US-20260128192-A1 - CABLE DESIGN FOR ALL-ELECTRIC AIRCRAFT

US20260128192A1US 20260128192 A1US20260128192 A1US 20260128192A1US-20260128192-A1

Abstract

A cable for use in high power delivery and low system mass electric power systems (EPSs) in electrified aircraft is disclosed. In one embodiment, the cable comprises at least one conductor, at least one insulator, and a jacket.

Inventors

Mona Ghassemi
Arian Azizi
Anoy Saha

Assignees

BOARD OF REGENTS, THE UNIVERSITY OF TEXAS SYSTEM

Dates

Publication Date: 20260507
Application Date: 20241030

Claims (1)

1 . A cable for use in high power delivery and low system mass electric power systems (EPSs) in electrified aircraft; the cable comprising: at least one conductor; at least one insulator; and a jacket.

Description

CROSS-REFERENCE TO RELATED APPLICATION This application claims the benefit of U.S. Provisional Application Ser. No. 63/594,338 filed Oct. 30, 2023, by Mona Ghassemi and Arian Azizi, entitled “DESIGN OF A CABLE SYSTEM FOR A HIGH-POWER MVDC AIRCRAFT ELECTRIC POWER SYSTEM” and U.S. Provisional Application Ser. No. 63/594,351 filed Oct. 30, 2023, by Mona Ghassemi, Arian Aziz, and Anoy Saha, entitled “HIGH POWER DENSITY MEDIUM VOLTAGE DIRECT CURRENT CABLES FOR ALL-ELECTRIC AIRCRAFT”, commonly assigned with this application and incorporated herein by reference in their entirety. STATEMENT OF GOVERNMENT INTEREST This invention was made with government support under contract number DE-AR0001677 awarded by the Advanced Research Projects Agency-Energy (ARPA-E). The government has certain rights in the invention. TECHNICAL FIELD This application is directed, in general, to designing cables for high power delivery and low system mass electric power systems (EPSs) in electrified aircraft. BACKGROUND Aircraft electrification yields the next generation of aircraft such as more electric aircraft (MEA) and all electric aircraft (AEA). These aircraft require high power-density and low system-mass electric power systems (EPS). To this end, the voltage of the system must be enhanced to reach medium voltage levels in a few kV ranges. However, using medium voltage (MV) EPS for aircraft exacerbates the challenges of designing aircraft cables such as arc and arc tracking, partial discharges (PD), and thermal management. BRIEF DESCRIPTION OF THE DRAWINGS Reference is now made to the following descriptions taken in conjunction with the accompanying drawings, in which: FIG. 1 is an illustration of a 2D finite element method (FEM) model of an EPS cable according to one or more embodiments of the disclosure; FIG. 2 is an illustration of an equivalent thermal circuit of the cable in the steady-state according to one or more embodiments of the disclosure; FIG. 3 is an illustration of a multi-layer insulation system according to one or more embodiments of the disclosure; FIG. 4 is an illustration of a geometry of a cable according to one or more embodiments of the disclosure; FIG. 5a is an illustration of a multi-layer, multi-function electrical insulation (MMEI) structure for the insulation part of an SC-M22759/87-04 cable according to one or more embodiments of the disclosure; FIG. 5b is an illustration of an MMEI structure for the insulation part of a T-MMEI cable according to one or more embodiments of the disclosure; FIG. 5c is an illustration of an MMEI structure for the insulation part of an SC-T-MMEI cable according to one or more embodiments of the disclosure; FIG. 5d is an illustration of an MMEI structure for the insulation part of an ARC-SC-T-MMEI cable according to one or more embodiments of the disclosure; FIG. 5e is an illustration of an MMEI structure for the insulation part of an PD-T-MMEI cable according to one or more embodiments of the disclosure; FIG. 5f is an illustration of an MMEI structure for the insulation part of an ARC-PD-T-MMEI cable according to one or more embodiments of the disclosure; FIG. 5g is an illustration of an MMEI structure for the insulation part of an IC-60502 cable according to one or more embodiments of the disclosure; FIG. 5h is an illustration of an MMEI structure for the insulation part of an Tefzel cable according to one or more embodiments of the disclosure; FIG. 5i is an illustration of an MMEI structure for the insulation part of an M22759/87-04 cable according to one or more embodiments of the disclosure; FIG. 5j is an illustration of an MMEI structure for the insulation part of an MMEI cable according to one or more embodiments of the disclosure; FIG. 6 is an illustration of a parts of the insulation systems that are placed between two potentials for screened and unscreened cables according to one or more embodiments of the disclosure; FIGS. 7-11 illustrate the electric field norm and the electrical conductivity across the insulation of the designed cables according to one or more embodiments of the disclosure; FIG. 12 is an illustration of a horizontal arrangement of the geometry of the cable according to one or more embodiments of the disclosure; FIG. 13 is an illustration of a vertical arrangement of the geometry of the cable according to one or more embodiments of the disclosure; FIG. 14 is an illustration of an equivalent thermal circuit of the cable in the steady-state according to one or more embodiments of the disclosure; FIG. 15 is an illustration of a flow chart how the ampacity of the bipolar cable system is calculated according to one or more embodiments of the disclosure; FIG. 16 is an illustration of a graph of an example of radiative heat compared to distance between poles of a horizontal arrangement of a cable according to one or more embodiments of the disclosure; FIG. 17 is an illustration of a graph of an example of radiative heat compared to distance between poles