Modular Multilevel Cascade Converter (mmcc) Based Statcom for Improvement Power Quality
ثبت نشده
چکیده
The objective of the paper is the application of modular multilevel cascade converter based on double star bridge cells (DSBCs) to a Static synchronous Compensator (STATCOM), for reactive-power control. The power consumed by the heavy load will create an unsymmetrical current will reducing the quality of the power in the electrical grid. Due to the unsymmetrical current the electrical power in the grid will not be stabilized .The Static synchronous compensator is a shunt compensation device based on the principle of power electronics. Recent development of FACTS devices provides the reliable solution to potential problems. A modular multilevel cascaded converter (MMCC) will be even designed by four methods to compensation the reactive power. Multilevel converter based FACTS offers improved voltage quality, decreased switching frequency and stress on individual power electronic devices. The PWM STATCOM based double star bridge converter (DSBC) is used to control reactive power with the help of circulating current that flows the inside the bridge converter. KeywordsMultilevel converters, Reactive power, Flicker
منابع مشابه
ENERGY AND VOLTAGE MANAGEMENT METHODS FOR MULTILEVEL CONVERTERS FOR BULK POWER SYSTEM POWER QUALITY IMPROVEMENT by
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.
متن کاملControl of Modular Multilevel Converters Using an Overlapping Multi- Hexagon Space Vector Modulation Scheme
Adapting the conventional Space Vector modulation (SVM) scheme for modular multilevel cascaded converters is complicated as the number of switching vectors increases with the number of voltage levels. This paper introduces a novel SVM scheme that can be applied for the control of modular multilevel cascade converters (MMCC) with any number of levels. Instead of extending a single hexagon to the...
متن کاملA Direct Power Feeding System for AC Railway Networks Using Modular Multilevel Converter
Abstract Traditional railway power supply systems impose substantial power quality problems (PQ) on the utility network, such as unbalance, harmonics and a large amount of reactive power. This paper proposes a topology based on three-phase to single-phase modular multilevel converters (MMC) to obviate these problems. The MMC based traction substations (TSS) are connected directly to the utili...
متن کاملPower Quality Improvement Using Cascaded Multilevel Statcom with Dc Voltage Control
The “multilevel converter” has drawn tremendous interest in the power industry. The general structure of the multilevel converter is to synthesize a sinusoidal voltage from several levels of voltages, Multilevel voltage source converters are emerging as a new breed of power converter options for high power applications, These converter topologies can generate high-quality voltage waveforms with...
متن کاملPerformance Evaluation of Adjustable Speed Drives Using Multilevel Inverter Based STATCOM
Adjustable speed drives (ASD) employing induction motors are widely used in the industrials and process control in the form of varied applications such as fans, compressors, pumps etc. They are energy efficient and can result in substantial energy saving when properly installed. However, they inject high harmonic content into current drawn from the ac system. This paper deals with the applicati...
متن کامل