DC–DC Boost Converter With a Wide Input Range and High Voltage Gain for Fuel Cell Vehicles

Zhang, Yun; Liu, Heyu; Li, Jing; Sumner, Mark; Xia, Changliang

doi:10.1109/tpel.2018.2858443

Cited by 146 publications

(81 citation statements)

References 33 publications

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“…It can be observed that the proposed converter requires lower number of diodes and capacitors as compared with previous studies. 12,28,29,35 The number of capacitors required in proposed converter is more than that of Lou and Ye 30 but has lower number of inductors and lower voltage stress on its components than that of Lou and Ye. 30 Therefore, the proposed converter provides a good trade-off among voltage conversion ratio, number of components, and the current and voltage stress as compared with other topologies.…”

Section: Current Stressmentioning

confidence: 99%

“…8,9 In order to get a high voltage conversion ratio with reduced duty cycle, various topologies have been presented. [10][11][12][13][14][15][16][17] These topologies can be broadly classified into two categories: magnetic-based and magnetic-less converter. A transformer or coupled inductor-based converter can achieve high voltage gain by increasing the turns ratio without the use of excessive duty cycle.…”

Section: Introductionmentioning

confidence: 99%

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A wide load range ZVS high voltage gain hybrid DC‐DC boost converter based on diode‐capacitor voltage multiplier circuit

Priyadarshi

Kar

Karanki

2019

Int Trans Electr Energ Syst

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Summary In this paper, a single‐switch hybrid high voltage gain boost converter topology employing zero‐voltage switching (ZVS) feature is proposed. The proposed converter can achieve high voltage gain with soft switching operation over a wide range of load. The topology is a combination of the Cockcroft‐Walton diode‐capacitor voltage multiplier and a conventional boost converter, which results in a hybrid DC‐DC converter. The diode‐capacitor ladder enables the converter to achieve high voltage gain without a transformer or coupled inductor. Because of its transformerless design, single switch with lower duty cycle requirement, and ZVS feature, the efficiency of the converter is improved significantly. Moreover, due to the input inductor, it is able to provide lower input current ripple and variable fractional voltage gain, which is a key requirement for maximum power point tracking (MPPT) in photovoltaic application. A 480‐W hardware prototype with 48‐V input voltage and 450‐V output voltage is developed, and experimental results are presented to validate the efficacy of the proposed converter. The total achievable efficiency is above 95.4%, in the full load range (80‐480 W).

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Section: Current Stressmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A wide load range ZVS high voltage gain hybrid DC‐DC boost converter based on diode‐capacitor voltage multiplier circuit

Priyadarshi

Kar

Karanki

2019

Int Trans Electr Energ Syst

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“…The low output voltage of energy sources in DC microgrids necessitates application of high-gain single-input single-output (SISO) or multiple-input single-output (MISO) DC-DC converters. [3][4][5][6][7] Three high step-up MISO converters have been presented in previous studies [3][4][5] that take the advantages of modularity, continuous input current, low blocking voltage (BV) on semiconductors and semibidirectional power flow capability. Incapability of direct power transfer from upper order units to the load as well as large current stress (CS) of T 1,1 switch are the main drawbacks of these previous studies.…”

Section: Introductionmentioning

confidence: 99%

“…Incapability of direct power transfer from upper order units to the load as well as large current stress (CS) of T 1,1 switch are the main drawbacks of these previous studies. [3][4][5] The study of Zhang et al 6 presents a unidirectional SISO converter that adopts a diodecapacitor voltage lift cell to produce high step-up capability. Also, another study 7 presents a detailed review of voltage lift methodologies in SISO DC-DC converters.…”

Section: Introductionmentioning

confidence: 99%

A generalized common‐ground single‐switch continuous input‐current boost converter favourable for DC microgrids

Varesi

Ghorbani

2020

Circuit Theory & Apps

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The conventional DC-DC converters have limited voltage gain at moderate duty cycles. In theory, the large duty cycles should be adopted to reach large boosting factors. But in reality, at extreme duty cycles, the effect of parasitic components become dominant, which leads to increased voltage drops on devices, increased total loss and reduced efficiency. This paper proposes a single-switch (requiring single gate-driver circuit) diode-inductor-capacitor (DLC) cell-based basic boost configuration that can solve the abovementioned issues. The employment of single-switch has led to only two operational modes (in continuous conduction mode [CCM]) and easy control strategy. The continuous input-current and large step-up capability make the proposed configuration favourable for renewable or hybrid energy systems in DC microgrids. The simple configuration, modularity, moderate blocking voltage on semiconductors, wide duty-cycle range, large voltage gains at low duty cycles, common-ground between source and load are some profits of suggested configuration. The basic topology can be expanded by addition of DLC cells. Based on comparative analysis, the proposed configuration has larger step-up capability per required components and lesser average normalized blocking voltage on semiconductors compared with other single-switch topologies. This leads to smaller and cheaper structure with fewer losses. The configuration and operational modes of proposed basic topology (and its extended version) have been explained. Then, the design considerations and small-signal modelling of basic topology have been investigated. Finally, the effectiveness and correct operation of proposed topology have been certified by comparative analysis and experimental results.

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“…LEAN energy resources such as photovoltaic (PV) and fuel cell (FC), exhibit low unregulated output voltage, which requires a dc-dc converter with a high voltage step-up ratio [1]- [6]. Several approaches including inductive switching (e.g.…”

Section: Introductionmentioning

confidence: 99%

Efficient High Step-Up Operation in Boost Converters Based on Impulse Rectification

Nikoo

Jafari

Perera

et al. 2020

IEEE Trans. Power Electron.

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Conventional boost converters, while having a high level of simplicity and robustness, are known to have a poor efficiency at high step-up regime. More complicated topologies have been extensively explored to increase the step-up ratio while keeping a high-efficiency, however, an efficient regulated dc-dc power conversion at high step-up regime still remains a challenge. In this work we demonstrate fully soft-switched operation of boost converters based on impulse rectification, which results in an efficient power conversion at very high step-up regime. Contrary to the conventional analysis of boost converters which seeks to minimize conduction and switching losses, our approach considers reactive power as the key parameter limiting efficiency. A theoretical basis for this operation mode enabled an appropriate design resulting in power conversion efficiencies above 90% for voltage gain values of 5, 10, 25, and 50, with a peak efficiency of 97%. The guidelines to design boost converters based on the proposed approach are discussed. The simplicity and high performance of this approach opens new avenues in designing regulated dc-dc converters with a high step-up.

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DC–DC Boost Converter With a Wide Input Range and High Voltage Gain for Fuel Cell Vehicles

Cited by 146 publications

References 33 publications

A wide load range ZVS high voltage gain hybrid DC‐DC boost converter based on diode‐capacitor voltage multiplier circuit

A wide load range ZVS high voltage gain hybrid DC‐DC boost converter based on diode‐capacitor voltage multiplier circuit

A generalized common‐ground single‐switch continuous input‐current boost converter favourable for DC microgrids

Efficient High Step-Up Operation in Boost Converters Based on Impulse Rectification

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