Application of Soft-Switching Cell With Inherent Redundancy Properties for Enhancing the Reliability of Boost-Based DC–DC Converters

Faraji, Rasoul; Ding, Lei; Rahimi, Tohid; Kheshti, Mostafa

doi:10.1109/tpel.2021.3081722

Cited by 31 publications

(10 citation statements)

References 44 publications

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“…The inductors' current, the voltage of the capacitors, the voltage of inductors, the current of the capacitors, the current of the switch, the current of the diodes, and voltage of the semiconductor-based components have been extracted as the simulation results (Figure 12). The extracted outcomes conclude the average voltage of the capacitors and FIGURE 12 The simulation results: (a) the first switch current, (b) the first diode current, (c) the second diode current, (d) the third diode current, (e) the forth diode current, (f) the fifth diode (g) the sixth diode current, (h) the first switch voltage, (i) the first diode voltage, (j) the second diode voltage, (k) the third diode voltage, (l) the forth diode voltage, (m) the fifth diode voltage, and (n) the sixth diode voltage the average current of the inductors as followed:…”

Section: Simulation and Experimental Outcomesmentioning

confidence: 96%

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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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Section: Simulation and Experimental Outcomesmentioning

confidence: 96%

“…The voltage gain is low and insufficient. Therefore, new high gain topologies are required [1][2][3][4][5][6][7][8][9][10][11][12][13][14].…”

Section: Introductionmentioning

confidence: 99%

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

Mahdizadeh

Gholizadeh

Shahrivar

et al. 2022

IET Power Electronics

View full text Add to dashboard Cite

show abstract

“…Thus, V in2 in this mode acts as the output. By applying the volt-second balance principle on L M (5), the voltage gain is achieved (6).…”

Section: ) Mode Imentioning

confidence: 99%

“…Besides, by increasing the switching frequency, the size of passive components can be reduced. However, switching loss increases and imposes larger size heat-sinks to dissipate the heat [6], [7]. To meet the high switching frequency and mitigating the switching loss, softswitching methods must be employed [8].…”

Section: Introductionmentioning

confidence: 99%

Efficient Multi-Port Bidirectional Converter With Soft-Switching Capability for Electric Vehicle Applications

et al. 2021

Self Cite

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In this paper, to solve the hard-switching operation problem and the lack of existing a bidirectional power flow path from output to the energy storage device of the conventional three-port converter, a new soft-switched bidirectional multi-port converter is proposed. A large number of switches, different power flow paths which vary in each operating mode, and changing the outputs and their power levels are some of the challenges to provide soft-switching conditions in multi-port converters. In the proposed converter, by changing the topology of the conventional three-port converter, the bidirectional power exchangeability between ports is provided. Moreover, a soft-switching cell is added, which can operate independently from the output power levels. Less number of components with low volume is one of the important features of this multi-port converter. Due to the soft-switching operation of the proposed converter, the size of passive components and heat-sink is reduced. In addition, by the use of coupled inductors in the soft-switching cell, only one magnetic core is used and thus, single-stage power conversion is achieved and conduction loss is reduced. In this paper, the converter operating modes are presented, and design considerations are discussed. Finally, a 200 W-200 V prototype is implemented, and the theoretical analysis is validated by the experimental results.INDEX TERMS Multi-port converter, dc-dc converter, soft-switching, electric vehicle, hybrid power systems.

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“…For example, the reliability assessment of a modular multilevel converter was done in [4] based on the MIL-HDBK-217F [5]. Similarly, in [6], the MIL-HDBK-217 is used for the reliability assessment of DC-DC boost converters. However, the main drawback of using this handbook for reliability assessment is ignoring the mission profiles.…”

Section: Introductionmentioning

confidence: 99%

Employing the Generative Adversarial Networks (GAN) for Reliability Assessment of Converters

Davoodi

Peyghami

Yang

et al. 2021

2021 IEEE Energy Conversion Congress and Exposition (ECCE)

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Mission profiles are widely used for the reliability analysis of power converters. Typically, to assess the converter reliability, long-term (e.g., one year) mission profiles are adopted, and it is assumed that the profiles will be repeated in future years. However, due to mission profile uncertainties, the assumption can introduce considerable errors in the estimated reliability. In this paper, the errors introduced by the above assumption are studied in detail. Furthermore, to tackle this challenge, the paper proposes using the Generative Adversarial Networks (GAN) to generate unique mission profile scenarios that capture the temporal and probabilistic properties of the real profiles. In this regard, the effectiveness of using the GANgenerated profiles to improve the accuracy of the estimated reliability is demonstrated.

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Application of Soft-Switching Cell With Inherent Redundancy Properties for Enhancing the Reliability of Boost-Based DC–DC Converters

Cited by 31 publications

References 44 publications

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

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

Efficient Multi-Port Bidirectional Converter With Soft-Switching Capability for Electric Vehicle Applications

Employing the Generative Adversarial Networks (GAN) for Reliability Assessment of Converters

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