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28,593 Article Results

Selection of Appropriate Semiconductor Switches for Induction Heated Pipe-Line using High Frequency Full Bridge Inverter

https://ijpeds.iaescore.com/index.php/IJPEDS/article/view/5044
Pradip Kumar Sadhu , Debabrata Roy , Nitai Pal , Sourish Sanyal
An exhaustive method for the choice of different power semiconductor switches for high frequency full bridge inverter fed induction heater is presented. Heating coil of the induction heater is made of litz wire which minimises the skin effect and proximity effect at high operating frequency. With the calculated optimum values of inductance and resistance of heating coil at a particular operating frequency, high frequency full bridge inverter topology has been simulated using P-SIM software as well as constructing the experimental model of same rating. Obtained the voltage waveforms across heating coil and current waveforms through it, have been taken for further analysis. From this analysis selection of suitable power semiconductor switches like IGBT, GTO and MOSFET are made. Waveforms have been shown to justify the feasibility for real implementation of high frequency full bridge inverter fed induction heater in industrial applications.DOI: http://dx.doi.org/10.11591/ijpeds.v5i1.6108
Volume: 5
Issue: 1
Page: 112-118
Publish at: 2014-07-24

A Three Phase Multi Level Converter For grid Connected PV System

https://ijpeds.iaescore.com/index.php/IJPEDS/article/view/5039
S. Srikanth
Photovoltaic energy is a wide kind of green energy. A high performance on these systems is needed to make the most of energy produced by solar cells. Also, there must be a constant adaptation due to the continuous variation of power production. Control techniques for Power Converters like the MPPT algorithm (Maximum Power Point Tracking) present very good results on photovoltaic chains. Nevertheless, losses on power elements reduce global performance and the voltage/current adaptation is not always possible.  This paper presents a single-phase 11-level (5 H-bridges) cascade multilevel DC-AC grid-tied inverter. Each inverter bridge is connected to a 200 W solar panel. OPAL-RT lab was used as the hardware in the loop (HIL) real-time control system platform where a Maximum Power Point Tracking (MPPT) algorithm was implemented based on the inverter output power to assure optimal operation of the inverter when connected to the power grid as well as a Phase Locked Loop (PLL) for phase and frequency match. A novel SPWM scheme is proposed in this paper to be used with the solar panels that can account for voltage profile fluctuations among the panels during the day. Simulation and experimental results are shown for voltage and current during synchronization mode and power transferring mode to validate the methodology for grid connection of renewable resources.DOI: http://dx.doi.org/10.11591/ijpeds.v5i1.6156
Volume: 5
Issue: 1
Page: 71-75
Publish at: 2014-07-15

A New Multilevel Inverter with Reduced Number of Switches

https://ijpeds.iaescore.com/index.php/IJPEDS/article/view/5038
Gnana Prakash , Balamurugan M , Umashankar S
In recent day’s Multilevel inverter (MLI) technologies become a incredibly main choice in the area of high power medium voltage energy control. Though multilevel inverter has a number of advantages it has drawbacks in the vein of higher levels because of using more number of semiconductor switches. This may leads to vast size and price of the inverter is very high. So in order to overcome this problem the new multilevel inverter is proposed with reduced number of switches. The proposed method is well suited for a high power application and it built with three Dc sources and six Switches. Multi carrier pwm technique is used for sine wave generation. The results are validated through the harmonic spectrum of the FFT window by using Matlab/simulink. The result of the proposed MLI is compared with the conventional MLI and other seven level existing topologies.DOI: http://dx.doi.org/10.11591/ijpeds.v5i1.6089
Volume: 5
Issue: 1
Page: 63-70
Publish at: 2014-07-15

ZVZCS Based High Frequency Link Grid Connected SVM applied Three Phase Three Level Diode Clamped Inverter for Photovoltaic Applications Part-II

https://ijpeds.iaescore.com/index.php/IJPEDS/article/view/5034
Soumyadeep Ray , Madichetty Sreedhar , Abhijit Dasgupta
This article proposes a newly proposed highly effective Zero Voltage and Zero Current switching based Front end converter with a High Frequency Transformer with a Three Phase Three Level Diode Clamped Inverter in photovoltaic applications. The switching scheme is implemented in MATLAB/ Simulink condition. ZVZCS condition is achieved. This type of converter shows high efficiency and very negligible switching loss. Finally ZVZCS based High Frequency Link Diode Clamped Inverter is connected to Grid. An MCI optimized Current controller is used with SVM switching technique.  In This article, responses with three types of controllers (I, PI, PID) have been examined and compared. Simulation results show the effectiveness, and validity of this technique.DOI: http://dx.doi.org/10.11591/ijpeds.v5i1.5411
Volume: 5
Issue: 1
Page: 24-31
Publish at: 2014-07-15

A Novel Topology Of Multilevel Inverter With Reduced Number Of Switches And DC Sources

https://ijpeds.iaescore.com/index.php/IJPEDS/article/view/5037
Nakul Thombre , Priyanka Rana , Ratika Singh Rawat , Umashankar S
This paper introduces new topology of cascaded multilevel inverter, with considerable reduction in the number of switches and DC voltage sources. The proposed topology is based on asymmetrical multilevel inverter which produces 21 levels of output with the use of 11 unidirectional switches, 3 diodes and 4 DC voltage sources. The advantages of this topology are reduction in the number of switches (2 nos.) and gate driver circuits (2 nos.), reduction in the number of DC sources (2 nos.) also cost, complexity, and space required for hardware is reduced  without sacrificing the quality output of the inverter. To reduce the THD further Level shifting SPWM techniques such as PD, POD & APOD are used and comparison is shown on the basis of THDs obtained from the above SPWM techniques. Frequency of carrier waves is 1KHz, and modulation index is 1.0. To validate the proposed topology the circuit is simulated and verified by using MATLAB/Simulink.DOI: http://dx.doi.org/10.11591/ijpeds.v5i1.5810
Volume: 5
Issue: 1
Page: 56-62
Publish at: 2014-07-15

Concurrent Detection and Classification of Faults in Matrix Converter using Trans-Conductance

https://ijpeds.iaescore.com/index.php/IJPEDS/article/view/5042
Sarah Azimi , Mehdi Vejdaniamiri
This paper presents a fault diagnostic algorithm for detecting and locating open-circuit and short-circiut faults in switching components of matrix converters (MCs) which can be effectively used to drive a permanent magnet synchronous motor for research in critical applications. The proposed method is based on monitoring the voltages and currents of the switches. These measurements are used to evaluate the forward trans-conductance of each transistor for different values of switch voltages. These trans-conductance values are then compared to the nominal values. Under healthy conditions, the values obtained for the fault signal is less than the tolerable value. Under the open/short-circuit conditions, the fault signal exceeds the threshold, hence enables the matrix converter drive to detect and exactly identify the location of the faulty IGBT. The main advantages of this diagnostic method include fast detection and locating of the faulty IGBT, easiness of implementation and independency of the modulation strategy of the converter.DOI: http://dx.doi.org/10.11591/ijpeds.v5i1.6065
Volume: 5
Issue: 1
Page: 93-100
Publish at: 2014-07-15

Comparative Analysis of PWM Techniques for Three Level Diode Clamped Voltage Source Inverter

https://ijpeds.iaescore.com/index.php/IJPEDS/article/view/5033
Zulkifilie Bin Ibrahim , Md. Liton Hossain , Ismadi Bin Bugis , Jurifa Mat Lazi , Nurazlin Mohd Yaakop
Multilevel inverters are increasingly being used in high-power medium voltage industrial drive applications due to their superior performance compared to conventional two-level inverters. Thre are a number of Pulse width modulation (PWM) techniques applied in recent years. The most widely applied PWM techniques are Sine Pulse Width Modulation (SPWM) and Space Vector Pulse Width Modulation (SVPWM).  SPWM is the most simple modulation technique that can realize easily in analog circuit.  However, it has some drawbacks such as higher total harmonic distortion (THD), lower effective DC utilization and lower switching frequency. Space vector pulse width modulation (SVPWM) is widely used because of their easier digital realization and better DC bus utilization and lower THD. The complexity is due to the difficulty in determining the reference vector location, on times calculation, and switching states selection. This paper presents a simple SVPWM algorithm for diode clamped three level inverters based on standard two-level SVPWM which can easily determine the location of reference vector, calculate the on-times, the selection of switching states. Three level diode clamped inverter (3LDCI) using space vector modulation technique has been modeled and simulated using MATLAB/SIMULINK and Origin 6.1 with a passive R-L load that can be extended to any level. Simulation results are presented to verify the proposed SVPWM control in terms of THD. The results are compared with conventional sinusoidal pulse width modulation (SPWM) where SVPWM shows better performance than SPWM in terms of THD.DOI: http://dx.doi.org/10.11591/ijpeds.v5i1.6038
Volume: 5
Issue: 1
Page: 15-23
Publish at: 2014-07-15

Design of New Single-phase Multilevel Voltage Source Inverter

https://ijpeds.iaescore.com/index.php/IJPEDS/article/view/5036
Rasoul Shalchi Alishah , Daryoosh Nazarpour , Seyyed Hossein Hosseini , Mehran Sabahi
Multilevel inverters with more number of levels can produce high quality voltage waveforms. In this paper, a new single-phase structure for multilevel voltage source inverter is proposed which can generate a large number of levels with reduced number of IGBTs, gate driver circuits and diodes. Three algorithms for determination of dc voltage sources’ magnitudes are presented which provide odd and even levels at the output voltage waveform. A comparison is presented between proposed multilevel inverter and conventional cascade topology. The proposed topology is analyzed by the experimental and simulation results.DOI: http://dx.doi.org/10.11591/ijpeds.v5i1.6218
Volume: 5
Issue: 1
Page: 45-55
Publish at: 2014-07-15

Open Loop and Closed Loop Performance of Switched Reluctance Motor with Various Converter Topologies

https://ijpeds.iaescore.com/index.php/IJPEDS/article/view/5041
Malligunta Kiran Kumar , G.R.K. Murthy , S S Srinivas.Addala
Switched reluctance motor (SRM) is becoming popular because of its simple construction, robustness and low-maintenance. This motor is very useful for high speed applications because no windings are placed on rotor and can also be used for variable speed applications in industries. Converter is one of the important elements in SRM which plays a very crucial role. In this paper various converter topologies for 6/4 switched reluctance motor and Asymmetric bridge converter topology for 8/6 switched reluctance motor are discussed. Finally a closed loop for each converter topology is proposed. The converter topologies are simulated by using MATLAB/SIMULINK. Constant speed is achieved in closed loop control.DOI: http://dx.doi.org/10.11591/ijpeds.v5i1.6133
Volume: 5
Issue: 1
Page: 83-92
Publish at: 2014-07-15

Modeling and Simulation of a Carrier-based PWM Voltage Source Inverter for a Nine Phase Induction Machine Drive

https://ijpeds.iaescore.com/index.php/IJPEDS/article/view/5032
Omonowo David Momoh
The analysis of a carrier-based PWM two level voltage source inverter for a nine phase induction machine drive system is presented in this paper. Methods for generating zero-sequence signals during balanced and unbalanced condition are established. Simulation results for the analysis are presented. Two fault conditions involving the voltage source inverter and the nine-phase squirrel cage induction machine load are investigated. For the two fault scenarios considered, the effects on the performance characteristics of the induction machine load are highlighted. The simulation results obtained show that the two imbalance conditions considered result in substantial oscillations on the electromagnetic torque of the machine with attendant reduction in the torque rating. There is also large slip in the rotor speed.DOI: http://dx.doi.org/10.11591/ijpeds.v5i1.6175
Volume: 5
Issue: 1
Page: 1-14
Publish at: 2014-07-15

Harmonic Analysis of Seven and Nine Level Cascade Multilevel Inverter using Multi-Carrier PWM Technique

https://ijpeds.iaescore.com/index.php/IJPEDS/article/view/5040
Chetanya Gupta , Devbrat Kuanr , Abhishek Varshney , Tahir Khurshaid , Kapil Dev Singh
The use of multilevel inverters has become popular in recent years for high-power applications. Multilevel Inverters are power converter systems composed by an array of power semiconductor sources that when properly connected and controlled can generate a multistep voltage waveform with variable and controllable frequency, phase and amplitude. This study deals with the comparison of a 7-level inverter with a 9-level inverter system; the voltage source inverters (VSI) are modelled and simulated using MATLAB Simulink and the results are presented. The test results verify the effectiveness of the proposed strategy in terms of computational efficiency as well as the capability of the inverter to produce very low distorted voltage with low-switching losses. This research aims to extend the knowledge about the performance of different clamped multilevel inverter through harmonic analysis. Simulations results validate up to the mark performance of the mentioned topologies.DOI: http://dx.doi.org/10.11591/ijpeds.v5i1.6190
Volume: 5
Issue: 1
Page: 76-82
Publish at: 2014-07-15

The Method for Measuring Loop Resistance in Gas Insulated Substation

10.11591/ijeecs.v12.i10.pp7092-7098
Li Zhou , Tiecheng Lu , Bo Zhang , Guangkai Yu , Jiawei Wan
This paper studies the method for measuring the loop resistance of GIS conductor pole basing on the super capacitor producing impulse current up to several thousand amperes. This method overcomes the limitations of conventional diagnostic method. Typical GIS conductor poles are chosen. Based on FEA and lab tests, the effect of different forms of current and contact condition, relationship between the temperature of contact and the loop resistance is researched. In full-scale testing under realistic operating conditions on the new 220 kV GIS using prototype instrumentation a very good sensitivity in an early stage was obtained.
Volume: 12
Issue: 10
Page: 7092-7098
Publish at: 2014-07-05

A Coal Mine Security Production Dispatching System with Web Configuration Technology

10.11591/ijeecs.v12.i10.pp7070-7075
Hui Liu , Qiu Junlin , Zhou Caiying , Shi Zhe
Coal mine security production dispatching system with web configuration technology is an advanced information system that integrates Internet, Database, XML and Web configuration technology. The system combines organically information of real-time data of coal mine safety monitoring and production scheduling, and digitizes it and finally discloses solution Visual Graph via ActiveX-based components of Web configuration to achieve standardization, normalization, and high efficiency of coal mine safety production scheduling. This system has been successfully utilized in coal mine for two years and achieved expected success of providing fresh, quantitative, and truthful production scheduling information for safety production scheduling and management department.
Volume: 12
Issue: 10
Page: 7070-7075
Publish at: 2014-07-05

Model Construction and Simulation of Weighted Industrial Cluster Complex Network

10.11591/ijeecs.v12.i10.pp7330-7336
Lijun Wang , Lei Wen
In this paper, we construct a weighted industrial cluster complex network model according to preferential attachment and local world mechanism, in which the logistics amount of business contact between one enterprise and others is defined as edge weight. We simulate and analyze statistic characteristics of the industrial cluster model such as degree distribution, point strength, point strength-point strength correlation, and relationship with degree and point strength. The simulation results show that the degree and point strength distribution are accord with power law distribution, the point strength-point strength correlation is negative, and the relationship with degree and point strength is strongly linear.
Volume: 12
Issue: 10
Page: 7330-7336
Publish at: 2014-07-05

Design and Simulation Low Voltage Single-Phase Transformerless Photovoltaic Inverter

10.11591/ijeecs.v12.i7.pp5163-5173
Rajendra R Aparnathi , Ved Vyas Dwivedi
The last Deckard years developing Inverter technology for renewable energy and high efficiency and more improvement solar and wind power plant. Transformer less inverter technology is best and improves efficiency, power quality and reduces switching loss. single-phase grid connected transformerless photovoltaic (PV) inverter for residential application is presented. The inverter is derived from a boost cascaded with buck converter along with a line frequency unfolding circuitIn this research paper transformer less photovoltaic (PV) inverter is going to be more adopted in order to achieve high benefit.  The selected inverters are the full-bridge inverter with bipolar modulation, full-bridge inverter with DC bypass and the Highly Efficient and Reliable Inverter Concept (HERIC). A low voltage single-phase grid-connected PV system is analyzed to verify the discussions.
Volume: 12
Issue: 7
Page: 5163-5173
Publish at: 2014-07-01
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