Electric drive systems with long feeder cables. Issue 1 (5th December 2019)

• Record Type: Journal Article
• Authors: Xie, Patrick; Vakil, Gaurang; Gerada, Chris
• Is Part Of: IET electric power applications. Volume 14:Issue 1(2020)
• Page Start: 16
• Page End: 30
• Publication Date: 2019-12-05
• Subjects: power cables -- electromagnetic interference -- surges -- stators -- electric drives -- corona -- invertors -- machine insulation; electric drive systems -- long feeder cables -- remote operated vehicles -- inhospitable environment -- inaccessible environment -- cable‐machine surge impedance mismatch -- high‐amplitude -- high‐frequency voltage oscillations -- machine terminals -- high‐electromagnetic interference -- long cable feeders -- long feeder cable loading -- inverter switching characteristics; Electric power -- Periodicals; Electric power systems -- Periodicals; 621.305
• DOI: 10.1049/iet-epa.2018.5507
• Languages: English
• ISSNs: 1751-8660

Abstract

Abstract : Electric drive systems with long feeder cables connecting inverter and machine are used for oil exploration, mining, remote operated vehicles, industrial, and aerospace applications. Though this topology has the advantage of providing a better operating environment and easier serviceability for the inverter if the machine is located in an inhospitable and inaccessible environment, it does come with its own drawbacks. Steep‐fronted switched voltages and cable‐machine surge impedance mismatch can lead to high‐amplitude, high‐frequency (HF) voltage oscillations along the feeder cable, at the machine terminals, and throughout the machine's stator windings. These effects can cause high‐electromagnetic interference, corona discharge, insulation failure in the feeder cable and machine's stator windings, common‐mode, differential‐mode, and bearing currents. This study discusses the HF issues relating to electric drive systems with long cable feeders. HF models for feeder cable and machine to analyse these phenomena are presented. The effects on long feeder cable loading on inverter switching characteristics are discussed. Methods to mitigate high‐amplitude and HF oscillations in such systems are shown.