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The static synchronous compensator(STATCOM) using power electronics as a shunt device of the Flexible AC Transmission Systems (FACTS) is attracting an increasing interest in power system research and in electric utilities. This paper proposes a novel multi-level structure topology with zigzag transformer for three-level inverter used in STATCOM. Moreover, selective harmonic elimination pulsewidth...
The scope of this guide is to define and characterize control architecture for high-power electronics from power semiconductor device levels to the power system level. This guide covers theapplication of power electronics in the areas of Power Quality/Custom Power, Flexible AC Transmission Systems (FACTS), High Voltage DC Transmission (HVDC), Distributed Generation, Energy Storage applications, etc...
As system planners consider improvements and/or enhancements to the grid, compatibility with existing devices is a key-determining factor as to the preferred solution. The variable frequency transformer (VFT) has proven itself to be compatible with all types of power system equipment. Through simulations and examples of actual and potential VFT installations, the VFT demonstrates compatibility and...
This paper is focused to achieving the efficient operation of an twelve-pulses Static Synchronous Compensator (StatCom) controlled by a fixed point DSP. The controller includes a digital Phase-Locked-Loop (PLL), pulse generator modules for firing angle control of the Voltage Source Converter (VSC), along with the appropriated circuitry for charging the DC Capacitor. The StatCom output signal processing...
Summary form only given. The paper presents a gradient-based nonlinear optimization wrapper for an electromagnetic transient simulation program to assists in the design of hardware and control parameters of FACTS apparatus. A new second-order sensitivity analysis method is introduced that quantifies the sensitivity of the optimal solution to parameter uncertainties. Using this approach, the sensitivity...
This paper introduces a multilevel STATCOM for electric arc furnace power quality enhancement. An eleven level cascaded multilevel converter is used to alleviate the impacts of an unbalanced arc furnace load. The STATCOM provides a power electronic-based means of embedded control for reactive power support.
The following topics are dealt with: matrix converter technology; sensorless motor control; photovoltaic energy systems; semiconductor device technology; wind energy conversion technology; DC-DC converter technology; multilevel inverter technology; active filters; fuel cell energy conversion; resonant converters; integration technology; aerospace technology; grid-interface inverters; motor drives;...
Voltage-source converter (VSC) based utility apparatus such as static compensator (STATCOM) and high-voltage direct-current (HVDC) transmission technologies has made the use of pulse-width modulated (PWM) control and insulated gate bipolar transistors (IGBTs) possible at development level and in a number of applications at commercial level. However, the presence of semiconductor switching losses associated...
Medium-voltage converters, originally developed for industrial drives (e.g. in steel and paper mills), have nowadays entered utility applications. For several years, the growing need for power quality in distribution systems in conjunction with the large scale integration of renewable energy sources has boosted the demand for new technologies. Together with communication systems, power electronics...
This paper investigates distance learning with particular attention to experimental work. PEMCWebLab provides the user with a practical experience in power electronic education. It was designed based on leading ideas and had clear targets. Virtual and distance laboratories extend the application area of the Web. This leads to an openly integrated environment which facilitates the sharing of not only...
This contribution to the Panel on "Intelligent Techniques Applied to Transmission Systems" the FACTS technology, its principle power electronics controllers, state of the art and planning issues.
As NASA readies itself for new space exploration initiatives starting with a human return to the Moon by the year 2020 eventually leading to human exploration of Mars, the requirements for a safe and reliable power system will become important issues. A preliminary study of a proposed hybrid AC/DC distribution system with a power electronic interface is investigated. A static synchronous compensator...
The b-spline neural net is a convenient tool to execute the power system voltage control, with the possibility of carrying out such task on-line. The controller's design simplicity and its performance compared with the conventional PI controller are shown, specially those related with the overshoots and control signals quality, impacting directly into the controlled variable response and having quieter...
Due to the increasing extension of power grids and decentralization of power generation, the need for control and compensation is more and more increasing. The intensive use of modern power electronics in FACTS elements can provide a feasible solution. Especially STATCOM and UPFC, for their versatile application can be the method of choice. Voltage sourced converters with IGBTs are used for compensation,...
This paper is aimed to the inclusion of the static compensator (StatCom) into a grid with the purpose of improving its voltage stability margins. An abc three-phase formulation is employed. To validate the results, steady state and dynamic studies are carried out onto different power system
Flexible AC transmission systems (FACTS) devices are power electronics based shunt or series devices that are connected to the power network and can improve the system performance and the quality of supply. Application of three types of FACTS devices, a STATCOM, a SCRC and a UPFC, is studied in a 45 bus multimachine power system, as part of the Brazilian power system. The system is exposed to various...
This paper explores using modular power electronics building blocks (PEBBs) in building power electronics based controllers for utility systems applications. The analysis of the existing and proposed controller functions identifies three basic PEBB converter functions for power system controllers: bidirectional AC switch, bidirectional AC/DC voltage source converter, and DC/DC converter. A hierarchical...
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