The hierarchical control structure was introduced to allow the integration of power electronics based distributed generation into microgrid in a smart and flexible manner. main aim primary controller such is achieve accurate active reactive sharing whereas secondary aims ensure voltage frequency (V/f) stability. Generally, converter level controllers utilize classical nested loop that suffer from slow dynamic response cumbersome parameters tuning. existing model estimation are fast, but...

This article proposes a novel generalized predictive direct power control (PDPC) with constant switching frequency for multilevel four-leg (4L) grid connected converter (GCC) diode clamped (DCC). A new model 4L-GCC is developed in which the proposed PDPC can operate without any modulation stage. During each period, four appropriate vectors are selected and applied using precalculated times. Moreover, these only from one sector, approach to calculate times level of 4L-DCC. The ensure better...

This paper describes a novel single-phase thirteen-level packed E-cell inverter (PEC13) for grid-tied photovoltaic (PV) systems. PEC13 topology contains six power switches, two four-quadrant switches and four DC capacitors. The main advantage offered by the proposed is ability to produce different voltage levels without any modifications in circuit when open fault occurs on one or switches. In faulty condition, can continue its operation behaves as PEC9 PUC7 configuration. Furthermore,...

The tuning of weighting factor has been considered as the most challenging task in implementation multi-objective model predictive control (MPC) techniques. Thus, this paper proposes an artificial intelligence (AI)-based autotuning design a finite set MPC (FCS-MPC) applied to grid-tied seven-level packed U-cell (PUC7) multilevel inverter (MLI). studied topology is capable producing output voltage waveform and inject sinusoidal current grid with high power quality while using reduced number...

An adaptive sliding mode observer (ASMO) for sensor-less DC-DC boost converter control using model predictive (MPC) switching strategy is investigated in this study. The developed scheme involves two loops. first one an outer voltage loop with a simple PI controller. second inner current algorithm uses the ASMO estimations prediction of whole system. concept easy to understand and implement. Simulation experimental results show good performance, verify validity scheme, demonstrate that...

The control of multibody drill-string systems is not easy and designing such considered challenging because the difficulty in dynamic analysis its nonlinear characteristics parametric uncertainties. An optimal hybrid interval Type-2 fuzzy PID+I logic controller (OH-IT2FPID+I) using a practical swarm optimization algorithm for multi-degree-of-freedom oil well system proposed this paper. suggested concept aimed to overcome several bit sticking troubles stick–slip vibration by regulating rotary...

This paper proposes a high performance control scheme for double function grid-tied double-stage PV system. It is based on model predictive power with space vector modulation. strategy uses discrete of the system time domain to generate average voltage at each sampling period, aim canceling errors between estimated active and reactive values their references. Also, it imposes sinusoidal waveform current grid side, which allows filtering without harmonic currents identification phase. The...

This paper proposes an auto-tuned finite control set-model predictive (FCS-MPC) for a grid-tied singlephase crossover switches cell (CSC) inverter. The multilevel inverter (MLI) under study generates 9 voltage levels. FCSMPCobjective is to minimize the total harmonic distortion (THD) of current fed grid with unity power factor while regulating capacitor at its reference value maintain switching losses are reduced by managing redundant states selection. Artificial Neural Network (ANN) based...

In the area of sustainable development, solar energy has shown significant potential as a renewable source and it considered important one in electricity generation. This paper focuses on power quality improvement distribution network using three phases shunt active filter supplied by photovoltaic system. A new control method used to eliminate harmonic currents caused nonlinear loads compensate reactive been presented this work. greatest impact accuracy current compensation is based direct...

Model Predictive Control (MPC) provides various advantages over traditional controllers in power electronics applications. However, reducing the complexity and computational burden of Finite-control set-model predictive control (FCS-MPC) multi-leg multilevel inverters is still a challenging task. In this paper, simplified model direct (MPDPC) for three-level, four-leg grid-connected converter (4L-GCC) proposed. The main idea proposed strategy to reduce algorithm by using only switching...

This article aims to propose a new simplified and generalized three-dimensional space vector modulation (3DSVM) for four-leg multilevel diode clamped converter (FL-DCC). The idea is use the diagram of FL-DCC in <italic xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">αβγ</i> space, while all calculation stages 3DSVM algorithm will be carried out frame called xmlns:xlink="http://www.w3.org/1999/xlink">ρστ</i> . proposed provides, any inverter level, 1)...

Abstract This paper presents a novel controller for drill string systems based on super-twisting sliding mode theory. The aim is to eliminate the stick-slip vibration and maintain constant velocity at desired reference value. proposed inherently attenuates torsional while ensuring stability high efficiency of string. A discontinuous lumped-parameter model vertical strings four components (rotary table, pipes, collars, bit) considered. Karnopp friction adopted simulate nonlinear bit-rock...

This paper presents an effective voltage and frequency (V/1f regulation approach for interconnected gridforming inverters in ac microgrid as enabling technology futuristic power grid. The proposed control scheme leverages model predictive framework enhanced active reactive sharing towards robust V/f regulation. traditional PI-based network of grid-forming requires substantial tuning effort due to the nested loop architecture. Furthermore, PIbased may not guarantee optimal under different...

In this paper, a high-reliability photovoltaic (PV) system based on 9-level Packed U-Cells (PUC9) inverter is investigated. The PUC9 cost-effective topology, which requires less components to generate nine voltage levels than traditional Multilevel Inverter (MLI) topologies. main goal of the proposed inject PV power into grid with high efficiency and high-power quality (unity factor low THD). A Finite-set Model Predictive Control (FS-MPC) approach designed control injected current while...

Droop control provides a decentralized method of between distributed generators (DGs) in the primary (PC) level islanded AC microgrids (MGs). However, this results deviations system's voltage and frequency (V/f). Secondary (SC) is therefore required to restore such deviations. This paper presents simple V/f restoration technique that utilizes finite set MPC (FCS-MPC) achieve secondary for MG system. It makes use predicted voltages currents from FCSMPC estimate deviation parameters enable...