Relevant bibliographies by topics / LLC topology

Contents

  1. Journal articles
  2. Dissertations / Theses
  3. Book chapters
  4. Conference papers

Academic literature on the topic 'LLC topology'

Author: Grafiati
Published: 4 June 2021
Last updated: 15 February 2022

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Journal articles on the topic "LLC topology"

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He, Jun Ping, Jin Lu Wang, and Guo Zhuang Bai. "Design and Analysis of a Novel Interleaving LLC SMPS with Load Current Sharing Performance." Advanced Materials Research 677 (March 2013): 346–53. http://dx.doi.org/10.4028/www.scientific.net/amr.677.346.

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LLC series resonant topology has been widely adopted in many kinds of power converters for its high frequency, high efficiency and high power density advantages. However, the ordinary topology of a single-phase LLC is not fit to be used in low-voltage high-current output field for its relative larger output voltage ripple. In order to provide a low voltage and high current output using a LLC topology, a novel interleaving LLC switched-mode power supply design was proposed to reduce output voltage ripples ripple in this paper. This design used two hardware measures to automatically ensure a good load current sharing effect between two-branch LLC circuits and avoid the PFM difficulties of the active current sharing methods. The principles and design procedures of this novel LLC converter were introduced in detail and verified by Saber simulation results. A 1.5kW DC/DC prototype was built up in the end and the experiment results showed that a good current sharing performance was achieved.
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Cui, Jia Min, Xian Feng Yu, and Wei Jie Xu. "Design on LED Driver Based on LLC Resonant Topology." Applied Mechanics and Materials 303-306 (February 2013): 1702–5. http://dx.doi.org/10.4028/www.scientific.net/amm.303-306.1702.

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As for the DC/DC part in high-effiency LED driver with constant current output, this paper presents the circuit based on LLC resonant topology. The principle of the LLC resonant converter, design process, and the influence of different key parameters to its performance are also prensented. Design considerations and experimental results are presented for a 200W LED driver prototype which demonstrating good performance and the efficiency of the LLC resont converter can be reached above 95%.
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Watanabe, Hiroki, Jun-ichi Itoh, Naoki Koike, and Shinichiro Nagai. "PV Micro-Inverter Topology Using LLC Resonant Converter." Energies 12, no. 16 (August 13, 2019): 3106. http://dx.doi.org/10.3390/en12163106.

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In this paper, a DC–single-phase AC power converter with an LLC resonant converter is presented for a photovoltaic (PV) micro-inverter application. This application requires the leakage current suppression capability. Therefore, an isolated power converter is usually combined for DC/AC systems. The LLC resonant converter is the one of the isolated power converter topologies, and it has good performance for conversion efficiency with easy control. On the other hand, a double-line frequency power ripple has to be compensated for in order to improve the performance of the maximum power point tracking (MPPT). Therefore, a bulky electrolytic capacitor is usually necessary for the power converter. However, the electrolytic capacitor may limit the lifetime of the micro-inverter. This paper introduces the PV micro-inverter with a LLC resonant converter. In addition, the active power decoupling circuit is applied in order to compensate the double-line frequency power ripple by the small capacitor in order to eliminate the electrolytic capacitor. Finally, the transformer design is considered in order to reduce the transformer losses. As a result, the conversion efficiency of the LLC converter is improved by 1% when the litz wire has many strands.
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Gao, Tian, Qi Wang, Yan Yang, and He He. "Modeling and Design of High Power Half-Bridge LLC Resonant Converter." Advanced Materials Research 711 (June 2013): 367–74. http://dx.doi.org/10.4028/www.scientific.net/amr.711.367.

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ntroduction was made to the working principle of topology for the half-bridge LLC resonant converter. Steady-state models of the high power LLC resonant network were researched. The high power half-bridge LLC converter was modeled and analyzed with First Harmonic Approach so as to obtain the optimal parameters. The turn ration of the converter was selected. The resonant inductance, resonant capacitance and excitation inductance were designed. The feasibility of the high power LLC converter design has been verified through simulation.
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Zhu, Xian Tao, Shen Chen, Ling Wu, and Wei Yao. "Research on LLC DC-DC Transformer." Applied Mechanics and Materials 303-306 (February 2013): 1913–19. http://dx.doi.org/10.4028/www.scientific.net/amm.303-306.1913.

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Regulated DC-DC converter and unregulated DC-DC transformer is the basic types of DC-DC converter. Now the research is focusing on the regulated form named regulated LLC resonant DC-DC converter. Unregulated form of LLC resonant DC-DC converter named LLC resonant DC-DC transformer is studied in this paper in order to increase the practical topology of soft-switching and high-efficiency DC-DC transformer. Design method is proposed by the gain curve analyze of LLC resonant DC-DC transformer, and load characteristic of gain and efficiency of the DC-DC transformer is analyzed specializing for optimal design. A LLC resonant DC-DC transformer prototype is designed and implemented. Experimental results verify the correctness and validity of the design method and the load characteristic analysis.
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Cao, Ting. "The Design of High Power LED Driver Power Supply Based on the Pattern of LLC Harmonic." Advanced Materials Research 997 (August 2014): 862–67. http://dx.doi.org/10.4028/www.scientific.net/amr.997.862.

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The working principle of LLC resonant converter is analyzed. On the basis of the analysis, a high power LED driver power supply circuit is designed based on LLC resonant model. Driver circuit is two-stage: the pre-driver circuit using boundary-conduction mode controller L6562 achieves PFC function, while the post-stage LLC half-bridge topology provides constant pressure parts. This structure makes the overall efficiency of the circuit is higher. And the simulation experiment of the circuit is carried out and the experimental results verify that the driver power supply can achieve high efficiency, low loss and so on.
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Yan, Xiang Wu, Lei Sun, Bo Zhang, and Zheng Lv. "Investigation on Type-4 and Type-11 Mixed Topology of LLC Resonant Converter." Advanced Materials Research 960-961 (June 2014): 1254–57. http://dx.doi.org/10.4028/www.scientific.net/amr.960-961.1254.

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LLC resonant converter can adjust the output for a wide range of source and load with a small fluctuation of switching frequency, so it is used widely. This paper introduces all arrangements of LLC topological group, then proposes a new topology which is consist of Type-4 and Type-11 that used widely,in this paper we also give its calculate method of resonant frequency. Lastly we get gain characteristics of the topologies in the PSpice simulation environment and analyse the influence factors on adjustment ability in certain load range .
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Khalid, Umar, Muhammad Mansoor Khan, Muhammad Zahid Khan, Muhammad Ahmad Usman Rasool, and Jianming Xu. "Pulse Width and Frequency Hybrid Modulated LLC Converter Adapted to Ultra Wide Voltage Range." Inventions 3, no. 4 (November 11, 2018): 77. http://dx.doi.org/10.3390/inventions3040077.

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In wide voltage range applications such as electric vehicles (EVs) onboard charging, conventional frequency modulated LLC topology has its intrinsic limitations. Its frequency span is extremely wide and the soft switching feature might get lost. To address this issue, this paper proposes a novel LLC resonant converter. The pulse width and frequency hybrid modulation are adopted to narrow down its switching frequency span. The operating principles, circuit modeling, and the design methodology are presented. A 1 kW rated prototype has been built to realize an efficient power flow between the 400 V DC bus and 200–440 V battery pack. The designed prototype validates the effectiveness of the proposed topology and modulation method. 96.8% peak efficiency is measured for the constructed experimental prototype.
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Frivaldsky, Michal, Jan Morgos, and Andrej Kanovsky. "Dual Interleaved LLC Converter for High Power Applications and Wide Load Range." Elektronika ir Elektrotechnika 25, no. 3 (June 25, 2019): 4–9. http://dx.doi.org/10.5755/j01.eie.25.3.23669.

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Dual interleaved LLC resonant converter with half bridge topology of main circuit characterized by high switching frequency (500 kHz), high power density (60 W/inch3) and high efficiency (above 96 %) over entire operational range (20 %–100 %) is described. Focus was given on the practical design of power converter, which will be able to fulfil requirements on wide load range operation characterized by upcoming normative. Since proposed topology is based on dual interleaved LLC converter, the resonant component´s critical tolerance was also investigated to secure reliable and optimal operational point. Consequently, proposals for elimination of intolerance negative impact are also described. The results of theoretical analysis were verified directly through experimental measurements. Experimental results are finally compared with upcoming industrial standard 80 Plus Titanium.
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Xiong, Ze Cheng, Qiang Yin, Zhi Jun Luo, and Hao Pang. "Step-Up DC/DC Transformer Based on LLC Resonant Full Bridge." Applied Mechanics and Materials 734 (February 2015): 864–67. http://dx.doi.org/10.4028/www.scientific.net/amm.734.864.

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In view of the LLC series resonant converter topology, it is well known as suitable for small and medium power application, the stabilization of output voltage and the environment of step-dowm. The scheme is proposed for a kind of the step-up DC/DC transformer based on LLC resonant full bridge. The detailed design method is given. The 3KW prototype is built. The experimental results show it has the characteristics of the constant current discharge, wide working frequency and high power desity, as well, the feasibility is verified.
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Dissertations / Theses on the topic "LLC topology"

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Huang, Daocheng. "Investigation of Topology and Integration for Multi-Element Resonant Converters." Diss., Virginia Tech, 2014. http://hdl.handle.net/10919/24909.

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With the fast development of communication systems, computers and consumer electronics, the power supplies for telecoms, servers, desktops, laptops, flat-panel TVs, LED lighting, etc. are required for more efficient power delivery with smaller spaces. The LLC resonant converter has been widely adopted for these applications due to the advantages in high efficiency, high power density and holdup time operation capability. However, LLC resonant converter meets some issues, especially in high output current applications. Those issues include magnetic design, start-up, short-circuit protection, synchronous rectifier drive, EMI noise and integration, etc. To solve those issues, like start-up and short-circuit protection, SR driving and EMI, etc., a synthesis method is proposed to find the similar resonant topologies like LLC. Based on this method, lots of multi-element resonant converters are found to solve the issues that LLC resonant converter cannot handle. To evaluate the performance of found numerous valuable topologies. Thus, a general evaluation system is required. State-plane analysis with new normalization factors is utilized. Based on it, the voltage stress, current stresses and apparent power of resonant converters are easy to compare. This method can help select suitable circuit topology for certain applications. Meanwhile, it also can help resonant converters' design. The important performance factors, like start-up, short-circuit protection, SR driving, integration and EMI performance, are also taken into account for the whole evaluation system. The high switching frequency is needed recently for high power density requirement. However, LLC resonant converter suffers high transformer loss. Matrix transformer is introduced to reduce winding loss and total volume. Flux cancellation method is utilized to reduce core size and loss. Synchronous Rectifier (SR) devices and output capacitors are integrated into secondary windings to eliminate termination related winding losses, via loss and reduce leakage inductance. The passive integration is necessary for high power density resonant converter, especially for high order system. Based on stress, suitable passive components are chosen for integration. Then, the magnetic integration method is shown based on multi-winding transformer structure. The passive integration principles are discussed. A novel passive integration method is proposed for multi-elements resonant converters. In conclusion, this work is focus on the topology analysis and integration of resonant converters. Searching the suitable topologies for certain application, and evaluate the performance of them. Then, improve the system power density by integration techniques.
Ph. D.
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Chen, Haoning (William). "LLC Resonant Current Doubler Converter." Thesis, University of Canterbury. Electrical and Computer Engineering, 2013. http://hdl.handle.net/10092/8492.

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The telecommunications market is one of the large rapidly growing fields in today’s power supply industry due to the increasing demand for telecom distributed power supply (DPS) systems. The half-bridge LLC (Inductor-Inductor-Capacitor) resonant converter is currently the most attractive topology for the design and implementation of 24V/48V DC telecom power converters. The current doubler rectifier (CDR) converter topology was invented and described in the early 1950s which can offer the unique characteristic of halving the output voltage while doubling the output current compared to a standard rectifier. In this thesis, the current doubler converter topology with its unique characteristic is evaluated as a complementary solution to improve the LLC resonant converter performance, especially for the low output voltage and high output current telecommunication applications. A novel half-bridge LLC resonant current doubler converter (LLC-CDR) is proposed in this thesis which can offer several performance benefits compared to conventional LLC-standard rectifier design . The unique characteristics of the LLC-CDR topology can offer significant improvements by transformation of a 48V converter into a 24V converter with the same power density. This thesis introduces a new SPICE-based simulation model to analyse the operation of this novel LLC-CDR converter circuit design. This model can be used to define the critical component parameters for the LLC -CDR circuit output inductor values. It can also be used to predict the circuit overall performance under different load conditions. Both time-domain based transient simulation analysis and frequency-domain based AC analysis provided by this simulation model showed favourable results in comparison to bench measurement results on a prototype. The model provides a valuable insight to reveal some of the unique characteristics of this LLC -CDR topology. It demonstrates a proof of concept that the conventional LLC resonant converter can be easily redesigned for low voltage, high current applications by using the LLC-CDR topology without requiring a new design for the LLC resonant stage components and the power transformer. A new magnetic integration solution was proposed to significantly improve the overall performance in the LLC-CDR topology that had not been published before. The LLC-CDR converter hardware prototypes with two output inductors coupled and uncoupled configurations were extensively modelled, constructed and bench tested.Test results demonstrated the suitability of an integrated coupled inductors design for the novel LLC-CDR converter application. The integrated coupled inductors design can significantly improve the LLC-CDR converter frequency-domain based AC simulation analysis results. In addition, these results also illustrate the potential benefit of how the magnetic integration design in general could reduce the magnetic component size, cost, and weight compared to the uncoupled inductors design. Finally, a hardware prototype circuit was constructed based on a commercial 1800 W single phase telecom power converter to verify the operation of this novel half bridge LLC-CDR topology. The converter prototype successfully operated at both no load and full load conditions with the nominal output voltage halved from 48VDC to 24VDC, and doubled the output current to match the same output power density. It also demonstrates that the efficiency of this novel half bridge LLC –CDR is 92% compares to 90% of EATON’s commercial 24VDC LLC resonant converter, which can fulfill the research goals.
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Kollipara, Nagasri. "Control and Optimization of Power in LLC Converter Using Phase Control." Wright State University / OhioLINK, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=wright1535402155288153.

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Al, Shammeri Bashar Mohammed Flayyih. "A novel induction heating system using multilevel neutral point clamped inverter." Thesis, University of Plymouth, 2017. http://hdl.handle.net/10026.1/8305.

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This thesis investigates a novel DC/AC resonant inverter of Induction Heating (IH) system presenting a Multilevel Neutral Point Clamped (MNPCI) topology, as a new part of power supply design. The main function of the prototype is to provide a maximum and steady state power transfer from converter to the resonant load tank, by achieving zero current switching (ZCS) with selecting the best design of load tank topology, and utilizing the advantage aspects of both the Voltage Fed Inverter (VFI) and Current Fed Inverter (CFI) kinds, therefore it can considered as a hybrid-inverter (HVCFI) category . The new design benefits from series resonant inverter design through using two bulk voltage source capacitors to feed a constant voltage delivery to the MNPCI inverter with half the DC rail voltage to decrease the switching losses and mitigate the over voltage surge occurred in inverter switches during operation which may cause damage when dealing with high power systems. Besides, the design profits from the resonant load topology of parallel resonant inverter, through using the LLC resonant load tank. The design gives the advantage of having an output current gain value of about Quality Factor (Q) times the inverter current and absorbs the parasitic components. On the contrary, decreasing inverter current means decreasing the switching frequency and thus, decreasing the switching losses of the system. This aspect increases the output power, which increases the heating efficiency. In order for the proposed system to be more reliable and matches the characteristics of IH process , the prototype is modelled with a variable LLC topology instead of fixed load parameters with achieving soft switching mode of ZCS and zero voltage switching (ZVS) at all load conditions and a tiny phase shift angle between output current and voltage, which might be neglected. To achieve the goal of reducing harmonic distortion, a new harmonic control modulation is introduced, by controlling the ON switching time to obtain minimum Total Harmonic Distortion (THD) content accompanied with optimum power for heating energy.
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Baltrušaitis, Vytautas. "LLE algoritmo taikymas daugiamačiams duomenims vizualizuoti." Master's thesis, Lithuanian Academic Libraries Network (LABT), 2009. http://vddb.library.lt/obj/LT-eLABa-0001:E.02~2009~D_20090630_095032-57163.

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Šiame darbe buvo tiriama LLE algoritmo darbo kokybės priklausomybė nuo vienintelio tam įtakos turinčio parametro, tai taško kaimynų naudojamų skaičiavimams skaičiaus k. Taip pat buvo tiriamas keturių topologijos išlaikymo įverčių: Spirmano koeficiento, liekamosios dispersijos, DS paklaidos ir Prokrusto analizės tinkamumas LLE algoritmo darbo rezultatų kokybės įvertinimui, ir galimybė panaudojant juos parinkti geriausias taško kaimynų naudojamų skaičiavimuose skaičiaus k reikšmes, ar reikšmių intervalus. Tyrimai atlikti naudojant MATLAB 7.1programinę terpę.
The paper Application of LLE algorithm for visualization of multidimensional data deals with locally linear embedding (LLE) algorithm's quality of work dependence on number of nearest neighbors k used in calculations. In it four topology preservation measures: Spearman coefficient, residual variance, MDS errors and Procrustes analysis have also been tested. Their suitability for the algorithm’s quality of work assessment, and the possibility of using them to select the best number or ranges of values of nearest neighbors k used in calculations. Investigations were carried out using MATLAB 7.1 software.
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Verneaux, Valérie. "Structure, dynamique spatiale et temporelle du peuplement chironomidien du lac de l'abbaye (massif du jura) et approche typologique. Relation entre la topologie larvaire et la structuration des peuplements emergents." Besançon, 1996. http://www.theses.fr/1996BESA2036.

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A partir d'une methode de classification biologique de 9 lacs du jura (france), basee sur l'analyse de la diversite du macrobenthos endopelique en zone littorale et de la distribution bathymetrique de sa variete taxonomique, la recherche des taxons reperes, permettant la differenciation des systemes, montre l'importance des dipteres chironomides dans l'evaluation de la qualite des peuplements macrobenthiques. L'examen des relations existant entre 11 descripteurs biologiques du macrobenthos et 28 parametres mesologiques montre une discordance entre les criteres trophiques usuels et les descripteurs biologiques definis. Ce schema de classification des lacs a partir de l'ensemble des peuplements macrobenthiques a ete realise a un niveau de determination generique. Une augmentation du pouvoir discriminant de cette classification est envisagee par l'etude de la distribution bathymetrique des seules communautes chironomidiennes identifiees au niveau des especes. Nous avons donc teste, dans le lac de l'abbaye (massif du jura, france), la pertinence d'un protocole d'echantillonnage des especes par recolte des exuvies nymphales dans des pieges situes a l'aplomb de differentes isobathes. L'acquisition de donnees specifiques presentant un caractere pluri-saisonnier, nous avons montre la preponderance de l'effet spatial (bathymetrie) sur l'effet temporel (sept mois d'etude) dans la structuration spatio-temporelle resultante des peuplements larvaires. Ainsi, la profondeur d'emergence des especes est susceptible de refleter la structure verticale des peuplements larvaires elle-meme determinee par la variation saisonniere des conditions mesologiques. La determination de la distribution bathymetrique des especes par les exuvies nymphales se heurte cependant a un phenomene de derive. Une correction de cette derive par la determination d'un seuil d'occurence, permet de mettre en evidence une topologie specifique correspondant a la topologie larvaire. La structure bathymetrique des especes s'effectue en un continuum de la zone littorale vers les zones profondes exprimant une evolution progressive de l'ensemble des conditions mesologiques (complexe de facteurs). La recolte des exuvies nymphales a l'aplomb de differentes isobathes dans de nombreux lacs devrait permettre d'extraire l'essentiel commun de l'organisation spatiale des communautes chironomidiennes (typologie) et de mettre en evidence les particularites des systemes lacustres consideres isolement
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Bousson, N. "Recherche de nouveaux quarks lourds avec l'expérience ATLAS a u LHC - Mise en oeuvre d'algorithmes d'identification de jets issus de quarks b." Phd thesis, Aix-Marseille Université, 2012. http://tel.archives-ouvertes.fr/tel-00799180.

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L'hypothèse d'une quatrième famille de fermions - les particules de matière décrites au sein du Modèle Standard (MS) de la physique des particules - est un des plus simples modèles de nouvelle physique encore non exclu et accessible au démarrage du Large Hadron Collider (LHC) - le plus puissant collisionneur hadronique au monde depuis 2009. Cette thèse s'intéresse à la production d'une paire de quarks t' se désintégrant chacun en un boson W et un quark b. La recherche se focalise sur le domaine des très hautes masses, où la production peut être distinguée de la production de bruit de fond d'une paire de quark top en exploitant la cinématique des produits de désintégration des collisions proton-proton produites au centre du détecteur ATLAS. Nous présentons une stratégie originale exploitant en particulier la collimation des produits de la désintégration des bosons W de très grande impulsion transverse, permettant leur reconstruction explicite. L'analyse s'appuie sur un travail de mise en oeuvre des algorithmes d'identification des jets résultants de la fragmentation des quarks de saveur b. Ces algorithmes se basent sur la reconstruction très précise de la trajectoire des particules chargées, des vertex d'interactions primaires et des vertex de désintégrations secondaires présents au sein des jets. L'étiquetage-b permet à l'expérience ATLAS d'améliorer la (re)découverte du MS, ainsi que la sensibilité à la nouvelle physique. Il sera ainsi d'une grande importance pour les futures années d'opération du LHC, raison pour laquelle nous présentons une étude de prospective de ses performances attendues avec l'extension du détecteur à pixels d'ATLAS - détecteur clé de l'étiquetage-b - dénommée IBL et actuellement en construction. Notre recherche de quark t' quant à elle a permis d'établir une limite inférieure à la masse du quark t' de 656 GeV à partir des 4.7 fb^−1 de données 7 TeV collectées en 2011, ce qui est la meilleure limite à ce jour en recherche directe, avec également une interprétation dans le cadre du modèle de quarks dits 'vecteurs'.
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Somani, Utsav. "Design Optimization of LLC Topology and Phase Skipping Control of Three Phase Inverter for PV Applications." Master's thesis, 2013. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/6192.

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The world is heading towards an energy crisis and desperate efforts are being made to find an alternative, reliable and clean source of energy. Solar Energy is one of the most clean and reliable source of renewable energy on earth. Conventionally, extraction of solar power for electricity generation was limited to PV farms, however lately Distributed Generation form of Solar Power has emerged in the form of residential and commercial Grid Tied Micro-Inverters. Grid Tied Micro-Inverters are costly when compared to their string type counterparts because one inverter module is required for every single or every two PV panels whereas a string type micro-inverter utilizes a single inverter module over a string of PV panels. Since in micro-inverter every panel has a dedicated inverter module, more power per panel can be extracted by performing optimal maximum power tracking over single panel rather than over an entire string of panels. Power per panel extracted by string inverters may be lower than its maximum value as few of the panels in the string may or may not be shaded and thereby forming the weaker links of the system. In order to justify the higher costs of Micro-Inverters, it is of utmost importance to convert the available power with maximum possible efficiency. Typically, a micro-inverter consists of two important blocks; a Front End DC-DC Converter and Output DC-AC Inverter. This thesis proposes efficiency optimization techniques for both the blocks of the micro-inverter. This thesis aims to optimize the efficiency of the front end stage by proposing optimal design procedure for resonant parameters of LLC Topology as a Front End DC-DC Converter for PV Applications. It exploits the I-V characteristics of a solar panel to design the resonant parameters such that resonant LLC topology operates near its resonant frequency operating point which is the highest efficiency operating point of LLC Converter. Due to continuously variable irradiance levels of solar energy, available power for extraction is constantly varying which causes the PV Inverter operates at its peak load capacity for less than 15% of the day time. Every typical power converter suffers through poor light load efficiency performance because of the load independent losses present in a power converter. In order to improve the light load efficiency performance of Three Phase Inverters, this thesis proposes Phase Skipping Control technique for Three Phase Grid Tied Micro-Inverters. The proposed technique is a generic control technique and can be applied to any inverter topology, however, in order to establish the proof of concept this control technique has been implemented on Three Phase Half Bridge PWM Inverter and its analysis is provided. Improving light load efficiency helps to improve the CEC efficiency of the inverter.
M.S.E.E.
Masters
Electrical Engineering and Computing
Engineering and Computer Science
Electrical Engineering
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Book chapters on the topic "LLC topology"

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Karimova, Gouzel, and Daniel Ladant. "Defining Membrane Protein Topology Using pho-lac Reporter Fusions." In Methods in Molecular Biology, 129–42. New York, NY: Springer New York, 2017. http://dx.doi.org/10.1007/978-1-4939-7033-9_10.

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Boral, Subhabrata, and Nitai Pal. "LCL Topology-Based Wireless Charging Unit for Electric Vehicles." In Lecture Notes in Electrical Engineering, 3–15. Singapore: Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-16-1978-6_1.

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Kumari, Priyanka, Amandeep Kaur Kalsi, Nitish Dhingra, Vipin Bhatnagar, and J. B. Singh. "Search for Supersymmetry in Vector Boson Fusion Topology Using Proton–Proton Collision Data at the LHC." In XXII DAE High Energy Physics Symposium, 175–78. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-73171-1_39.

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Daneshfar, Fatemeh. "Applications of Reinforcement Learning and Bayesian Networks Algorithms to the Load-Frequency Control Problem." In Handbook of Research on Novel Soft Computing Intelligent Algorithms, 677–710. IGI Global, 2014. http://dx.doi.org/10.4018/978-1-4666-4450-2.ch023.

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Load-Frequency Control (LFC) is an essential auxiliary service to keep the electrical system reliability at a suitable level. In addition to the regulating area frequency, the LFC system should control the net interchange power with neighboring areas at scheduled values. Therefore, a desirable LFC performance is achieved by effective adjusting of generation to minimize frequency deviation and regulate tie-line power flows. Nowadays such an LFC design is becoming much more complicated and significant due to the complexity of interconnected power systems. However, most of the LFC designs are based on conventional Proportional-Integral (PI) controllers that are tuned online by trial-and-error approaches. These conventional LFC designs are usually suitable for working at specific operating points and are not more efficient for modern and distributed power systems. These problems apply to design of intelligent LFC schemes that are more adaptive and flexible than conventional ones. The present chapter addresses the frequency regulation using Reinforcement Learning (RL) and Bayesian Networks (BNs) approaches for interconnected power systems. RL and BNs are computational learning based solutions which can adapt with environment conditions. They are a kind of Machine Learning (ML) techniques which have many applications in power system engineering. The main advantages of these intelligent-based solutions for the LFC design can be simplicity and intuitive model building that is closely based on the physical power system topology, easy incorporation of uncertainty, and dependent to the frequency response model and also to the power system parameter values.
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Latora, Vito, and Massimo Marchiori. "The Architecture of Complex Systems." In Nonextensive Entropy. Oxford University Press, 2004. http://dx.doi.org/10.1093/oso/9780195159769.003.0027.

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At the present time, the most commonly accepted definition of a complex system is that of a system containing many interdependent constituents which interact nonlinearly. Therefore, when we want to model a complex system, the first issue has to do with the connectivity properties of its network, the architecture of the wirings between the constituents. In fact, we have recently learned that the network structure can be as important as the nonlinear interactions between elements, and an accurate description of the coupling architecture and a characterization of the structural properties of the network can be of fundamental importance also in understanding the dynamics of the system. In the last few years the research on networks has taken different directions producing rather unexpected and important results. Researchers have: (1) proposed various global variables to describe and characterize the properties of realworld networks and (2) developed different models to simulate the formation and the growth of networks such as the ones found in the real world. The results obtained can be summed up by saying that statistical physics has been able to capture the structure of many diverse systems within a few common frameworks, though these common frameworks are very different from the regular array, or capture the random connectivity, previously used to model the network of a complex system. Here we present a list of some of the global quantities introduced to characterize a network: the characteristic path length L, the clustering coefficient C, the global efficiency E<sub>glob</sub>, the local efficiency E<sub>loc</sub>, the cost Cost, and the degree distribution P(k). We also review two classes of networks proposed: smallworld and scale-free networks. We conclude with a possible application of the nonextensive thermodynamics formalism to describe scale-free networks. Watts and Strogatz [17] have shown that the connection topology of some biological, social, and technological networks is neither completely regular nor completely random. These networks, that are somehow in between regular and random networks, have been named small worlds in analogy with the smallworld phenomenon empirically observed in social systems more than 30 years ago [11, 12].
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Conference papers on the topic "LLC topology"

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CHENG, Chi Man, Tak Lok SHUM, and Shek Mong WONG. "Dynamical Frequency Displacement Scheme for Fault-tolerant LLC Topology." In 2020 21st International Conference on Electronic Packaging Technology (ICEPT). IEEE, 2020. http://dx.doi.org/10.1109/icept50128.2020.9201928.

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Kim, Eun-Soo, Bong-Geon Chung, Sung-In Kang, In-Su Cha, and Moon-Ho Kye. "A Novel Topology of Secondary LLC Series Resonant Converter." In PEC 07 - Twenty-Second Annual IEEE Applied Power Electronics Conference and Exposition. IEEE, 2007. http://dx.doi.org/10.1109/apex.2007.357735.

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Wei, Yuqi, and Alan Mantooth. "Topology Morphing Control Strategies for Full-bridge LLC Converter." In 2020 5th IEEE Workshop on the Electronic Grid (eGRID). IEEE, 2020. http://dx.doi.org/10.1109/egrid48559.2020.9330664.

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Wei, Yuqi, and Alan Mantooth. "An LLC Topology Suitable for Renewable Energy System Applications." In 2020 IEEE 1st China International Youth Conference on Electrical Engineering (CIYCEE). IEEE, 2020. http://dx.doi.org/10.1109/ciycee49808.2020.9332656.

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Wei, Yuqi, and Alan Mantooth. "A Flexible LLC Topology for Wide Voltage Gain Range Application." In 2021 IEEE 12th Energy Conversion Congress & Exposition - Asia (ECCE-Asia). IEEE, 2021. http://dx.doi.org/10.1109/ecce-asia49820.2021.9479237.

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Wei Chen and Zhengyu Lu. "Investigation on topology for Type-4 LLC resonant Dc-Dc converter." In 2008 IEEE Power Electronics Specialists Conference - PESC 2008. IEEE, 2008. http://dx.doi.org/10.1109/pesc.2008.4592134.

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Yan, Jinghui, Xiaonan Zhao, Cheng-wei Chen, and Jil-Sheng Lai. "Comparison of Secondary Topology of the LLC Converter for Photovoltaic Application." In 2018 IEEE Energy Conversion Congress and Exposition (ECCE). IEEE, 2018. http://dx.doi.org/10.1109/ecce.2018.8557734.

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Yuepeng, Wang, Yan Zhaoyang, Tian Meng, and Xiao Ying. "Positive/Negative Pulse Charging Technology of Battery Based on PFC-LLC Topology." In 2015 Fifth International Conference on Instrumentation & Measurement, Computer, Communication and Control (IMCCC). IEEE, 2015. http://dx.doi.org/10.1109/imccc.2015.223.

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9

Altin, Necmi, Saban Ozdemir, and Adel Nasiri. "A Novel Solar PV Inverter Topology Based on an LLC Resonant Converter." In 2019 IEEE Energy Conversion Congress and Exposition (ECCE). IEEE, 2019. http://dx.doi.org/10.1109/ecce.2019.8912924.

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10

Clerici Daros, Giancarlo, João Pedro Scherer Cipriani, Maikel Fernando Menke, and Álysson Raniere Seidel. "Single-Stage LED Driver with Dimming and Universal Input Voltage Capability." In Congresso Brasileiro de Automática - 2020. sbabra, 2020. http://dx.doi.org/10.48011/asba.v2i1.1530.

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This paper presents a boost bridgeless totem-pole converter operating as power factor correction (PFC) stage integrated with a half-bridge LLC resonant converter as power control (PC) stage. The resultant single-stage converter yields in an effective integration, reducing the number of switches from 4 to 2 (50% reduction). This integrated topology aims decreasing conduction and commutation power losses and, moreover, achieving high power factor (PF), low total harmonic distortion (THD) and good efficiency. The converter is designed to have a fixed bus voltage, which is controlled by changing the half-bridge duty cycle under universal input voltage (UIV). However, since the HB duty cycle also affects the LLC converter due to their integration, a variable inductor is employed to control the LLC impedance and achieve a controlled output current and dimming capability, consequently a constant frequency operation is achieved. Simulation results are presented to verify the theorical analysis, through a 100 W LED luminaire. The results show voltage and current levels in the topology, as well as PF and THD levels in compliance with IEC 61000-3-2. Moreover, it is shown the feasibility of output current control capability through variable inductor even with HB duty cycle variation.
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