SYLENCE: Advanced SYstem LEvel Conducted Emission analysis and simulation for EMC
Responsible:
Collaboration with Academic Institutions and Research Centres
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Start date: 2009-01-01
Length: 24 months
Project abstract
This project is funded by the European Space Agency (ESA) and deals with the development and validation of a simulation tool for system-level conducted emission (CE) analysis of satellite power systems. The main objective is the development of reliable prediction models enabling engineers to evaluate effects of CE interference in on-flight systems, so that potential EMC problems can be timely identified.
To this aim, two technical issues are investigated:
(a) modeling of dc/dc converters as noise sources;
(b) modeling of noise propagation along wiring harnesses.
Specifically, a behavioral model of dc/dc converters is derived by measurements performed at unit-level in controlled test setups, and power cables are modeled through multiconductor-transmission-line theory.
The dc/dc converter and wiring harness models are then integrated in a system-level simulation tool handling the analysis of CE among the various units and subsystems of the satellite. Such system-level analysis tools will pave the way for the reduction of design iterations and expensive test campaigns in the Space industry, with obvious cost benefits, while safeguarding and possibly increasing reliability and built-in design compatibility.
In particular, the SYLENCE simulation tool provides a valuable and crucial support for:
(a) the definition of unit-level requirements from system-level technical performances,
(b) the reliability assessment of EMC at an early-design stage,
(c) trade-off analyses at system level.
To this aim, two technical issues are investigated:
(a) modeling of dc/dc converters as noise sources;
(b) modeling of noise propagation along wiring harnesses.
Specifically, a behavioral model of dc/dc converters is derived by measurements performed at unit-level in controlled test setups, and power cables are modeled through multiconductor-transmission-line theory.
The dc/dc converter and wiring harness models are then integrated in a system-level simulation tool handling the analysis of CE among the various units and subsystems of the satellite. Such system-level analysis tools will pave the way for the reduction of design iterations and expensive test campaigns in the Space industry, with obvious cost benefits, while safeguarding and possibly increasing reliability and built-in design compatibility.
In particular, the SYLENCE simulation tool provides a valuable and crucial support for:
(a) the definition of unit-level requirements from system-level technical performances,
(b) the reliability assessment of EMC at an early-design stage,
(c) trade-off analyses at system level.
Project results
- F. Grassi, S. A. Pignari, and J. Wolf, "Channel characterization and EMC assessment of a PLC system for spacecraft DC differential power buses," IEEE Trans. Electromagn. Compat., vol. 53, no. 3, pp. 664 - 675, Aug. 2011.
- L. D. Bellan, F. Marliani, S. A. Pignari, and G. Spadacini, "Spectral analysis of conducted emissions of DC/DC converters," in Proc. 2010 IEEE Int. Symp. on Electromagn. Compat., Fort Lauderdale, FL, USA, July 25-30, 2010, pp. 490-494.
- G. Spadacini, D. Bellan, S. A. Pignari, R. Grossi, and F. Marliani, "Prediction of conducted emissions of DC/DC converters for space applications," in Proc. APEMC 2010, Asia-Pacific Int. Symp. on Electromagn. Compat., Beijing, China, April 12-16, 2010, pp. 810-813.
- S. Alia, D. Bellan, R. Grossi, S. A. Pignari, and G. Spadacini, "Behavioral modeling of DC/DC converter conducted emissions," in Proc. 2009 ESA Workshop on Aerospace EMC, Firenze, Italy, March 30 - April 1, 2009, Session 8, Paper 2, pp. 1-6.
