Готові списки джерел за темами / High Frequency Planar Transformer

Добірка наукової літератури з теми "High Frequency Planar Transformer"

Автор: Grafiati
Опубліковано: 14 березня 2023

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Статті в журналах з теми "High Frequency Planar Transformer"

1

Tria, Lew Andrew R., Daming Zhang, and John E. Fletcher. "High-Frequency Planar Transformer Parameter Estimation." IEEE Transactions on Magnetics 51, no. 11 (November 2015): 1–4. http://dx.doi.org/10.1109/tmag.2015.2443791.

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2

Fu Wong and Junwei Lu. "High frequency planar transformer with helical winding structure." IEEE Transactions on Magnetics 36, no. 5 (2000): 3524–26. http://dx.doi.org/10.1109/20.908886.

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3

Shen, Zhan, Bingxin Xu, Chenglei Liu, Cungang Hu, Bi Liu, Zhike Xu, Long Jin, and Wu Chen. "The Modeling and Simplification of a Thermal Model of a Planar Transformer Based on Internal Power Loss." Sustainability 14, no. 19 (September 21, 2022): 11915. http://dx.doi.org/10.3390/su141911915.

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Анотація:
With the development of high-performance wide-band-gap devices and increasing converter frequency, planar transformers are widely used in high-frequency and high-power-density power conversions. Due to the skin effect and proximity effect, accurate thermal analysis and a simplified thermal model of planar transformers are needed for quick thermal verification as well as system design. This paper proposes two thermal simplification models based on the planar transformer’s thermal impedance network. The internal power loss and thermal coupling between each component are first analyzed. Then, based on thermal radiation theory, the simplified thermal model of the planar transformer is presented. It only requires the input of the total power loss of the planar transformer to calculate the temperature rise, and it does not need the power loss of each component. Finally, the simulation and experimental verification are carried out on a MHz prototype.
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4

Ma, Yu, and Zhaoming Qian. "A Hybrid Equivalent Model of High Frequency Planar Transformer." Journal of Nanoelectronics and Optoelectronics 12, no. 8 (August 1, 2017): 795–97. http://dx.doi.org/10.1166/jno.2017.2138.

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5

Orosz, Tamás, Mariusz Stępień, and Peter Poór. "Design Analysis of High Frequency Linear Transformer with Ārtap Framework." Periodica Polytechnica Electrical Engineering and Computer Science 65, no. 2 (April 19, 2021): 146–51. http://dx.doi.org/10.3311/ppee.17488.

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Анотація:
This paper presents the design and a design analysis of a coaxial, linear transformer. This is a novel high frequency transformer concept for energy conversion. The examined transformer was designed for 1 MHz nominal frequency. One of the main advantages of the proposed transformer design is its simple winding system. It contains only two coaxial copper tubes, which can be easily manufactured and modeled with high precision. One of the key design tasks is the minimization of the leakage inductance. The inductance of the straight coils depends on the ratio of the height and the diameter of the coil. Therefore, a three-dimensional FEM analysis is sufficient to calculate the optimal length of the linear transformer. The planar 2D model and the 3D model of the transformer are presented in this paper. The accuracy of the 2D and 3D calculation results were compared to each other and to the measurements to show the applicability of the planar 2D models. Moreover, the sensitivity of the losses and the leakage inductance with respect to the winding parameters is presented. The dependencies of the design variables on the performance parameters, such as the power mass density and the leakage inductance of this transformer concept were examined. It was shown that the value of the leakage inductance is a linear function of the ratio of the length and the diameter of the transformer windings.
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6

Morrill, M. A., V. A. Caliskan, and C. Q. Lee. "High-frequency planar power transformers." IEEE Transactions on Power Electronics 7, no. 3 (July 1992): 607–13. http://dx.doi.org/10.1109/63.145149.

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7

Thomy, Simon, Xavier Margueron, Jean-Sylvio Ngoua Teu Magambo, Reda Bakri, and Philippe Le Moigne. "Conception of High-Frequency Power Planar Transformer Prototypes Based on FabLab Platform." Electricity 3, no. 1 (December 21, 2021): 1–15. http://dx.doi.org/10.3390/electricity3010001.

Повний текст джерела
Анотація:
Conceiving planar magnetic components for power electronic converters is very constraining, especially in the case of prototype development. Indeed, such making requires skills, specific appliances as well as human time for setting up the machine tools and the fabrication process. With the emergence of Fabrication Laboratory (FabLab), conceiving of planar copper foil prototypes becomes more feasible in a shortened time process for engineers and researchers. This paper presents a methodology and process for conceiving power planar transformers with the help of machines and tools that can be found in the usual FabLab.
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8

Ding, Xiao Dong, and Yan An Wang. "Prototype Design of Rectifier Transformer for High Power Density." Applied Mechanics and Materials 313-314 (March 2013): 797–803. http://dx.doi.org/10.4028/www.scientific.net/amm.313-314.797.

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Анотація:
The traditional high-voltage high-frequency transformer has a drawback of low power density due to the rigorous requirements of high voltage insulation. This paper proposes a new configuration for the magnetic core based on planar EE cores. The parallel connection of planar cores was adopted as a unit, and several units were cascaded to form the high-voltage transformer. The electrical potential distribution of the proposed transformer is more uniform than a traditional transformer, and enables a decrease in the insulation distances. The mechanical configuration of a laboratory prototype is discussed, as well as the electrical, parasitic, and thermal behaviors.
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9

Lee, Dae-Woo, Ji-Hoon Lim, Dong-In Lee, and Han-Shin Youn. "A High-Power-Density Active-Clamp Converter with Integrated Planar Transformer." Energies 15, no. 15 (August 2, 2022): 5609. http://dx.doi.org/10.3390/en15155609.

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Анотація:
This paper proposes an active-clamp forward-flyback (ACFF) converter with an integrated planar transformer for wide-input voltage and high-output current applications, such as low-voltage direct-current (LDC) converters in electric vehicles. An integrated planar transformer that consists of a forward-flyback transformer, single primary winding, and efficient structure of secondary windings is adopted for the proposed converter, and since this transformer is implemented with a common four-layer printed circuit board (PCB) winding, a high power density and low cost of the proposed converter can be achieved. In addition, due to the low leakage inductance induced by the planar transformer, a reduced commutation period can be achieved, and it is possible to increase the switching frequency resulting in low volume of transformer. Although the integrated planar transformer has relatively high conduction loss, the active-clamp topology can significantly reduce the conduction loss on switches compared with widely used full-bridge (FB) converters because it only utilizes two switches and shows the low circulating current. As a result, the proposed converter with an integrated planar transformer has strengths in high power density and cost competitiveness without degraded efficiency, and it is a very attractive topology for LDC converters and other applications that require wide-input voltage and high-output current.
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10

van der Linde, D., C. A. M. Boon, and J. B. Klaassens. "Design of a high-frequency planar power transformer in multilayer technology." IEEE Transactions on Industrial Electronics 38, no. 2 (April 1991): 135–41. http://dx.doi.org/10.1109/41.88907.

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Більше джерел

Дисертації з теми "High Frequency Planar Transformer"

1

Wong, Fu Keung, and n/a. "High Frequency Transformer for Switching Mode Power Supplies." Griffith University. School of Microelectronic Engineering, 2004. http://www4.gu.edu.au:8080/adt-root/public/adt-QGU20050211.110915.

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Анотація:
A power supply is an essential part of all electronic devices. A switching mode power supply is a light weight power solution for most modern electronic equipment. The high frequency transformer is the backbone of modern switched mode power supplies. The skin effect and proximity effects are major problems in high frequency transformer design, because of induced eddy currents. These effects can result in transformers being destroyed and losing their power transferring function at high frequencies. Therefore, eddy currents are unwanted currents in high frequency transformers. Leakage inductance and the unbalanced magnetic flux distribution are two further obstacles for the development of high frequency transformers. Winding structures of power transformers are also a critical part of transformer design and manufacture, especially for high frequency applications. A new planar transformer with a helical winding structure has been designed and can maintain the advantages of existing planar transformers and significantly reduce the eddy currents in the windings. The maximum eddy current density can be reduced to 27% of the density of the planar transformer with meander type winding structure and 33% of the density of the transformer with circular spiral winding structure at an operating frequency of 1MHz. The voltage ratio of the transformer with helical winding structure is effectively improved to 150% of the voltage ratio of the planar transformer with circular spiral coils. With the evenly distributed magnetic flux around the winding, the planar transformer with helical winding structure is excellent for high frequency switching mode power supplies in the 21st Century.
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2

Wong, Fu Keung. "High Frequency Transformer for Switching Mode Power Supplies." Thesis, Griffith University, 2004. http://hdl.handle.net/10072/367650.

Повний текст джерела
Анотація:
A power supply is an essential part of all electronic devices. A switching mode power supply is a light weight power solution for most modern electronic equipment. The high frequency transformer is the backbone of modern switched mode power supplies. The skin effect and proximity effects are major problems in high frequency transformer design, because of induced eddy currents. These effects can result in transformers being destroyed and losing their power transferring function at high frequencies. Therefore, eddy currents are unwanted currents in high frequency transformers. Leakage inductance and the unbalanced magnetic flux distribution are two further obstacles for the development of high frequency transformers. Winding structures of power transformers are also a critical part of transformer design and manufacture, especially for high frequency applications. A new planar transformer with a helical winding structure has been designed and can maintain the advantages of existing planar transformers and significantly reduce the eddy currents in the windings. The maximum eddy current density can be reduced to 27% of the density of the planar transformer with meander type winding structure and 33% of the density of the transformer with circular spiral winding structure at an operating frequency of 1MHz. The voltage ratio of the transformer with helical winding structure is effectively improved to 150% of the voltage ratio of the planar transformer with circular spiral coils. With the evenly distributed magnetic flux around the winding, the planar transformer with helical winding structure is excellent for high frequency switching mode power supplies in the 21st Century.
Thesis (PhD Doctorate)
Doctor of Philosophy (PhD)
School of Microelectronic Engineering
Full Text
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3

Kotte, Hari Babu. "High Frequency (MHz) Resonant Converters using GaN HEMTs and Novel Planar Transformer Technology." Doctoral thesis, Mittuniversitetet, Avdelningen för elektronikkonstruktion, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:miun:diva-20894.

Повний текст джерела
Анотація:
The increased power consumption and power density demands of modern technologies have increased the technical requirements of DC/DC and AC/DC power supplies. In this regard, the primary objective of the power supply researcher/engineer is to build energy efficient, high power density converters by reducing the losses and increasing the switching frequency of converters respectively. Operating the converter circuits at higher switching frequencies reduces the size of the passive components such as transformers, inductors, and capacitors, which results in a compact size, weight, and increased power density of the converter. Therefore, the thesis work is focussed on the design, analysis and evaluation of isolated converters operating in the 1 - 5MHz frequency region with the assistance of the latest semi conductor devices, both coreless and core based planar power transformers designed in Mid Sweden University and which are suitable for consumer applications of varying power levels ranging from 1 – 60W. In high frequency converter circuits, since the MOSFET gate driver plays a prominent role, different commercially available MOSFET gate drivers were evaluated in the frequency range of 1 - 5MHz in terms of gate drive power consumption, rise/fall times and electromagnetic interference (EMI) and a suitable driver was proposed. Initially, the research was focused on the design and evaluation of a quasi resonant flyback converter using a multilayered coreless PCB step down transformer in the frequency range of 2.7 – 4MHz up to the power level of 10W. The energy efficiency of this converter is found to be 72 - 84% under zero voltage switching conditions (ZVS). In order to further improve the energy efficiency of the converter in the MHz frequency region, the new material device GaN HEMT was considered. The comparisons were made on a quasi resonant flyback DC-DC converter using both the Si and GaN technology and it was found that an energy efficiency improvement of 8 – 10% was obtained with the GaN device in the frequency range of 3.2 – 5MHz. In order to minimize the gate drive power consumption, switching losses and to increase the frequency of the converter in some applications such as laptop adapters, set top box (STB) etc., a cascode flyback converter using a low voltage GaN HEMT and a high voltage Si MOSFET was designed and evaluated using a multi-layered coreless PCB transformer in the MHz frequency region. Both the simulation and experimental results have shown that, with the assistance of the cascode flyback converter, the switching speeds of the converter can be increased with the benefit of obtaining a significant improvement in the energy efficiency as compared to that for the single switch flyback converter. In order to further maximize the utilization of the transformer, to reduce the voltage stress on MOSFETs and to obtain the maximum power density from the converter circuit, double ended topologies were considered. Due to the lack of high voltage high side gate drivers in the MHz frequency region, a gate drive circuitry utilizing the multi-layered coreless PCB signal transformer was designed and evaluated in both a half-bridge and series resonant converter (SRC). It was found that the gate drive power consumption using this transformer was around 0.66W for the frequency range of 1.5 - v 3.75 MHz. In addition, by using this gate drive circuitry, the maximum energy efficiency of the SRC using multilayered coreless PCB power transformer was found to be 86.5% with an output power of 36.5W in the switching frequency range of 2 – 3MHz. In order to further enhance the energy efficiency of the converter to more than 90%, investigations were carried out by using the multiresonant converter topology (LCC and LLC), novel hybrid core high frequency planar power transformer and the GaN HEMTs. The simulated and experimental results of the designed LCC resonant converter show that it is feasible to obtain higher energy efficiency isolated DC/DC converters in the MHz frequency region. The peak energy efficiency of the LCC converter at 3.5MHz is reported to be 92% using synchronous rectification. Different modulation techniques were implemented to regulate the converter for both line and load variations using a digital controller. In order to realize an AC/DC converter suitable for a laptop adapter application, consideration was given to the low line of the universal input voltage range due to the GaN switch limitation. The energy efficiency of the regulated converter operating in the frequency range of 2.8 – 3.5MHz is reported to be more than 90% with a load power of 45W and an output voltage of 22V dc. In order to determine an efficient power processing method on the secondary side of the converter, a comparison was made between diode rectification and synchronous rectification and optimal rectification was proposed for the converters operating in the MHz frequency range for a given power transfer application. In order to maintain high energy efficiency for a wide load range and to maintain the narrow switching frequency range for the given input voltage specifications, the LLC resonant converter has been designed and evaluated for the adapter application. From the observed results, the energy efficiency of the LLC resonant converter is maintained at a high level for a wide load range as compared to that for the LCC resonant converter. Investigations were also carried out on isolated class E resonant DC-DC converter with the assistance of GaN HEMT and a high performance planar power transformer at the switching frequency of 5MHz. The simulated energy efficiency of the converter for the output power level of 16W is obtained as 88.5% which makes it feasible to utilize the designed isolated converter for various applications that require light weight and low profile converters. In conclusion, the research in this dissertation has addressed various issues related to high frequency isolated converters and has proposed solution by designing highly energy efficient converters to meet the current industrial trends by using coreless and core based planar transformer technologies along with the assistance of GaN HEMTs. With the provided solution, in the near future, it is feasible to realize low profile, high power density DC/DC and AC/DC converters operating in MHz frequency region suitable for various applications.
High Frequency Switch Mode Power Supplies
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4

Ambatipudi, Radhika. "High Frequency (MHz) Planar Transformers for Next Generation Switch Mode Power Supplies." Doctoral thesis, Mittuniversitetet, Avdelningen för elektronikkonstruktion, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:miun:diva-20270.

Повний текст джерела
Анотація:
Increasing the power density of power electronic converters while reducing or maintaining the same cost, offers a higher potential to meet the current trend inrelation to various power electronic applications. High power density converters can be achieved by increasing the switching frequency, due to which the bulkiest parts, such as transformer, inductors and the capacitor's size in the convertercircuit can be drastically reduced. In this regard, highly integrated planar magnetics are considered as an effective approach compared to the conventional wire wound transformers in modern switch mode power supplies (SMPS). However, as the operating frequency of the transformers increase from several hundred kHz to MHz, numerous problems arise such as skin and proximity effects due to the induced eddy currents in the windings, leakage inductance and unbalanced magnetic flux distribution. In addition to this, the core losses whichare functional dependent on frequency gets elevated as the operating frequency increases. Therefore, this thesis provides an insight towards the problems related to the high frequency magnetics and proposes a solution with regards to different aspects in relation to designing high power density, energy efficient transformers.The first part of the thesis concentrates on the investigation of high power density and highly energy efficient coreless printed circuit board (PCB) step-down transformers useful for stringent height DC-DC converter applications, where the core losses are being completely eliminated. These transformers also maintain the advantages offered by existing core based transformers such as, high coupling coefficient, sufficient input impedance, high energy efficiency and wide frequencyband width with the assistance of a resonant technique. In this regard, several coreless PCB step down transformers of different turn’s ratio for power transfer applications have been designed and evaluated. The designed multilayered coreless PCB transformers for telecom and PoE applications of 8,15 and 30W show that the volume reduction of approximately 40 - 90% is possible when compared to its existing core based counterparts while maintaining the energy efficiency of the transformers in the range of 90 - 97%. The estimation of EMI emissions from the designed transformers for the given power transfer application proves that the amount of radiated EMI from a multilayered transformer is lessthan that of the two layered transformer because of the decreased radius for thesame amount of inductance.The design guidelines for the multilayered coreless PCB step-down transformer for the given power transfer application has been proposed. The designed transformer of 10mm radius has been characterized up to the power level of 50Wand possesses a record power density of 107W/cm3 with a peak energy efficiency of 96%. In addition to this, the design guidelines of the signal transformer fordriving the high side MOSFET in double ended converter topologies have been proposed. The measured power consumption of the high side gate drive circuitvitogether with the designed signal transformer is 0.37W. Both these signal andpower transformers have been successfully implemented in a resonant converter topology in the switching frequency range of 2.4 – 2.75MHz for the maximum load power of 34.5W resulting in the peak energy efficiency of converter as 86.5%.This thesis also investigates the indirect effect of the dielectric laminate on the magnetic field intensity and current density distribution in the planar power transformers with the assistance of finite element analysis (FEA). The significanceof the high frequency dielectric laminate compared to FR-4 laminate in terms of energy efficiency of planar power transformers in MHz frequency region is also explored.The investigations were also conducted on different winding strategies such as conventional solid winding and the parallel winding strategies, which play an important role in the design and development of a high frequency transformer and suggested a better choice in the case of transformers operating in the MHz frequency region.In the second part of the thesis, a novel planar power transformer with hybrid core structure has been designed and evaluated in the MHz frequency region. The design guidelines of the energy efficient high frequency planar power transformerfor the given power transfer application have been proposed. The designed corebased planar transformer has been characterized up to the power level of 50W and possess a power density of 47W/cm3 with maximum energy efficiency of 97%. This transformer has been evaluated successfully in the resonant converter topology within the switching frequency range of 3 – 4.5MHz. The peak energy efficiency ofthe converter is reported to be 92% and the converter has been tested for the maximum power level of 45W, which is suitable for consumer applications such as laptop adapters. In addition to this, a record power density transformer has been designed with a custom made pot core and has been characterized in thefrequency range of 1 - 10MHz. The power density of this custom core transformer operating at 6.78MHz frequency is 67W/cm3 and with the peak energy efficiency of 98%.In conclusion, the research in this dissertation proposed a solution for obtaining high power density converters by designing the highly integrated, high frequency(1 - 10MHz) coreless and core based planar magnetics with energy efficiencies inthe range of 92 - 97%. This solution together with the latest semiconductor GaN/SiC switching devices provides an excellent choice to meet the requirements of the next generation ultra flat low profile switch mode power supplies (SMPS).
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5

Prasai, Anish. "Methodologies for Design-Oriented Electromagnetic Modeling of Planar Passive Power Processors." Thesis, Virginia Tech, 2006. http://hdl.handle.net/10919/34164.

Повний текст джерела
Анотація:
The advent and proliferation of planar technologies for power converters are driven in part by the overall trends in analog and digital electronics. These trends coupled with the demands for increasingly higher power quality and tighter regulations raise various design challenges. Because inductors and transformers constitute a rather large part of the overall converter volume, size and performance improvement of these structures can subsequently enhance the capability of power converters to meet these application-driven demands. Increasing the switching frequency has been the traditional approach in reducing converter size and improving performance. However, the increase in switching frequency leads to increased power loss density in windings and core, with subsequent increase in device temperature, parasitics and electromagnetic radiation. An accurate set of reduced-order modeling methodologies is presented in this work in order to predict the high-frequency behavior of inductors and transformers. Analytical frequency-dependent expressions to predict losses in planar, foil windings and cores are given. The losses in the core and windings raise the temperature of the structure. In order to ensure temperature limitation of the structure is not exceeded, 1-D thermal modeling is undertaken. Based on the losses and temperature limitation, a methodology to optimize performance of magnetics is outlined. Both numerical and analytical means are employed in the extraction of transformer parasitics and cross-coupling. The results are compared against experimental measurements and are found to be in good accord. A simple near-field electromagnetic shield design is presented in order to mitigate the amount of radiation. Due to inadequacy of existing winding technology in forming suitable planar windings for PCB application, an alternate winding scheme is proposed which relies on depositing windings directly onto the core.
Master of Science
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6

Besri, Abdelhadi. "Modélisation analytique et outils pour l'optimisation des transformateurs de puissance haute fréquence planars." Phd thesis, Université de Grenoble, 2011. http://tel.archives-ouvertes.fr/tel-00612344.

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Анотація:
Avec un encombrement minimal et rendement de 99% les transformateurs planars haute fréquence sont des solutions technologiques importantes pour les systèmes de conversion et de conditionnement de l'énergie électrique en électronique de puissance. L'objectif de l'étude consiste à rechercher un modèle du composant permettant à la fois de simuler son comportement dans un circuit d'électronique de puissance et d'optimiser ses performances lors de sa conception. Les modèles proposés prennent en compte les propriétés physiques et géométriques du composant. Les validations sont basées sur des confrontations avec les mesures. Une autre motivation forte de ce travail est que les modélisations numériques doivent prendre en compte simultanément les effets des courants induits et les capacités parasites, ce qui conduit, en haute fréquence, à des besoins prohibitifs en termes de capacité mémoire ou de temps de calcul. En se limitant aux transformateurs planar. La modélisation (dite LEEC) présentée ici s'appuie sur une discrétisation à échelle intermédiaire : spire par spire, c'est-à-dire couche par couche. Elle assemble deux approches analytiques déjà introduites par l'équipe : la première traite les aspects électrocinétiques (incluant les courants induits) et magnétiques et l'autre les aspects électrostatiques. Les circuits à constantes localisées basés sur la méthode LEEC montrent un très bon accord avec toutes les mesures jusqu'à 40 MHz. Des outils numériques sont aussi développés pour faciliter l'obtention de ces différents circuits en partant : soit de la description du composant, soit de mesures d'impédances. Pour compléter, la représentation des capacités d'un transformateur quelconque, développée en plusieurs étapes par l'équipe, est résumée et des précautions expérimentales originales appliquées à l'impédancemétrie sont exposées dans le détail. D'autres travaux visant à élargir le champ d'application de la méthode LEEC sont également présentés.
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7

Jansson, Vincent, David Bergman, and Niklas Hermansson. "High Frequency Transformer : Implementation of prototype." Thesis, Uppsala universitet, Elektricitetslära, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-387307.

Повний текст джерела
Анотація:
Since its invention in 1885 by Otto Bláthy, Miksa Déri and KárolyZipernowsky, transformers have become an important cornerstone of theelectrical infrastructure we have today. They are found mostprominently in any machinery or device that requires a differentlevel of voltage or current than a general grid can supply, such ascomputers, motors or even cars. In the case of this project, thetransformer was originally intended to be connected to a resonatingH-bridge which supplies the primary coil with high frequency voltagepulses to be converted into a higher voltage transferred to arectifier unit. Because of the level of frequency supplied, thetransformer was required to be constructed with a different type ofcore and cable for the winding. When it became clear that the cablecouldn't be supplied in time, the focus shifted towards constructinga prototype instead. The prototype was designed to generate a certainamount of leakage inductance while subjected to a short circuit test.After a couple of attempts, the group managed to construct atransformer whose leakage inductance was well within range of thespecifications. The finished transformer prototype was delivered andthe group had thus successfully constructed what is to be used as atemplate for further transformers of the same type.A special thanks to ScandiNova Systems AB for initiating this projectand giving us the opportunity to participate, and to Per Nilsson, PerBenkowski and Klas Elmqvist for mentoring us along the way.
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8

Al-Alawi, Hamed. "High frequency modeling of a transformer winding." Thesis, Al-Alawi, Hamed (2012) High frequency modeling of a transformer winding. Other thesis, Murdoch University, 2012. https://researchrepository.murdoch.edu.au/id/eprint/13092/.

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Анотація:
Major faults in power transformer windings usually originate from small charges called partial discharges (PD). These discharges could lead to a breakdown in insulation and ultimate failure in the power transformers if they are allowed to develop. Therefore, this thesis will present and develop a high-frequency model of power transformer winding, which can detect the propagation of high-frequency partial discharges in a continuous disc type of high-voltage transformer winding. The lumped parameter model will be used to simulate the windings of the power transformer. This model represents the transformer winding with two discs of the winding represented by a single circuit. PD will be injected at different locations along the model. Using the knowledge of the frequency response of the winding within the faulty transformer, will help locating the partial discharges on the windings. Locating PDs in high-voltage power transformers, is useful for those who maintain the equipment.
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9

Li, Jeffrey. "Integrated High Frequency Transformer Design Virtual Laboratory." Thesis, Griffith University, 2015. http://hdl.handle.net/10072/380060.

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Анотація:
The High Frequency Coaxial Transformer (HFCT) has been successfully used in many areas. It has many benefits and advantages compared with other transformer products. Thus, demand for HFCT design and device development is increasing. Conventionally, all the related design procedures for the HFCT rely on the implementation of electromagnetic equations on paper. The device model needs to be manually drawn by an engineer and simulated with software. There is no existing software that can help the engineer to design the device and automatically build the model. On the other hand, the simulation and optimization for the device requires hardware resources, and a personal computer is limited in this regard. Even if the device is developed and the prototype is made, the device still needs to pass EMC testing in order to be labelled. However, many research groups and companies cannot afford to build an EMC lab. A solution is proposed to solve the above issues. The HF transformer design virtual laboratory is developed and tested. It is a computer-based system, which provides the following: 1. Computer software, which can be used to design, model, simulate and optimize a HF transformer device. It is based on computational electromagnetics and numerical geometric techniques. The engineer can use the software to adjust the device structure and obtain a FEM simulation result. 2. A cluster system, which can provide a high performance and high availability computing environment to support the transformer design software. It provides convenient services to the end-user, such as remote access, shared resources, collaborative work and parallel computing. 3. A 3D scanning system, which can pre-test the device before sending it to the EMC lab. It is a much cheaper system compared to building an EMC testing lab. Many case studies have been used to test the design virtual laboratory. The system successfully proves its capability in device design, simulation and testing. By using the system, the engineer can develop a reliable HF transformer device in a short development time period, compared with the conventional HF transformer device design method. Although, an experienced engineer can deliver a well-designed HF transformer as well. The advantage of the integrated HF transformer design laboratory is that, the system is not only provide design function, but also the modelling, simulation, optimization and measurement functions as well. It provides a convenient method to design a HF device from the sketch to the prototype.
Thesis (PhD Doctorate)
Doctor of Philosophy (PhD)
School of Eng & Built Env
Science, Environment, Engineering and Technology
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LI, QUAN, and q. li@cqu edu au. "HIGH FREQUENCY TRANSFORMER LINKED CONVERTERS FOR PHOTOVOLTAIC APPLICATIONS." Central Queensland University. N/A, 2006. http://library-resources.cqu.edu.au./thesis/adt-QCQU/public/adt-QCQU20060830.110106.

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This thesis examines converter topologies suitable for Module Integrated Converters (MICs) in grid interactive photovoltaic (PV) systems, and makes a contribution to the development of the MIC topologies based on the two-inductor boost converter, which has received less research interest than other well known converters. The thesis provides a detailed analysis of the resonant two-inductor boost converter in the MIC implementations with intermediate constant DC links. Under variable frequency control, this converter is able to operate with a variable DC gain while maintaining the resonant condition. A similar study is also provided for the resonant two-inductor boost converter with the voltage clamp, which aims to increase the output voltage range while reducing the switch voltage stress. An operating point with minimized power loss can be also established under the fixed load condition. Both the hard-switched and the soft-switched current fed two-inductor boost converters are developed for the MIC implementations with unfolding stages. Nondissipative snubbers and a resonant transition gate drive circuit are respectively employed in the two converters to minimize the power loss. The simulation study of a frequency-changer-based two-inductor boost converter is also provided. This converter features a small non-polarised capacitor in a second phase output to provide the power balance in single phase inverter applications. Four magnetic integration solutions for the two-inductor boost converter have also been presented and they are promising in reducing the converter size and power loss.
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Книги з теми "High Frequency Planar Transformer"

1

United States. National Aeronautics and Space Administration., ed. Evaluation of a multi-Kw, high frequency transformer for space applications. [Washington, DC]: National Aeronautics and Space Administration, 1994.

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United States. National Aeronautics and Space Administration., ed. Evaluation of a multi-Kw, high frequency transformer for space applications. [Washington, DC]: National Aeronautics and Space Administration, 1994.

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United States. National Aeronautics and Space Administration., ed. Evaluation of a multi-Kw, high frequency transformer for space applications. [Washington, DC]: National Aeronautics and Space Administration, 1994.

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4

Karamat, Asghar. High frequency inverter-transformer-cycloconverter system for DC to AC (3-phase) power conversion. Uxbridge: Brunel University, 1991.

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Evaluation of a multi-Kw, high frequency transformer for space applications. [Washington, DC]: National Aeronautics and Space Administration, 1994.

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Частини книг з теми "High Frequency Planar Transformer"

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Zainal Abidin, M. Firdaus, Mohd Nadzri Mamat, and Mohd Fadzil Bin Ain. "Modelling of High Frequency Coreless Planar Transformer with TWR Hexagonal Winding." In Lecture Notes in Electrical Engineering, 66–71. Singapore: Springer Singapore, 2022. http://dx.doi.org/10.1007/978-981-16-8129-5_11.

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Tamil Selvi, S., P. T. Nandh Kishore, Vishnu Ajith, M. K. Akshaya, and N. Karuppiah. "Design of a High-Frequency Transformer Using Genetic Algorithm." In Lecture Notes in Electrical Engineering, 521–28. Singapore: Springer Singapore, 2022. http://dx.doi.org/10.1007/978-981-16-8484-5_51.

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Arentsen, M. T., C. L. Bak, F. F. da Silva, and S. Lorenzen. "Partial Discharges of High Frequency Transformer for Space Application in Near Vacuum." In Lecture Notes in Electrical Engineering, 3–14. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-31676-1_1.

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Fujimura, Tadahiro, Seiya Masuda, Masahiro Kozako, Masayuki Hikita, Kazuo Iida, Tokihiro Umemura, Yusuke Nakamura, Tetsuo Nakamae, Teruhiko Maeda, and Masakazu Higashiyama. "Partial Discharge Measurement and Its High Frequency Characteristics in Cast Resin Transformer." In Lecture Notes in Electrical Engineering, 653–61. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-31676-1_62.

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Baskaran, K., and G. Indhumathi. "Co-ordination Control of Hybrid AC/DC Micro Grid Using High Frequency Transformer." In Lecture Notes in Electrical Engineering, 25–34. Singapore: Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-16-1299-2_3.

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Kokhanov, Yuriy, Dmitriy Zhirovov, Nikolay Tsygulev, Ekaterina Tutenkova, and Oleg Kaun. "High Frequency Transformer for Wireless Transmission of Energy to the Consumer in Agriculture." In XV International Scientific Conference “INTERAGROMASH 2022”, 461–68. Cham: Springer International Publishing, 2023. http://dx.doi.org/10.1007/978-3-031-21219-2_50.

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Peng, Daixiao, Ming Yang, Wenxia Sima, Jinwei Chu, Zhicheng Xie, and Yonglai Liu. "Duality-Based Potential Transformer Model Including Black-Box Circuit for High-Frequency Transient Simulation." In Lecture Notes in Electrical Engineering, 1244–53. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-31676-1_116.

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Santos, Nelson, J. Fernando Silva, and Vasco Soares. "High-Frequency Transformer Isolated AC-DC Converter for Resilient Low Voltage DC Residential Grids." In IFIP Advances in Information and Communication Technology, 147–55. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-78574-5_14.

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Li, Shaoyi, Renbo Xu, and Fenglian Yuan. "Discussion of Related Issues in the Design of High Frequency Transformer and Its Application." In Advances in Intelligent Systems and Computing, 2112–16. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-25128-4_281.

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Schueller, M., P. Schmitt, U. Kaminskis, R. Christen, and J. Smajic. "Behaviour of Cellulosic Oil Impregnated Insulation Material at High Frequency Stress Used for High Voltage Solid State Transformer Applications." In Lecture Notes in Electrical Engineering, 194–202. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-31680-8_20.

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Тези доповідей конференцій з теми "High Frequency Planar Transformer"

1

Saijun Mao, Jelena Popovic, and Jan Abraham Ferreira. "Planar transformer for high frequency high voltage generation applications." In 2016 IEEE 8th International Power Electronics and Motion Control Conference (IPEMC 2016 - ECCE Asia). IEEE, 2016. http://dx.doi.org/10.1109/ipemc.2016.7512543.

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Lu, Wang, and Gong Chunying. "Detailed design of high-frequency planar power transformer." In 2011 6th IEEE Conference on Industrial Electronics and Applications (ICIEA). IEEE, 2011. http://dx.doi.org/10.1109/iciea.2011.5975848.

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Tria, L. R., D. Zhang, and J. Fletcher. "High-frequency planar transformer parameter estimation using differential evolution." In 2015 IEEE International Magnetics Conference (INTERMAG). IEEE, 2015. http://dx.doi.org/10.1109/intmag.2015.7157293.

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Dumitru, Jean B., Alexandru Morega, Mihaela Morega, and Lucian Pislaru-Danescu. "High frequency miniature planar transformer for energy harvesting applications." In 2016 International Conference and Exposition on Electrical and Power Engineering (EPE). IEEE, 2016. http://dx.doi.org/10.1109/icepe.2016.7781385.

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Ma, Yu, Peipei Meng, Junming Zhang, and Zhaoming Qian. "Detailed losses Analysis of High-Frequency Planar Power Transformer." In 2007 7th International Conference on Power Electronics and Drive Systems. IEEE, 2007. http://dx.doi.org/10.1109/peds.2007.4487734.

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Mukherjee, Satyaki, Branko Majmunovic, Gab-Su Seo, Soham Dutta, Rahul Mallik, Brian Johnson, and Dragan Maksimovic. "A High-Frequency Planar Transformer with Medium-Voltage Isolation." In 2021 IEEE Applied Power Electronics Conference and Exposition (APEC). IEEE, 2021. http://dx.doi.org/10.1109/apec42165.2021.9487061.

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Alam, F., Z. Ullah, A. Majid, J. Saleem, and A. Haider. "Design of high frequency (MHz) planar pot-core transformer." In 2018 1st International Conference on Power, Energy and Smart Grid (ICPESG). IEEE, 2018. http://dx.doi.org/10.1109/icpesg.2018.8384490.

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Poveda-Lerma, A., P. Martinez-La-Osa, E. Rodriguez-Manez, R. Puche-Panadero, and M. Pineda-Sanchez. "Improved Interleaved Layer Distribution for High-Frequency High-Power Planar Transformer." In 2019 19th International Symposium on Electromagnetic Fields in Mechatronics, Electrical and Electronic Engineering (ISEF). IEEE, 2019. http://dx.doi.org/10.1109/isef45929.2019.9097100.

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Wang, Xiaohui, Li Wang, Ling Mao, Lifang Yi, and Shanshui Yang. "Calculation method of winding loss in high frequency planar transformer." In 2016 International Conference on Electrical Systems for Aircraft, Railway, Ship Propulsion and Road Vehicles & International Transportation Electrification Conference (ESARS-ITEC). IEEE, 2016. http://dx.doi.org/10.1109/esars-itec.2016.7841349.

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Wang, Ruxi, Zhiyu Shen, Chi Zhang, Boyi Zhang, and Peter Barbosa. "Planar Structure High-Frequency Transformer Design for Medium Voltage Applications." In 2022 IEEE Energy Conversion Congress and Exposition (ECCE). IEEE, 2022. http://dx.doi.org/10.1109/ecce50734.2022.9947429.

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Звіти організацій з теми "High Frequency Planar Transformer"

1

Yu, D. High Frequency Planar Accelerating Structures for Future Linear Colliders. Office of Scientific and Technical Information (OSTI), January 2005. http://dx.doi.org/10.2172/839665.

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Mazumder, Sudip K. A Modular and Flexible High-Frequency-Link Transformer with a Reduced Device Count and Zero High-Side Devices. Office of Scientific and Technical Information (OSTI), October 2018. http://dx.doi.org/10.2172/1476384.

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