UECO - Ulsan Exhibition Convention center, Ulsan, South Korea
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This page will display details about the program for tutorials and workshops during the conference. The program will become available closer to the conference dates.
For more information on tutorials and workshops, please visit our tutorials and workshops for author page.
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The tutorial/workshop "Electromagnetic Compatibility of Switched-Mode Power Supplies" is subdivided into several sections.
Starting with a brief overview of legal regulations, like CE mark and Declaration of Conformity, a selection of emission and immunity standards is presented. This includes the description of test set-ups, for example for measuring conducted emissions using conventional or STFFT based test receivers and their detector circuits, as well as test parameters, like frequency ranges, based on European and International standards. Than four coupling mechanisms (impedance, capacitive, magnetic and radiated) are discussed, based on components and PCB structures. Subsequently basic countermeasures are proposed and evaluated according meaningful applicability to switched-mode power supplies. The section signals and characteristics explains common-mode and differential-mode interferences as well as the Fourier Transform in detail with a number of waveforms, like rectangular, triangular and trapezoidal waveforms, which are typically for switched-mode power supplies. In particular switching transients are discussed against the background of wide band gap devices like GaN transistors. One large section discusses the origin of electromagnetic interferences referring to the previous sections. This section addresses some widely used circuits, their operating modes, like continuous conduction mode, discontinuous conduction mode and boundary conduction mode, and also parasitics of passive components, using high frequency equivalent circuits of capacitors, inductors and transformers, and parasitics of active components, like junction capacitances and terminal inductances. A large number of examples is presented in form of results of measurements, simulations or calculations.
The second half of the tutorial/workshop deals with EMC design of switched-mode power supplies, also evaluating efficiency and control issues. This section is subdivided into a number of subsections. Firstly the power factor correction is briefly presented. A large subsection addresses EMC filters, which is subdivided into pre filters and post filters. The filter structure is discussed according common-mode and differential-mode attenuation and source and load impedance. Problem solving approaches of the gap between measurements according standards and filter effectiveness are presented. Additionally an outlook to active EMI filters is given. Also design aspects of magnetic components are discussed. Followed by suitable components, which presents for example the impact of start of winding of a magnetic component, suitable circuits with soft-switching principles are compared to hard-switching circuits. After that shielding basics are presented, in particular the impact of holes for cooling purposes on electromagnetic shielding effectiveness. Finally PCB layout structures are evaluated and recommendations are presented. These investigations also address grounding, one of the most discussed topics in PCB design among engineers, as well as component placing and component selection, e. g. based on integrated circuit pin out and return current paths.
Most aspects are explained by measured, simulated or calculated examples. Many examples are discussed against the background of electromagnetic compatibility as well as their impact on efficiency, lifetime and costs of the power supply. The tutorial contains on the one hand practical examples and uses on the other hand the basic physics of Maxwell for a principle understanding. Many principles can be transferred to other electronic circuits.
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Condition monitoring of electric motors has gained an increasing attention in industry over recent years. Its advantages versus the monitoring of other quantities (non-invasive nature, remote monitoring of the motor condition, simplicity, broad fault coverage…) makes it a very interesting option in predictive maintenance programs of industrial electric motors. In this context, over recent years, recent technologies relying on the analysis of different electrical quantities (currents, fluxes) under transient operation of the motor have been proposed. These modern technologies significantly improve the performance of the classical methods and open new paths for the research in the area. This tutorial is intended to explain the foundations of these new technologies based on transient analysis of electrical quantities, emphasizing their advantages versus the classical methods (such as MCSA). Different case stories referred to industrial motors of different typologies in which these new technologies have yielded successful results will be presented. Also, basic tools for the application of transient analysis methods will be explained.
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The wider adoption of electric vehicles (EVs) has propelled the need for efficient, accessible charging solutions. Wireless charging technology stands at the forefront of innovation, promising convenience and flexibility for EV users while addressing the limitations of traditional plug-in charging infrastructure. However, the successful implementation of wireless charging systems for e-mobility requires a comprehensive understanding of key factors such as charging strategies, coil design, and advanced power converters. This tutorial delves into the intricacies of wireless charging technology within the context of electric mobility. Participants will embark on a journey through fundamental principles, innovative strategies, and cutting-edge technologies essential for designing, optimizing, and deploying wireless charging systems for electric vehicles.
Key topics covered include an exploration of wireless power transfer (WPT) principles, ranging from inductive to resonant charging methodologies, along with an investigation of electromagnetic field interference and coupling mechanisms critical for efficient power transmission. Moreover, participants will delve into the diverse spectrum of wireless charging strategies tailored specifically for e-mobility applications, encompassing static versus dynamic charging approaches, integration of wireless infrastructure in roadways and parking areas, and adaptive charging strategies aimed at enhancing efficiency and safety. The tutorial will also provide insights into the intricacies of coil design for wireless charging systems, emphasizing the importance of optimizing transmitter and receiver coils to maximize power transfer efficiency. Through discussions on coil geometry, shielding materials, and several mono and multi-resonant compensation networks, participants will gain practical skills essential for designing robust and efficient wireless charging solutions.
Furthermore, the tutorial will explore advanced power converter topologies tailored for wireless charging applications, encompassing control techniques for regulating power flow, ensuring compatibility, and optimizing efficiency. Participants will also be introduced to integration challenges and solutions, including interoperability, standardization, and case studies highlighting successful implementations and lessons learned. Designed for researchers, engineers, practitioners, and decision-makers engaged in the development of electric vehicle charging infrastructure, this tutorial offers a unique opportunity to deepen understanding, acquire practical skills, and explore emerging trends in the realm of wireless charging for e-mobility. By fostering collaboration and knowledge exchange among participants from academia, industry, government agencies, and regulatory bodies, this tutorial aims to empower stakeholders to drive innovation and accelerate the transition towards sustainable transportation solutions. Further, a detailed discussion on the requirement and implementation of intelligent control technique including the application of digital-twin technology and machine learning for power converters will be discussed.
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The transition to electric vehicles (EVs) is accelerating, fueled by environmental concerns and technological advancements. However, one of the critical challenges in the widespread adoption of EVs is efficient charging infrastructure. On-board charging systems play a pivotal role in addressing this challenge, necessitating the exploration of advanced power factor correction (PFC) converters to enhance their performance. Existing literature in the field highlights various approaches to on-board charging and PFC converter designs. Traditional two-stage battery chargers have been widely used, incorporating converters at the front end for PFC and DC link voltage provision, and at the back end for battery charging. While effective, these designs often suffer from complexity, cost, and efficiency issues.
An interleaved bridgeless buck-boost-based PFC converter, positioned at the front end to improve input current shaping, power factor correction, and DC link voltage provision. Unlike conventional designs, this solution eliminates the need for input current and voltage sensors during AC-DC conversion, enhancing reliability and reducing costs. This onboard charger demonstrates a near unity power factor across a broad input voltage range, making it suitable for a wide range of low-voltage battery chargers. While two-stage topologies have been prevalent in PFC converter designs, they often incur higher costs and increased component count. In contrast, single-stage solutions offer the potential for simplified architectures and reduced losses. A single-stage boost PFC converter with a switchedcapacitor design addresses the limitations of traditional two-stage approaches. It enhances output voltage regulation, reduces switch voltage stress, and simplifies control through self-balanced capacitor voltages. Two-loop control with a small signal and mathematical modeling of the converter ensures accurate control obtained for the control of output and input sensing. With an input voltage range of 90– 270 V AC and adherence to strict input current total harmonic distortion limits, the converter maintains a near-unity power factor at the input, ensuring high power quality. The exploration of advanced PFC converter designs for on-board charging in EVs is crucial for advancing charging infrastructure and accelerating EV adoption. Future research and development in PFC converter technology holds promise for further improvements, paving the way for a sustainable and electrified transportation ecosystem.
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The fusion of Blockchain and Artificial Intelligence (AI) heralds a new era of industrial innovation, offering many opportunities for transparency, efficiency, and autonomy. Blockchain is a decentralized digital ledger that records transactions across a distributed network of computers. It consists of a series of blocks, each containing a list of transactions. Each block is linked to the previous one through a cryptographic hash of the previous block’s content, creating a chain. AI is broadly defined as an umbrella term for various computer applications based on different techniques, which exhibit capabilities commonly and currently associated with human intelligence. This tutorial delves into the synergistic potential of Blockchain and AI, aiming to equip participants with the knowledge and tools to leverage these technologies by providing a comprehensive understanding of Blockchain and AI technologies, their individual capabilities, and how their integration can create robust solutions for industrial challenges. Participants will learn to design, implement, and manage Blockchain-AI integrated systems for energy and manufacturing applications. For instance, grid management and energy trading where Blockchain enables secure, transparent transactions for energy trading, allowing for decentralized energy markets with AI being leveraged to predict energy demand and supply, optimizing grid operations and enabling dynamic pricing models based on real-time data. Also, automated compliance and quality control where smart contracts can automatically enforce agreements based on predefined rules and conditions. AI can monitor production processes in real-time, ensuring compliance with standards and automatically executing contracts when conditions are met. The workshop will conclude with best practices for the design and development of AI Blockchain applications for industrial innovation.
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The development of new devices observing standards ensures their integration and interoperability with other devices in the same ecosystem. The IEEE1451 family of standards comprises a diversity of standards that contribute to transducers' integration in the network. The standard defines two different elements of the network: the Network Capable Processor (NCAP) that connects to the users' network and the Transducers Interface Module (TIM) that implements the smart sensor. A set of Transducers Electronic Data Sheets (TEDS) describe the transducer in the network, allowing an NCAP to discover and associate a transducer to the network automatically. These functionalities respond to today's needs imposed by the Industrial Internet of Things (IIoT) and Cyber-Physical Systems (CPS). The IEEE1451 standard results from a collaboration between the IEEE Instrumentation and Measurement Society and the IEEE Industrial Electronics Society.
The event meets the needs of two groups: Professionals who develop smart transducers, professors, and students from academia. The IEEE 1451 hands-on Lab Workshop offers a theoretical introduction supported by laboratory experimentations. Participants get in touch with the internal structure of a device (TIM) under development, according to the IEEE1451 standard. Device validation tasks will be done to verify compatibility with the IEEE 1451 standard using online tools.
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