Relevant bibliographies by topics / Linear generator

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  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'Linear generator'

Author: Grafiati
Published: 4 June 2021
Last updated: 10 March 2023

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Journal articles on the topic "Linear generator"

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Imamah, A. Djunaidy, A. Rachmad, and F. Damayanti. "Comparasion of Password Generator between Coupled Linear Congruential Generator (CLCG) and Linear Congruential Generator (LCG)." Journal of Physics: Conference Series 953 (January 2018): 012136. http://dx.doi.org/10.1088/1742-6596/953/1/012136.

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Geri, A., A. Salvini, and G. M. Veca. "MHD linear generator modelling." IEEE Transactions on Appiled Superconductivity 5, no. 2 (June 1995): 465–68. http://dx.doi.org/10.1109/77.402596.

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Menzhinski, A. B., A. N. Malashin, and Yu V. Suhodolov. "DEVELOPING AND THE ANALYSIS OF MATHEMATICAL MODELS OF GENERATORS OF LINEAR AND RECIPROCATING TYPES WITH ELECTROMAGNETIC EXCITATION." ENERGETIKA. Proceedings of CIS higher education institutions and power engineering associations 61, no. 2 (April 5, 2018): 118–28. http://dx.doi.org/10.21122/1029-7448-2018-61-2-118-128.

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The mathematical modeling of generators of linear and reciprocating types with electromagnetic excitation resulted in obtaining the equivalent electrical circuit and diagrams of magnetic circuit of generators as well as the expressions that describe the electromagnetic processes in generators of linear and reciprocating types with electromagnetic excitation is presented in the article. Mathematical models of generators of linear and reciprocating types with electromagnetic excitation take into account the geometrical parameters of the magnetic system of generators, effect of the armature reaction, the unequal distribution of the magnetic field in the magnetic system of the generators and the dependence of the scattering coefficient and the fringe effect (in linear generators) and buckling (in the reciprocating electric generators) on the coordinates of the movement. An evaluation of the effectiveness of the generators of linear and reciprocating types with electromagnetic excitation was performed that demonstrated that the efficiency of the reciprocating generator with electromagnetic excitation is limited to the amount of movement of the moving part of the generator that can be considered as a drawback of this type of generators. Therefore, the reciprocating generator with electromagnetic excitation is more effective to be used in a small value of the working stroke of the movable part of it or in conjunction with a linear generator as a compensator of the end effect in reciprocating motion. In the linear generator the rate of change of inductance and mutual inductance throughout the movement of the moving part is practically constant. So if an increase of the magnitude of the working stroke of the movable part takes place the benefits of the linear generator are undeniable. However, it should be noted that a reduction of the stroke magnitude of the movable part of the linear generator is limited by constructional dimensions of the magnetic system of the generator, which reduces its efficiency at low value of the working stroke of the movable part.
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Seo, Un-Jae, Björn Riemer, Rüdiger Appunn, and Kay Hameyer. "Design considerations of a linear generator for a range extender application." Archives of Electrical Engineering 64, no. 4 (December 1, 2015): 581–92. http://dx.doi.org/10.1515/aee-2015-0043.

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Abstract The free piston linear generator is a new range extender concept for the application in a full electric vehicle. The free piston engine driven linear generators can achieve high efficiency at part and full load which is suitable for the range extender application. This paper presents requirements for designing a linear generator deduced from a basic analysis of a free piston linear generator.
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Han, Tian, Xianglei Xing, Jiawen Wu, and Ying Nian Wu. "Replicating Neuroscience Observations on ML/MF and AM Face Patches by Deep Generative Model." Neural Computation 31, no. 12 (December 2019): 2348–67. http://dx.doi.org/10.1162/neco_a_01236.

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A recent Cell paper (Chang & Tsao, 2017 ) reports an interesting discovery. For the face stimuli generated by a pretrained active appearance model (AAM), the responses of neurons in the areas of the primate brain that are responsible for face recognition exhibit a strong linear relationship with the shape variables and appearance variables of the AAM that generates the face stimuli. In this letter, we show that this behavior can be replicated by a deep generative model, the generator network, that assumes that the observed signals are generated by latent random variables via a top-down convolutional neural network. Specifically, we learn the generator network from the face images generated by a pretrained AAM model using a variational autoencoder, and we show that the inferred latent variables of the learned generator network have a strong linear relationship with the shape and appearance variables of the AAM model that generates the face images. Unlike the AAM model, which has an explicit shape model where the shape variables generate the control points or landmarks, the generator network has no such shape model and shape variables. Yet it can learn the shape knowledge in the sense that some of the latent variables of the learned generator network capture the shape variations in the face images generated by AAM.
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Cho, Il Hyoung, and Jang Young Choi. "Design of Wave Energy Extractor with a Linear Electric Generator -Part II. Linear Generator." Journal of the Korean Society for Marine Environment & Energy 17, no. 3 (August 25, 2014): 174–81. http://dx.doi.org/10.7846/jkosmee.2014.17.3.174.

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Abdalla, Izzeldin, Ezrann Z. Zainal A., Nur Amalina Ramlan, Firmansyah, Abd Rashid A. Aziz, and Morgan Heikal. "Free piston linear generator for low grid power generation." MATEC Web of Conferences 131 (2017): 02007. http://dx.doi.org/10.1051/matecconf/201713102007.

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Feng, Haichao, Jinsong Wei, Jikai Si, Zhiping Cheng, Chun Gan, and Xiaozhuo Xu. "Comparison of the Electromagnetic Characteristics of a Novel Gramme Winding and a Concentrated Winding Tubular Permanent-Magnet Linear Generator." Energies 13, no. 22 (November 13, 2020): 5943. http://dx.doi.org/10.3390/en13225943.

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A tubular permanent-magnet linear generator is suitable for direct drive wave energy conversion owing to its simple structure, easy maintenance and high efficiency. In this study, a novel Gramme winding tubular permanent-magnet linear generator (GW) is designed to increase power density. First, the structure of the Gramme winding and concentrated winding tubular permanent-magnet linear generator is introduced and the operation principle of the generator is analysed. Second, the initial parameters of GW are determined based on the similar overall dimensions to those of the concentrated winding tubular permanent-magnet linear generator. Third, the air gap flux density, external characteristics, voltage regulation, output power, and loss of the two generators are compared. Finally, the DC load capacities of the two generators are compared based on a three-phase full-control bridge rectifying circuit. The results show that the GW has a higher power density than the latter.
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Fazal, Imran, K. S. Rama Rao, and Mohd Noh Karsiti. "Modeling and Simulation of a Moving-Coil Linear Generator." Applied Mechanics and Materials 110-116 (October 2011): 2458–63. http://dx.doi.org/10.4028/www.scientific.net/amm.110-116.2458.

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This paper presents the analysis on flux and electromotive force (EMF) developed by moving coil and moving iron linear generators using finite element method (FEM). A 6 pole moving coil and 6/4 moving iron linear generator are used to analyze and compare the flux distribution in the air gap. These generators will be used for free piston linear engine. A moving permanent-magnet linear generator has drawbacks of thermal and impact force demagnetization, in addition to requiring complex control strategies. To overcome these limitations, one of the solutions is to place magnets on the stator instead on the translator. Based on the analysis it is proposed to replace the moving permanent-magnet by a moving-coil for a linear generator whose prime mover is a free-piston linear combustion engine.
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Ahamed, Raju, Kristoffer McKee, and Ian Howard. "A Review of the Linear Generator Type of Wave Energy Converters’ Power Take-Off Systems." Sustainability 14, no. 16 (August 11, 2022): 9936. http://dx.doi.org/10.3390/su14169936.

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The traditional wave energy converters (WECs) use hydraulic or turbine-type power take-off (PTO) mechanisms which consist of many moving parts, creating mechanical complexity and increasing the installation and maintenance costs. Linear generator-based direct-drive WECs could be a solution to overcome this problem, but the efficiency of the single conventional linear generator is not high enough, and it cannot work satisfactorily in the low-frequency range. This article reviews the recent research developments of the linear permanent magnet (PM) generator-based WEC to harness maximum energy from ocean waves. It starts with a brief introduction and background of wave energy converters using linear generators. Following this, the working principle of the WECs with linear PM generators is briefly outlined. Subsequently, the analytical model of the linear PM generator-based WEC is studied. After that, the up-to-date developments of the linear PM generator-based PTO systems are studied. Despite some modifications resulting in complexity in the linear PM generator’s structure and a rise in manufacturing costs, the study shows the systems’ efficiencies increased by increasing magnetic flux and reducing cogging force. The key parameters and improvement issues that can increase the performances and efficiencies of the PTO systems are identified to help future researchers for further development. Moreover, the review discusses the numerical and experimental analysis tools, the typical control systems used by the researchers and the challenges of the linear generator-based wave energy conversion system. Finally, conclusions about the significant beneficial characteristics and design choice of the WEC linear generator structure are provided and related to the application conditions.
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Dissertations / Theses on the topic "Linear generator"

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Giske, Gustav, and Mikael Hug. "Linear Ferrite Generator Prototype for Wave Power." Thesis, KTH, Hållbar utveckling, miljövetenskap och teknik, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-228744.

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A linear, direct drive, scale model prototype generator has been designed at KTH Royal Institute of technology in Sweden. The prototype is based on a scaled down electromagnetic optimization made by researcher Anders Hagnestål. The aim of the project is to verify the calculations experimentally and by using ferrite magnets, there is an opportunity to develop a competitively priced and environmentally friendly generator for wave power plants. Based on the electromagnetic optimization a mechanical design has been developed using computer aided design (CAD). Structural calculations have been made to ensure that the design withstands the large magnetic forces involved. Furthermore, different techniques and challenges appearing in the build of the prototype have been evaluated and explained. A description of the advantages of the design and the basic electromagnetic design is also included. The build is underway and is expected to be finished during 2018.
En linjär direktdriven generatorprototyp har designats på KTH, Kungliga Tekniska högskolan i Sverige. Prototypen är baserad på en nerskalad elektromagnetisk optimering gjord av Anders Hagnestål. Målet med projektet är att verifiera beräkningar experimentellt och genom att använda ferritmagneter finns det en möjlighet att utveckla en konkurrenskraftig och miljövänligare generator för vågkraftverk. Baserat på den elektromagnetiska optimeringen har en mekanisk design tagits fram med hjälp av datorstödd design (CAD). Hållfasthetsberäkningar har gjorts för att säkerställa att designen klarar av de stora magnetiska krafter den utsätts för. Vidare har även olika tekniker och utmaningar som uppstått i byggnationen utvärderats och beskrivits. En beskrivning av designens fördelar och den grundläggande elektromagnetiska designen har även inkluderats. Byggnationen pågår och beräknas vara färdig under 2018.
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Hug, Mikael, and Gustav Giske. "Linear Ferrite Generator Prototype for Wave Power." Thesis, KTH, Skolan för elektroteknik och datavetenskap (EECS), 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-239384.

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A linear, direct drive, scale model prototype generator has been designed at KTH Royal Institute of technology in Sweden. The prototype is based on a scaled down electromagnetic optimization made by researcher Anders Hagnestål. The aim of the project is to verify the calculations experimentally and by using ferrite magnets, there is an opportunity to develop a competitively priced and environmentally friendly generator for wave power plants. Based on the electromagnetic optimization a mechanical design has been developed using computer aided design (CAD). Structural calculations have been made to ensure that the design withstands the large magnetic forces involved. Furthermore, different techniques and challenges appearing in the build of the prototype have been evaluated and explained. A description of the advantages of the design and the basic electromagnetic design is also included. The build is underway and is expected to be finished during 2018.
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Danielsson, Oskar. "Wave Energy Conversion : Linear Synchronous Permanent Magnet Generator." Doctoral thesis, Uppsala : Acta Universitatis Upsaliensis, 2006. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-7194.

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Simone, Dominic J. "Modeling a linear generator for energy harvesting applications." Thesis, Monterey, California: Naval Postgraduate School, 2014. http://hdl.handle.net/10945/44669.

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Approved for public release; distribution is unlimited
The intent of this research is to draw attention to linear generators and their potential uses. A flexible model of a linear generator created in MATLAB Simulink is presented. The model is a three-phase, 12-pole, non-salient, synchronous permanent magnet linear generator with a non-sinusoidal back electromotive force (EMF) but could easily be adapted to fit any number of poles or any back EMF waveform. The emerging technologies related to linear generators such as wave energy converters and free-piston engines are explained. A selection of these technologies is generically modeled and their results are discussed and contrasted against one another. The model clearly demonstrates the challenges of using linear generators in different scenarios. It also proves itself a useful tool in analyzing and improving the performance of linear generators under a variety of circumstances.
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DEL, GUSTO LUIGI CARMINE. "Linear Rational Insurance Model & Economic Scenario Generator." Doctoral thesis, Università degli Studi di Milano-Bicocca, 2020. http://hdl.handle.net/10281/285067.

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Linear Rational Insurance Model Abstract The aim of the first work is to provide a closed pricing formula for insurance contracts in a linear rational framework, which consists in assuming the existence of a linear drift diffusion process and a state price density which is a linear function of it. The main advantage of this process is that we can compute the conditional expectation of polyno- mials function of this diffusion: in fact a polynomial can be see as a linear combination of an enlarged set of variables with a linear drift, this can be proofed by means of the Itô’s formula. This result is very important because it allows us, under the hypothesis that the diffusion part is a martingale, to use all the results we have about linear drift diffusions for this new set of variables. As a consequence, we are able to give the price of three important life insurance contracts: the sur- vival and death benefit and the guaranteed annuity option (also called GAO). It is about the GAO that we can see the advantage of the framework we are using: actually the payoff of the GAO is not an affine or a polynomial function, so the only way to treat it is by performing a change of measure or a Monte Carlo simulation. We show that, under the assumption that the state space is compact, we are able to approximate the GAO payoff by a polynomial, which will allow us to find a closed formula for the price of this contract. The end of this work is dedicated to some numerical experiments which have the aim to point out the importance of the choice of the degree of the approximated polynomials in order to have reliable results. We show that a ten degree polynomial is able to estimate with a small error the Monte Carlo price of the GAO. This work extend the existing literature concerning polynomial models and their application in life insurance, proposing a pricing method also for liabilities which are not necessarily building blocks, but more complicated functions, like the guaranteed annuity option. Economic Scenario Generator The aim of this second work is to build an economic scenario generator with the intention of improving the portfolio allocation of Bpifrance. In order to do that, we have to pass through a different number of steps. The first thing is to study, by a principal component analysis, the present portfolio of Bpifrance, in order to find the variables which explains the most of its variability. A second step consists in selecting from the market the financial instruments that allows us to replicate the components we retained from the step before. This part is then completed by both an univariate and multivariate analysis of these assets, finding in this way the stylized facts that we need to take into account when choosing a model for the diffusion of the price of these financial factors. The third step, and last concerning our work, is to estimate the parameters of the models we retained and see if they are able to fit the empirical data and, as a consequence, if they could be used as a part of our future economic scenario generator. In order to achieve this point, we focus only on the diffusion of the equity indices, proposing also a model who takes into account the dependency on the inflation. We will see that on the basis of our data there is no evidence to link the return on equity indices on the realisations of this macroeconomic factor.
Linear Rational Insurance Model Abstract The aim of the first work is to provide a closed pricing formula for insurance contracts in a linear rational framework, which consists in assuming the existence of a linear drift diffusion process and a state price density which is a linear function of it. The main advantage of this process is that we can compute the conditional expectation of polyno- mials function of this diffusion: in fact a polynomial can be see as a linear combination of an enlarged set of variables with a linear drift, this can be proofed by means of the Itô’s formula. This result is very important because it allows us, under the hypothesis that the diffusion part is a martingale, to use all the results we have about linear drift diffusions for this new set of variables. As a consequence, we are able to give the price of three important life insurance contracts: the sur- vival and death benefit and the guaranteed annuity option (also called GAO). It is about the GAO that we can see the advantage of the framework we are using: actually the payoff of the GAO is not an affine or a polynomial function, so the only way to treat it is by performing a change of measure or a Monte Carlo simulation. We show that, under the assumption that the state space is compact, we are able to approximate the GAO payoff by a polynomial, which will allow us to find a closed formula for the price of this contract. The end of this work is dedicated to some numerical experiments which have the aim to point out the importance of the choice of the degree of the approximated polynomials in order to have reliable results. We show that a ten degree polynomial is able to estimate with a small error the Monte Carlo price of the GAO. This work extend the existing literature concerning polynomial models and their application in life insurance, proposing a pricing method also for liabilities which are not necessarily building blocks, but more complicated functions, like the guaranteed annuity option. Economic Scenario Generator The aim of this second work is to build an economic scenario generator with the intention of improving the portfolio allocation of Bpifrance. In order to do that, we have to pass through a different number of steps. The first thing is to study, by a principal component analysis, the present portfolio of Bpifrance, in order to find the variables which explains the most of its variability. A second step consists in selecting from the market the financial instruments that allows us to replicate the components we retained from the step before. This part is then completed by both an univariate and multivariate analysis of these assets, finding in this way the stylized facts that we need to take into account when choosing a model for the diffusion of the price of these financial factors. The third step, and last concerning our work, is to estimate the parameters of the models we retained and see if they are able to fit the empirical data and, as a consequence, if they could be used as a part of our future economic scenario generator. In order to achieve this point, we focus only on the diffusion of the equity indices, proposing also a model who takes into account the dependency on the inflation. We will see that on the basis of our data there is no evidence to link the return on equity indices on the realisations of this macroeconomic factor.
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Hamood, Ahmed Mohammed. "Two-stage thermoacoustic electricity generator with push-pull linear alternator." Thesis, University of Leeds, 2016. http://etheses.whiterose.ac.uk/15681/.

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This study focuses on the design, construction and experimental evaluation of a thermoacoustic electricity generator prototype with a push-pull linear alternator. The push-pull coupling offers a solution to run the looped-tube thermoacoustic engine at high acoustic impedance using one alternator. The novel configuration of the engine consists of two identical half-wavelength stages with an alternator connected between them. A simulation was carried out using the DeltaEC programme. The modelling started by investigating the required acoustic field for the alternator. The engine modelling has been done as half of the engine which is one-stage, because the DeltaEC shooting method showed that it was unable to run two identical stages. The engine is 16.02 m long and run at 55.1 Hz. The simulation showed that it is possible to produce more than 133 W of electricity at a thermal-to-electric efficiency of 23% while using helium pressurized at 28 bar. In practice, the engine failed to self-start. After exciting it to run by an external pulse, an electric power of 48.6 W was generated with a thermal-to-electric efficiency of 2.7%. The high heat leak detected was reduced by installing an insulating gasket between the ambient heat exchanger and regenerator holder, which encouraged the electricity generation to increase. The engine became self-starting when the regenerator thickness was reduced from 73 mm to 71.8 mm. The maximum generated electric power was 73.3 W at 3.33% thermal-to-electric efficiency at a heating power of 2200 W, and a maximum efficiency of 3.6% was achieved at 71.9 W electric power at a heating power of 2000 W. The success of the two-stage engine with a push-pull linear alternator encouraged modelling and design of a four-stage engine with two push-pull linear alternators able to generate up to 269 W of electricity, theoretically.
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Barajas, Solano José Ignacio. "Novel active magnetic bearings for direct drive C-Gen linear generator." Thesis, University of Edinburgh, 2017. http://hdl.handle.net/1842/28900.

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This document presents a novel active magnetic levitation system. In the pursued of this endeavour different topics related with wave energy were explore. Climate change and energy security are the main motivation to pursued new options for non-fossil fuels energy generation. An overview of renewable energy and specifically of wave energy was presented. The potential for wave energy in The United Kingdom turn out to be 75 TWh/year from wave energy, 3 times more of what wind energy has produced in 2013. This means a massive impact on the energy market and emission reduction. In order to achieve this, improvements on wave energy devices have to be done. An overview of wave energy converters was covered selecting the C-Gen as the generator topology this document will base its studies. Linear generator bearings are desired to have long lifespan with long maintenance intervals. The objective is to come with an active magnetic levitation design that can replace traditional bearings augmenting the reliability of the system. Therefore magnetic bearings option have been reviewed and simulation experimentations has resulted in a novel active magnetic levitation system using an air-cored coils Halbach array acting over a levitation track. The configuration would generate bi directional repulsion forces with respect of the levitating body. Different software were used to analyse the magnetic field and forces generation. Additionally a prototype was built and tested to corroborate the results. As part of the modelling a mathematical model was explored and robust control implementation was also realised. Finally a scalability study of the device as well as a reliability analysis was done. Although the reliability studies shows an increase of ten times of the mean time to failure, the concept is not able to endure the loads acting on the generator unless the magnetic bearings became bigger than the generator and therefore economically unfeasible.
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Karlsson, Joakim, and Ola Söderström. "Review of Magnetic Materials Along With a Study of the Magnetic Stability and Solidity of Y40." Thesis, Uppsala universitet, Elektricitetslära, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-176021.

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Wave energy converters (WECs) are relatively new power sources under rapiddevelopment. WECs utilize permanent magnets to generate power and theperformance of these magnets have a great impact on the produced effects in theWECs. This paper is primarily constructed to investigate the magnetic and mechanicalproperties of a specific kind of permanent magnets, referred to as Y40. The paperalso gives a comprehensive review of magnetic materials in general, slightly focusingon magnetic stability. Literature studies has been made to get an understanding ofhow the Y40 magnets will perform under external influences such as reversed field,temperature change and mechanical stress. Further, a compression test has beenmade to examine the Y40s solidity. From the results of the tests and from theinformation provided in literature it is considered to be little to no risk for the Y40sto lose magnetization due to external influences. However, because of theirassembled structure, the Y40 magnets are very likely to break in their joints duringpressure lower than what is expected in the WECs.
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Oladeinde, Abiola Omobolaji. "Linear demultiple solution based on bottom-multiple generator (BMG) approximation: subsalt example." Texas A&M University, 2005. http://hdl.handle.net/1969.1/4407.

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Significant quantities of hydrocarbons are found in complex salt environments. One of the modern challenges of exploration and production activities is to image below salt. This challenge arises from the complexities of salt structures, weak primaries from the subsalt, and the interference of free-surface multiples with the weak primaries of the subsalt. To effectively process subsalt data, we need to develop a method of attenuating free-surface multiples that preserves the amplitude and phase of primaries and does not introduce artifacts at either near and far offsets. In this thesis, we will demonstrate that the weak primaries of the subsalt can be preserved while attenuating free-surface multiples. The method used for the demonstration is the bottom-multiple generator (BMG) reflector approximation. This technique requires that a portion of the data containing only primaries be defined. A multidimensional convolution of the data containing only primaries with the actual data will predict free-surface multiples and hence is used to attenuate free-surface multiples from the actual data. This method is one of the most effective methods for attenuating free-surface multiples; however, the method requires muting data at the BMG location. One of the issues investigated in this thesis, is to establish the sensitivity of the BMG demultiple technique when the mute at the BMG location end up cutting some seismic reflections, which can be the case in complex environments such as the Gulf of Mexico and Gulf of Guinea, where freesurface multiples interfere with primaries. For this investigation, we generated synthetic data through the 2D elastic finite-difference modeling technique. The synthetic seismic data contain primaries; free-surface multiples, and internal multiples, and direct waves acquired over a 2D geological model that depicts a shallow-water geology. In this thesis, we also investigate if the first step of the BMG demultiple technique can sufficiently attenuate free-surface multiples. For this investigation, we designed a 2D geological model, which depicts the deep offshore environment, and we generated synthetic data through the 2D elastic finite-difference modeling technique. After performing the various investigations mentioned above, the following conclusions were made, that the demultiple result is not affected when the mute at the BMG location end up cutting some primaries, that the first step of the BMG demultiple technique is not sufficient for the demultiple, and that the weak subsalt primaries are preserved during demultiple processes. We compared shot gathers and zero offset data before and after the demultiple.
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Amine, Ramdani Ahmed, and Sebastian Rudnik. "Design and Construction of High Current Winding for a Transverse Flux Linear Generator Intended for Wave Power Generation." Thesis, KTH, Skolan för elektroteknik och datavetenskap (EECS), 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-240366.

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There is currently a high demand for electric power from renewablesources. One source that remains relatively untapped is the motionof ocean waves. Anders Hagnestål has been developing a uniquelyefficient and simplified design for a point-absorb buoy generator byconverting its linear motion directly into alternating electric power usinga linear PM engine. To test this method, a smaller prototype isbuilt. Its characteristics present some unusual challenges in the designand construction of its winding.Devices of this type typically use relatively low voltage (690V typicallyfor a wind turbine, compared to the 10kV range of traditionalpower plants). To achieve high power, they need high current, whichin turn requires splitting the conductors in the winding into isolatedparallel strands to avoid losses due to eddy currents and current crowding.However, new losses from circulating currents can then arise. Inorder to reduce said losses, the parallel conductors should be transposedin such a way that the aggregate electromotive force the circuitsthat each pair of them forms is minimized.This research and prototyping was performed in absence of advancedindustrial means of construction, with limited space, budget,materials, manpower, know-how, and technology. Manual ingenuityand empirical experimentation were required to find a practical implementationfor: laying the cables, fixing them in place, transferringthem to the machine, stripping their coating at the ends and establishinga reliable connection to the current source.Using theoretical derivations and FEM simulation, a sufficientlygood transposition scheme is proposed for the specific machine thatthe winding is built for. A bobbin replicating the shape of the enginecore is built to lay down the strands.The parallel strands are then organized each into their respectivebobbin, with a bobbin rack and conductor funneling device being designedand constructed to gather them together into a strictly-organizedbundle. An adhesive is found to set the cables in place.Problems with maintaining the orientation and configuration of thecables in the face of repeated torsion are met and solved. A chemicalsolution is used to strip the ends of the conductors, and a reliableconnection is established by crimping the conductors into a bi-metalCu-Al lug.ivIn conclusion, the ideal transposition schemes required to cancelout circulating currents due to magnetic flux leakage are impossibleto put in practice without appropriate technological means. The feasibletransposition scheme turns out to be a simple mirroring of conductors’positions, implemented by building each half of the windingseparately around replicas of the core and then connecting them usingcrimping lugs.
Efterfrågan på el från förnybara källor är hög och inget tyder på att det kommer ändras den närmsta tiden. En källa till förnybar el som än idag står relativt orörd är den där man använder energin från havsvå- gor. Det är denna förnybara källa Anders Hagnestål haft i åtanke när han nu bygger en unikt effektiv generator med syftet att i ett senare skede utvinna el med hjälp av flytande punktabsorberande vågkraft- system. Generatorn är av den linjära typen och omvandlar det punk- tabsorberande systemet rörelse till el. För att testa denna generator- modell så påbörjades bygget av två fullskaliga prototyper 2017. Denna uppsats behandlar specifikt arbetet med generatorlindningen till pro- totyperna och innefattar processen från design till själva byggnatio- nen. Lindingen består av flertalet mindre och isolerade lindningsleda- re med uppgift att bland annat minska skinneffekt och virvelströms- förluster. När man använder denna metod så uppkommer dock ett nytt problem vilket härstammar från att lindningsledarna är samman- kopplade i vardera ända och bildar på så sätt n slutna strömkretsar. Konsekvensen kan vara stora förluster från cirkulerande strömmar på grund av det magnetiska ströflöde som finns runt järnkärnan som lindningen omsluter. Utgångspunkten för att minimera dessa cirkule- rande strömmar är att transponera alla lindningsledare på ett sätt så att den resulterande elektromotoriska spänningen för varje strömkrets blir så liten som möjligt. Med hjälp av förenklade modeller samt FEM simuleringar så bestämdes ett lämpligt sätt att transponera lindningstrådarna utifrån oli- ka kriterier. Lösningen blev att lindningstrådarna endast transponera- des en gång med en så kallad 180 grader transponering. Detta ger en tillräckligt god minimering av de cirkulerande ström- marna, men den stora fördelen med denna lösning är att det är möjligt att linda maskinen med de små resurser projektet hade tillgång till, dock var detta till en stor nackdel då väldigt mycket tid gick till att hitta egna tillvägagångsätt för att utföra byggandet av lindningen på ibland okonventionella sätt.
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Books on the topic "Linear generator"

1

Tanzawa, Toru. On-chip High-Voltage Generator Design. New York, NY: Springer New York, 2013.

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Lefkoff, Lawrence J. AQMAN: Linear and quadratic programming matrix generator using two-dimensional ground-water flow simulation for aquifer management modeling. Menlo Park, Calif: Dept. of the Interior, U.S. Geological Survey, 1987.

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United States. National Aeronautics and Space Administration., ed. The binary weight distribution of the extended (2[superscript m], 2[superscript m]-4) code of Reed-Solomon code over GF(2[superscript m]) with generator polynomial (x-[alpha])(x-[alpha]²)(x-[alpha]³): Technical report to NASA Goddard Space Flight Center. [Washington, D.C: National Aeronautics and Space Administration, 1987.

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Boldea, I., and Syed A. Nasar. Linear Electric Actuators and Generators. Cambridge: Cambridge University Press, 1997.

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A, Nasar S., ed. Linear electric actuators and generators. Cambridge: Cambridge University Press, 1997.

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Percus, O. E. Long range correlations in linear congruential generators. New York: Courant Institute of Mathematical Sciences, New York University, 1987.

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Dolićanin, Ćemal B., and Anatolij B. Antonevich. Dynamical Systems Generated by Linear Maps. Cham: Springer International Publishing, 2014. http://dx.doi.org/10.1007/978-3-319-08228-8.

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United States. National Aeronautics and Space Administration., ed. Lightweight linear alternators with and without capacitive tuning. [Washington, DC]: National Aeronautics and Space Administration, 1993.

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United States. National Aeronautics and Space Administration., ed. Lightweight linear alternators with and without capacitive tuning. [Washington, DC]: National Aeronautics and Space Administration, 1993.

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Casteren, J. A. van. Generators of stronglycontinuous semigroups. Boston, Mass: Pitman Advanced, 1985.

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Book chapters on the topic "Linear generator"

1

Fontaine, Caroline. "Linear Congruential Generator." In Encyclopedia of Cryptography and Security, 721. Boston, MA: Springer US, 2011. http://dx.doi.org/10.1007/978-1-4419-5906-5_354.

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Purkar, Aditya, P. R. Dhamangaonkar, and K. Muralidharan. "Design of Free-Piston Linear Generator." In Lecture Notes in Mechanical Engineering, 681–96. Singapore: Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-5996-9_54.

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Cancellieri, Giovanni. "Generator Matrix Approach to Linear Block Codes." In Polynomial Theory of Error Correcting Codes, 3–99. Cham: Springer International Publishing, 2014. http://dx.doi.org/10.1007/978-3-319-01727-3_1.

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Konsam, Gegerin, and Merin Loukrakpam. "Triple Linear Congruential Generator-Based Hardware-Efficient Pseudorandom Bit Generation." In Lecture Notes in Electrical Engineering, 237–45. Singapore: Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-16-3767-4_22.

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Golić, Jovan Dj. "Linear Statistical Weakness of Alleged RC4 Keystream Generator." In Advances in Cryptology — EUROCRYPT ’97, 226–38. Berlin, Heidelberg: Springer Berlin Heidelberg, 1997. http://dx.doi.org/10.1007/3-540-69053-0_16.

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Braun, E. M., E. Baydar, and F. K. Lu. "Modeling of a Detonation Driven, Linear Electric Generator Facility." In 28th International Symposium on Shock Waves, 541–46. Berlin, Heidelberg: Springer Berlin Heidelberg, 2012. http://dx.doi.org/10.1007/978-3-642-25688-2_83.

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Aziz, A. Rashid A., M. B. Baharom, Ezrann Zharif Zainal Abidin, Firmansyah, Salah E. Mohammed, W. N. Azleen W. Nadhari, Evelyn, and M. Noraiman M. Jaffry. "Principal, Design and Characteristics of a Free Piston Linear Generator." In Energy Efficiency in Mobility Systems, 127–44. Singapore: Springer Singapore, 2019. http://dx.doi.org/10.1007/978-981-15-0102-9_7.

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Phung, Van Ngoc, The Mich Nguyen, The Ba Dang, and Dinh Tuan Phan. "Numerical Simulation of a Wave Energy Converter Using Linear Generator." In Lecture Notes in Civil Engineering, 319–26. Singapore: Springer Singapore, 2018. http://dx.doi.org/10.1007/978-981-13-2306-5_44.

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Heera, Cherukumpalem, and Vadthyavath Shankar. "Design of Modified Dual-Coupled Linear Congruential Generator Method Architecture for Pseudorandom Bit Generation." In Advances in Intelligent Systems and Computing, 633–42. Singapore: Springer Singapore, 2022. http://dx.doi.org/10.1007/978-981-16-7088-6_57.

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Voronenko, Yevgen, Franz Franchetti, Frédéric de Mesmay, and Markus Püschel. "System Demonstration of Spiral: Generator for High-Performance Linear Transform Libraries." In Algebraic Methodology and Software Technology, 407–12. Berlin, Heidelberg: Springer Berlin Heidelberg, 2008. http://dx.doi.org/10.1007/978-3-540-79980-1_30.

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Conference papers on the topic "Linear generator"

1

Zulkifli, Shamsul Aizam, Erwan Sulaiman, Wahyu Mulyo Utomo, Afarulrazi Abu Bakar, Mahyuzie Jenal, and Md Zarafi Ahmad. "Control of power generated from linear generator." In 2013 IEEE Conference on Clean Energy and Technology (CEAT). IEEE, 2013. http://dx.doi.org/10.1109/ceat.2013.6775681.

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Shuai, Chen. "Fast linear congruence generator." In Education (ICCSE 2010). IEEE, 2010. http://dx.doi.org/10.1109/iccse.2010.5593821.

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Choi, Jun-Hyuk, Joon Sung Park, Gyung-Sun Ham, and Jong-Su Choi. "Simulation of Wave Generation System with Linear Generator." In International Conference on Industrial Application Engineering 2015. The Institute of Industrial Applications Engineers, 2015. http://dx.doi.org/10.12792/iciae2015.093.

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Yamanaka, Y., M. Nirei, M. Sato, H. Murata, B. Yinggang, and T. Mizuno. "Design of linear synchronous generator suitable for free-piston engine linear generator system." In 2017 11th International Symposium on Linear Drives for Industry Applications (LDIA). IEEE, 2017. http://dx.doi.org/10.23919/ldia.2017.8097243.

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Sathya K., Premalatha J., Vani Rajasekar, Madhan Kumar M., Deepak M., and Manoj S. R. "Modified linear congruential generator to secure random number generation." In PROCEEDINGS OF THE 4TH NATIONAL CONFERENCE ON CURRENT AND EMERGING PROCESS TECHNOLOGIES E-CONCEPT-2021. AIP Publishing, 2021. http://dx.doi.org/10.1063/5.0068654.

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Han, Tian, Jiawen Wu, and Ying Nian Wu. "Replicating Active Appearance Model by Generator Network." In Twenty-Seventh International Joint Conference on Artificial Intelligence {IJCAI-18}. California: International Joint Conferences on Artificial Intelligence Organization, 2018. http://dx.doi.org/10.24963/ijcai.2018/305.

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A recent Cell paper [Chang and Tsao, 2017] reports an interesting discovery. For the face stimuli generated by a pre-trained active appearance model (AAM), the responses of neurons in the areas of the primate brain that are responsible for face recognition exhibit strong linear relationship with the shape variables and appearance variables of the AAM that generates the face stimuli. In this paper, we show that this behavior can be replicated by a deep generative model called the generator network, which assumes that the observed signals are generated by latent random variables via a top-down convolutional neural network. Specifically, we learn the generator network from the face images generated by a pre-trained AAM model using variational auto-encoder, and we show that the inferred latent variables of the learned generator network have strong linear relationship with the shape and appearance variables of the AAM model that generates the face images. Unlike the AAM model that has an explicit shape model where the shape variables generate the control points or landmarks, the generator network has no such shape model and shape variables. Yet the generator network can learn the shape knowledge in the sense that some of the latent variables of the learned generator network capture the shape variations in the face images generated by AAM.
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Ohl, Thorsten. "O’Mega & WHIZARD: Monte Carlo event generator generation for future colliders." In Physics and experiments with future linear e+ e- colliders. AIP, 2001. http://dx.doi.org/10.1063/1.1394396.

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Dighe, Umang, and Frank K. Lu. "Modeling of a Linear Power Generator Driven by a Pulse Detonation Engine." In ASME 2018 Dynamic Systems and Control Conference. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/dscc2018-9055.

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A power generation technique utilizing a pulse detonation engine to drive a piston connected to a linear power generator is described. Coupled magnetic–electric–mechanical models for the mass–spring–damper system are developed. The system is characterized by nonlinear damping due to the rare earth permanent magnets used in the architecture of the generator and a piecewise continuous external forcing function from the pulsed detonation. An analytical model is built to simulate the system, calculate the electromagnetic forces and estimate the power output. The analytical model used in this concept is suitable for flat type linear generators.
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Zulkifli, S. A., and M. Z. Ahmad. "Linear generator models in simulink block." In 2010 IEEE International Conference on Power and Energy (PECon). IEEE, 2010. http://dx.doi.org/10.1109/pecon.2010.5697599.

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Molla, Selim. "Review of the Linear Electrical Generator for Electricity Generation from the Oceanic Wave." In International Conference on Emerging Trends in Engineering and Advanced Science. AIJR Publisher, 2022. http://dx.doi.org/10.21467/proceedings.123.3.

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The fossil fuel based generation of electricity is very harmful for the environment due to emission of greenhouse gas. In order to avoid the problem, the tendency of renewable energy utilization is urgently required to increase. At present, there are different types of renewable energy such as solar, wind, biomass, geothermal etc. popularly applied to generate electricity. Besides, oceanic wave energy becomes much popular day by day due to having some special features. For harvesting energy, linear electrical generator is widely applied for wave energy conversion. In this paper, electricity generation system in Bangladesh is presented. Further, a comparison among solar, wind, and oceanic wave energy is presented. It is shown that oceanic wave energy has many advantages than solar and wind energy. For this reason, the generation of electricity from this source is highlighted. In addition, the oceanic wave energy conversion system is also explained. Further, the basic structure and working principle of linear generator, list of wave energy projects, and development progress of linear generator have been presented.
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Reports on the topic "Linear generator"

1

Kocher, David G. Digital Wideband Linear-FM Chirp Waveform Generator. Fort Belvoir, VA: Defense Technical Information Center, December 2010. http://dx.doi.org/10.21236/ada534669.

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Peskin, Michael E. Pandora: an Object-Oriented Event Generator for Linear Collider Physics. Office of Scientific and Technical Information (OSTI), October 1999. http://dx.doi.org/10.2172/15090.

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McCall, Alan. System Agnostic Switched Reluctance Linear Generator for WECs (Final Report). Office of Scientific and Technical Information (OSTI), September 2021. http://dx.doi.org/10.2172/1906395.

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Bondar, Roman. Experimental investigations of linear oscilla-tory machines characteristics in generator operating mode. Gіrnichі, budіvelnі, dorozhnі ta melіorativnі mashini, April 2019. http://dx.doi.org/10.31493/gbdmm1892.0501.

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Peskin, Michael E. Event Generators for Linear Collider Physics. Office of Scientific and Technical Information (OSTI), October 1999. http://dx.doi.org/10.2172/15089.

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Ross, Marc. Review of Diagnostics for Next Generation Linear Accelerators. Office of Scientific and Technical Information (OSTI), May 2001. http://dx.doi.org/10.2172/784919.

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Schanze, Kirk S. Second Generation Organometallic Materials for Non-Linear Optical Application. Fort Belvoir, VA: Defense Technical Information Center, May 2009. http://dx.doi.org/10.21236/ada500039.

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Mazzaro, Gregory J., and Kelly D. Sherbondy. Combined Linear and Nonlinear Radar: Waveform Generation and Capture. Fort Belvoir, VA: Defense Technical Information Center, April 2013. http://dx.doi.org/10.21236/ada576177.

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9

Hooker, M. W. Pulse Capacitors for Next Generation Linear Colliders. Final Report. Office of Scientific and Technical Information (OSTI), March 2000. http://dx.doi.org/10.2172/761355.

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Duffey, J. Gas Generation Testing of Neptunium Oxide Generated Using the HB-Line Phase IIFlowsheet. Office of Scientific and Technical Information (OSTI), August 2003. http://dx.doi.org/10.2172/890150.

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