بایگانی برچسب برای: power quality

DSP-Controlled Power Electronic Interface[taliem.ir]

DSP-Controlled Power Electronic Interface for Fuel-Cell-Based Distributed Generation

The private power producers are increasing rapidly to meet rising load demand in domestic, commercial, and industrial sectors. In this scenario, the distributed generation systems (DGs) play an important role over fossil fuel generation. Among different distributed generation technologies such as fuel cell, wind power, and solar; the fuel-cell-based distributed generation is becoming more popular due to its high efficiency, cleanliness, modularity, and cost effectiveness. The development of a suitable power electronic interface and control schemes, therefore, play vital role in regulating fuel-cell voltage, both under steady and transient conditions. This paper, therefore, presents a DSP-controlled single stage power electronic interface for fuel-cell-based generation intended for residential/grid connected applications. The presented scheme generates pulse width modulation (PWM) control signals using TMS320F2812 DSP controller interfaced with MATLAB/Simulink model. A comprehensive simulink based model of the scheme is evolved and discussed. The experimental results are presented for varying loads and transient conditions.
SIMULATION OF D-STATCOM AND DVR IN POWER SYSTEMS[taliem.ir]

SIMULATION OF D-STATCOM AND DVR IN POWER SYSTEMS

A Power quality problem is an occurrence manifested as a nonstandard voltage, current or frequency that results in a failure or a mis-operation of end user equipments. Utility distribution networks, sensitive industrial loads and critical commercial operations suffer from various types of outages and service interruptions which can cost significant financial losses. With the restructuring of power systems and with shifting trend towards distributed and dispersed generation, the issue of power quality is going to take newer dimensions. In developing countries like India, where the variation of power frequency and many such other determinants of power quality are themselves a serious question, it is very vital to take positive steps in this direction .The present work is to identify the prominent concerns in this area and hence the measures that can enhance the quality of the power are recommended .This work describes the techniques of correcting the supply voltage sag, swell and interruption in a distributed system. At present, a wide range of very flexible controllers, which capitalize on newly available power electronics components, are emerging for custom power applications. Among these, the distribution static compensator and the dynamic voltage restorer are most effective devices, both of them based on the VSC principle. A DVR injects a voltage in series with the system voltage and a D-STATCOM injects a current into the system to correct the voltage sag, swell and interruption. Comprehensive results are presented to assess the performance of each device as a potential custom power solution .
DSP-Controlled Power Electronic Interface[taliem.ir]

DSP-Controlled Power Electronic Interface for Fuel-Cell-Based Distributed Generation

The private power producers are increasing rapidly to meet rising load demand in domestic, commercial, and industrial sectors. In this scenario, the distributed generation systems (DGs) play an important role over fossil fuel generation. Among different distributed generation technologies such as fuel cell, wind power, and solar; the fuel-cell-based distributed generation is becoming more popular due to its high efficiency, cleanliness, modularity, and cost effectiveness. The development of a suitable power electronic interface and control schemes, therefore, play vital role in regulating fuel-cell voltage, both under steady and transient conditions. This paper, therefore, presents a DSP-controlled single stage power electronic interface for fuel-cell-based generation intended for residential/grid connected applications. The presented scheme generates pulse width modulation (PWM) control signals usingTMS320F2812 DSP controller interfaced with MATLAB/Simulink model. A comprehensive simulink based model of the scheme is evolved and discussed. The experimental results are presented for varying loads and transient conditions.
Benefits of Power Electronic Interfaces[taliem.ir]

Benefits of Power Electronic Interfaces for Distributed Energy Systems

With the increasing use of distributed energy (DE) systems in industry and its technological advancement, it is becoming more important to understand the integration of these systems with the electric power systems. New markets and benefits for DE applications include the ability to provide ancillary services, improve energy efficiency, enhance power system reliability, and allow customer choice. Advanced power electronic (PE) interfaces will allow DE systems to provide increased functionality through improved power quality and voltage/volt–ampere reactive (VAR) support, increase electrical system compatibility by reducing the fault contributions, and flexibility in operations with various other DE sources, while reducing overall interconnection costs. This paper will examine the system integration issues associated with DE systems and show the benefits of using PE interfaces for such applications.
Advanced Control Architectures for Intelligent[taliem.ir]

Advanced Control Architectures for Intelligent Microgrids – Part II: Power Quality, Energy Storage, and AC/DC MicroGrids

This paper summarizes the main problems and solutions of power quality in Microgrids, distributed energy storage systems, and AC/DC hybrid Microgrids. First, power quality enhancement of grid-interactive Microgrids is presented. Then, cooperative control for enhance voltage harmonics and unbalances in Microgrids is reviewed. After, the use of static synchronous compensator (STATCOM) in grid-connected Microgrids is introduced in order to improve voltage sags/swells and unbalances. Finally, the coordinated control of distributed storage systems and AC/DC hybrid microgrids is explained.