博士論文 Doctoral Dissertation 電気自動車の走行中ワイヤレス給電における 制御設計とシステム構築に関する研究 Study on Control Design and System Implementation for In-motion Wireless Charging of Electric Vehicles-------東京大学大学院 工学系研究科 電気系工学専攻 Department of Electrical Engineering, Graduate School of Engineering, The University of Tokyo

 

OVERVIEW

This paper is about wireless power transfer technology that charges electric vehicles while they are running. The system is now stuck with the stationary wireless power supply system, which previously stopped and slowly charged the vehicle. Concerning control design and system construction based on a new perspective that focuses on very different dynamic characteristics. The aim is to establish technology that will The practical application of wireless power transfer technology while driving will accelerate the spread of electric vehicles. It could become a ground-breaking technology that will give a strong boost and bring about a paradigm shift in the current automobile society. This paper In this section, we will discuss the issues required for wireless power transfer technology while driving, and provide clear solutions for these issues. We will present our approach and clarify the effectiveness of these approaches through demonstration experiments. In addition, control design By presenting the knowledge obtained in the form of system construction, we cover a wide range of topics from theory to application. We hope that this paper will make a major contribution to society or be a step toward popularization. The content and structure of this paper are shown below. Chapter 1 deals with the electrification of cars towards a decarbonized society, and discusses current high-performance batteries and Rather than research and development with fast charging as the key technology, we are developing a new vehicle based on motors, capacitors, and wireless technology. Show about Ma society. Here, cars of the future will be powered by highly responsive electric motors rather than engines. Fast charging, using long-life, high-power capacitors instead of lithium-ion batteries. Instead, wireless power supply, which charges slowly while running, plays a major role. wireless power transfer If infrastructure and cars are connected by technology, the cruising range on a single charge, which is tied to battery performance, will lose meaning. The convenience of electric cars will improve dramatically. On the other hand, energy storage devices that require frequent charging and discharging The chair has the advantage of using physical battery capacitors rather than chemical batteries, which have a short lifespan. However, all Since it is difficult to electrify roads, it is not possible to save enough energy to get from the main road to your home. Large capacity capacitors such as electric double layer capacitors are suitable. Finally, the electric motor Advanced motion control realizes safe and eco-friendly driving, and this technology has produced many results in our laboratory. It is proven. Therefore, in order to create this new car society, wireless power transfer technology is essential. It is essential to establish wireless charging while stationary, and what is particularly important here is wireless charging while stationary, which replaces quick charging. This technology is not a wireless power transfer technology that connects a moving vehicle to infrastructure. Na Oh, you can only receive power from one power transmitter for a few seconds to a few tens of seconds at most while driving on a highway. When driving at high speeds, power cannot be received for even a few seconds, so control on the order of milliseconds must be achieved. stomach. The essence of the technology for wireless power transfer while driving is to realize this instantaneous power transfer. It also makes clear that there are many issues that need to be resolved. In this paper, we will address the issues presented in Chapter 1. Each chapter presents a clear approach. ​

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https://repository.dl.itc.u-tokyo.ac.jp/record/2001594/files/A35428.pdf

Mémoire de Master en Electrotechnique Présenté par : TOUHAMI Sarah Asma Intitulé Modélisation des transformateurs : Etude de l’hystérésis et de la saturation magnétique

 

Mémoire de Master en Electrotechnique Présenté par : TOUHAMI Sarah Asma 

Intitulé Modélisation des transformateurs : Etude de l’hystérésis et de la saturation magnétique Président du jury : S. MEKHTOUB Professeur Ecole Nationale Polytechnique

 Examinateurs : A.BOUBAKEUR Professeur Ecole Nationale Polytechnique

 H.SAHRAOUI Maitre de conférences Ecole Nationale Polytechnique 

 Abstract— The objectif of this work is the modeling and analysis of transformers. In this study the hysteresis, the saturation and the modeling have been widely discussed. Experimental tests and numerical simulations on models adjusted Software EMTP (Electromagnetic Transients Program) were conducted and the comparison of obtained results confirmed the validity of what we have made as a correction of this software specially designed for large electrical networks.

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https://repository.enp.edu.dz/jspui/bitstream/123456789/7211/1/TOUHAMI.Sarah%20Asma.pdf

Méthodologies de Conception de Transformateurs Moyenne Fréquence pour application aux réseaux haute tension et réseaux ferroviaires Alexis Fouineau--THESE de DOCTORAT DE L’UNIVERSITE DE LYON opérée au sein de l’Université Claude Bernard Lyon 1 Ecole Doctorale N° 160 ECOLE DOCTORALE ELECTRONIQUE, ELECTROTECHNIQUE, AUTOMATIQUE DE LYON Spécialité de doctorat : Génie Électrique Soutenue publiquement le 13/11/2019, par : Alexis FOUINEAU

 

Méthodologies de Conception de Transformateurs Moyenne Fréquence pour application aux réseaux haute tension et réseaux ferroviaires

THESE de DOCTORAT DE L’UNIVERSITE DE LYON opérée au sein de l’Université Claude Bernard Lyon 1 Ecole Doctorale N° 160 ECOLE DOCTORALE ELECTRONIQUE, ELECTROTECHNIQUE, AUTOMATIQUE DE LYON Spécialité de doctorat : Génie Électrique Soutenue publiquement le 13/11/2019, par : Alexis FOUINEAU opérée au sein de l’Université Claude Bernard Lyon 1 Ecole Doctorale N° 160 

ECOLE DOCTORALE ELECTRONIQUE, ELECTROTECHNIQUE, AUTOMATIQUE DE LYON

Spécialité de doctorat : Génie Électrique Soutenue publiquement le 13/11/2019, 

par : Alexis FOUINEAU

Abstract

 Medium Frequency Transformers (MFT) are an innovative technology compared to low frequency transformers, with the promise of reduced volume and increased efficiency. This PhD thesis focuses in particular on their design for high voltage, high power applications, such as high voltage and medium voltage DC networks, as well as railway networks. In these applications, MFTs are used in converters that can generate specific constraints to be taken into account during their design: non-sinusoidal signals, polarization voltage, target inductance values. Moreover, the technological choices currently available for the realization of MFTs are numerous, and there is currently no consensus on any technology for any given application. Trends could be identified using a tool to classify MFT designs from the literature. Thus, the most promising technologies were selected and retained for the future. Based on these technologies, a design methodology was developed to quickly and semi-automatically design and compare MFTs with different technological choices. It consists of three steps: pre-design, analytical design, and validation. The complete analytical design of the MFT with different technological choices is carried out using an automated design tool developed during this thesis, named SUITED (SUpergrid Institute TransformEr Design). This methodology requires models and data for each of the components and phenomena of the MFT. Concerning the magnetic core, a review and selection of models from the literature were carried out for the evaluation of the magnetizing inductance and magnetic losses. In addition, magnetic characterizations have made it possible to highlight the impact of certain technological processes on the levels of loss of magnetic cores made of nanocrystalline material, which is an excellent candidate for MFTs. Concerning the windings, analytical models to calculate the magnetic field, leakage inductance and skin and proximity effects were developed and compared with those in the literature and simulations. These models are proving to be more accurate on the MFT geometries considered. On top of that, a new method for evaluating the parasitic capacitances of windings with rectangular turns has been successfully implemented and validated. Thermal networks have been identified for the different MFT geometries. The thermal resistances of conduction, convection and radiation are calculated from detailed models. In particular, the anisotropy of materials is taken into account for thermal conduction, and the convection coefficients are evaluated via different correlations for each face of the MFT. The thermal networks are then solved iteratively and analytically to take into account the non-linearity of the thermal resistances while optimizing the required computation time. Finally, this entire design methodology was applied to three case studies corresponding to the target applications: high voltage, medium voltage and rail. The results obtained do show the performance and necessity of this approach.

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Medium Frequency Transformer Leakage Inductance Modeling and Experimental Verification M. Mogorovic and D. Dujic--POWER ELECTRONICS LABORATORY ÉCOLE POLYTECHNIQUE FÉDÉRALE DE LAUSANNE--

2017 IEEE Energy Conversion Congress and Exposition (ECCE) 

Medium Frequency Transformer Leakage Inductance Modeling and Experimental Verification 

M. Mogorovic and D. Dujic 

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 Abstract—This paper provides detailed analytical modeling and finite elements method (FEM) analysis of the medium frequency transformer (MFT) leakage inductance, as one of the key design factors governing the operation of galvanically isolated power electronics converters. Precise leakage inductance modeling in design stage is especially important for converter topologies based on resonant conversion where MFT is a part of a resonant circuit. A comprehensive analytical model that takes into account both the geometric and frequency effects on the given MFT leakage inductance is generated based on the transformer physical structure, thus allowing for optimization of the MFT design with targeted equivalent circuit leakage inductance reference. The derived models are benchmarked to the measurement results on the developed MFT prototype.

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https://core.ac.uk/download/pdf/148033232.pdf

State Of Art survey for design of Medium Frequency High Power Transformer Sriram Vaisambhayana1 , Catalin Dincan2 , Cao Shuyu1 , Anshuman Tripathi1 , Tian Haonan1 , Karthikeya BR1 Energy Research Institute @ NTU Singapore1 Aalborg University Denmark

AA

Abstract

 Medium and high frequency, high power transformers play an important role in footprint reduction along with their functions of galvanic isolation, and voltage transformation in all high power converters typically used in traction power systems, offshore wind plant power converters, and solid state transformer based distribution system grids. This state of art report analysis the various materials and design tradeoffs that govern the electromagnetic behavior and loss mechanisms of the medium frequency transformer applications. Typical winding and core geometries that have been reported extensively in the literature are described, and some design procedures and flow charts are analyzed including specific optimization routines. Estimation of core loss at high frequency using Steinmetz method and other modified methods are shown in detail. Thermal modelling including static and dynamic methods available in literature are put forward with references to thermal management methods. FEM analysis for electromagnetic behavior is described and couple of commercially available tools and their limitations are analyzed. Different challenges of relevance are included in different sections and brief comparisons are drawn. Design tools which are available is given a preview and limitations are drawn. A comprehensive literature survey was done and included in the paper in the reference section