Experimental setup to evaluate creepage distance requirements for shipboard power systems

Damle, Tushar; Park, Chanyeop; Ding, Jeffrey; Cheetham, Peter; Bosworth, Matthew; Steurer, M.; Cuzner, Robert; Graber, Lukas

doi:10.1109/ests.2019.8847827

Cited by 11 publications

(6 citation statements)

References 23 publications

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“…While a vast amount of knowledge has been generated through these component-level studies, further studies must be conducted to establish dielectrics and electrical insulation guidelines for all electric ships. A well-established guideline should be developed accounting for the fact that shipboard power systems are ungrounded [125][126][127] and that the atmospheric conditions are significantly different than terrestrial power systems due to the humidity and salinity of ship atmosphere [128].…”

Section: Insulating Materials In More-electric Shipsmentioning

confidence: 99%

Insulating materials for realising carbon neutrality: Opportunities, remaining issues and challenges

Yang

et al. 2022

High Voltage

Self Cite

115

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The 2050 carbon‐neutral vision spawns a novel energy structure revolution, and the construction of the future energy structure is based on equipment innovation. Insulating material, as the core of electrical power equipment and electrified transportation asset, faces unprecedented challenges and opportunities. The goal of carbon neutral and the urgent need for innovation in electric power equipment and electrification assets are first discussed. The engineering challenges constrained by the insulation system in future electric power equipment/devices and electrified transportation assets are investigated. Insulating materials, including intelligent insulating material, high thermal conductivity insulating material, high energy storage density insulating material, extreme environment resistant insulating material, and environmental‐friendly insulating material, are categorised with their scientific issues, opportunities and challenges under the goal of carbon neutrality being discussed. In the context of carbon neutrality, not only improves the understanding of the insulation problems from a macro level, that is, electrical power equipment and electrified transportation asset, but also offers opportunities, remaining issues and challenges from the insulating material level. It is hoped that this paper envisions the challenges regarding design and reliability of insulations in electrical equipment and electric vehicles in the context of policies towards carbon neutrality rules. The authors also hope that this paper can be helpful in future development and research of novel insulating materials, which promote the realisation of the carbon‐neutral vision.

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Section: Insulating Materials In More-electric Shipsmentioning

confidence: 99%

Insulating materials for realising carbon neutrality: Opportunities, remaining issues and challenges

Yang

et al. 2022

High Voltage

Self Cite

115

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“…It is imperative to mention that the integration of the planar transformers in the gate driver card was achieved in compliance to electrical insulation standards. Clearance (short-est distance through air between two conductive parts) and creepage (shortest distance over surface between two conductive parts) measurements were implemented and considered [44]. Moreover, the insulation between layer stacks of the PCB was respected, noting that this is not very restraining due to the utilization of rigid FR4 epoxy dielectric material which can tolerate 20 kV/mm before breakdown.…”

Section: Pulse Transformer Schemementioning

confidence: 99%

“…Energies 2021, 14, x FOR PEER REVIEW 8 of 16 considered [44]. Moreover, the insulation between layer stacks of the PCB was respected, noting that this is not very restraining due to the utilization of rigid FR4 epoxy dielectric material which can tolerate 20 kV/mm before breakdown.…”

Section: Pulse Transformer Model Simulation Analysismentioning

confidence: 99%

Investigating the Shielding Effect of Pulse Transformer Operation in Isolated Gate Drivers for SiC MOSFETs

et al. 2021

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Wide-bandgap technology evolution compels the advancement of efficient pulse-width gate-driver devices. Integrated enhanced gate-driver planar transformers are a source of electromagnetic disturbances due to inter-winding capacitances, which serve as a route to common-mode(CM) currents. This paper will simulate, via ANSYS Q3D Extractor, the unforeseen parasitic effects of a pulse planar transformer integrated in a SiC MOSFET gate-driver card. Moreover, the pulse transformer will be ameliorated by adding distinctive shielding layers aiming to suppress CM noise effects and endure high dv/dt occurrences intending to validate experimental tests. The correlation between stray capacitance and dv/dt immunity results after shielding insertion will be reported.

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“…This creates the need for extensive quality assurance. The creepage distance, which this study significantly contributes to determining, is described as the shortest distance along the surface of a solid insulating material between two conductors at different voltage potentials [12]. The creepage distance is similar to the shortest distance in air between two conductors of different potential, and this is defined as the clearance distance.…”

Section: Introductionmentioning

confidence: 96%

“…To prevent surface flashover or insulation breakdown, both of these features must not fall below the required and prescribed limits depending on the application [12]. In the field of electrical drives, specified requirements need to be ensured, e.g., to prevent parts from explosion [12,13].…”

Section: Introductionmentioning

confidence: 99%

Creepage Distance Estimation of Hairpin Stators Using 3D Feature Extraction

Grambow,

Hinz,

Bonk

et al. 2023

Metrology

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The increasing demand for electric drives challenges conventional powertrain designs and requires new technologies to increase production efficiency. Hairpin stator manufacturing technology enables full automation, and quality control within the process is particularly important for increasing the process capacity, avoiding rejects and for safety-related aspects. Due to the complex, free-form geometries of hairpin stators and the required short inspection times, inline reconstruction and accurate quantification of relevant features is of particular importance. In this study, we propose a novel method to estimate the creepage distance, a feature that is crucial regarding the safety standards of hairpin stators and that could be determined neither automatically nor accurately until now. The data acquisition is based on fringe projection profilometry and a robot positioning system for a highly complete surface reconstruction. After alignment, the wire pairs are density-based clustered so that computations can be parallelized for each cluster, and an analysis of partial geometries is enabled. In several further steps, stripping edges are segmented automatically using a novel approach of spatially asymmetric windowed local surface normal variation, and the creepage distances are subsequently estimated using a geodesic path algorithm. Finally, the approach is examined and discussed for an entire stator, and a methodology is presented that enables the identification of implausible estimated creepage distances.

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Experimental setup to evaluate creepage distance requirements for shipboard power systems

Cited by 11 publications

References 23 publications

Insulating materials for realising carbon neutrality: Opportunities, remaining issues and challenges

Insulating materials for realising carbon neutrality: Opportunities, remaining issues and challenges

Investigating the Shielding Effect of Pulse Transformer Operation in Isolated Gate Drivers for SiC MOSFETs

Creepage Distance Estimation of Hairpin Stators Using 3D Feature Extraction

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