Search results for "Linear congruential generator"

showing 10 items of 15 documents

An electromagnetic generator for MAGLEV transportation systems

2015

The fundamental idea of this paper is to use the distribution theory to analyze linear generators in order to include in the mathematical model both ideal a non ideal features. This paper shows how the use of distribution theory can be used in order to establish a mathematical model able to describe both the ordinary working condition of a linear generator for MAGLEV systems as well the role of the unavoidable irregularities and non-ideal features.

EngineeringPower SystemSettore ING-IND/11 - Fisica Tecnica AmbientaleIdeal (set theory)Distribution (number theory)Renewable Energy Sustainability and the Environmentbusiness.industryEnergy Engineering and Power TechnologyControl engineeringElectromagnetic generatorSettore ING-IND/32 - Convertitori Macchine E Azionamenti ElettriciLinear Synchronous GeneratorElectric MachineWorking conditionLinear congruential generatorMaglevbusiness2015 International Conference on Renewable Energy Research and Applications (ICRERA)
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Design of Bilateral Switched Reluctance Linear Generator to Convert Wave Energy: Case Study in Sicily

2013

The aim of this work is a case study of the adaptation bilateral switched reluctance linear generator to the exploitation of energy of the sea. This type of generator can be used to convert wave energy in electrical energy. In this paper we present an analytical sizing and FEM simulation. As for the results, analysis of the data extracted through the simulations it was possible to calculate the emf. The emf was calculated in two cases of motion of the slider: first hypothesis has set the constant speed while the second is a variable speed according to the law of an oscillatory motion of the sea.

EngineeringWork (thermodynamics)business.industryElectric potential energyGeneral EngineeringSwitched reluctance motorFinite element methodGenerator (circuit theory)Control theoryLinear congruential generatorSliderElectronic engineeringbusinessEnergy (signal processing)Advanced Materials Research
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Experimental Test and Simulations on a Linear Generator-Based Prototype of a Wave Energy Conversion System Designed with a Reliability-Oriented Appro…

2017

In this paper, we propose a reliability-oriented design of a linear generator-based prototype of a wave energy conversion (WEC), useful for the production of hydrogen in a sheltered water area like Mediterranean Sea. The hydrogen production has been confirmed by a lot of experimental testing and simulations. The system design is aimed to enhance the robustness and reliability and is based on an analysis of the main WEC failures reported in literature. The results of this analysis led to some improvements that are applied to a WEC system prototype for hydrogen production and storage. The proposed WEC system includes the electrical linear generator, the power conversion system, and a sea-wate…

Engineeringwave energy conversion systemStator020209 energylcsh:TJ807-830Geography Planning and Developmentlcsh:Renewable energy sourcesElectric generatorMechanical engineering02 engineering and technologySettore ING-IND/32 - Convertitori Macchine E Azionamenti Elettrici010501 environmental sciencesManagement Monitoring Policy and Law01 natural scienceslaw.inventionlawRobustness (computer science)Linear congruential generatorPower electronics0202 electrical engineering electronic engineering information engineeringEnergy transformationlcsh:Environmental sciences0105 earth and related environmental sciencesHydrogen productionlcsh:GE1-350Settore ING-IND/11 - Fisica Tecnica Ambientalewave energy conversion system; hydrogen; sea-water electrolysisRenewable Energy Sustainability and the Environmentbusiness.industrylcsh:Environmental effects of industries and plantslcsh:TD194-195sea-water electrolysishydrogenSystems designbusinessSustainability
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Evaluation of the power quality from a seawave power farm for different interconnection schemes

2007

In this paper we present an approach to the interconnection of a seawave power farm to the grid The generator type used in the farm is a Permanent Magnet (PM) linear generator driven from the seawaves that generates, therefore, highly distorted emfs. We propose and compare two possible ways to interconnect the farm to the grid. One is based on an approach where for each generator there is a conversion subsystem that permits the direct connection of each generator to the a.c. network, the other one is based on an ac.-d.c. converter that is connected to the generator, the converter is connected to a dc link that can receive the power from every unit and that can supply a dc-ac converter direc…

InterconnectionEngineeringGenerator (computer programming)business.industryElectrical engineeringSettore ING-IND/32 - Convertitori Macchine E Azionamenti ElettriciGridPower (physics)Power quality Power generation DC generators Distributed power generation Stator windings Mesh generation Permanent magnets Stochastic processes Frequency SpringsElectricity generationMesh generationLinear congruential generatorElectronic engineeringbusinessSynchronous motor
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A new solution for the sea wave exploitation. A linear ironless generator

2019

The exploitation of sea wave represents an important frontier for the energy sustainability in the next future. Despite the proposal of several techniques and solutions, commercial devices are not available. In this context, the Department of Engineering is investigating an innovative solution based on linear energy generators. This machine can be adopted as the main component in a wave energy converter, that is the device for the energy extraction of sea wave. Starting from an existing prototype, the paper examines the replacement of the iron stator with a non-magnetic material, in order to solve several common problems of linear generators, such as the cogging force. Results are reported,…

Linear GeneratorEnergy converterStatorComputer science020209 energy020208 electrical & electronic engineeringMechanical engineeringContext (language use)02 engineering and technologySettore ING-IND/32 - Convertitori Macchine E Azionamenti ElettriciPoint Absorberslaw.inventionGenerator (circuit theory)Settore ING-INF/04 - AutomaticalawIronless Electrical MachineComponent (UML)Linear congruential generator0202 electrical engineering electronic engineering information engineeringSea waveEnergy (signal processing)Voltage
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A sliding mass wave energy converter

2019

This paper presents a wave energy converter which is based on a sliding mass coupled to a linear generator. In order to maximize energy extraction, the stochastic features of the energy source has been included in the mathematical model of the system in order to satisfactorily tackle the problem. The results of several simulations are presented.

PhysicsWave energy converterRenewable energyEnergy converter020209 energy05 social sciencesCuba02 engineering and technologySettore ING-IND/32 - Convertitori Macchine E Azionamenti ElettriciSettore ING-INF/04 - AutomaticaControl theoryLinear congruential generator0502 economics and business0202 electrical engineering electronic engineering information engineeringEnergy planSea waveEnergy source050203 business & managementEnergy (signal processing)
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Numerical simulation of a wawe generator: A case of study

2013

The aim of present work is the numerical simulation of a linear generator, capable of directly converting the kinetic energy, available by the wave, into electrical energy, through the device linear motion (up and down). In this paper, we intend to propose a numerical simulation approach to immersed devices by applying the Immersed Boundary Method. The Theory of linear wave is used to study and reproduce sea conditions and the computational domain is created based on observations available for the site in which it is envisaged the positioning of the device.

PhysicsWork (thermodynamics)Computer simulationElectric potential energywave motion numerical simulationMechanicsSettore ING-IND/32 - Convertitori Macchine E Azionamenti ElettriciImmersed boundary methodFinite element methodseaeaveSettore ICAR/01 - IdraulicaGenerator (circuit theory)Linear congruential generatorLinear motionSimulationenergy2013 MTS/IEEE OCEANS - Bergen
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Study on the Effects of Pseudorandom Generation Quality on the Performance of Differential Evolution

2011

Experiences in the field of Monte Carlo methods indicate that the quality of a random number generator is exceedingly significant for obtaining good results. This result has not been demonstrated in the field of evolutionary optimization, and many practitioners of the field assume that the choice of the generator is superfluous and fail to document this aspect of their algorithm. In this paper, we demonstrate empirically that the requirement of high quality generator does not hold in the case of Differential Evolution.

Pseudorandom number generatorRandom number generationLinear congruential generatormedicine.medical_treatmentRandom seedPseudorandomnessmedicinePseudorandom generators for polynomialsPseudorandom generatorPseudorandom generator theoremAlgorithmMathematics
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Considerations on correlations in shift-register pseudorandom number generators and their removal

1997

Abstract We present a simple calculation quantitatively explaining the triplet correlations in the popular shift-register random number generator “R250”, which were recently observed numerically by Schmid and Wilding, and are known from general analysis of this type of generator. Starting from these considerations, we discuss various methods to remove these correlations by combining different shift-register generators. We implement and test a particularly simple and fast version, based on an XOR combination of two independent shift-register generators with different time lags. The results indicate that this generator has much better statistical properties than R250, while being only a facto…

Pseudorandom number generatorRandom number generationmedicine.medical_treatmentPseudorandomnessGeneral Physics and AstronomyPseudorandom generatorPseudorandom generator theoremLagged Fibonacci generatorHardware and ArchitectureLinear congruential generatormedicinePseudorandom generators for polynomialsAlgorithmMathematicsComputer Physics Communications
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Design Considerations of Transverse Flux Generator to Sea Wave Energy

2014

In this paper we study the possibility to use a transverse flux linear generator (TFG) because transverse flux technology presents the highest force density per volume index among the iron based electrical machines. This paper is organized as follows an introduction to describe "state of the art" of WEC's and TFG, in the Section II we find a summary description of the marine condition of the chosen site; in the Section III there is an the analytical procedure for geometric and magnetic design of device (chosen material, length, etc) and in the Section IV the simulation of generator. Further defined the design of the generator, the machine was designed and analyzed through the use of a 3D FE…

SEAwave energyEngineeringGenerator (computer programming)electrical machines.Force densitybusiness.industryMagnetic separationMechanical engineeringSettore ING-IND/32 - Convertitori Macchine E Azionamenti ElettriciFinite element methodSoftwareSection (archaeology)Linear congruential generatorbusinesstransverse fluxEnergy (signal processing)
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