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Generic functional modelling of multi-pulse auto-transformer rectifier units for more-electric aircraft applications

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Chinese Journal of Aeronautics 2018年第5期31卷 883-891页

作者： Tao YANG Serhiy BOZHKO Patrick WHEELER Shaoping WANG Shuai WU Department of Electrical and Electronic Engineering University of Nottingham School of Automation Science and Electrical Engineering Beihang University

The Auto-Transformer Rectifier Unit（ATRU） is one preferred solution for high-power AC/DC power conversion in aircraft. This is mainly due to its simple structure, high reliability and reduced k VA ratings. Indeed, the ATRU has become a preferred AC/DC solution to supply power to the electric environment control system on-board future aircraft. In this paper, a general modelling method for ATRUs is introduced. The developed model is based on the fact that the DC voltage and current are strongly related to the voltage and current vectors at the AC terminals of ATRUs. In this paper, we carry on our research in modelling symmetric 18-pulse ATRUs and develop a generic modelling technique. The developed generic model can study not only symmetric but also asymmetric ATRUs. An 18-pulse asymmetric ATRU is used to demonstrate the accuracy and efficiency of the developed model by comparing with corresponding detailed switching SABER models provided by our industrial partner. The functional models also allow accelerated and accurate simulations and thus enable whole-scale more-electric aircraft electrical power system studies in the future.

关键词： Asymmetric transformer functional modelling More-Electric Aircraft Multi-pulse rectifier Transformer rectifier unit

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Claire-Siti:an Intelligent Intermodal Supervisor System of Surface Networks

Claire-Siti:an Intelligent Intermodal Supervisor System of S...

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第一届中国智能交通年会

作者： G Scemama O Carles

New tendencies concerning the management of surface transport net- works require: -the monitoring and the evaluation of level of services indicators which are more and more imposed by quality normalisation and transport policies, -the complex diagnosis and decision making to face the increasing of disturbances and unusual events in the transport operation, -the global and intermodal mobility management with the consideration of energy and pollution impact (sustainable mobility). This paper aims at presenting the CLAIRE-SITI,an intelligent intermodal super- visor system,which tries to give an answer to mentioned above requirements, being able to manage simultaneously and in real-time the operation of multiple surface networks (road,freeways,public bus,tram,railways net work) giving a diagnosis and aids to decision making in disturbed conditions. Initially designed as a congestion supervisory system for road network,the CLAIRE system has been improved mainly in the framework of the integrated project of the Toulouse *** advanced functionalities have been designed and implemented in various international programs (disturbance monitoring and treatment,user information,cooperative management,distributed event manag- er,case-based observatory and performance reporting). The system is base on a generic transport network data model and reasons upon a generalised concept of a supervised state that can associated with entities such as nodes,arcs,routes,transport unit (***) based on indicators of any types defined externally for which the space-time evolution is monitored by the system. The new CLAIRE-SITI system is currently implemented in operational context in Toulouse and in Brussels near the STIB multimodal public transport operator (bus,metro and tram) and also in Paris at the INRETS research Institute in a la- boratory environment dealing with both real and simulated data.A collaboration program is on going in the US to test CLAIRE in Los Angeles and Hous

关键词： Intermodality multimodal transport network modelling conceptual data model functional modelling multimodal network supervisor CLAIRESITI

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ACTIF,A Design Assistance for Interoperable Transportation Systems in France

ACTIF,A Design Assistance for Interoperable Transportation S...

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第一届中国智能交通年会

作者： Jean-Francois JANIN

The ACTIF project was launched in 2001 by the French Ministry of Transport to build a national frame for the deployment of ITS around the coun- *** a first phase of modelisation inspired by the foreign architectures (USA,Japan,European) it appeared that a specific method was needed to as- sist the authorities in charge of the deployment of real systems to precise their needs and their organisation.A tool has been develop to create architectures ap- propriate to these *** is now a combination of a conceptual model describing the whole domain of ITS,at a high level but including all modes of transport,a method to use it and a set of tools available without charge from the web site ***-actif,*** method is illustrated by case studies in vari- ous domains.

关键词： Architecture Interoperability Intermodality multimodal transport functional modelling ACTIF road information advanced traveller information system enforcement dissemination

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