Harmonic suppression and simulation based on matlab

An active power filter (APF)based on digital signal processor (DSP) and complicated programming logic component (CPLD) is designed in this paper. Solft and hard wares are introduced and the simulation experiment to compensate the reactive power and harmonics in three-phase four-wires system is done. By using Matlab. simulation model is build for the device. The result shows that this model can …

Realibility of lumped parameter modeling of pressure changes in geothermal re…

Edisi

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ISBN/ISSN

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Deskripsi Fisik

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Judul Seri

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No. Panggil

620 AXE r

Numerical modeling of transient basin and range extensional geothermal systems

A suite of models utilizing a simplified structural framework with a range of bulk rock permeabilities were developed to analyze the transient behavior of Basin and Range extensional geothermal systems, and particularly, the evolution of the system temperature with time. Each model consists of two mountain ranges (∼1 km relief from the valley floor) separated by a thick sequence (about 4 km) …

Enhanced geothermal systems (EGS) using CO2 as working fluid-a novel approach…

Responding to the need to reduce atmospheric emissions of carbon dioxide, Brown [Brown, D., 2000. A Hot Dry Rock geothermal energy concept utilizing supercritical CO2 instead of water. In: Proceedings of the Twenty-Fifth Workshop on Geothermal Reservoir Engineering, Stanford University, pp. 233–238] proposed a novel enhanced geothermal systems (EGS) concept that would use carbon dioxide (CO2)…

Simple and advanced methods for calculating six-pulse diode rectifier line-si…

This paper proposes different methods for estimation of the harmonic currents of the six-pulse diode rectifier, which is a very commonly used topology in industry. Both simple and advanced models are compared and the models are put into a context of practical use for calculating the harmonic distortion in a typical industrial application. Finally, the different models are compared to measuremen…

Modeling and simulation of 6-Pulse rectifier drives with impacts to input cur…

This paper describes the measurements and simulations of harmonics from six pulse adjustable speed drives in Pulp and paper Industry. Harmonic analysis of the distribution system is essential to study the behavior of equipments connected in the non-sinusoidal system environment for designing and optimal location of filters. The simulations are done in Mat lab by sim-link circuit simulator. Vali…

Harmonic modeling and simulation requirements for the revised IEEE standard 5…

Abstract: As IEEE Standard 519-1992 enters its final revision stages for a new release, it is becoming clear that new and improved modeling and simulation techniques are required to address various technologies and control systems that were not considered in the 1992 version. Probably the single largest issue is the emergence of "active rectifier" AC-DC converters. However, other modeling and …

Test systems for harmonics modeling and simulation

This paper presents three harmonic simulation test systems. The purpose is to demonstrate guidelines for the preparation and analysis of harmonic problems through case studies and simulation examples. The systems can also be used as benchmark systems for the development of new harmonic simulation methods and for the evaluation of existing harmonic analysis software.

Modeling the single tuned passive harmonic filter based on the fractional cal…

In this paper, the fractional characteristics of capacitor and inductor are considered, and the single tuned passive harmonic filter is modeled and analyzed based on the fractional calculus. The fractional-order mathematical model of the single tuned passive harmonic filter is given. The difference between the integer model and the fractional model is revealed. In the fractional model the reson…

Software for the evaluation of winding factor harmonic distribution in high e…

In this paper a software developed for the determination of winding connections, the calculation of winding factors and the evaluation of their harmonic distribution of three and two phase windings is presented by using as input data simply the number of slots, pole pairs and phases. The software is implemented as a function in MATLAB environment. By means of some examples, covering the most re…