Floods are the most frequent natural hazard globally and incidences have been increasing in recent years as a result of human activity global warming, making significant impacts on people’s livelihoods wider socio-economic activities. In terms management environment water resources, precise identification is required areas susceptible to flooding support planners implementing effective prevention strategies. The objective this study develop novel hybrid approach based Bald Eagle Search...

This report details the case of a 60-year-old male with grade 3 intra-diverticular bladder tumor originating from an acquired diverticula. The patient presented painless gross hematuria lasting three weeks. Imaging and histopathological analysis confirmed high-grade papillary transitional cell carcinoma. He underwent robot-assisted radical cystectomy pelvic lymphadenectomy creation intracorporeal Studer neobladder. surgery was successful, had uneventful recovery. Intra-diverticular tumors...

Monitoring changes in coastal sea levels is necessary given the impacts of climate change. Information on level and its are important parameters connection to change processes. In this study, radar altimetry data from successive satellite missions, European Remote Sensing-2 (ERS-2), Jason-1, Envisat, Jason-2, Satellite with ARgos ALtiKa (SARAL), were used measure surface heights (SSH). Altimetry-derived SSH was validated for southern Bay Biscay, using records seven tide gauges located along...

The structure and principle of the T-type 3-level reverse voltage source that will be fed to three-phase induction motors presented in this study. implementation Space Vector Pulse Width Modulation (SVPWM) math models motor, stator currents, speed controller design electric traction drive system based on Field-Oriented Control (FOC) also shown. This three-level inverter FOC decreases Total Harmonic Distortion (THD) more than previous two-level inverters. By combining control with inverter,...

A methodology has been developed for improving seismic depth images generated in areas of complex structure, such as subsalt. The main goal the wave-equation angle-based illumination workflow is to calculate a set weight gathers and apply them migrated field angle gathers. To obtain meaningful gathers, it important use field-acquisition geometry information, migration velocity models, interpreted horizons. model based requires horizons conformable real preferably picked on images....

This paper presents the drive control of a Permanent Magnet Synchronous Motor (PMSM) fed by multi-level inverter for electric vehicle application. In particular, advantage torque mobilization PMSM engine has been selected cars. addition, to improve transmission quality vehicles ensure requirements, T-type three-level will be proposed in structure vehicles. Moreover, challenge entails determining appropriate physical qualities. Therefore, design an active damping and current controller...

The AC battery utilizing second-life time batteries has gained great interest currently with the advantages of both power solutions and economic benefits. In this system, converters play a crucial role in stable effective operation system. This paper focused on AC/DC stage chosen topology being interleaved full bridge (IFB) converter due to its flexibility ability increase rate For sake high-performance operation, various pulse width modulation (PWM) methods for are analyzed. First, based...

Z-source inverters (ZSIs) are single-stage power converters with both voltage buck and boost capabilities provided by the unique impedance network ability to operate during shoot-through states. This study proposes a novel non-linear adaptive backstepping method for dc-side controllers in multi-loop control scheme of ZSI grid-tied photovoltaic (PV) systems. Despite variability capacitor inductor values network, proposed controller guarantees robust stable operation under varying levels PV...

Low-frequency high-voltage ac transmission scheme has recently been proposed as an alternative approach for bulk power transmission. This paper proposes a multi-period optimal flow (OPF) multi-frequency HVac system that interconnects both conventional 50/60-Hz and low-frequency grids using back-to-back converters with centralized control scheme. The OPF objective is to minimize losses by determining the dispatch generators, shunt capacitors, converters. constraints include operational of all...

This paper presents the advanced control method together with disturbance rejection aims to obtain low of total harmonic distortion (THD). The expectation is that output voltage satisfied requirements EN 62040 THD less than 5%. Therefore, this proposes a new observer (DOB) without requirement information first derivative for three phase level (TPTL) T-type inverter system. proposed DOB based on measurable states, which are used such an inversed model find real disturbance. First, was...

The paper presents the development of a wind turbine emulator, which consists an induction motor driven by torque control inverter, and dead-beat controller plays important role in this structure. emulator system includes current controller, speed mathematical model turbines, rotor blade characteristics, tower effect inertia. advantages are various profiles turbines can be simulated as desired software it is also integrated data acquisition to verify algorithms display parameters....

This paper proposes the design and implementation of a 15kW three-phase T-type inverter. Fuji Electric's new generation IGBT module (V series) using RB-IGBT technology is applied for converter, due to its higher efficiency from conventional IGBTs reduce switching losses on semiconductors. Under full load conditions, overall converter can reach over 98%. The control sine PWM modulation are implemented DSP kit named TMS320F3F28379D. In addition, generated with fundamental third harmonics sin...

Abstract Home battery has become more and popular in which the AC is a trending product along with AC-coupled system. The energy conversion of an commonly consists two-stage power converter to flexibly connect wide-range input voltage different grid or load types. This study specifically concentrates on DC/DC stage plays important role transferring battery. In addressing need for isolation, bidirectional flow, limited current ripple, Current-fed Dual Active Bridge (CFDAB) structure chosen...

An urban railway is a complex technical system that consumes large amounts of energy, but this means transportation still has been obtained more and popularity in densely populated cities because its features high-capacity capability, high speed, security, punctuality, lower emission, reduction traffic congestion. The improved energy consumption environment are two the main objectives for future transportation. Electrified trains can meet these by recuperation reuse regenerative braking -...

Abstract Finite control set ModelPredictive (FCS-MPC) with the principle of considering all voltage vectors to find optimal vector for multilevel inverter in a very small sampling cycle is hardly feasible because there no modulation part, implementation optimizing common-mode and switching number should be performed cost function. To solve above problem, this paper proposes an improved method model predictive current selecting 19 adjacent using weighting coefficients elimination...

Permanent magnet synchronous motor (PMSM) is a special type of electric that has many applications such as in the manufacturing industry robots, self-propelled mechanisms, medical fiel. In this paper, permanent control structure according to field-oriented (FOC) algorithm will be implemented on field-programmable gate array (FPGA) card. Function blocks FOC for example PI controller, space vector pulse width modulation (SVPWM) integrated into individual itegrated circuit (Ics) then connected...

Using Hybrid Energy Storage System (HESSbattery and super capacitor) to extend the lifespan of batteries travelled distances has been selected by many research laboratories in world. This is particularly due fact that have high energy density, but its reduced when operating with electric currents harmonics. In this paper, we use Fast Fourier transform Analyzer traction current as basis distribute suitable battery capacitor. The algorithm simulated Matlab then implemented DSP card control a...

A longitudinal control design called the G-command, alpha follow-up is described that significantly improves lag between pitch angle and flight-path responses associated with hypersonic flight. The technique relies on classical, successive loop closures to determine architecture introduces a direct-lift strategy dynamic compensation. This compensation constrains washes out body-flap input avoid excessive flap deflection heating while providing angle-of-attack at engine inlet. final was...

We review our one-way and two-way wave-equation based illumination weighting workflows discuss their impact on synthetic well tie estimation. begin by comparing workflows, explain the differences between methods describe procedure. then demonstrate of workflow improving estimation at Thunder Horse subsalt development in Gulf Mexico

This paper proposes a novel control design for Current-Fed Dual Active Bridge (CFDAB) converter in boost mode. The Double PWM plus Phase Shifted (DPDPS) modulation is applied to the due its considerable merits. A small-signal model developed output voltage stably Simulations of CFDAB were conducted verify proposed model. results show that system can achieve high performance, not only dynamic response but also steady-state.

Induction motor is widely used in industrial applications due to its low cost, simple design, and reliability. In this paper, the induction control structure FOC will be implemented on FPGA platform for drive system using GaN devices. By technology, switching frequency can up 100 kHz instead of 2 20 when IGBT transistors. It leads a significant reduction loss as well increasing power density electronic converter. The programmed VHDL language system-on-chip environment Xilinx Zybo z7010...

This paper will present why choosing a 7-level reverse voltage source fed to three-phase induction motors the railway traction motor. In addition, this shows implementation of space vector pulse width modulation (SVPWM) and math model motor, stator currents, speed controller design electric drive system based on field-oriented control (FOC). By MATLAB/Simulink method, multi-level inverter in FOC structure reduces total harmonic distortion (THD) more than other inverters such as 3 5-level...

Abstract This paper concentrates on an algorithm with model predictive control for current and distributed MPPT cascaded H-bridge multilevel photovoltaic (PV) inverter applications. In conventional method, in each sampling period, a discrete-time is employed to predict the future values all vectors of voltage. The voltage vector will be approved if it minimizes cost function. Because has so many available vectors, there large quantity calculations, hence makes difficult implementing normal...

Along with the development of powerful microprocessors and microcontrollers, applications model predictive controller, which requires high computational cost, to fast dynamical systems such as power converters electric drives have become a tendency recently. In this paper, two solutions are offered quickly develop finite set current control for induction motor fed by 3-level H-Bridge cascaded inverter. First, field programmable gate array (FPGA) capability parallel computation is employed...