Open Access. Powered by Scholars. Published by Universities.®

Engineering Commons

Open Access. Powered by Scholars. Published by Universities.®

Electrical and Computer Engineering

SelectedWorks

Keyword
Publication Year
Publication
File Type

Articles 1 - 30 of 587

Full-Text Articles in Engineering

Inventing Around Edison’S Lamp Patent: The Role Of Patents In Stimulating Downstream Development And Competition, Ron D. Katznelson, John Howells Feb 2018

Inventing Around Edison’S Lamp Patent: The Role Of Patents In Stimulating Downstream Development And Competition, Ron D. Katznelson, John Howells

Ron D. Katznelson

We provide the first detailed empirical study of inventing around patent claims. The enforcement of Edison’s incandescent lamp patent in 1891-1894 stimulated a surge of patenting. Most of these later patents disclosed inventions around the Edison patent. Some of these patents introduced important new technology in their own right and became prior art for new fields, indicating that invention around patents contributes to dynamic efficiency. Contrary to widespread contemporary understanding, the Edison lamp patent did not suppress technological advance in electric lighting. The market position of General Electric (“GE”), the Edison patent-owner, weakened through the period of this patent’s enforcement.


دینامیک سیستم های قدرت, Hadi Zayandehroodi May 2017

دینامیک سیستم های قدرت, Hadi Zayandehroodi

Dr. Hadi Zayandehroodi

No abstract provided.


دینامیک سیستم های قدرت- بخش چهارم, Hadi Zayandehroodi Dec 2016

دینامیک سیستم های قدرت- بخش چهارم, Hadi Zayandehroodi

Dr. Hadi Zayandehroodi

No abstract provided.


حفاظت پیشرفته سیستم های قدرت, Hadi Zayandehroodi Jun 2016

حفاظت پیشرفته سیستم های قدرت, Hadi Zayandehroodi

Dr. Hadi Zayandehroodi

این جزوه برای استفاده دانشجویان رشته برق قدرت طراحی شده است و دانشجویان در کلیه مقاطع می توانند ازمباحث این جزوه بهره مند گردند


Step-By-Step Check Response Of Pv Module Modeling Tested By Two Selected Power Reference Modules, A. M. Soliman,, K. Abdel-Aty Dec 2015

Step-By-Step Check Response Of Pv Module Modeling Tested By Two Selected Power Reference Modules, A. M. Soliman,, K. Abdel-Aty

Innovative Research Publications IRP India

Photovoltaic (PV) systems are becoming nowadays an attractive solution to overcome energy demands and pollution reduction. Several issues under research such as PV MPPT, PV Distributed generation, PV On-Grid systems, and PV off Grid systems need a modeling of PV module as an important initial step in these researches. This paper presents a mathematical model of a PV module using Matlab which this model was checked in response step by step to be guidance for researchers understanding in these areas. In the mean time, the modeling final results are compared by two different commercial reference models for verification purpose which …


Section 41- کیفیت توان- Course, Asadollah Kazemi Nov 2015

Section 41- کیفیت توان- Course, Asadollah Kazemi

Dr. ASADOLLAH KAZEMI

No abstract provided.


Section 3-Renewable Energy Cource, Asadollah Kazemi Nov 2015

Section 3-Renewable Energy Cource, Asadollah Kazemi

Dr. ASADOLLAH KAZEMI

No abstract provided.


کیفیت توان- بخش هارمونیک, Asadollah Kazemi Nov 2015

کیفیت توان- بخش هارمونیک, Asadollah Kazemi

Dr. ASADOLLAH KAZEMI

No abstract provided.


Control Method For Dc-Dc Boost Converter Based On Inductor Current, Van Bao Chau Nov 2015

Control Method For Dc-Dc Boost Converter Based On Inductor Current, Van Bao Chau

Innovative Research Publications IRP India

This paper introduces a new control method for DC-DC Boost converter that is the control method based on inductor current on the basis of balance of power. The simulation results have proven to be that: proposed control method ensured the accuracy and output voltage ripple is within the required limit.


Pulse Width Modulated Ac Voltage Controller Filter Design By Optimization Technique, N. Murali,, Dr.V. Balaji Nov 2015

Pulse Width Modulated Ac Voltage Controller Filter Design By Optimization Technique, N. Murali,, Dr.V. Balaji

Innovative Research Publications IRP India

The AC voltage controller plays a vital role in many of the industries. In this paper the multiple pulse width modulated AC voltage controllers is designed for analyzing the different loads. The performance of AC voltage controller is analyzed with and without filter. The performance parameters are output voltage and total harmonic distortion. The performance analysis is done for pulse width modulated AC voltage controller with resistive load and combination of resistive and inductive load. The design of passive filter components is obtained using particle swarm bacterial foraging optimization technique. The effect of filter requirements is analyzed using the Matlab …


Section 2-Pdf- Renewable Energy Cource, Asadollah Kazemi Oct 2015

Section 2-Pdf- Renewable Energy Cource, Asadollah Kazemi

Dr. ASADOLLAH KAZEMI

No abstract provided.


Section 22- کیفیت توان- Course, Asadollah Kazemi Oct 2015

Section 22- کیفیت توان- Course, Asadollah Kazemi

Dr. ASADOLLAH KAZEMI

No abstract provided.


Science Behind The Magnetic Field Therapy, D. B. Thombre,, Megha D. Thombre Oct 2015

Science Behind The Magnetic Field Therapy, D. B. Thombre,, Megha D. Thombre

Innovative Research Publications IRP India

Magnetic therapy is the use of magnets to relieve pain in various areas of the body. It is the simplest, cheapest and entirely painless system of treatment with no side effects. In present article, discussion of fundamental aspect about the application of magnetic field (Natural and artificial) and how it apply to the human body with suggestions. Magnetic field is produce by magnet or electromagnetic generating devices are able to penetrate the human body because human body is magnetic hence magnetic field affect the functioning of human body. Suggestions are, High blood pressure person sleep with foots towards west and …


Section 12- کیفیت توان- Course, Asadollah Kazemi Sep 2015

Section 12- کیفیت توان- Course, Asadollah Kazemi

Dr. ASADOLLAH KAZEMI

No abstract provided.


Section 1: Renewable Energy Resources, Asadollah Kazemi Sep 2015

Section 1: Renewable Energy Resources, Asadollah Kazemi

Dr. ASADOLLAH KAZEMI

No abstract provided.


Wiring Regulations For Students, Denver Burke Sep 2015

Wiring Regulations For Students, Denver Burke

Denver Burke

No abstract provided.


Supercapacitors Energy Storage Based Dstatcom Modeling And Simulation For Distribution System (Smart Grid), M. Abbas Khan, Haider Ali, Nouman Shah, Dr.M Tariq Aug 2015

Supercapacitors Energy Storage Based Dstatcom Modeling And Simulation For Distribution System (Smart Grid), M. Abbas Khan, Haider Ali, Nouman Shah, Dr.M Tariq

Innovative Research Publications IRP India

DSTATCOM is a custom power device that is used to regulate the voltage sags/swells in the distribution system for maintaining the rated voltage level at the terminal of load/sensitive loads. The DSTATCOM can inject three-phase voltages at point of common coupling whose magnitude and phase angle can be regulated with PI controller, while the super capacitors are used to meet the instantaneous power demand since they can store and quickly release significant amounts of energy. This paper explores the use of Super capacitors in DSTATCOM in place of battery for control of load terminal voltage


Transient Analysis Of Second-Order Charge Pump Pll For Phase Step Input, Mohammad Vafadar, Habib Adrang Aug 2015

Transient Analysis Of Second-Order Charge Pump Pll For Phase Step Input, Mohammad Vafadar, Habib Adrang

Innovative Research Publications IRP India

This paper presents the analysis and simulation of second-order charge pump phase-locked loop by applying the phase step at the entrance and calculates the fast lock and transient time and the effects of loop parameters such as capacitor, resistor, loo filter current, control voltage oscillator at the at the fast lock investigated and plotted in the diagram at transition time. All simulation was performed by matlab software.


Optimal Design And Feasibility Study Of Renewable Hybrid Energy Systems, Sayantani Dey, Samrat Malakar Aug 2015

Optimal Design And Feasibility Study Of Renewable Hybrid Energy Systems, Sayantani Dey, Samrat Malakar

Innovative Research Publications IRP India

Of the 1.24 billion people in the country, more than 450 million people do not have access to electricity as well as over 95,000 villages still remain dark after sunset. Even the electrified villages suffer power cuts of 15 hours or more on a daily basis. These problems compel us to resort to other energy sources that are inexhaustible. The paper proposes analysis and comparative study of Hybrid Renewable Electric System, especially Photovoltaic-Fuel cell hybrid system, Wind-Fuel cell hybrid system and Photovoltaic-Wind-Fuel Cell hybrid system with Hybrid Optimization Model for Electric Renewable (HOMER) software for distributed generation system. The model …


An Efficient Diode Clamped Multilevel Inverter For Reducing Thd With Selective Harmonic Elimination Pulse Width Modulation (Shepwm), M. Abbas Khan, Haider Ali, Syed Nouman Shah, Dr.M Tariq Aug 2015

An Efficient Diode Clamped Multilevel Inverter For Reducing Thd With Selective Harmonic Elimination Pulse Width Modulation (Shepwm), M. Abbas Khan, Haider Ali, Syed Nouman Shah, Dr.M Tariq

Innovative Research Publications IRP India

Selective harmonic elimination pulse width modulation (SHEPWM) technique is applied to diode clamped multi-level inverter (DCMLI) to reduce total harmonic distortion (THD) and improve the quality of output power. The modulation technique is implemented centered on dog leg optimization method to find the optimized values for switching angles (θ) of switches (IGBTs) employed. Twelve level diode clamped inverter is implemented in Matlab and the results are compared with non-optimized switching angles also 5-level DCMLI using SHEPWM is compared with other modulation techniques.


Traveling Wave Solutions For The Foam Drainage Equation And The Enhanced ( G/G )-Expansion Method, S. M. Rayhanul Islam, M. Shuzon Ali, M. Shaiful Islam, Kamruzzaman Khan Aug 2015

Traveling Wave Solutions For The Foam Drainage Equation And The Enhanced ( G/G )-Expansion Method, S. M. Rayhanul Islam, M. Shuzon Ali, M. Shaiful Islam, Kamruzzaman Khan

Innovative Research Publications IRP India

In this paper, the enhanced ( G/G )-expansion method is used to assemble the traveling wave solutions involving parameters of the Foam Drainage equation, where G  G() satisfies a second order linear differential equation. The traveling wave solutions are expressed by the hyperbolic functions and the trigonometric functions. When some arbitrary functions included in these solutions are taken as some special functions, these solutions possess profuse structures. This method is direct, concise elementary and effective and can be used for many other nonlinear evolutions equations.


Mcu—Based Robotic Elbow Movement Control, Angelo A. Beltran Jr., Roselito E. Tolentino, Nicomedes C. Javier, Haihang Zhang Aug 2015

Mcu—Based Robotic Elbow Movement Control, Angelo A. Beltran Jr., Roselito E. Tolentino, Nicomedes C. Javier, Haihang Zhang

Innovative Research Publications IRP India

This paper proposes an MCU based robotic elbow movement control. In recent years, a lot of research has been developed in alignment with mimicking body movement especially in the field of medical and industrial applications. Robotic movement has different implementations. The usual method is through PID controller. However, implementation is complicated, response is slow, and movement control is delayed. Speed is also a problem causing the human arm and robotic arm not synchronized with their movement. In this paper, the fuzzy logic method is substituted to PID control. The MCU is used in the implementation of robotic elbow movement. The …


Speaker Dependent Voice Recognition Using Discrete Wavelet Transform, Angelo A. Beltran Jr., Ericson D. Dimaunahan, Donde A. Deveras Aug 2015

Speaker Dependent Voice Recognition Using Discrete Wavelet Transform, Angelo A. Beltran Jr., Ericson D. Dimaunahan, Donde A. Deveras

Innovative Research Publications IRP India

This paper presents effective and robust method for the extracting of features in the speaker dependent voice recognition. Based on the time-frequency multi-resolution property of wavelet transform, the input speech signal is decomposed into various frequency channels. The major issues concerning the design in this paper for wavelet based speaker voice recognition system are choosing the optimal wavelets for the speech signals, decomposition level in the discrete wavelet transform, and selecting the feature vectors from the wavelet coefficients. And finally, the wavelet-based voice recognition system and its performance are discussed and highlighted.


Conversion Of English Text-To-Speech (Tts) Using Indian Speech Signal, R. Shantha Selva Kumari, R. Sangeetha Aug 2015

Conversion Of English Text-To-Speech (Tts) Using Indian Speech Signal, R. Shantha Selva Kumari, R. Sangeetha

Innovative Research Publications IRP India

The objective of this paper is to convert the english text into speech. The conversion of english text into speech is done by using a stored speech signal data. Text to speech conversion module is designed by the use of matlab. By the use of microphone the phonemes (alphabets, numbers, words) are recorded using a goldwave software. The recorded .wav (sounds) files are saved as a database separately. The phonemes are extracted from the text file. For text to speech conversion the concatenation method is proposed. The recorded speech are concatenated together to produce the synthesized speech. The resulting speech …


Mcu—Based Robotic Elbow Movement Control, Angelo A. Beltran Jr., Roselito E. Tolentino, Nicomedes C. Javier, Haihang Zhang Aug 2015

Mcu—Based Robotic Elbow Movement Control, Angelo A. Beltran Jr., Roselito E. Tolentino, Nicomedes C. Javier, Haihang Zhang

Innovative Research Publications IRP India

This paper proposes an MCU based robotic elbow movement control. In recent years, a lot of research has been developed in alignment with mimicking body movement especially in the field of medical and industrial applications. Robotic movement has different implementations. The usual method is through PID controller. However, implementation is complicated, response is slow, and movement control is delayed. Speed is also a problem causing the human arm and robotic arm not synchronized with their movement. In this paper, the fuzzy logic method is substituted to PID control. The MCU is used in the implementation of robotic elbow movement. The …


Design And Analysis Of Automatic Car Park System With Capacity Control, Musa Mohammed Gujja, Umar Abubakar Wakta Aug 2015

Design And Analysis Of Automatic Car Park System With Capacity Control, Musa Mohammed Gujja, Umar Abubakar Wakta

Innovative Research Publications IRP India

The need for an automatic car park gate system has been in increase in recent times following the economic situation in present days. The circuit is aimed at eliminating manual operation of a car park. It incorporate the use of LM741 op-amp and CD4017 decade counter for controlling the number of vehicle that can have access to the parking premises and the circuit is fixed close to the gate with the sensor tragically located where it can sense the presence of a car. The light dependent resistor (LDR) senses both entrance and exit of the cars and this followed the …


Performance Of Discrete Wavelet Transform Based On Ofdm With Adaptive Modulation, Weaam Talaat Ali Aug 2015

Performance Of Discrete Wavelet Transform Based On Ofdm With Adaptive Modulation, Weaam Talaat Ali

Innovative Research Publications IRP India

In the mobile environments, the channel will be highly hostile at high data rate transmission. To combat with this problem, many designs were proposed and developed, such as, Orthogonal Frequency Division Multiplexing (OFDM) system. Adaptive modulation improves the system efficiency by matching transmission parameters to channel variations, so that, OFDM system with Adaptive modulation technique will be achieved an efficient bandwidth transmission technique in wireless fading environments. In this paper, Discrete Wavelet Transform (DWT) is used in OFDM system and illustrates the improvement of Bit Error Rate (BER) and throughput performances compared with used Discrete Fourier Transform (DFT). DWT with …


Performance Analysis Of Weighted Encoding With Sparse Nonlocal Regularization And Spatially Adaptive Iterative Filtering Boost Denoising: A Review, Shivam Shukla, Vijayshri Chaurasia Aug 2015

Performance Analysis Of Weighted Encoding With Sparse Nonlocal Regularization And Spatially Adaptive Iterative Filtering Boost Denoising: A Review, Shivam Shukla, Vijayshri Chaurasia

Innovative Research Publications IRP India

In this paper, we compare the spatially adaptive iterative filtering (SAIF) approach with Weighted Encoding with Sparse Nonlocal Regularization (WESNR) to maintain the denoising strength locally for any spatial domain method. These approaches has ability of filtering local image content iteratively using the given base filter, and the type of iteration and the iteration number are automatically optimized with respect to estimated risk (i.e., mean squared error). Experimental result shows that approx. 7% enhancement in the SNR of SAIF method as compared to the WESNR method.


Distributed Efficient Channel Allocation Technique For Multi-Radio Multichannel Interference-Aware Multi-Path Routing Protocol In Wireless Mesh Networks., Shreenidhi. P. L, Puttamadappa. C Aug 2015

Distributed Efficient Channel Allocation Technique For Multi-Radio Multichannel Interference-Aware Multi-Path Routing Protocol In Wireless Mesh Networks., Shreenidhi. P. L, Puttamadappa. C

Innovative Research Publications IRP India

The major change in the wireless network standards has attracted researchers to utilize benefits of several data services in various applications. Wireless Mesh Networks which follows 802.11 standards are very best alternative to Local Area Networks and Metropolitan Area Networks. There is a need for better utilization of the 802.11 spectrum in Mesh Networks environment when transmitting data through mesh networks. Recent work shows the increase in utilization of 802.11 spectrum for wireless mesh networks. An effort has been made to design and develop a distributed, self healing, self stabilizing protocol that’s assigns channels to mesh nodes in large wireless …


Steady State Analysis Of Wind Driven Sm-Bdfig In The Super-Synchronous Range Of Operation, Mahmoud A. Saleh, Maged N. F. Nashed,, Mona N. Eskander Aug 2015

Steady State Analysis Of Wind Driven Sm-Bdfig In The Super-Synchronous Range Of Operation, Mahmoud A. Saleh, Maged N. F. Nashed,, Mona N. Eskander

Innovative Research Publications IRP India

In this paper a simplified mathematical model of a single machine brushless double fed induction generator (SM-BDFIG) connected to a variable speed wind turbine is presented. The SM-BDFIG consists of a slip ring induction machine, which is the main generator, a converter, and a battery pack mounted on the same shaft. In the supersynchronous speed range of operation, which is investigated in this research paper, the rotor voltage is rectified and used to charge the batteries. The steady state performance of the proposed generator is studied at different values of battery open circuit voltage, different values of the battery internal …