Comprehensive Analytics for Reliability Evaluation of Conventional Isolated Multiswitch PWM DC–DC Converters

Tarzamni, Hadi; Esmaeelnia, Farhad Panahandeh; Fotuhi‐Firuzabad, Mahmud; Tahami, Farzad; Tohidi, Sajjad; Dehghanian, Payman

doi:10.1109/tpel.2019.2944924

Cited by 26 publications

(17 citation statements)

References 24 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Next, C r could be selected by knowing the required resonance frequency and the obtained value of L r using (1). The magnetizing inductance must be calculated so that the magnetizing current can fully charge and discharge the parasitic output capacitance (C oss ) of the primary semiconductor during the dead time (T dt ) in the primary switches's gating signals as in (2). Additionally, Si FDMS86180 and SiC SCT2120AF MOSFETs are employed as the primary-and secondary-side semiconductors, respectively.…”

Section: B Isolated Dc-dc Buck-boost Convertermentioning

confidence: 99%

“…With the significant spread of renewable solar energy worldwide to preserve the environment and mitigate climate changes, the research community has carefully considered the reliability of power electronic converters at the design phase (i.e., design for reliability (DFR)). In addition, it is important to continue assessment and monitoring of the reliability of the power converter over time to ensure that the system works successfully [2].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Reliability Evaluation of Isolated Buck-Boost DC-DC Series Resonant Converter

Bakeer

Chub

Shen

2022

IEEE Open J. Power Electron.

View full text Add to dashboard Cite

This paper investigates the reliability of an isolated buck-boost DC-DC converter (IBBC) based on the configuration of a series resonant converter (SRC). Two approaches are employed to predict the IBBC reliability, which are based on the MIL-HDBK-217F handbook and FIDES guide. The latter approach can take into account how the failure rate of the converter components based on the physics of failure is influenced by a varying yearly mission profile. To do this, the thermal loading of each IBBC component is obtained, taking into account the photovoltaic (PV) mission profile of the solar irradiance and ambient temperature. In such a case, the PV module is operating at the maximum power point (MPP) and the IBBC transfers this power into the DC microgrid (MG). Second, the componentlevel failure rate is calculated with both reliability assessment approaches, to evaluate the converter-level failure rate. Therefore, the converter reliability can be defined while taking the serial reliability connection of the converter components into account. The reliability analysis is carried out using a cloud Python engine installed and running in a Google Colaboratory notebook. The results indicate that the primary semiconductors are the most vulnerable component in the IBBC. The B10 lifetime of the casestudy IBBC calculated using the MIL-HDBK-217F and FIDES approaches is 14.80 and 23.20 years, respectively. This indicates that, when compared to the methodology from the MIL-HDBK-217F handbook, the approach from the FIDES guide can provide a more accurate prediction for the IBBC lifespan considering the real field mission profile.

show abstract

Section: B Isolated Dc-dc Buck-boost Convertermentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Reliability Evaluation of Isolated Buck-Boost DC-DC Series Resonant Converter

Bakeer

Chub

Shen

2022

IEEE Open J. Power Electron.

View full text Add to dashboard Cite

show abstract

“…Among main design features of power electronic DC–DC converters, 1–3 achieving high output voltage gain is of high importance 4,5 . This capability shows its role in dominant applications such as uninterruptible power supplies use as backup for energy systems, renewable energy systems, and hybrid electrical vehicles 6 .…”

Section: Introductionmentioning

confidence: 99%

Operation and design analysis of an interleaved high step‐up DC–DC converter with improved harnessing of magnetic energy

Sabahi

Tarzamni

Kolahian

2021

Circuit Theory & Apps

Self Cite

View full text Add to dashboard Cite

In this paper, a new interleaved DC-DC converter based on a coupled and a single input inductor is proposed. The suggested high step-up converter utilizes various inductive and capacitive methods to transfer magnetic energy more efficiently. The output voltage is regulated with the switches' duty cycle and the coupled inductor (CI) turns ratio, which provide a wide output voltage range. Interleaving improves the converter reliability, employs both the first and third areas of CI's B-H plane, cancels DC component of the CI, and reduces the input current ripple of the proposed converter with twice switching frequency. Utilization of two output ports for voltage stress and ripple reduction in each port, recycling the stored energy of inductances in both forward and flyback mechanisms, alleviation of switch voltage spikes, operation without circulating current, high power density, independency of switch voltage stress to the CI turns ratio, and continuous input current can be mentioned as other features. In this paper, continuous and discontinuous conduction modes' steady-state analytics, power loss calculations, and design procedure of the proposed converter are followed with comprehensive comparisons to evaluate the capabilities. Eventually, experimental results are presented to validate theoretical calculations.

show abstract

“…Therefore, the same elementary cells can be modularly implemented in the power converter stage with much easier scalability regarding power and voltage ratings. In such a way, the inherent dc-fault blocking capability can be acquired naturally since the intermediary ac power stage is embedded in the isolated dc-dc stage [12][13]. Moreover, the intermediary transformer provides high flexibility for connecting two dc buses with large voltage differences.…”

Section: Introductionmentioning

confidence: 99%

Unified Fast-Dynamic Direct-Current Control Scheme for Intermediary Inductive AC-Link Isolated DC-DC Converters

Hou

Quan

et al. 2021

IEEE Open J. Power Electron.

View full text Add to dashboard Cite

The isolated dc-dc converters with middle inductive AC links dc-dc converter have been extensively studied in modern energy conversion applications for safety and reliability, especially those featuring intermediary inductive ac-link (I 2 ACL) configurations such as full-bridge dc-dc converter and dualactive-bridge (DAB). However, up to now, the dynamic equivalence in these I 2 ACL type converters has not been systematically revealed. To fill such a gap, in this paper, the existing I 2 ACL isolated dc-dc converters are reviewed thoroughly, including unidirectional type and bidirectional type. Then, the general current transferred features of these two groups are analyzed, respectively, and the transferred current during the transient process is just influenced by the middle inductance little. So, the I 2 ACL isolated dc-dc converter can be regarded as the first-order converter. Based on the discovered general characteristic, a unified fast-dynamic direct-current (FDDC) control scheme is proposed for improving the dynamic performance of these I 2 ACL isolated dc-dc converters. Such a scheme can also facilitate the uniform control design for existing or emerging new topologies with the same electrical equivalence. Moreover, the specialized design principles of the PI parameters in the unified FDDC control method are also presented. Finally, to verify the universality and feasibility of the proposed general FDDC control strategy, both simulation and experiment results are presented with demonstration examples, e.g. full-bridge type, DAB-type, and the three-phase DAB type dc-dc converters.

show abstract

Comprehensive Analytics for Reliability Evaluation of Conventional Isolated Multiswitch PWM DC–DC Converters

Cited by 26 publications

References 24 publications

Reliability Evaluation of Isolated Buck-Boost DC-DC Series Resonant Converter

Reliability Evaluation of Isolated Buck-Boost DC-DC Series Resonant Converter

Operation and design analysis of an interleaved high step‐up DC–DC converter with improved harnessing of magnetic energy

Unified Fast-Dynamic Direct-Current Control Scheme for Intermediary Inductive AC-Link Isolated DC-DC Converters

Contact Info

Product

Resources

About