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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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• Reference Manager
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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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The electrical demands in several countries around the world are increasing due to the huge energy requirements of prosperous economies and the human activities of modern life. In order to economically transfer electrical powers from the generation side to the demand side, these powers need to be transferred at high-voltage levels through suitable transmission systems and power substations. To this end, high-voltage transmission systems and power substations are in demand. Actually, they are at the heart of interconnected power systems, in which any faults might lead to unsuitable consequences, abnormal operation situations, security issues, and even power cuts and blackouts. In order to cope with the ever-increasing operation and control complexity and security in interconnected high-voltage power systems, new architectures, concepts, algorithms, and procedures are essential. This book aims to encourage researchers to address the technical issues and research gaps in high-voltage transmission systems and power substations in modern energy systems.

Technology: general issues --- VFTO suppression --- GIS --- high-frequency inductance calculation --- damping busbar --- dynamic state estimation (DSE) --- synchronous machine --- ensemble square root filter (EnSRF) --- Sage–Husa algorithm --- grounding grid --- magnetic field --- orientation --- transient electromagnetic method (TEM) --- traction power-supply system --- protective relay --- digital simulator --- monitoring and controlling system --- railway --- transformer --- transmission line --- discrete wavelet transform --- mother wavelet --- fault classification --- multiprocessor system --- online non-clairvoyant scheduling --- weighted flow time --- potential analysis --- energy efficiency --- modular multilevel converter --- STATCOM --- optimization --- harmonics --- Harris Hawk’s optimization --- Atom search optimization --- laser-induced breakdown spectroscopy --- contamination --- insulators --- salt --- calibration curves --- PV water pumping --- high gain DC-DC converter --- modified LUO converter --- hybrid MPPT algorithm --- grey wolf optimizer --- cyber-physical security --- microgrid --- cyber-attacks --- n/a --- Sage-Husa algorithm --- Harris Hawk's optimization

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The electrical demands in several countries around the world are increasing due to the huge energy requirements of prosperous economies and the human activities of modern life. In order to economically transfer electrical powers from the generation side to the demand side, these powers need to be transferred at high-voltage levels through suitable transmission systems and power substations. To this end, high-voltage transmission systems and power substations are in demand. Actually, they are at the heart of interconnected power systems, in which any faults might lead to unsuitable consequences, abnormal operation situations, security issues, and even power cuts and blackouts. In order to cope with the ever-increasing operation and control complexity and security in interconnected high-voltage power systems, new architectures, concepts, algorithms, and procedures are essential. This book aims to encourage researchers to address the technical issues and research gaps in high-voltage transmission systems and power substations in modern energy systems.

VFTO suppression --- GIS --- high-frequency inductance calculation --- damping busbar --- dynamic state estimation (DSE) --- synchronous machine --- ensemble square root filter (EnSRF) --- Sage–Husa algorithm --- grounding grid --- magnetic field --- orientation --- transient electromagnetic method (TEM) --- traction power-supply system --- protective relay --- digital simulator --- monitoring and controlling system --- railway --- transformer --- transmission line --- discrete wavelet transform --- mother wavelet --- fault classification --- multiprocessor system --- online non-clairvoyant scheduling --- weighted flow time --- potential analysis --- energy efficiency --- modular multilevel converter --- STATCOM --- optimization --- harmonics --- Harris Hawk’s optimization --- Atom search optimization --- laser-induced breakdown spectroscopy --- contamination --- insulators --- salt --- calibration curves --- PV water pumping --- high gain DC-DC converter --- modified LUO converter --- hybrid MPPT algorithm --- grey wolf optimizer --- cyber-physical security --- microgrid --- cyber-attacks --- n/a --- Sage-Husa algorithm --- Harris Hawk's optimization

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Today, there is a great deal of attention focused on sustainable growth worldwide. The increase in efficiency in the use of energy may even, in this historical moment, bring greater benefit than the use of renewable energies. Electricity appears to be the most sustainable of energies and the most promising hope for a planet capable of growing without compromising its own health and that of its inhabitants. Power electronics and electrical drives are the key technologies that will allow energy savings through the reduction of energy losses in many applications. This Special Issue has collected several scientific contributions related to energy efficiency in electrical equipment. Some articles are dedicated to the use and optimization of permanent magnet motors, which allow obtaining the highest level of efficiency. Most of the contributions describe the energy improvements that can be achieved with power electronics and the use of suitable control techniques. Last but not least, some articles describe interesting solutions for hybrid vehicles, which were created mainly to save energy in the smartest way possible.

History of engineering & technology --- LLC resonant converter --- resonant transformer --- fringing effect --- adjustable magnetizing inductance --- efficiency --- optimal design --- oil pump --- brushless DC --- motor --- robust --- vehicles --- eddy current coupling --- hybrid excited --- magnetic equivalent circuit --- magnetic field analysis --- torque-slip characteristic --- switched inductor capacitor converter --- a power converter --- energy transfer media --- ripple voltage --- conduction loss --- Hybrid Electric Vehicle (HEV) --- series architecture --- supercapacitor --- Energy Management System (EMS) --- storage sizing --- energy efficiency --- backlight --- DC-DC converter --- passive snubber --- voltage stress --- maximum-torque-per-ampere (MTPA) --- torque control --- per unit --- IPMSM --- SiC devices --- Si devices --- three level NPC inverter --- three level T-NPC inverter --- two level SiC MOSFET inverter --- overvoltages --- heat sink volume --- motor emulator --- power loss --- current tracking --- finite set model predictive control --- medium frequency transformer --- power electronic transformer --- Solid State Transformer (SST) --- railway electric traction --- Modular Multilevel Converter (MMC) --- soft-switching --- DC–DC converter --- multi-input converter --- battery --- hybrid electric vehicle (HEV), efficiency --- permanent magnet motor --- synchronous motor --- brushless drive --- industrial application --- turbocompound --- turbocharger --- hybrid electric vehicle (HEV) --- fuel economy --- LLC resonant converter --- resonant transformer --- fringing effect --- adjustable magnetizing inductance --- efficiency --- optimal design --- oil pump --- brushless DC --- motor --- robust --- vehicles --- eddy current coupling --- hybrid excited --- magnetic equivalent circuit --- magnetic field analysis --- torque-slip characteristic --- switched inductor capacitor converter --- a power converter --- energy transfer media --- ripple voltage --- conduction loss --- Hybrid Electric Vehicle (HEV) --- series architecture --- supercapacitor --- Energy Management System (EMS) --- storage sizing --- energy efficiency --- backlight --- DC-DC converter --- passive snubber --- voltage stress --- maximum-torque-per-ampere (MTPA) --- torque control --- per unit --- IPMSM --- SiC devices --- Si devices --- three level NPC inverter --- three level T-NPC inverter --- two level SiC MOSFET inverter --- overvoltages --- heat sink volume --- motor emulator --- power loss --- current tracking --- finite set model predictive control --- medium frequency transformer --- power electronic transformer --- Solid State Transformer (SST) --- railway electric traction --- Modular Multilevel Converter (MMC) --- soft-switching --- DC–DC converter --- multi-input converter --- battery --- hybrid electric vehicle (HEV), efficiency --- permanent magnet motor --- synchronous motor --- brushless drive --- industrial application --- turbocompound --- turbocharger --- hybrid electric vehicle (HEV) --- fuel economy