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CE+T Power is a Belgian company and a leading producer of modular inverters and modular UPS. Founded in 1934, CE+T Power has been specializing in power electronics since the 1960's and they invented the modular inverter in the end of the 1980’s. They provide power solutions to enterprises to secure their critical applications against power failures. Therefore, CE+T is always progressing in the field of power electronics by offering the best modular inverters. A DC/DC converter is a building block of an inverter. So, a high-performance DC/DC converter is necessary for their products. The main objective of this work is two-fold. The first objective is to study a DC/DC converter topology known as Multi Resonant Interleaved Boost Converter and to evaluate its performance and behaviour. The second objective is to utilize the knowledge gained and implement it to optimize a prototype of DC/DC converter called as `CE+T E-Once 350VA DC/DC Converter'. First the `CE+T E-Once 350VA DC/DC Converter' is tested and its various characteristics such as ripple current, ZCS behaviour of active switches, voltage gain and stability are evaluated. Then the potential improvements are identified. To achieve the improvements, a list of required hardware and software changes is established. The modifications are introduced in the circuit, one at a time and various tests are carried out to validate the modifications introduced. Once, all the necessary changes are done, the new version of the converter is called `Optimized Multi Resonant Interleaved Boost Converter'. In comparison to the `CE+T E-Once 350VA DC/DC Converter', the `Optimized Multi Resonant Interleaved Boost Converter' has lower input ripple current, lower voltage stress across the MOSFET switches, lower current peaks in the MOSFET's drain current and lower energy circulating in the resonant tank; all of which led to reduced losses and better efficiency. This project consisted of theoretical research as well as hands-on experience with DC/DC converters. Various concepts such as zero-current switching and resonant converters were studied and implemented in practical.
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Power converters are widely used over the world and are implemented in several electronic applications. This thesis was realised in partnership with CE+T POWER, one of the leaders on the power management market. The principal goal of this project was to revise their current DC/DC converter implemented inside one of their main products, the ``Sierra 10". To do so, the idea of replacing MOSFET by new GaN transistors was investigated. First, the converter operations were studied and successfully checked on LTspice simulations. The wide bandgap semiconductors technology was summarised and it was shown that there were several advantages of using GaN instead of silicon transistors. GaN transistors are easy to use, allow new capabilities, are reliable, and will be at least as cost-effective as the silicon within few years. Then, it was shown that the transistors of the converter were controllable by sensing the magnetising current. In practice, the drain current of the primary transistor is almost an image of the magnetising current (without considering the resonance part of the drain current). The drain current would be sensed. It was possible to fix the needed output power to compute the corresponding peak magnetising current values and switching frequency to impose. At first glance, there were several operating points for a given output power. However, it was shown, under assumptions, that an operating point which induces the lowest power losses inside the primary transistor existed. This could be translated into a simple optimisation problem. The mathematical programming results corresponded to the analytical results. The model suggested to decrease the switching frequency around 30 kHz for a peak magnetising current of 81 A. This operating point might not be the most practical one in terms of transformer sizing and cost. Supplementary manufacturing constraints could be added to the model to shift the minimum losses operating point. The obtained results showed that a possible minimum losses operating point exists and could be tracked under a simple model of losses computation that could be sharpened in function of the technical constraints.
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Nowadays, power electronics is an enabling technology in the energy development scenario. Furthermore, power electronics is strictly linked with several fields of technological growth, such as consumer electronics, IT and communications, electrical networks, utilities, industrial drives and robotics, and transportation and automotive sectors. Moreover, the widespread use of power electronics enables cost savings and minimization of losses in several technology applications required for sustainable economic growth. The topologies of DC–DC power converters and switching converters are under continuous development and deserve special attention to highlight the advantages and disadvantages for use increasingly oriented towards green and sustainable development. DC–DC converter topologies are developed in consideration of higher efficiency, reliable control switching strategies, and fault-tolerant configurations. Several types of switching converter topologies are involved in isolated DC–DC converter and nonisolated DC–DC converter solutions operating in hard-switching and soft-switching conditions. Switching converters have applications in a broad range of areas in both low and high power densities. The articles presented in the Special Issue titled "Advanced DC-DC Power Converters and Switching Converters" consolidate the work on the investigation of the switching converter topology considering the technological advances offered by innovative wide-bandgap devices and performance optimization methods in control strategies used.
History of engineering & technology --- interleaved operation --- three-winding coupled inductor --- high step-up DC–DC converter --- DC/DC converter --- multi-input-port --- bidirectional --- energy storage --- three-phase bidirectional isolated DC-DC converter --- burst-mode switching --- high-frequency transformer configurations --- phase-shift modulation --- intermittent switching --- three-phase dual-active bridge --- bidirectional converter --- high efficiency --- GaN --- SiC --- buck-boost converter --- high switching frequency --- electric vehicle (EV) --- fast charging --- interleaved dc–dc converter --- SiC devices --- Si devices --- Component Connection Method --- power electronics-based systems --- stability analysis --- state-space methods --- virtual synchronous generators --- DC-DC converters --- photovoltaics --- single-diode model --- state-space --- multi-port dual-active bridge (DAB) converter --- wide-band-gap (WBG) semiconductors --- silicon carbide (SiC) MOSFETs --- power converter --- automotive --- battery charger --- circuit modelling --- power electronics --- SiC MOSFET --- interleaved operation --- three-winding coupled inductor --- high step-up DC–DC converter --- DC/DC converter --- multi-input-port --- bidirectional --- energy storage --- three-phase bidirectional isolated DC-DC converter --- burst-mode switching --- high-frequency transformer configurations --- phase-shift modulation --- intermittent switching --- three-phase dual-active bridge --- bidirectional converter --- high efficiency --- GaN --- SiC --- buck-boost converter --- high switching frequency --- electric vehicle (EV) --- fast charging --- interleaved dc–dc converter --- SiC devices --- Si devices --- Component Connection Method --- power electronics-based systems --- stability analysis --- state-space methods --- virtual synchronous generators --- DC-DC converters --- photovoltaics --- single-diode model --- state-space --- multi-port dual-active bridge (DAB) converter --- wide-band-gap (WBG) semiconductors --- silicon carbide (SiC) MOSFETs --- power converter --- automotive --- battery charger --- circuit modelling --- power electronics --- SiC MOSFET
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Nowadays, power electronics is an enabling technology in the energy development scenario. Furthermore, power electronics is strictly linked with several fields of technological growth, such as consumer electronics, IT and communications, electrical networks, utilities, industrial drives and robotics, and transportation and automotive sectors. Moreover, the widespread use of power electronics enables cost savings and minimization of losses in several technology applications required for sustainable economic growth. The topologies of DC–DC power converters and switching converters are under continuous development and deserve special attention to highlight the advantages and disadvantages for use increasingly oriented towards green and sustainable development. DC–DC converter topologies are developed in consideration of higher efficiency, reliable control switching strategies, and fault-tolerant configurations. Several types of switching converter topologies are involved in isolated DC–DC converter and nonisolated DC–DC converter solutions operating in hard-switching and soft-switching conditions. Switching converters have applications in a broad range of areas in both low and high power densities. The articles presented in the Special Issue titled "Advanced DC-DC Power Converters and Switching Converters" consolidate the work on the investigation of the switching converter topology considering the technological advances offered by innovative wide-bandgap devices and performance optimization methods in control strategies used.
History of engineering & technology --- interleaved operation --- three-winding coupled inductor --- high step-up DC–DC converter --- DC/DC converter --- multi-input-port --- bidirectional --- energy storage --- three-phase bidirectional isolated DC-DC converter --- burst-mode switching --- high-frequency transformer configurations --- phase-shift modulation --- intermittent switching --- three-phase dual-active bridge --- bidirectional converter --- high efficiency --- GaN --- SiC --- buck-boost converter --- high switching frequency --- electric vehicle (EV) --- fast charging --- interleaved dc–dc converter --- SiC devices --- Si devices --- Component Connection Method --- power electronics-based systems --- stability analysis --- state-space methods --- virtual synchronous generators --- DC-DC converters --- photovoltaics --- single-diode model --- state-space --- multi-port dual-active bridge (DAB) converter --- wide-band-gap (WBG) semiconductors --- silicon carbide (SiC) MOSFETs --- power converter --- automotive --- battery charger --- circuit modelling --- power electronics --- SiC MOSFET
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Nowadays, power electronics is an enabling technology in the energy development scenario. Furthermore, power electronics is strictly linked with several fields of technological growth, such as consumer electronics, IT and communications, electrical networks, utilities, industrial drives and robotics, and transportation and automotive sectors. Moreover, the widespread use of power electronics enables cost savings and minimization of losses in several technology applications required for sustainable economic growth. The topologies of DC–DC power converters and switching converters are under continuous development and deserve special attention to highlight the advantages and disadvantages for use increasingly oriented towards green and sustainable development. DC–DC converter topologies are developed in consideration of higher efficiency, reliable control switching strategies, and fault-tolerant configurations. Several types of switching converter topologies are involved in isolated DC–DC converter and nonisolated DC–DC converter solutions operating in hard-switching and soft-switching conditions. Switching converters have applications in a broad range of areas in both low and high power densities. The articles presented in the Special Issue titled "Advanced DC-DC Power Converters and Switching Converters" consolidate the work on the investigation of the switching converter topology considering the technological advances offered by innovative wide-bandgap devices and performance optimization methods in control strategies used.
interleaved operation --- three-winding coupled inductor --- high step-up DC–DC converter --- DC/DC converter --- multi-input-port --- bidirectional --- energy storage --- three-phase bidirectional isolated DC-DC converter --- burst-mode switching --- high-frequency transformer configurations --- phase-shift modulation --- intermittent switching --- three-phase dual-active bridge --- bidirectional converter --- high efficiency --- GaN --- SiC --- buck-boost converter --- high switching frequency --- electric vehicle (EV) --- fast charging --- interleaved dc–dc converter --- SiC devices --- Si devices --- Component Connection Method --- power electronics-based systems --- stability analysis --- state-space methods --- virtual synchronous generators --- DC-DC converters --- photovoltaics --- single-diode model --- state-space --- multi-port dual-active bridge (DAB) converter --- wide-band-gap (WBG) semiconductors --- silicon carbide (SiC) MOSFETs --- power converter --- automotive --- battery charger --- circuit modelling --- power electronics --- SiC MOSFET
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In this book, nine papers focusing on different fields of power electronics are gathered, all of which are in line with the present trends in research and industry. Given the generality of the Special Issue, the covered topics range from electrothermal models and losses models in semiconductors and magnetics to converters used in high-power applications. In this last case, the papers address specific problems such as the distortion due to zero-current detection or fault investigation using the fast Fourier transform, all being focused on analyzing the topologies of high-power high-density applications, such as the dual active bridge or the H-bridge multilevel inverter. All the papers provide enough insight in the analyzed issues to be used as the starting point of any research. Experimental or simulation results are presented to validate and help with the understanding of the proposed ideas. To summarize, this book will help the reader to solve specific problems in industrial equipment or to increase their knowledge in specific fields.
soft-switching --- Superjunction MOSFET --- LLC resonant converter --- zero voltage switching --- COSS hysteresis --- COSS intrinsic energy losses --- SiC devices --- antiparallel diode --- dual active bridge --- power electronic transformer --- high-frequency transformer --- Artificial Neural Networks (ANN) --- fault diagnosis --- Fast Fourier Transform (FFT) --- Multilevel Inverter (MLI) --- LabVIEW --- magnetics modeling --- variable inductor --- hysteresis --- eddy currents --- saturable core --- AC/AC conversion --- decoupling control --- modulation --- DC–DC converter --- phase shift PWM --- ZVS --- inrush current --- MOSFET --- telecom server --- modular multilevel converter (MMC) --- total harmonic distortion (THD) --- universal mathematical model (UMM) --- switching state --- nearest level modulation (NLM) --- DC-DC converter --- IGBT --- averaged model --- electrothermal model --- SPICE --- power electronics --- converter control --- power factor correction --- total harmonic distortion --- flyback --- solid-state lighting
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The book continues with an experimental analysis conducted to obtain accurate and complete information about electric vehicles in different traffic situations and road conditions. For the experimental analysis in this study, three different electric vehicles from the Edinburgh College leasing program were equipped and tracked to obtain over 50 GPS and energy consumption data for short distance journeys in the Edinburgh area and long-range tests between Edinburgh and Bristol. In the following section, an adaptive and robust square root cubature Kalman filter based on variational Bayesian approximation and Huber’s M-estimation is proposed to accurately estimate state of charge (SOC), which is vital for safe operation and efficient management of lithium-ion batteries. A coupled-inductor DC-DC converter with a high voltage gain is proposed in the following section to match the voltage of a fuel cell stack to a DC link bus. Finally, the book presents a review of the different approaches that have been proposed by various authors to mitigate the impact of electric buses and electric taxis on the future smart grid.
adaptive --- electric vehicle --- state of charge (SOC) --- high voltage gain --- lithium-ion battery --- climate change --- ssustainable transport --- driving cycle --- smart grid --- robust --- battery powered vehicle --- Huber’s M-estimation --- electric taxi --- public transportation --- sustainable development --- DC-DC converter --- square root cubature Kalman filter (SRCKF) --- coupled inductor --- fuel cell vehicles --- charging approaches --- ripple minimization current --- variational Bayesian approximation --- electric propulsion --- electric bus
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In this book, nine papers focusing on different fields of power electronics are gathered, all of which are in line with the present trends in research and industry. Given the generality of the Special Issue, the covered topics range from electrothermal models and losses models in semiconductors and magnetics to converters used in high-power applications. In this last case, the papers address specific problems such as the distortion due to zero-current detection or fault investigation using the fast Fourier transform, all being focused on analyzing the topologies of high-power high-density applications, such as the dual active bridge or the H-bridge multilevel inverter. All the papers provide enough insight in the analyzed issues to be used as the starting point of any research. Experimental or simulation results are presented to validate and help with the understanding of the proposed ideas. To summarize, this book will help the reader to solve specific problems in industrial equipment or to increase their knowledge in specific fields.
Technology: general issues --- soft-switching --- Superjunction MOSFET --- LLC resonant converter --- zero voltage switching --- COSS hysteresis --- COSS intrinsic energy losses --- SiC devices --- antiparallel diode --- dual active bridge --- power electronic transformer --- high-frequency transformer --- Artificial Neural Networks (ANN) --- fault diagnosis --- Fast Fourier Transform (FFT) --- Multilevel Inverter (MLI) --- LabVIEW --- magnetics modeling --- variable inductor --- hysteresis --- eddy currents --- saturable core --- AC/AC conversion --- decoupling control --- modulation --- DC–DC converter --- phase shift PWM --- ZVS --- inrush current --- MOSFET --- telecom server --- modular multilevel converter (MMC) --- total harmonic distortion (THD) --- universal mathematical model (UMM) --- switching state --- nearest level modulation (NLM) --- DC-DC converter --- IGBT --- averaged model --- electrothermal model --- SPICE --- power electronics --- converter control --- power factor correction --- total harmonic distortion --- flyback --- solid-state lighting --- soft-switching --- Superjunction MOSFET --- LLC resonant converter --- zero voltage switching --- COSS hysteresis --- COSS intrinsic energy losses --- SiC devices --- antiparallel diode --- dual active bridge --- power electronic transformer --- high-frequency transformer --- Artificial Neural Networks (ANN) --- fault diagnosis --- Fast Fourier Transform (FFT) --- Multilevel Inverter (MLI) --- LabVIEW --- magnetics modeling --- variable inductor --- hysteresis --- eddy currents --- saturable core --- AC/AC conversion --- decoupling control --- modulation --- DC–DC converter --- phase shift PWM --- ZVS --- inrush current --- MOSFET --- telecom server --- modular multilevel converter (MMC) --- total harmonic distortion (THD) --- universal mathematical model (UMM) --- switching state --- nearest level modulation (NLM) --- DC-DC converter --- IGBT --- averaged model --- electrothermal model --- SPICE --- power electronics --- converter control --- power factor correction --- total harmonic distortion --- flyback --- solid-state lighting
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This book focuses on the applications of Power Electronics Converters in smart grids and renewable energy systems. The topics covered include methods to CO2 emission control, schemes for electric vehicle charging, reliable renewable energy forecasting methods, and various power electronics converters. The converters include the quasi neutral point clamped inverter, MPPT algorithms, the bidirectional DC-DC converter, and the push–pull converter with a fuzzy logic controller.
Technology: general issues --- History of engineering & technology --- Environmental science, engineering & technology --- allied in-situ injection and production (AIIP) --- CO2 huff and puff --- shale oil reservoirs --- enhanced oil recovery --- renewable energy sources --- forecasting --- Weibull distribution --- neural networks --- optimal economic dispatch --- particle swarm optimization --- distribution network (DN) --- doubly-fed induction generator (DFIG) --- feeder automation (FA) --- compatibility --- adaptive control strategy (ACS) --- coordination technology --- air-cooled condenser --- mechanical draft wet-cooling towers --- hot recirculation rate --- complex building environment --- numerical simulation --- Neutral Point Clamped Z-Source Inverter (NPCZSI) --- shoot-through duty ratio --- modulation index --- voltage gain --- power quality --- dynamic modeling --- DC-DC converter --- electric vehicle (EV) --- charge pump capacitor --- fuzzy logic control --- maximum power point tracking --- photovoltaic --- push pull converter --- off-grid voltage source inverter --- medium voltage distribution network --- switch station --- electric vehicle --- DC–DC converter --- reconfiguration --- orderly charging --- grey wolf optimizer --- electrical harmonics --- harmonic estimation --- total harmonic distortion --- battery energy storage system --- third-harmonic current injection --- high efficiency --- active damping
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In this book, nine papers focusing on different fields of power electronics are gathered, all of which are in line with the present trends in research and industry. Given the generality of the Special Issue, the covered topics range from electrothermal models and losses models in semiconductors and magnetics to converters used in high-power applications. In this last case, the papers address specific problems such as the distortion due to zero-current detection or fault investigation using the fast Fourier transform, all being focused on analyzing the topologies of high-power high-density applications, such as the dual active bridge or the H-bridge multilevel inverter. All the papers provide enough insight in the analyzed issues to be used as the starting point of any research. Experimental or simulation results are presented to validate and help with the understanding of the proposed ideas. To summarize, this book will help the reader to solve specific problems in industrial equipment or to increase their knowledge in specific fields.
Technology: general issues --- soft-switching --- Superjunction MOSFET --- LLC resonant converter --- zero voltage switching --- COSS hysteresis --- COSS intrinsic energy losses --- SiC devices --- antiparallel diode --- dual active bridge --- power electronic transformer --- high-frequency transformer --- Artificial Neural Networks (ANN) --- fault diagnosis --- Fast Fourier Transform (FFT) --- Multilevel Inverter (MLI) --- LabVIEW --- magnetics modeling --- variable inductor --- hysteresis --- eddy currents --- saturable core --- AC/AC conversion --- decoupling control --- modulation --- DC–DC converter --- phase shift PWM --- ZVS --- inrush current --- MOSFET --- telecom server --- modular multilevel converter (MMC) --- total harmonic distortion (THD) --- universal mathematical model (UMM) --- switching state --- nearest level modulation (NLM) --- DC-DC converter --- IGBT --- averaged model --- electrothermal model --- SPICE --- power electronics --- converter control --- power factor correction --- total harmonic distortion --- flyback --- solid-state lighting
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