Harmonic Analysis and Simulation of Medium Frequency Furnace

2013 ◽  
Vol 448-453 ◽  
pp. 2153-2157
Author(s):  
Tian Ran Li ◽  
Liang Ying ◽  
Lin Sun
Keyword(s):  
Simulation Model ◽  
Harmonic Analysis ◽  
Basic Structure ◽  
Model Potential ◽  
Steel Plant ◽  
Medium Frequency ◽  
Matlab Simulink ◽  
Harmonic Currents ◽  
Harmonic Pollution ◽  
Potential Harmonic

Basic structure and operational principle of medium frequency furnace (MFF) are introduced in this paper. The characteristics of harmonic currents produced by MFF are analyzed theoretically. A harmonic analysis simulation model for MFF with 12-pulse reciter based on Matlab/Simulink is presented. The validity of it is proved for the simulation harmonic currents accord to the theoretical anticipation. This model could be used to predict the harmonic of MFF not in operation. Based on this model, potential harmonic pollution of a new steel plant is studied by simulation with Matlab/ Simulink.

Study on the Steering Performance of Dual-Motor Drive Track Bulldozer

2013 ◽  
Vol 427-429 ◽  
pp. 133-136
Author(s):  
Qiang Song ◽  
Pu Zeng
Keyword(s):  
Simulation Model ◽  
Dynamic Characteristics ◽  
Driving Force ◽  
Driving Forces ◽  
Small Radius ◽  
Motor Drive ◽  
Matlab Simulink ◽  
Simulation Results ◽  
Two Sides

The driving theory and the dynamic characteristics of small radius steering, medium radius steering and big radius steering is analyzed, and the simulation model is established under Matlab/Simulink. Then the track bulldozers steering performance of the three sheerings is simulated. The results show that, at different steering modes, the running states of the two sides driving motors are not the same, and the track driving forces of the two sides vary widely. The track driving force is great in the small radius steering model, while small in the medium and big radius steering models. The simulation results lay the foundation for dual-motor drive track bulldozers steering performance matching.

scholarly journals Modeling and analysis of the characteristics of SiC MOSFET

2021 ◽  
Vol 2125 (1) ◽  
pp. 012051
Author(s):  
Guoqing Qiu ◽  
Kedi Jiang ◽  
Shengyou Xu ◽  
Xin Yang ◽  
Wei Wang
Keyword(s):  
Simulation Model ◽  
Circuit Simulation ◽  
Power Conversion ◽  
Simulation Models ◽  
Data Sheet ◽  
Superior Performance ◽  
Power Devices ◽  
Matlab Simulink ◽  
Modeling And Analysis ◽  
Mathematical Processing

Abstract Although the superior performance of SiC MOSFET devices has beenvalidated by many studies, it is necessary to overcome many technical bottlenecks to make SiC MOSFET gradually replace Si-based power devices into the mainstream. In view of the current situation where the performance of SiC MOSFETs in power conversion devices cannot be evaluated well at this stage, it is necessary to carry out fine modeling of SiC MOSFETs and establish accurate simulation models. In this paper, the powerful mathematical processing capability and rich modules of Matlab/Simulink are used to build a SiC MOSFET model, and then the product data sheet is compared with the fitted data. The results show that the switching simulation waveforms are in general agreement with the data sheet waveforms, and the error is less than 7%. Verifing the accuracy of the model and reducing the difficulty of modeling, it provides a new idea for establishing the circuit simulation model of SiC MOSFET in Matlab/Simulink.

Development of simulation system to combine production process and wastewater treatment: calibration of bleached kraft process model through dissolved organic matter in fibreline

1997 ◽  
Vol 35 (2-3) ◽  
pp. 15-23
Author(s):  
Antero Luonsi ◽  
Sakari Halttunen
Keyword(s):  
Organic Matter ◽  
Dissolved Organic Matter ◽  
Simulation Model ◽  
Production Process ◽  
Pollution Prevention ◽  
Basic Structure ◽  
Complete Degradation ◽  
Kraft Process ◽  
Degree Of Oxidation ◽  
Activated Sludge Processes

Simulation models for bleached kraft and activated sludge processes are being developed to be used simultaneously for integrated pollution prevention and control (IPPC). In this paper, only the simulation model (modified PROCELL) calibration for bleached kraft process is discussed. The simulation model was calibrated with dissolved organic matter (DOM) using dissolved volatile solids (DVS) values and operational information of a mill. Calibrated DOM in carryover and filtrate throughout the fibreline differed by 10% or less from the measured values in the mill. Complete degradation of DOM to inorganics within the production process is required to make the organic matter balance complete. In the calibrated fibreline, complete degradation of DOM proved to be of the same magnitude as the DOM load from bleaching filtrates (D0 and E1). Complete balance evaluation facilitates the control of the fate of DOM. Data analyzing procedure was developed to determine the basic structure of the DOM (CaHbONc). The information of conventional analyses of DOM such as organic carbon (DOC), DVS and chemical oxygen demand (DCODCr) was developed to elucidate the basic structure of DOM. The degree of oxidation is one feature derived from the structure of DOM. The degree of oxidation seemed to be less in the filtrate than in the carryover in the alkaline stages, while the reverse was occurred in the acid stages.

Simulation Research of Hydraulic Powerplant Mount Based on Matlab/Simulink

2014 ◽  
Vol 494-495 ◽  
pp. 180-183
Author(s):  
Min Yuan ◽  
Chong Chen ◽  
Pin Gan Cui
Keyword(s):  
Mathematical Model ◽  
Simulation Model ◽  
Mechanical Model ◽  
Simulation Research ◽  
Matlab Simulink

Firstly mechanical model of hydraulic powerplant is established. Then mathematical model of hydraulic powerplant mount is established based on the analysis of mechanical model. And the simulation model is established in Matlab/Simulink. The results of simulation are attained by calculation. On the basis of aforementioned results, the analysis is made. Finally, this paper makes a summary and outlook.

PROBABILISTIC HARMONIC ANALYSIS OF WIND GENERATORS BASED ON GENERALIZED GAMMA MIXTURE MODELS

2012 ◽  
Vol 27 (03) ◽  
pp. 1350020 ◽  
Author(s):  
GUANGLONG XIE ◽  
BUHAN ZHANG
Keyword(s):  
Harmonic Analysis ◽  
Mixture Models ◽  
Power Quality ◽  
Gaussian Mixture Models ◽  
Gaussian Mixture ◽  
Probability Density Functions ◽  
Density Functions ◽  
Generalized Gamma ◽  
Wind Generators ◽  
Harmonic Currents

Grid-connected wind generators pose the power quality problems such as harmonic propagation and summation, and these problems are hard to solve by deterministic harmonic analysis due to the random harmonic current emissions. In this paper, probabilistic harmonic analysis is utilized to approximate harmonic currents of wind generators. Generalized gamma mixture models based on Gaussian mixture models, phasor clustering and generalized gamma models, are proposed to approximate the probability density functions of harmonic propagation and summation. And the simulation network built on PSCAD/EMTDC is utilized to verify the proposed models and method.

scholarly journals Modelling and Simulation of Machine Tool Prototype with 6DOF Parallel Mechanism in Matlab / Simulink

2019 ◽  
Vol 254 ◽  
pp. 03002 ◽  
Author(s):  
Vladimír Bulej ◽  
Juraj Uríček ◽  
Manfred Eberth ◽  
Ivan Kuric ◽  
Ján Stanček
Keyword(s):  
Machine Tool ◽  
Simulation Model ◽  
Mechanical System ◽  
Parallel Mechanism ◽  
Control Algorithms ◽  
Kinematic Structure ◽  
Matlab Simulink ◽  
Parallel Kinematic ◽  
Functional Blocks ◽  
Functional Prototype

The article deals with the preparation of simulation model of mechanism with parallel kinematic structure called hexapod as an electro-mechanical system in software MATLAB/Simulink. The simulation model is composed from functional blocks represented each part of mechanism’s kinematic structure with certain properties. The results should be used for further simulation of its behaviour as well as for generating of control algorithms for real functional prototype.

Simulation Modelling of a Pulse Frequency-Phase Discriminator

2015 ◽  
Vol 792 ◽  
pp. 95-100 ◽  
Author(s):  
Igor S. Bolgov ◽  
Yuriy N. Dementyev ◽  
Veronika A. Bolgova
Keyword(s):  
Simulation Model ◽  
Simulation Modelling ◽  
Pulse Frequency ◽  
Matlab Simulink ◽  
Application Package ◽  
Simulation Results ◽  
Frequency Phase ◽  
Phase Discriminator

A simulation model of a pulse frequency-phase discriminator (PFPD) in the Matlab Simulink application package was developed. The main PFPD modes simulation and the analysis results were carried out. The simulation results are discussed in this paper.

scholarly journals Mitigation of Harmonics in Power Transmission Network using Filters

2020 ◽  
Vol 9 (1) ◽  
pp. 1283-1288
Keyword(s):  
Power System ◽  
Harmonic Analysis ◽  
Power Quality ◽  
Power Transmission ◽  
Flow Analysis ◽  
Electric Utility ◽  
Load Flow ◽  
Optimal Placement ◽  
Harmonic Currents ◽  
Mitigation Techniques

In the novel times, with the surge in use of power electronics, power quality with system efficiency is playing a symbolic role for the advancement of electric supply. The fundamental purpose of the electric utility is to provide a sinusoidal voltage at constant magnitude throughout the system. This objective is convoluted because of the loads present in the system which produce harmonic currents. Due to these harmonic currents, distorted voltages and currents are carried out which affect the reliability and efficiency of the system in several ways. The sinusoidal waveform produced by electric utilities is distorted due to harmonics and increased use of non-linear loads. The deterioration of the power quality and reliability of the power system is due to the presence of these harmonics in the power system. Hence, we need a proper analytical approach to study, classify and characterize the harmonics present in the system and develop a suitable and effective mitigation method to reduce the harmonics in the power system to standard limits of harmonics prescribed by the IEEE and IEC standards. The study of the level of harmonics present in the system, their causes and effects are known as harmonic analysis or harmonics study. Based on the observations of harmonic analysis we develop mitigation techniques to reduce these harmonics. One such method is the implementation of filters. By implementing harmonic filters, we mitigate the harmonics present in the system by providing a low impedance path. The methodological procedure behind effective design and implementation of filters is achieved by performing load flow analysis to obtain the system data and harmonic analysis to obtain data of harmonics present in the system. Based on the data obtained, the type of filter and the optimal placement of filter is decided to mitigate the harmonics. The mitigation of harmonics can report significant benefits for industries, data centers, etc. in terms of overall installation cost and protection against interruptions and equipment faults in the power system. The overall process of Harmonic analysis and mitigation techniques are performed using Mi-Power software.

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