This paper proposes a distributed predictive secondary control strategy to share imbalance in three-phase, three-wire isolated AC Microgrids. The is based on novel approach where the sharing among generators controlled through of single-phase reactive power. main characteristic proposed methodology inclusion an objective function and dynamic models as constraints formulation. controller relies local measurements information from neighboring generators, it performs desired action constrained...

Multilevel converters have been turned into a prominent solution for high-power, medium-voltage applications. However, controlling multilevel is complex task, which typically implemented through Single-Input Single-Output loops or via finite control set model predictive (FCS-PC). Moreover, among the latest proposed converters, five-level T-type nested neutral point clamped (5L-T-NNPC) stands out due to its reduced hardware requirements and wide voltage range Although FCS-MPC has good...

Microgrids are the cornerstone for a new model of electrical generation based on renewable resources. Commonly microgrids controlled with centralised hierarchical structure, which is inherited from power systems. However, time-scale separation between traditional fast frequency restoration and slow economic dispatch may be counterproductive in long run because long-term increases prediction uncertainty. In an effort to improve economical operation microgrids, this work proposes distributed...

This article presents a novel scheme based on distributed model-based predictive control for the secondary level of hybrid ac/dc microgrids (MGs). Prediction models droop and power-transfer equations are proposed to characterize generators in both ac dc sub-MGs, whereas power balance constraints used predict behavior interlinking converters. The operational (such as powers action limits) included all formulations. Experimental results validate following cases: 1) load changes, working within...

Hybrid AC/DC microgrids (H-MGs) are a prominent solution for integrating distributed generation and modern AC DC loads. However, controlling these systems is challenging as multiple electrical variables need to be controlled coordinated. To provide flexibility the control system, can regulated specific values or within secure bands. This paper proposes set of model predictive schemes secondary level certain other pre-defined bands into H-MGs. Specifically, optimal dispatch active reactive...

In this study, we propose a virtual reality biphasic separator methodology in an immersive industrial environment. It allows the training of students or engineers process and automatic control. On other hand, operating performance requires advanced control strategies because has multivariable nonlinear characteristics. context, testing several techniques. The methodology, involving virtualization separator, includes three stages. First, mathematical model is obtained. second stage...

The increasing demand for energy and the high penetration of distributed resources require evolution current electrical systems toward smarter more reliable electric grids. In this regard, microgrids (MG) play a vital role in integrating (DER), loads, storage systems. However, microgrid architectures lack versatility flexibility terms control, limiting their expansion. This paper presents multi-mode master-slave control approach to increase DC-coupled hybrid microgrids. proposed scheme...

This paper describes a flexible testbed of hybrid AC/DC microgrid developed for research purposes. The experimental setup is composed 3 AC and 6 DC distributed generator units which are emulated by using three-legs inverters settable output filters. architecture allows to validate control schemes upstream the modulation stage each inverter, real-time targets Mat-lab/Simulink interface. Two independent communication networks can be used. first one based on optical fibre technology, whereas...

DC microgrids ease the integration of renewables and can be easily put together with plug-and-play operation. However, most control techniques in focus on voltage regulation without considering its economical Furthermore, economic dispatch different generation is usually implemented at a higher level for long-term operation, this subject to prediction uncertainties. Therefore, paper proposes novel distributed model predictive strategy system restoration same time-scale microgrids. Each...

Hybrid AC/DC microgrids are of special interest for energization due to their flexibility, low infrastructure investments, reduced conversion losses, and reliability against failures on the utility grid. In these systems, global economic dispatch needs communication between AC DC subgrids achieve a near-optimal solution since incremental costs all generators need be equalized. Hence, this paper proposes distributed coordination by means finite-time controller microgrid's interlinking...

Current distortion is a critical issue of power quality because the low frequency harmonics injected by adjustable speed drives increase heating losses in transmission lines and induce torque flickering induction motors, which are widely used mining facilities. Although classical active filtering techniques mitigate oscillatory components imaginary power, they may not be sufficient to clean sensitive nodes undesirable components, some related real power. However, usage electronic converters...

The modular multilevel converter (MMC) is a prominent solution for medium- to high-voltage and high-power conversion applications. Recently, distributed control strategies have been proposed make this in terms of software hardware. In architecture, high-level tasks are performed by central controller (CC), whereas low-level achieved local controllers (LCs) placed on the MMC submodules. CC LCs use cyber-physical system (CPS) share all necessary information execute their respective schemes....

The rapid advance of technology has caused for engineers who graduate a few years ago to have definite shortcomings in the use, design and maintenance modern industrial control systems. Such is case wireless WirelessHART, which by their high performance flexibility increasingly common today's industry. To correct this growing situation work developed educative module being used Continuing Education Unit University Armed Forces ESPE. final objective develop open institutional courses where...

This paper proposes a distributed predictive secondary controller to tackle together frequency and voltage regulation, realize the economic dispatch reactive power sharing of generation units in isolated AC microgrids. Contrary most approaches, proposed achieves consensus objectives (economic sharing) with soft constraints (keep both average within predefined bands instead restoring them their nominal values). Extensive simulation work validates effectiveness for communication problems...

In order to compare and improve battery energy storage system (BESS) models, this work exhibits a comparative study of the Coppeti, Coulomb counting, Thevenin based models State Charge (SoC) for lead-acid batteries. Additionally, multi-model estimator that merges exploits benefits aforementioned is proposed by using an extended Kalman filter (EKF). The performance different SoC are evaluated means simulations in economic dispatch problem isolated microgrid with Energy Management System...

Hybrid AC/DC microgrids are of special interest due to their flexibility, low infrastructure investments, and reliability against failures on the utility grid. The economic dispatch in AC DC subgrids requires communication achieve near optimal solutions, which makes cooperative control a promising feasible approach be used by microgrid's interlinking converter. This paper proposes fully distributed finite-time strategy over converter, ensures an operation additionally takes care about...

This paper proposes a two-level hierarchical energy management system (EMS) with demand side (DSM) capabilities for grid-connected microgrids (MGs). The proposed strategy is based on model predictive control (MPC) prediction intervals obtained through the fuzzy numbers method. While Main Grid level EMS aims auto-consumption within MG, i.e., minimise drawn main grid, Microgrid tracks power and consumption references, sent from higher level, to manage MG resources load consumption....

This paper evaluates experimentally the performance of a distributed secondary control strategy applied to hybrid ac/dc–microgrid in event common communication issues, such as loss and delays. The two scenarios are tested on 24kW laboratory-scale prototype.

This paper proposes a distributed model predictive control (DMPC) scheme for inter-cell and inter-cluster capacitor voltage balancing of cascaded H-bridge multilevel static synchronous compensator (STATCOM). The proposed DMPC does not require central controller to perform these tasks as they are cooperatively performed by local controllers placed in the STATCOM cells. Three case scenarios analysed highlight features scheme. results demonstrate that is able manage large communication delays failures.