Capacitor Multilevel Converters

Graziani

Cook

Grainger

2022

IEEE Open J. Power Electron.

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This paper presents the topology known as the isolated flying capacitor multilevel flyback converter (FCMFC). The topology uses isolated flying capacitors (FC) for high-gain, DC-DC power conversion while maintaining primary-secondary isolation and improving the efficiency and capability of a standard flyback transformer circuit. Three converters have been developed and tested, one flyback as a control, a 3 level FCMFC, and a 4 level FCMFC to prove the gain and efficiency benefits of this new topology. The FCMFC prototypes achieve higher gain and efficiencies relative to a flyback design utilizing the same off-theshelf transformer. The stress of the input and output switches is reduced because of the fractioning of the output voltage across multiple output stages, allowing future iterations to utilize lowerrated components. The operating parameters are 5V to 40V boosting for a 10W load at 250kHz. Utilizing the same semiconductor components, the flyback converter control prototype achieves 78% efficiency while the proposed FCMFC converters reach 85% and 82% efficiency, even with the added isolated power, gate drive, and bootstrap circuitry. The FCMFCs have a multiplying effect on the gain of the traditional flyback which also increases near the 90% duty cycle flyback threshold. Additional testing was done at light load and at 100kHz, 250kHz, 452kHz, and 500kHz.

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“…This subsection obtains the TSFM of the CF-DVM. The nonlinear dynamic model represented in (6) has some nonlinear terms. The sector nonlinearity approach can calculate the TSFM of this system.…”

Section: Design Of the Fuzzy-based Mpc Of Cf-dvm A Ts Fuzzy Represent...mentioning

confidence: 99%

“…To address these limitations, different techniques and structures were proposed in the literature [2], such as switched-inductor (SI) [5], switched-capacitor (SC) cells, switched-capacitor-inductor (SCI) networks [3], coupled inductors [6], and non-coupled inductors [7], including the cascaded converters and voltage multipliers (VM) [8].…”

Section: Introductionmentioning

confidence: 99%

Dynamics and Model Predictive Control of Current-Fed Dickson Voltage Multiplier: TS Fuzzy Approach

et al. 2022

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This study presents a new approach to modeling and control the current-fed Dickson voltage multiplier (CF-DVM). The capacitor voltage relation and the input current are obtained. As all switching intervals are considered in detail, a highly accurate dynamic model is obtained, which can be easily extended for a CF-DVM with an arbitrary number of stages. Using the precise extracted model, the Takagi-Sugeno fuzzy model (TSFM) of the CF-DVM is provided, which is an exact equivalent representation of the CF-DVM nonlinear model. Then, a highly accurate and responsive model predictive controller (MPC) is designed based on an obtained TSFM of the CF-DVM to control the output voltage in an optimal and constrained manner. To obtain the control signal, the suggested optimization problem is converted to a quadratic programming (QP)-based problem which has a low online computational burden. Moreover, the performance of the proposed MPC is compared with the PI controller and the linear MPC. Finally, the simulation and experimental results demonstrate the promising merits of the proposed model and control approaches. INDEX TERMSDC-DC boost converter, current-fed Dickson voltage multiplier, TS fuzzy model, model predictive control.

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Ultrahigh Step-Up DC–DC Converter Composed of Two Stages Boost Converter, Coupled Inductor, and Multiplier Cell

Cited by 51 publications

References 24 publications

Nonisolated High Step-Up DC–DC Converters: Comparative Review and Metrics Applicability

Nonisolated High Step-Up DC–DC Converters: Comparative Review and Metrics Applicability

Isolated Flying Capacitor Multilevel Converters

Dynamics and Model Predictive Control of Current-Fed Dickson Voltage Multiplier: TS Fuzzy Approach

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