Search results for " Fault tolerant systems"

showing 3 items of 3 documents

FPGA-based concurrent watchdog for real-time control systems

2003

A straightforward and efficient implementation of a custom concurrent watchdog processor for real-time control systems is presented. Emphasis is given to the techniques used for on-line checking the main processor activity without adding overhead, and to the advantages of a field programmable gate array implementation.

Coprocessorbusiness.industryComputer scienceFPGA Fault tolerant systemsSettore ING-INF/01 - ElettronicaProgrammable logic arrayConcurrency controlReal-time Control SystemEmbedded systemControl systemOverhead (computing)Digital controlElectrical and Electronic EngineeringbusinessField-programmable gate arrayElectronics Letters
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A suitable control technique for fault-tolerant converters in Distributed Generation

2011

The penetration of Distributed Generation (DG) in power systems is deeply changing the existing distribution networks which is becoming a very sophisticated and complex systems incorporating both active (generators) and passive systems (distribution systems, converters and loads). The necessary simplification can be obtained dealing with small networks, namely Micro-Grids, reproducing, in a smaller scale, the structure and the problems of large networks including production, transmission and distribution of the electrical energy. In order to achieve an adequate level of reliability, fault-tolerant operations of micro-grids become very important. This result can be achieved only using power …

Engineeringbusiness.industryReliability (computer networking)Topology (electrical circuits)Control engineeringFault toleranceSettore ING-IND/32 - Convertitori Macchine E Azionamenti ElettriciConvertersPower (physics)Capacitors Circuit faults Fault tolerance Fault tolerant systems Leg Mathematical model TopologyElectric power systemTransmission (telecommunications)fault-tolerant convertersDistributed generationElectronic engineeringPWM modulationbusinessfault-tolerant converters; PWM modulation
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Experimental validation of a general model for three phase inverters operating in healthy and faulty modes

2012

The paper presents the experimental verification of a general mathematical model of Voltage Source Inverters (VSI) able to simulate fault conditions and which is also useful for the simulation of fault-tolerant systems for different applications. In general, in the past, the problem of faulty inverters modeling has been addressed specifically by considering faults on the different phases as separate cases. Furthermore, traditional models include only the faulty mode and not the healthy mode, so resulting then not able to predict transient phenomena. The model hereafter presented overcomes this drawback. It was formulated by introducing the concept of “healthy leg binary variables”. Such var…

EngineeringCorrectnessCircuit faults Fault tolerance Fault tolerant systems Integrated circuit modeling Inverters Mathematical model Vectorsbusiness.industryFault toleranceControl engineeringHardware_PERFORMANCEANDRELIABILITYSettore ING-IND/32 - Convertitori Macchine E Azionamenti ElettriciFault (power engineering)Fault indicatorStuck-at faultComputer Science::Hardware ArchitectureThree-phaseTransient (oscillation)Voltage sourcebusinessComputer Science::Operating SystemsComputer Science::Distributed Parallel and Cluster ComputingInternational Symposium on Power Electronics Power Electronics, Electrical Drives, Automation and Motion
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