High Temperature Insulation Materials for DC Cable Insulation—Part II: Partial Discharge Behavior at Elevated Altitudes

Shahsavarian, Tohid; Li, Chuanyang; Baferani, Mohamadreza Arab; Ronzello, JoAnne; Cao, Yang; Wu, Xin; Zhang, Di

doi:10.1109/tdei.2020.009166

Cited by 16 publications

(11 citation statements)

References 16 publications

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“…A comprehensive study of partial discharge in onboard electrical machines was conducted, and possible solutions ranging from electrical machines to power electronic devices were provided in [92]. In addition, the effect of partial discharge on high-temperature insulation materials for dc cables was studied and presented in [93]. The partial discharge phenomenon in the next generation of aircraft has evidently attracted the interest of an increasing number of researchers.…”

Section: O U T L O O Kmentioning

confidence: 99%

The More-Electric Aircraft and Beyond

2023

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Aviation is a significant contributor to greenhouse gas (GHG) emissions in the transportation sector. As the adoption of electric cars increases and GHG emissions due to other modes of transport decrease, the impact of air travel on environmental pollution has become even more significant. To reduce pollution and maintenance, and ensure cheaper and more convenient flights, industry and academia have directed their efforts toward aircraft electrification. Considering various types of aircraft, several frameworks have been proposed: more-electric aircraft (MEA), hybrid electric aircraft (HEA), and all-electric aircraft (AEA). In the MEA framework, propulsion is generated by a conventional jet engine; however, all secondary systems (hydraulic, pneumatic, and actuation) are electrified. By further increasing electrification, electric motors can provide propulsion with the electric power supplied by the conventional engine (i.e., HEA) or from electrical energy storage (i.e., AEA). Power electronics and electrical machines play a key role in this scenario in which electric power must be efficiently generated, distributed, and consumed to satisfy extremely high requirements of aviation safety. This article provides an overview of recent advancements in aircraft electrification, and trends and future developments referenced to the global aviation roadmap. KEYWORDS | Electric transportation; more-electric aircraft (MEA); power electronics. I. I N T R O D U C T I O NAir transportation is the enabler of modern globalization and the backbone of mail and goods transportation.

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Section: O U T L O O Kmentioning

confidence: 99%

The More-Electric Aircraft and Beyond

2023

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“…Therefore, such a system requires further study of the insulation of conductors and electrical machines working at cruising altitudes of the range of 10,000 to 15,000 m. The PD is dependant of two main parameters: the electric field and the density of the surrounding air. The former is function of the thickness of the insulator while the latter is defined by the ambient temperature and pressure [95], [96], [97], thus, the atmospheric conditions should be deeply studied.…”

Section: Safety and High Voltage At High Altitudementioning

confidence: 99%

Review of High Power and High Voltage Electric Motors for Single-Aisle Regional Aircraft

et al. 2022

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This paper presents a review of the state of the art in electric propulsion for regional aircraft in the MW range. The implications surrounding the implementation of this technology, such as the need of high-power density or the use of high-voltage at high-altitude, are presented. Along with the challenges, the available technologies to face them are reviewed. Those are, as follows, the emerging new motor topologies for this purpose, the winding technologies, the materials employed for electric motors for aircraft propulsion and the ground-breaking use of high-temperature superconductors (HTS) as a high-power density enabler. Finally, a conclusion is presented gathering the main ideas of the paper.INDEX TERMS Aircraft propulsion, electric motor, high-power, high-temperature superconductor, high-voltage.

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“…AC PD circuit was equipped with a rectifier including the diode and smoothing capacitor set (90.4 nF) for rectification with negligible ripples [12,14]. Figure 1 shows the PD circuit and test procedure followed in each test.…”

Section: Pd Test Circuit and Test Proceduresmentioning

confidence: 99%

“…Figure 1 shows the PD circuit and test procedure followed in each test. We have already introduced different PD pattern representations based on time and frequency information of recorded PD data for the DC PD test [12,14]. However, in this paper, other PD parameters such as PD count, and accumulative PD pulse magnitude (i.e.…”

Section: Pd Test Circuit and Test Proceduresmentioning

confidence: 99%

“…Authors have already studied the PD behaviour of fluoropolymer-based insulated wires under AC and DC voltage at ambient and low pressure [12]. In addition, comprehensive investigations of the electrical properties of high-temperature materials including PI, PTFE, PEEK, FEP and ETFE have been thoroughly conducted and presented [13][14][15]. The non-linear conductivity dependency of these materials discussed in our previous work [13], however, characteristic of PDs initiated on the insulation surface due to non-uniform electric field intensity, as well as the temperature effect on this phenomenon, remain to be investigated thoroughly.…”

Section: Introductionmentioning

confidence: 99%

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Temperature‐dependent partial discharge characteristics of high temperature materials at DC voltage for hybrid propulsion systems

Shahsavarian

Lents

et al. 2021

High Voltage

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The safe and reliable operation of insulation material used in key high voltage components under extreme environmental conditions represents the major concerns for manufacturers and operators of More Electric Aircrafts (MEA). Surface discharge occurring in high current carrying components in DC power system diminishes the insulation material's performance and life, especially at high-temperature conditions. Here, the surface discharge behaviour of two commonly used high-temperature insulation materials, ethylene-tetrafluoroethylene (ETFE) and polyetheretherketone (PEEK) is studied at different temperatures under ramp and DC voltages. Extracted partial discharge (PD) features are presented and the impact of voltage polarity on surface discharge propagation is discussed. Our studies reveal that, while both materials exhibit non-linear PD behaviour with respect to their electrical conductivity, ETFE generally shows PDs with higher intensity at high temperature above 100°C with a higher possibility of surface discharge due to its lower permittivity. Overall, the PD mechanism in high-temperature, DC voltage applications is explored, and a basis for the selection of high-temperature PD suppressing materials is developed.This is an open access article under the terms of the Creative Commons Attribution-NonCommercial-NoDerivs License, which permits use and distribution in any medium, provided the original work is properly cited, the use is non-commercial and no modifications or adaptations are made.

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High Temperature Insulation Materials for DC Cable Insulation—Part II: Partial Discharge Behavior at Elevated Altitudes

Cited by 16 publications

References 16 publications

The More-Electric Aircraft and Beyond

The More-Electric Aircraft and Beyond

Review of High Power and High Voltage Electric Motors for Single-Aisle Regional Aircraft

Temperature‐dependent partial discharge characteristics of high temperature materials at DC voltage for hybrid propulsion systems

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