Open AccessAnalysis of the coupling effects on main feeder in more electrical aircraft
Author(s) -
Lu Zhang
Publication year - 2018
Publication title -
the journal of engineering
Language(s) - English
Resource type - Journals
ISSN - 2051-3305
DOI - 10.1049/joe.2018.0055
Subject(s) - airworthiness , coupling (piping) , interconnection , isolation (microbiology) , electrical wiring , signal (programming language) , electrical impedance , process (computing) , phase (matter) , electrical engineering , automotive engineering , engineering , computer science , mechanical engineering , telecommunications , physics , certification , microbiology and biotechnology , quantum mechanics , political science , law , biology , programming language , operating system
Isolation distance is an important consideration in aircraft wiring for coupling effect. according to electrical wiring interconnect system (EWIS) isolation requirements specified in SAE 50881D and airworthiness regulations CCAR 25.1707, explicit isolation distances are not specified. Aircraft wiring is complex or diverse. In order to evaluate coupling effects between the main feeder and signal wire, the three‐phase‐seven‐wire main feeder with 230 VAC, 250 kVA was chosen as the simulation object. The impedance model of three‐phase feeder is given with which the coupling effects can be analysed in theory at first. The coupling voltage amplitude is the main evaluation index. In the simulation process, the following cases are chosen: different distances between signal wire and main feeder; signal wire lies in the different phase of the main feeder; isolation distance analysis with types of loads; there exits arc faults on main feeder. Based on the analysis of the simulation results, proposed methods to reduce the coupling effects between wires are given. Through the work in this study, it has some guiding significance for wire or cable laying.