This research deals with the efficiency comparison between AC and DC distribution networks that can provide electricity to rural urban areas from point of view grid energy losses greenhouse gas emissions impact. Configurations for medium- low-voltage are analyzed via optimal power flow analysis by adding voltage regulation devices capabilities sources in mathematical formulation. Renewable resources such as wind photovoltaic considered using typical daily generation curves. Batteries...

This paper addresses the optimal dispatch problem for battery energy storage systems (BESSs) in direct current (DC) mode an operational period of 24 h. The is represented by a nonlinear programming (NLP) model that was formulated using exponential voltage-dependent load model, which main contribution this paper. An artificial neural network employed short-term prediction available renewable from wind and photovoltaic sources. NLP solved general algebraic modeling system (GAMS) to implement...

In this paper, a control strategy for an isolated DCDC dual active bridge converter to adapt different voltage levels in DC microgrid is proposed. The allows regulating the output while maintaining zero mean value of current high frequency transformer. system represented with linearized version its generalized average model and controller designed using classical techniques. performance proposal validated simulations experimental results.

An interconnection and damping assignment (IDA) controller is proposed for regulating the output voltage frequency of a three-phase DC–AC converter, independently supplied load. A modified IDA strategy used to design controller, in order obtain proper tracking reference variables. Moreover, closed-loop stability ensured through choice desired energy function. Different from classical approaches, such as conventional PI control dq coordinates, provides better dynamic response while it allows...

In this paper, a proportional-integral passivity-based controller (PI-PBC) is proposed to regulate the amplitude and frequency of three-phase output voltage in direct-current alternating-current (DC-AC) converter with an LC filter. This used supply energy AC loads hybrid renewable based systems. The strategy uses well-known (PI) actions guarantees stability system by means Lyapunov theory. continues maintain simplicity robustness PI controls using Hamiltonian representation system, thereby...

This express brief presents a nonlinear active and reactive power control for superconducting magnetic energy storage (SMES) system connected in three-phase distribution networks using pulse-width modulated current-source converter (PWM-CSC). The passivity-based (PBC) theory is selected as technique, since the open-loop dynamical model exhibits port-Hamiltonian (pH) structure. PBC exploits pH structure of to design general law, which preserves passive closed-loop via interconnection damping...

A new controller for a grid-connected inverter with an LCL filter is proposed in this paper. The system described by its complex representation, and the designed using root locus method. representation allows considerable reduction order of system, simplifying design task making it possible to use advanced techniques, such as locus. adds extra degree freedom that makes move poles systems improve stability speed response compared conventional controls. This paper includes detailed discussion...

Passivity-based nonlinear control for an isolated microgrid system is proposed in this paper. The consists of a photovoltaic array and battery energy storage connected to point common converters, supplying constant power load. purpose strategy maintain the output direct current voltage its reference value under load variations, improving interaction. represented by state space averaged model controller designed using interconnection damping assignment strategy, which allows obtaining...

This research presents a multi-objective dispatch (MOD) for energy storage systems (ESS) utilizing batteries and renewable resources (RES) in distribution network applications. proposal employs convex weighting-based approach. The exact MOD nonlinear programming model, which is non-convex due to the power balance constraint, approximated using second-order cone equivalent order ensure global optimum, leveraging properties of objective functions conic complex-variable domain. MOD, based on...

The growing global demand for electrical energy presents an urgent need more efficient and reliable systems to meet this [...]

The problem associated with economic dispatch of battery energy storage systems (BESSs) in alternating current (AC) distribution networks is addressed this paper through convex optimization. exact nonlinear programming model that represents the transformed into a second-order cone (SOCP) model, thereby guaranteeing global optimal solution-finding due to conic (i.e., convex) structure solution space. proposed BESS considers possibility injecting/absorbing active and reactive power, turn,...

The influence of using different methods to detect the positive sequence grid voltage fundamental component on shunt active filter control is analyzed in this work. Three kind detectors are considered: based pq Teory, EPLL-based and those SOGI. Shunt behavior through simulation results each one these balanced voltage, unbalanced distorted conditions.

The optimal expansion of AC medium-voltage distribution grids for rural applications is addressed in this study from a heuristic perspective. routes feeder are selected by applying the concept minimum spanning tree limiting number branches that connected to substation (mixed-integer linear programming formulation). In order choose caliber conductors routes, maximum expected current absorbed loads calculated, thereby defining thermal bound conductor caliber. With topology and initial...

This express brief presents the stability analysis of single-phase microgrids (SP-MG) operating under master-slave connection with constant power terminals. The SP-MG is composed linear elements, nonlinear loads, and distributed generators modeled as PQ terminals interconnected through electronic converters. Lyapunov's direct method a Hamiltonian representation grid used to demonstrate stability. non-autonomous model transformed into an autonomous equivalent based on dynamics error. proposed...

This paper presents a global tracking passivity-based proportional-integral (PI) control for output voltage regulation of dc-dc Buck converter. The proposed controller is based on passivity formulation since converter has passive structure in open-loop. Additionally, the takes advantage PI actions to design law that guarantees asymptotically stability Lyapunov's sense under closed-loop operation. does not depend parameters, which makes it robust controller. robustness checked by comparing...

A passivity-based nonlinear controller for a three-phase front end converter used connection of renewable energy sources to the grid is presented in this paper. The control objectives are inject all generated power into and reactive exchanged with system. system represented by its port-controlled Hamiltonian model designed interconnection damping assignment. design allows direct DC link dynamics avoids use derivatives implementation equations. performance proposed strategy validated through...

A magnetic levitation control system is developed in this work.The non-linear model linearized around the operating point.Two loops, an inner current loop and outer position are designed using linear obtained.The hardware implementation described.Simulation experimental results shown to validate dynamic response of proposed control.

A passivity based control strategy for an electric vehicle single-phase battery charger is presented in this paper. The proposed allows charging the bank with constant current and voltage profile, while ensuring unity power factor low distortion grid current. system consists of two converters whose controllers are designed using interconnection damping assignment. In order to avoid achieving a fast DC-Link voltage, trajectory-tracking controller, both proposed. With aim, variable reference...