Showing papers by "Thales (Netherlands) published in 2017"
01 Aug 2017
TL;DR: The rule-based approach, i.e. following electromagnetic interference standards, is the basic methodology assumed to result in electromagnetic compatible systems operating properly in their intended environment.
Abstract: The rule-based approach, i.e. following electromagnetic interference standards, is the basic methodology assumed to result in electromagnetic compatible systems operating properly in their intended environment. For complex systems we need a smarter approach, based on assessing and controlling the electromagnetic risks. This risk-based approach is described, and applied to naval ships.
21 citations
01 Sep 2017
TL;DR: In this article, an original method using radiofrequency analysis is used to demonstrate that power lines act as antennas for PLC frequencies, as if the PLC system was a radiofrequency system.
Abstract: The nature of the Power Line Communication (PLC) equipment is complex because it is considered as an information equipment for Electro-Magnetic Compatibility (EMC) standardization, but it is used to inject High-Frequency (HF) and Very High Frequency (VHF) frequency signals on the existing power network which is not designed to guide these frequencies. This PLC system issue leads to some difficulty to finalize EMC standardization of PLC equipment. This paper shows some EMC issues due to the parasitic radiation of HF and VHF PLC systems. An original method using radiofrequency analysis is used to demonstrate that power lines act as antennas for PLC frequencies, as if the PLC system was a radiofrequency system. So, we can define the PLC system as a “not intended radiofrequency system”, i.e. a family product which have to comply not only with EMC standards but also with Radio Equipment Directive (RED) system.
01 Sep 2017
TL;DR: The lack of equipment available on the market which is certified for maritime, or even naval, environments, makes it hard for shipbuilders to deliver (naval) ships that comply with maritime ElectroMagnetic Compatibility (EMC) regulation as discussed by the authors.
Abstract: The lack of equipment available on the market which is certified for maritime, or even naval, environments, i.e. in accordance with IEC 60533 [1], makes it hard for shipbuilders to deliver (naval) ships that comply with maritime ElectroMagnetic Compatibility (EMC) regulation. Following the conventional rule-based approach, i.e. implementing standards, results in a deadlock or very costly dedicated hardening of equipment. This problem is acknowledged in the Lloyd's Register Naval Rules and obviated by a risk based electromagnetic compatibility approach. This paper points out the electromagnetic risks identified and mitigated by the technical committee that wrote the IEC 60533, and provides a risk based approach to deal with them.