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This book comprises ten articles covering different aspects of power quality issues in microgrids and distributed generation (DG) systems, including 1) Detection and estimation of power quality; 2) Modeling; 3) Harmonic control for DG systems and microgrids; 4) Stability improvements for microgrids. Different power quality phenomena and solution were studied in the included papers, such as harmonics, resonance, frequency deviation, voltage sag, and fluctuation. From a network point of view, some papers studied the harmonic and stability issues in standalone microgrids which are more likely to cause power quality problems. Other papers discussed the power quality problems in microgrids which are weakly interconnected with the main distribution grid. In view of the published papers, there is a trend that increasingly advanced modeling, analysis, and control schemes were applied in the studies. Moreover, the latest works focus not only on single-unit problems but also multiple units or network issues. Although some of the hot topics are not included, this book covers multiple aspects of the current power quality research frontier, and represents a particularly useful reference book for frontier researchers in this field.

power quality improvement --- differential feedforward --- weak grid --- data testing --- distributed generations --- voltage-source converter --- dynamic frequency support --- coordinated control --- grid-connection/island switching process --- virtual damping --- PV generation --- virtual inertia --- autonomous microgrid --- optimal virtual resistor --- multi-inverter system --- standalone microgrid --- unscented Kalman filter --- HVDC --- voltage fluctuation --- solar photovoltaic system --- nonlinear dynamic system --- state estimation --- voltage stability --- diesel generator --- voltage control --- multi-time scale --- sliding mode control --- power system simulation --- stability analysis --- grid impedance --- modeling method --- shunt inverter --- voltage compensation --- 2nd-order lowpass filter --- virtual synchronous generator --- microgrid --- output impedance --- hybrid energy storage --- grid-connected inverter --- parameter identification --- wind farm --- frequency stability --- harmonic suppression --- current source mode (CSM) --- voltage source mode (VSM) --- stand-alone microgrid --- frequency control --- vector control --- power quality control --- grid-tied inverter --- submarine cables --- line commutated converter --- reference current compensation --- power quality --- series inverter --- impedance enhancement

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In recent years, power converters have played an important role in power electronics technology for different applications, such as renewable energy systems, electric vehicles, pulsed power generation, and biomedical sciences. Power converters, in the realm of power electronics, are becoming essential for generating electrical power energy in various ways. This Special Issue focuses on the development of novel power converter topologies in power electronics. The topics of interest include, but are not limited to: Z-source converters; multilevel power converter topologies; switched-capacitor-based power converters; power converters for battery management systems; power converters in wireless power transfer techniques; the reliability of power conversion systems; and modulation techniques for advanced power converters.

History of engineering & technology --- current source converter --- power decoupling --- power ripple --- computational complexity --- direct power control --- finite control set model predictive control --- PI controllers --- space vector modulation --- three-level T-type inverter --- input current ripple --- voltage multiplier --- shoot through state --- quasi-switched boost inverter --- Z-source inverter --- transformerless --- SEPIC converter --- single phase --- cascaded H-bridge inverter --- three-phase inverter --- Z-source network --- quasi-switched-boost network --- shoot-through --- quasi-z-source inverter --- grid-tied --- leakage current --- power efficiency --- counter-based --- one-comparator --- PWFM --- PWM --- PFM --- dc converter --- full bridge converter --- zero voltage operation --- multilevel inverter --- Pulse Width Modulation --- minimal number of commutations --- state machine --- Neutral Point Clamped Converter --- power converters --- EMI --- intelligent control --- classical gate driver --- interference sources --- carrier-based pulse width modulation --- offset function --- switching loss reduction --- H-bridge five-level inverter --- electromagnetic compatibility (EMC) --- switching model power supply (SMPS) --- conducted emission --- parametric modeling method --- vector fitting algorithm --- full-power testing --- high-power --- individual phase --- operation test --- static synchronous compensator (STATCOM) --- bidirectional DC/DC converter (BDC) --- dual mode operation --- current sharing --- multiplexed modulation --- low-voltage and high-current --- Lyapunov algorithm --- current sharing control --- confluence plate --- state feedback linearization --- grid-connected inverter --- LCL filter --- inductive power transfer (IPT) --- three-bridge switching --- constant current (CC) --- constant voltage (CV) --- fixed frequency --- fractional order elements --- high-frequency switching --- wireless power transmission --- active balance circuit --- bi-directional converter --- lithium battery --- series-connected battery --- fast charging --- motor drives --- full-bridge Buck inverter --- DC motor --- mathematical model --- differential flatness --- time-varying duty cycle --- circuit simulation --- experimental validation --- current source inverter --- common-mode voltage --- diode clamped multilevel inverter --- flying capacitor multilevel inverter --- cascade H bridge multilevel inverter --- total harmonic distortion --- PWM control techniques --- PSCAD/MULTISIM simulation --- model predictive control (MPC) --- neutral-point clamped (NPC) inverter --- disturbance observer --- parameter uncertainty --- stability analysis --- power factor adjustment --- matrix rectifier --- peak-current-mode (PCM) control --- boost converter --- stability --- parameter perturbation --- target period orbit tracking --- space-vector pulse-width modulation --- common-mode voltage elimination --- quasi-switched boost --- impedance network --- add-on pulse charger --- quick charge --- pulse charging --- Li-ion battery --- full bridge (FB) --- modular multilevel dc-dc converters (MMDCs) --- zero-voltage switching (ZVS) --- zero-current switching (ZCS) --- Photovoltaics --- Z-Source --- Current-fed --- Medium-Frequency --- Power-Imbalance --- harmonic --- RPWM --- selective voltage harmonic elimination --- single-phase inverter --- n/a

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• Reference Manager
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In recent years, power converters have played an important role in power electronics technology for different applications, such as renewable energy systems, electric vehicles, pulsed power generation, and biomedical sciences. Power converters, in the realm of power electronics, are becoming essential for generating electrical power energy in various ways. This Special Issue focuses on the development of novel power converter topologies in power electronics. The topics of interest include, but are not limited to: Z-source converters; multilevel power converter topologies; switched-capacitor-based power converters; power converters for battery management systems; power converters in wireless power transfer techniques; the reliability of power conversion systems; and modulation techniques for advanced power converters.

History of engineering & technology --- current source converter --- power decoupling --- power ripple --- computational complexity --- direct power control --- finite control set model predictive control --- PI controllers --- space vector modulation --- three-level T-type inverter --- input current ripple --- voltage multiplier --- shoot through state --- quasi-switched boost inverter --- Z-source inverter --- transformerless --- SEPIC converter --- single phase --- cascaded H-bridge inverter --- three-phase inverter --- Z-source network --- quasi-switched-boost network --- shoot-through --- quasi-z-source inverter --- grid-tied --- leakage current --- power efficiency --- counter-based --- one-comparator --- PWFM --- PWM --- PFM --- dc converter --- full bridge converter --- zero voltage operation --- multilevel inverter --- Pulse Width Modulation --- minimal number of commutations --- state machine --- Neutral Point Clamped Converter --- power converters --- EMI --- intelligent control --- classical gate driver --- interference sources --- carrier-based pulse width modulation --- offset function --- switching loss reduction --- H-bridge five-level inverter --- electromagnetic compatibility (EMC) --- switching model power supply (SMPS) --- conducted emission --- parametric modeling method --- vector fitting algorithm --- full-power testing --- high-power --- individual phase --- operation test --- static synchronous compensator (STATCOM) --- bidirectional DC/DC converter (BDC) --- dual mode operation --- current sharing --- multiplexed modulation --- low-voltage and high-current --- Lyapunov algorithm --- current sharing control --- confluence plate --- state feedback linearization --- grid-connected inverter --- LCL filter --- inductive power transfer (IPT) --- three-bridge switching --- constant current (CC) --- constant voltage (CV) --- fixed frequency --- fractional order elements --- high-frequency switching --- wireless power transmission --- active balance circuit --- bi-directional converter --- lithium battery --- series-connected battery --- fast charging --- motor drives --- full-bridge Buck inverter --- DC motor --- mathematical model --- differential flatness --- time-varying duty cycle --- circuit simulation --- experimental validation --- current source inverter --- common-mode voltage --- diode clamped multilevel inverter --- flying capacitor multilevel inverter --- cascade H bridge multilevel inverter --- total harmonic distortion --- PWM control techniques --- PSCAD/MULTISIM simulation --- model predictive control (MPC) --- neutral-point clamped (NPC) inverter --- disturbance observer --- parameter uncertainty --- stability analysis --- power factor adjustment --- matrix rectifier --- peak-current-mode (PCM) control --- boost converter --- stability --- parameter perturbation --- target period orbit tracking --- space-vector pulse-width modulation --- common-mode voltage elimination --- quasi-switched boost --- impedance network --- add-on pulse charger --- quick charge --- pulse charging --- Li-ion battery --- full bridge (FB) --- modular multilevel dc-dc converters (MMDCs) --- zero-voltage switching (ZVS) --- zero-current switching (ZCS) --- Photovoltaics --- Z-Source --- Current-fed --- Medium-Frequency --- Power-Imbalance --- harmonic --- RPWM --- selective voltage harmonic elimination --- single-phase inverter --- current source converter --- power decoupling --- power ripple --- computational complexity --- direct power control --- finite control set model predictive control --- PI controllers --- space vector modulation --- three-level T-type inverter --- input current ripple --- voltage multiplier --- shoot through state --- quasi-switched boost inverter --- Z-source inverter --- transformerless --- SEPIC converter --- single phase --- cascaded H-bridge inverter --- three-phase inverter --- Z-source network --- quasi-switched-boost network --- shoot-through --- quasi-z-source inverter --- grid-tied --- leakage current --- power efficiency --- counter-based --- one-comparator --- PWFM --- PWM --- PFM --- dc converter --- full bridge converter --- zero voltage operation --- multilevel inverter --- Pulse Width Modulation --- minimal number of commutations --- state machine --- Neutral Point Clamped Converter --- power converters --- EMI --- intelligent control --- classical gate driver --- interference sources --- carrier-based pulse width modulation --- offset function --- switching loss reduction --- H-bridge five-level inverter --- electromagnetic compatibility (EMC) --- switching model power supply (SMPS) --- conducted emission --- parametric modeling method --- vector fitting algorithm --- full-power testing --- high-power --- individual phase --- operation test --- static synchronous compensator (STATCOM) --- bidirectional DC/DC converter (BDC) --- dual mode operation --- current sharing --- multiplexed modulation --- low-voltage and high-current --- Lyapunov algorithm --- current sharing control --- confluence plate --- state feedback linearization --- grid-connected inverter --- LCL filter --- inductive power transfer (IPT) --- three-bridge switching --- constant current (CC) --- constant voltage (CV) --- fixed frequency --- fractional order elements --- high-frequency switching --- wireless power transmission --- active balance circuit --- bi-directional converter --- lithium battery --- series-connected battery --- fast charging --- motor drives --- full-bridge Buck inverter --- DC motor --- mathematical model --- differential flatness --- time-varying duty cycle --- circuit simulation --- experimental validation --- current source inverter --- common-mode voltage --- diode clamped multilevel inverter --- flying capacitor multilevel inverter --- cascade H bridge multilevel inverter --- total harmonic distortion --- PWM control techniques --- PSCAD/MULTISIM simulation --- model predictive control (MPC) --- neutral-point clamped (NPC) inverter --- disturbance observer --- parameter uncertainty --- stability analysis --- power factor adjustment --- matrix rectifier --- peak-current-mode (PCM) control --- boost converter --- stability --- parameter perturbation --- target period orbit tracking --- space-vector pulse-width modulation --- common-mode voltage elimination --- quasi-switched boost --- impedance network --- add-on pulse charger --- quick charge --- pulse charging --- Li-ion battery --- full bridge (FB) --- modular multilevel dc-dc converters (MMDCs) --- zero-voltage switching (ZVS) --- zero-current switching (ZCS) --- Photovoltaics --- Z-Source --- Current-fed --- Medium-Frequency --- Power-Imbalance --- harmonic --- RPWM --- selective voltage harmonic elimination --- single-phase inverter

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Power electronics technology is still an emerging technology, and it has found its way into many applications, from renewable energy generation (i.e., wind power and solar power) to electrical vehicles (EVs), biomedical devices, and small appliances, such as laptop chargers. In the near future, electrical energy will be provided and handled by power electronics and consumed through power electronics; this not only will intensify the role of power electronics technology in power conversion processes, but also implies that power systems are undergoing a paradigm shift, from centralized distribution to distributed generation. Today, more than 1000 GW of renewable energy generation sources (photovoltaic (PV) and wind) have been installed, all of which are handled by power electronics technology. The main aim of this book is to highlight and address recent breakthroughs in the range of emerging applications in power electronics and in harmonic and electromagnetic interference (EMI) issues at device and system levels as discussed in ?robust and reliable power electronics technologies, including fault prognosis and diagnosis technique stability of grid-connected converters and ?smart control of power electronics in devices, microgrids, and at system levels.

Q-factor --- lithium-ion power battery pack --- electromagnetic field (EMF) --- expert systems --- total harmonic distortion (THD) --- current-fed inverter --- rotor design --- class-D amplifier --- LCL-S topology --- current switching ripple --- system in package --- energy storage modelling --- smart micro-grid --- embedded systems --- equivalent inductance --- SHIL --- permanent magnet --- static var generator (SVG) --- permanent magnet synchronous motor (PMSM) --- control strategy and algorithm --- digital control --- zero-voltage switching (ZVS) --- SOC estimator --- electric power --- optimal design --- electromagnetic field interference (EMI) --- line frequency instability --- analog phase control --- five-phase permanent magnet synchronous machine --- distribution generation --- leakage inductance --- adjacent two-phase open circuit fault (A2-Ph) --- chaotic PWM --- electric vehicles --- CMOS chaotic circuit --- series active filter --- cascaded topology --- total demand distortion --- efficiency motor --- triangular ramp generator --- 4T analog MOS control --- inductive coupling --- induction machines --- nanocrystalline core --- semi-active bridge --- multi-level control --- simulation models --- voltage source inverters (VSI) --- battery management system BMS --- voltage source converter --- current control loops --- droop control --- particle swarm optimization --- variable control gain --- state of charge SoC --- extended Kalman filter --- transient control --- multi-objective optimization --- composite equalizer --- converter --- DHIL --- five-leg voltage source inverter --- axial flux machines --- bifurcation --- active receivers --- field programmable gate array --- Nyquist stability analysis --- electric vehicle --- static compensator --- stability --- common-mode inductor --- DC–DC converters --- support vector machines --- electromagnetic compatibility --- real-time simulation --- passive equalization --- matrix converters --- wireless power transfer --- digital phase control --- compensation topology --- volt-per-hertz control (scalar control) --- switching losses --- voltage control --- hybrid converter --- bidirectional converter --- coupling factor --- selective harmonic elimination method --- power electronics --- soft switching --- optimization design --- multilevel inverter --- five-phase machine --- phase-shift control --- lithium-ion battery --- voltage boost --- VPI active damping control --- parameter identification --- electrical engineering communications --- current control --- DC–DC conversion --- battery management system --- GaN cascode --- single-switch --- high-frequency modeling --- synchronous motor --- power quality --- water purification --- power factor correction (PFC) --- composite active vectors modulation (CVM) --- digital signal controller --- line start --- power density --- hardware in loop --- n/a --- fault diagnosis --- multi-level converter (MLC) --- induction motor --- dual three-phase (DTP) permanent magnet synchronous motors (PMSMs) --- neural networks --- electromagnetic interference filter --- battery chargers --- power converter --- harmonics --- multiphase space vector modulation --- torque ripple --- power factor correction --- electrical drives --- modular multilevel converter (MMC) --- active power filter --- double layer capacitor (DLC) models --- PMSG --- response time --- resonator structure --- floating-point --- effect factors --- DC-link voltage control --- sliding mode control --- phasor model technique --- wireless power transfer (WPT) --- slim DC-link drive --- fault-tolerant control --- lithium-ion batteries --- DC-AC power converters --- conducting angle determination (CAD) techniques --- variable speed pumped storage system --- impedance-based model --- one cycle control --- renewable energy sources --- series-series compensation --- cogging torque --- active rectifiers --- three-level boost converter (TLBC) --- DC-link cascade H-bridge (DCLCHB) inverter --- battery energy storage systems --- filter --- power management system --- improved extended Kalman filter --- dead-time compensation --- disturbance observer --- reference phase calibration --- frequency locking --- space vector pulse width modulation (SVPWM) --- predictive controllers --- nine switch converter --- transmission line --- spread-spectrum technique --- energy storage --- electromagnetic interference --- renewable energy resources control --- harmonic linearization --- misalignment --- plug-in hybrid electric vehicles --- high level programing --- nearest level modulation (NLM) --- magnetic equivalent circuit --- EMI filter --- permanent-magnet machines --- real-time emulation --- switched capacitor --- back EMF --- fixed-point --- HF-link MPPT converter --- condition monitoring --- WPT standards --- switching frequency --- switching frequency modelling --- high frequency switching power supply --- field-programmable gate array --- three-phase bridgeless rectifier --- ice melting --- AC–DC power converters --- hybrid power filter --- PSpice --- microgrid control --- total harmonic distortion --- grid-connected inverter --- dynamic PV model --- fuzzy --- boost converter --- SiC PV Supply --- voltage doubling --- nonlinear control --- distributed control --- power system operation and control --- one phase open circuit fault (1-Ph) --- direct torque control (DTC) --- battery modeling --- non-linear phenomena --- frequency-domain analysis --- advanced controllers --- vector control --- fixed-frequency double integral sliding-mode (FFDISM) --- power converters --- modulation index --- DC-DC buck converter --- small signal stability analysis --- active equalization --- voltage source inverter --- hardware-in-the-loop --- current source --- synchronization --- grid-connected VSI --- synchronous generator --- fault tolerant control --- DC-DC converters --- DC-DC conversion --- AC-DC power converters