International Journal of Innovative Research in Electrical, Electronics, Instrumentation and Control EngineeringA monthly Peer-reviewed & Refereed journal
IJIREEICE meets the suggestive parameters outlined in the latest University Grants Commission (UGC) for peer-reviewed journals, ensuring high standards of research integrity, publication ethics, and academic excellence.
Enhancing the Performance Consistency of Porcelain Insulators by Understanding Failure Modes: Case Study Approach
Mr. Prasanta Ash and Dr. Kappagomtula C.L
DOI: 10.17148/IJIREEICE.2017.5201
Abstract: World over, 40% of insulators used in transmission and distribution segment of power are the composite insulators made from polymeric compound. These insulators are very light in weight, almost 1/5th of conventional porcelain or glass insulators and cost almost 25% of the conventional insulators. Thus, they clearly have technical advantage over porcelain insulators because of their hydrophobic property. This feature enables them to withstand very high pollution levels. In tune with the global demand for pollution control, the demand for these composite insulators are increasing simply because, the high pollution causes frequent flashover and disrupt the power supply. The low cost of composite insulators reduces the project cost thus threatening the demand for conventional porcelain insulators. This is affecting their market share in business. A case study has been undertaken to study the Global Insulators Ltd., Dhanbad in India with an intent to, probe into use of composite insulators, which have not been time tested for their sustenance in the face of their frequent failures, despite their enhanced hydrophobic property. The study is intended to find a reprieve for demand of the conventional porcelain insulators through root cause analysis of failure and suggest ways to enhance their di-electric properties to increase their life. In order to safe guard the business interest of the manufacturer; the name has been changed along with altered data values without affecting the outcome for the results.
Comparison of Two Step and Six Step Impedance Matching Techniques using Quarter Wave Transformers
Prof. Judhajit Sanyal, Prof. Sandip Bhattacharya, Mr. Prabal Chakraborty, Ms. Renaissa Das
DOI: 10.17148/IJIREEICE.2017.5202
Abstract: The current paper seeks to evaluate the performance of the quarter-wave transformer-based impedance matching technique implemented by means of reduced-height waveguide structures with each section being a quarter- wavelength long electrically, with comparison between performances based on number of sections used for impedance matching. The two-step impedance matching technique has been compared to its six-step variant, by comparing the impedance variation from input to output section in both cases, to enable optimization of power transfer and reduction of standing-wave formation due to significant variation in impedance between two successive sections, which is significant in case of two-step impedance matching by two quarter-wave sections.
A State of Art Literature Survey on Different Fault & Condition Monitoring of HVDC System Using Neuro-Fuzzy S & ANN Approach
Nikita Rathore, Manish Shah MIEEE, MIE, MISLE
DOI: 10.17148/IJIREEICE.2017.5203
Abstract: This paper presents an accurate system for condition monitoring and fault identification of HVDC converter using ANFIS and ANN. Here integrated fault identifier is used instead of neural network control. An integrated fault identifier is effective for complete bridge converter. Fault identification methods are applicable in both inversion and rectification modes. ANFIS based current controller is developed for a HVDC system. ANFIS based control can be easily combined with the fault identifier to form integrated system which can improve the dynamic response of HVDC system.
Keywords: ANFIS, ANN, HVDC converter, fault diagnosis, HVDC control.
Co-operative Amplify and Forward Relaying Strategy for Mobile Adhoc Network for Efficient Communication
Vivek K. Dethe, Dr. C.V. Ghule, Dr. Om Prakash
DOI: 10.17148/IJIREEICE.2017.5204
Abstract: For enhancing the BER performance of a wireless network by reducing the effects of fading, transmit diversity is an effective way [1]. Due to size, hardware and cost constraints, majority of the wireless devices (i.e. mobile handsets, etc) are limited to only one antenna. Co-operative communication can be used and incorporated to achieve the transmit diversity by utilizing single antenna wireless devices to share their antennas during session. Such an arrangement creates a virtual MIMO (multiple-input and multiple-output) system [2] [3]. In this paper, we will discuss about the cooperative communications and analyze the performance of amplify and forward protocol for single relay model in idealistic condition which gives way forward to tackle the challenges in Spectrum allocation, Improvement of channel capacity, Extension of range, energy efficient Communications etc.
Keywords: Co-operative Communication, Multiple Input Multiple Output Systems, Transmit Diversity, Relay, Amplify and Forward, Adhoc Networks etc.
Design of Adaptive Changing Structures with Bandwidth Control for Wideband Applications
M. Paranthaman, A. Berlin
DOI: 10.17148/IJIREEICE.2017.5205
Abstract: An adaptive changing antenna based on E-shaped structure with bandwidth controlled is discussed in this proposed work. Tuning antennas to configure dynamically or manually such that they can adapt to changing system requirements can eliminate those restrictions and offers additional functionality. A frequency reconfigurable E-shaped patch antenna can be utilized for improving the bandwidth. The bandwidth can cover the frequency range from 1.85 GHz-2.33 GHz. The performances of the proposed antenna, in terms of return losses and radiation patterns, with divergent DC bias voltages across the varactor diode, have been studied using computer simulation and measurement.
Keywords: Patch Antenna, Reconfigurable Antenna, Cognitive Radio, Two E-Shape.
Enhancing Contrast of Image by Filtering and Brightness Preserving Algorithm
Ribana K
DOI: 10.17148/IJIREEICE.2017.5206
Abstract: Visualisation of an image is an important parameter in the area of image processing. To obtain the better visualisation contrast enhancement is one of the important techniques. Contrast of an image is easily upgraded by maximize the difference between the adjacent pixel values, that can be obtained by the traditional technique histogram equalisation but in that some disadvantages like noise amplification, over and under enhancement may be present in that technique because of the uniform histogram in an output image. In order to minimise the presence of noise in an output image our proposed technique uses filtering operation before the enhancement process so the final image will have better visual quality with minimum brightness error value.
A New Control Strategy for Hybrid Energy Storage System with a Bidirectional DC-DC Converter for EV application
Venkatesh Kama, S.K Biradar
DOI: 10.17148/IJIREEICE.2017.5207
Abstract: With the emerging technologies in the field of Energy Storage System Development, the interest for the development of Electric Vehicle (EV’s) is growing for future road transportation.In this paper the Battery plus Ultracapacitor (UC) Hybrid Energy Storage System(HESS)with an energy management control strategy is proposed. The proposed control strategy optimizes the energy consumption, improves vehicle performance and prolongs the battery lifetime for different vehicle Drive cycles.The proposed HESS topology incorporates the bidirectional DC-DC converter and a complimentary switch pair for interconnection of energy sources and interconnection with vehicle traction drive. The proposed HESS interconnected with BLDC motor and the control strategy is implemented for the acceleration and braking conditions of the vehicle. The DC- DC converter is of small size and itis used for sharing the energy between Battery and Ultracapacitor. It also balances the energy levels of the two sources based on the vehicle drive cycles. And the complimentary switch pair swaps the vehicle load between the two sources based on the vehicle driving condition for optimum energy consumption. The Ultracapacitor contributes to the rapid energy recovery associated with regenerative braking and rapid energy consumption associated with vehicle acceleration. This power system allows the acceleration and deceleration of the vehicle with minimal loss of energy and minimizes the stress on the main batteries by reducing high power demands away from the batteries.The objective of the control strategy developed is to provide uninterrupted and adequate power from HESS to the vehicle motor drive unit for all drive cycles of vehicle. The control logic considers the Battery Voltage, Ultracapacitor Voltage and vehicle speed in order to provide a smooth control, reliable and efficient energy sharing between HESS and vehicle motor drive unit. The Battery SOC and open circuit voltage(OCV) are important parameters for ascertaining battery life because fully charged batteries do not accept any current and hence, under this condition, the Ultracapacitor should be available discharged (that means no more than 15-20 % of its full capacity) to store the energy generated due to regenerative braking at high speeds. By contrast, if the battery state of charge is poor, the ultracapacitor should be available fully charged (that means more than 90 %of its full capacity) to power the traction motor for sudden acceleration.To achieve this requirement both the sources are interconnected through a bidirectional DC-DC Converter which is controlled by the speed of the vehicle.And thus the UC voltage is maintained at required level based on the vehicle speed by sharing the energy between Battery and UC for different drive cycles of the vehicle.
Keywords: Bidirectional DC-DC Converter, BLDC Motor, Ultracapacitor, Battery and Hybrid Energy Storage System (HESS).
A Variable Speed BLDC Motor Drive Fed from A PFC Based Bridgeless Synchronous Buck Boost Converter
Banumathi. S
DOI: 10.17148/IJIREEICE.2017.5208
Abstract: A power factor correction (PFC) based Synchronous buck- boost converter fed brushless DC motor drive and an economic solution for low power applications is presented in this paper. A voltage source inverter which comprises low switching losses is fed from the dc link voltage is used to control the speed of BLDC motor. The dc link voltage is controlled by a synchronous buck boost converter which receives power from a diode bridge rectifier unit. Analysis of PFC synchronous buck- boost converter is made and its performance was assessed under continuous and discontinuous modes of operation. A BLDC motor is well known for its low maintenance, good efficiency and higher price. So reducing the cost of the BLDC motor has become essential. Pulse Width Modulation (PWM) technique has been broadly used to control power converter circuits. The results reveals that the harmonics in the output voltage and current has been reduced compare to buck boost converter.
Keywords: Synchronous buck- boost converter, power factor correction (PFC), Brushless DC motor, Pulse Width Modulation (PWM).
A Novel Six-Transistor SRAM Cell with Low Power Consumption
Ms. Abirami R, Ms. Anjana R, Ms. Esaiyazhini V, Mr. Ramesh. K
DOI: 10.17148/IJIREEICE.2017.5209
Abstract: In this paper, two static random access memory (SRAM) cells that reduce the static po wer dissipation due to gate and sub threshold leakage currents are presented. The first cell structure results in reduced gate voltages for the NMOS pass transistors, and thus lower the gate leakage current. It reduces the sub threshold leakage current by increasing the ground level during the idle (inactive) mode. The second cell structure makes use of PMOS pass transistors to lower the gate leakage current. In addition, dual threshold voltage technology with forward body biasing is utilized with this structure to reduce the sub threshold leakage while maintaining performance. Analysis is done by comparing the power consumed by the different SRAM designs. The performance of the proposed designs can be analyzed with (1.25ÎĽm CMOS) T-spice tool. The results showed that PP-SRAM designs consumed less power compared to other designs.
Combination of Fuel Cell and Wind Energy with Controlled Power Processing using Fuzzy Logic
Chethan .H. R
DOI: 10.17148/IJIREEICE.2017.5210
Abstract: Small scale technologies to produce electricity close to the end users of power are employed by Distributed generation approach. Renewable energy based Distributed generators produce electricity production with the decrease in the global warming. The renewable energy based distributed generators (DG’s) based on wind, solar energy, biomass, mini-hydro along with use of fuel cells and micro turbines will give massive advantages in near future. Distributed generation powered by various renewable and non-conventional microsources has become an attractive option for configuring modern electrical grids because of its advantages like environmental friendliness, expandability and flexibility. A microgrid paves a way to effectively integrate renewable energy based distributed generation. The microgrid consists of cluster of loads and distributed generators that operate as a single controllable system. The microgrid can operated in parallel with or isolated from the main power grid. The microgrid concept introduces the reduction of multiple reverse conversions in an individual AC or DC grid and also facilitates connections to variable renewable AC and DC sources and loads to power systems. Concerned about safe operation and protection of equipment has risen by the interconnection of DGs to the utility/grid through power electronic converters. Enhancement of local reliability, reduction of feeder losses, local voltages support, increased efficiency through use of waste heat, correction of voltage sag or uninterruptible power supply are the special requirement of the customers, the microgrid can be designed to meet their special requirements. In the present work the performance of hybrid AC/DC microgrid system is analyzed in the grid tied mode. Here we have developed a microgrid by using fuel cell system, wind turbine generator and battery. Also fuzzy logic controllers along with PI control mechanisms are implemented for the converters to properly coordinate the AC sub-grid to DC sub-grid. The results are obtained using the MATLAB/ SIMULINK environment.
Abstract: Lack of remote access to engineering laboratory systems has prevented distance learning from fulfilling the accreditation requirements of hands-on design and implementation experience. Although there have been solutions developed around remote and virtual laboratories, these solutions do not fulfill the simultaneous requirements of being portable, plug-and-play, low cost, and commercially available. In this paper, we propose a product oriented solution of a low-cost hardware lab system that every student can own and conduct their laboratory experiments at any location. We introduce a control system lab platform called servo-in-a-box, which is an integrated electro-mechanical servo system, complete with DC motor, sensor, power driver, USB interface, and software. This servo-in-a-box enables many undergraduate control engineering students to conduct PID hardware control lab remotely and individually, while meeting the hands-on learning objectives associated with a traditional on-campus laboratory.
Keywords: portable, plug-and-play, low cost, DC motor, sensor, power driver, USB interface, and software.
Analysis of Human Cardiovascular System using Equivalent Electronic System
N. Vinoth, S. Nagarjuna Chary
DOI: 10.17148/IJIREEICE.2017.5212
Abstract: This paper describes simulation and analysis of the human cardiovascular system using a complex electronic circuit. In this study we have taken a slightly different approach to the modelling of the system and tried to advance existing electrical models by increasing more segments and parameters. Anatomical and physiological data for circuit parameters have been extracted from medical articles and textbooks. The frequency of heart is 1 Hz and the system operates in steady state condition. Each artery is modelled by one capacitor, resistor and inductor. The left and right ventricles are modelled using AC power suppliers and diodes. The results of the simulation including pressure graphs exhibit operation of the cardiovascular system under normal condition. From the electrical cardiovascular model we have analysed some cases which reflect the real time functioning of the human cardiovascular system. Hence we have changed the circuit parameters and observed the output responses which satisfy the actual human responses in different situations.
Keywords: Model; Simulation; Electronic Circuit; Cardiovascular System; Case Studies.
An Integrated Starter-Generator and Winding Configuration for Hybrid Vehicles
Darshan M Hosad, M Chandana, Bhaskar R, Sharen Ranjit
DOI: 10.17148/IJIREEICE.2017.5213
Abstract: This paper comprises of constructing variants, the mounting details of ISG, advantages and benefits of ISG. The four major hardware components: an induction machine, a winding switching board, a motor controlling inverter/rectifier and a system control board. A different electrical machine type that could be used for ISG application, mentioning also some typical commercial available unit. Furthermore the paper gives idea about winding reconfiguration with the ability to externally switch the winding configuration for optimal performance.
Keywords: Hybrid Electric Vehicle, ISG, Winding Re-configuration, Hardware Build and Integration.
Multi criteria Decision Analysis Algorithm based Optimal Selection of PV Panel for Grid-tie PV Electricity Generation System in context of Dhaka, Bangladesh
Abstract: Solar electricity from photovoltaic (PV) panel is the important source of renewable energy and it is being popular all over the world due to enhancement of solar PV technology. There are sorts of PV panels having individually different solar performance features manufactured by different manufactures in different countries. Per watt cost, efficiency, life time etc are different for different types of PV panels. Due to difference in efficiencies, different panels require different amount of land usage for generation of same amount of electricity. Per unit electricity (kWh) generation cost is also different for different types of panels. It is an important concern to reduce land usage and per unit electricity cost. This paper deals with optimal selection of PV panel for grid tie PV power plant using multi- criteria decision analysis (MCDA) algorithm. The Technique for Order of Preference by Similarity to Ideal Solution (TOPSIS) is adopted as MCDA tool for optimal selection of PV panel considering land usage and per kWh generation cost criteria. Several investigations are performed for different weighing of the criteria. This study could be assumed as a powerful road map for decision makers, analysts and policy makers in context of Bangladesh.
Keywords: Optimal selection, Grid tie power plant, solar PV electricity, Multi-criteria decision analysis (MCDA), Technique for Order of Preference by Similarity to Ideal Solution (TOPSIS).
C. Ranjeeth Kumar, S.S. Sugantha Mallika, J. Sree Ranjaane
DOI: 10.17148/IJIREEICE.2017.5215
Abstract: The detection of moving objects in videos is very important in many video processing applications and background modeling is often an indispensable process to achieve this goal. Most of the traditional background modeling methods utilize color or texture information. However, color information is sensitive to illumination variations and texture information cannot be utilized to separate smooth foreground from smooth background in most cases. A new integration framework of texture and color information for background modeling, in which the foreground decision equation includes three parts (one part for color information, one part for texture information and the left part for the integration of color and texture information). This framework is able to combine the advantages of texture and color features while inhibiting their disadvantages as well. A block based method to accelerate the background modeling. Specifically, in the texture information modeling process, a single histogram model is established for each block whose bins indicate the occurrence probabilities of different patterns, which is different from the traditional multi-histogram model for block-based background modeling, and then dominant background patterns are selected to calculate the background likelihood of new coming blocks. Dynamic background and multimodal problems can be handled through this technique.
Study on Different Techniques for Denoising of ECG Signal
Somesh Morya, Dr. Sudhir Agrawal
DOI: 10.17148/IJIREEICE.2017.5216
Abstract: In medical field for diagnosis of heart diseases electrocardiogram (ECG) is used and plays very important role. For better diagnosis a good quality ECG signal is required. Sometimes the problems occur is that noises corrupt the previously recorded ECG signals, significantly they are of two types:-electromyogram induced high-frequency noise, electrodes experience mechanical force, baseline wander this may be due to breathing process or the motion of the patients or the instruments. So that there will be wrong diagnosis. This paper introducing Emperical Mode Decomposition method for denoising of ECG, also introducing other methods for denoising included ecg analysis based on wavelet transform and modulus maxima, time-frequency dependent threshold, artificial neural networks and mathematical algorithm using window analysis.
A Review on Internet of Things – Protocols, Issues
Mohd. Abdul Sattar, Mohammed Anwaruddin, Mohd. Anas Ali
DOI: 10.17148/IJIREEICE.2017.5217
Abstract: The “Internet of Things” (IoT) concept is used to define or reference systems that rely on the autonomous communication of a group of physical objects. The applications areas of the IoT are numerous, including: smart homes, smart cities and industrial automation. IoT systems often provide great benefits to numerous industries and society as a whole. Many of the IoT systems and technologies are relatively novel. The aim of this paper is to provide the last and most innovative contributions concerning the Protocol, Technology, Application, Architecture & Issues of interest in IoT solutions that involve interconnected smart things that interoperate with the objective of solving problems, provide functionality or optimize tasks.
An Experimental Study of the Effect of Current THD to kWh Meter’s Energy Measurement
Syafrudin Masri, M.N. Mamat, M.Y. Yahya
DOI: 10.17148/IJIREEICE.2017.5218
Abstract: An experimental study of the effect of constant rms current with different THD to the single phase digital kWh meter is presented in this paper. The study focused on how harmonics from non-linear load with constant voltage supply and constant rms current affect the energy measurement of single phase digital watt-hour meter. Traditionally, analog electromechanical meter is using the rms current as its main measurement parameter. In digital meter, different techniques and sampling are used to measure the power consumed by the consumers. Although different techniques and sampling are used, the rms current parameter is still the dominant parameter used to measure and calculate the energy measurement. Both electromechanical and digital meter show good measurements under linear load condition. On the other hand, under non-linear load, harmonics are often neglected in energy measurement. In addition, harmonics in heavily distorted current originated from non-linear load and contributed to lot of losses and it will not be recorded in the billing. To make the situation worse, harmonics can propagate through the transformer and they will be affected the power network either if the harmonics are injected from the source or load side. Analysis from the measurement data clearly showed the effect of the harmonics to the energy measurement. In consequence, either utility company or consumer shall be affected if the harmonics parameter is neglected in the energy measurement purpose. The results showed that no significant difference when the actual digital watt-hour meter energy reading is compared to the calculated energy consumption based on rms current value. Therefore, either harmonics are taken or not taken into account during the energy measurement, the consumer is not affected and still paying the same prices. However, the utility company will be burdened by some losses if harmonics are not taken into consideration.
Keywords: Non linear load, THD current, Real power, Energy, Billing and kWh meter-EDS2560.
A New Residential Load Management System in Presence of Variable Load and Market Price
M. Rahmani
DOI: 10.17148/IJIREEICE.2017.5219
Abstract: Modern smart grids are a combination of advanced structures to make the energy supply to the costumers more reliable and flexible. Variable pricing can affect this process and usage of the smart home appliances. The storage systems in variable pricing environment can help the customers to take advantage of varying in tariffs to optimize their incomes and outcomes. The basic structure of using distributed storage systems in a single home can be modified to optimize its benefits. In this paper, a comparison between the old configuration of smart homes having storage systems and a modified storage structure is done. First, load commitment problem for different users is being performed. Afterwards, the storage system has been condensed for the user to show the effectiveness of the proposed method. At the end, to compensate the additional costs to the customer, the pretending acting method is introduced.
Keywords: Smart Home, Demand Side Management, Electric Vehicle, Electricity Market, Load Management.
Abstract: This paper develops the error correction and detection method for Power aware error correction and detection and Increase the number of errors that can be detected and corrected in power state of digital communication devices. Consequence of this research can used in wireless sensors and IOT components because the prudence of power is important. This Method will dynamically change the method of error correction and detection based on power state of machine. Error correction and detection method that used is two dimensional error correction and detection based on hamming code. The circuits that create the redundancy bits and control of errors that maybe happened are simulated.
Keywords: Error correction and Detection, Two dimensional Hamming code, Dynamic power consumption.
Study of Failure Mode and Effect Analysis (FMEA) on Capacitor Bank Used in Distribution Power Systems
A. Pourramazan, S. Saffari, A. Barghandan
DOI: 10.17148/IJIREEICE.2017.5221
Abstract: Failure Mode and Effect Analysis (FMEA) is the systematic procedure for the analysis and assessment of the potential failure of the equipment. Failure modes of the equipment, causes and effects of the failure modes, detection methods and mitigation methods, as well as the severity of the effects and frequency are specified in the FMEA. This study is a part of the project “consultancy services for preparation of network asset maintenance standards & associated asset management documentation” which are carried out by Monenco consulting engineering company (Iran) for Majan Electricity Company SAOC (Oman). This paper presents FMEA and related worksheets for capacitor banks used in Oman distribution power system and consist of following items: component of the equipment, functions of the component, failure modes of the component, failure causes, failure effect (local and final), detection method, compensating provision, severity of the effect and eventually frequency of the failure modes. This method can be utilized for FMEA execution of all other equipment of the power distribution system. The output of the FMEA can be utilized for critically analysis, Reliability centered maintenance (RCM) and risk based maintenance initiatives.
A Weibull Method for Investigating Flashover Voltage of Outdoor Polymer Insulators
El-Said A. Othman, L.S. Nasrat, AbdelrahmanA. Z. Saleh
DOI: 10.17148/IJIREEICE.2017.5222
Abstract: Adding inorganic fillers to unsaturated polyester helps to greatly improve the electrical properties of polymer insulating materials according to the percentage of fillers concentrations and the types of fillers. Experiments and measurements have been performed to study and analyse the flashover voltage of unsaturated polyester with alumina trihydrate ATH and mica fillers with variety of samples lengths at different weather conditions. The probability of flashover to occur has been studied in this research. Flashover voltage value at dry unfilled polyester was 23.2 KV at 2.0cm sample length. Polyester with ATH filler at 60wt% concentration reached the greatest value of flashover voltage 42.3 KV at the same sample length. Polyester with mica filler achieved good results but the maximum percentage of mica filler concentration to be added was 40wt% with flashover voltage value of 38.4 KV.
Keywords: Flashover, Polymer, Insulators, Outdoor, High Voltage.
Analysis of Wind Turbine Generation System by Using MATLAB
Vishal Badole, Pankaj Katre, Sagar Jadhav, Dipavali Lanjewar, Payal Nitnaware, Mrugank Nandankar, Prof. Atul S. Nikhade
DOI: 10.17148/IJIREEICE.2017.5223
Abstract: Wind energy is available everywhere in abundance, tapping this energy and utilizing it optimally is the need of the day. Renewable energy sources, especially wind turbine generators, are considered as important generation alternatives in electric power systems due to their non-exhausted nature and benign environmental effects. In this paper present an Probabilistically evaluation of generating systems by collecting the historical wind speed data over one years for the wind farm location to determine the necessary parameters of the wind speed models for the particular site. The system reliability shows the availability and the power generation model. In this work the basic system reliability indices are calculated. This study shows the probabilistic analysis of wind power generation from wind turbine generators installed at geographic locations.
Development of Single Stage Thyristor Based Grid Connected Single Phase Inverter for Renewable Energy Systems
Mohd Rizwan Khalid
DOI: 10.17148/IJIREEICE.2017.5224
Abstract: Due to increase in the level of pollution and depletion of ozone layer, set-up of new fossil fuel based power generation plants are losing trend day by day and the new trend is moving towards the set-up of renewable resources based power plants. A large number of renewable energy sources based inverters have already been developed to integrate the resources into power system at distribution level. For this purpose, both single-stage and multi-stage converters are being used. Recently, thyristorbaseddc-to-ac converters are also used as low-power, grid connected inverters for solar photovoltaic (PV) applications. This paper proposes a single phase grid-tied inverter which gives lower harmonics in input line current as compared to conventional line commutated grid connected inverters. The proposed converter is analysed in continuous, just continuous and discontinuous modes. The optimum switching condition at which harmonics in the line current isminimum is obtained. The performances of conventional and proposed topology are compared through MATLAB/Simulink based models.
Keywords: Harmonic current, dc-to-ac converters, renewable energy, Total Harmonic Distortion (THD), Magnetic field intensity (H), Flux density (B).
Prashant D. Shewale, Sandeep S. Pawar, Rekha M. Patil
DOI: 10.17148/IJIREEICE.2017.5225
Abstract: The heart of a town depends on its purification of Air, cleanliness of the roads and highways and overall it's encompassing surroundings. However, if the condition discontinuous, then the individuals sleeps in town need to get this. Totally different sorts of Diseases detached in a plague type and it's turning into more durable to guide a healthy life. However, individuals will ignore this Condition by raising their hand to create up a healthy town. Thus we tend to make a system for group action the subject and authority during a Common platform and add along to form the capital of Bangladesh town Healthier. The combination of the sensible phone and also the web service is that the trend of the future info development and software system applications. Mobile phones square measure the foremost unremarkably used communication tools. Using mobile phones to get info isn't solely fast, however conjointly a lot of convenient route to enhance people's lives. The system is associate degree mechanical man based mostly application wherever the User himself will contribute to wash his town, apprize volunteer to come back forward or will inform town Corporation. The amenities of this application square measure - it ameliorates the user to observe close Dustbins location with path, helps to visualize on the market volunteer on the map, notify them using Google push service notification and Assists them to submit a report back to authorities if a problem arise.
Keywords: Dustbin location detection; google push service notification; clean city; Notification, Corporation officers, android.
A Review on Speed Control of Induction Motor Drives
Patel Pinkal Raghubhai
DOI: 10.17148/IJIREEICE.2017.5226
Abstract: Induction motors are the most widely used electrical motors due to their reliability, low cost and robustness. However, induction motors do not inherently have the capability of variable speed operation. Due to this reason, earlier dc motors were applied in most of the electrical drives. But the recent developments in speed control methods of the induction motor have led to their large scale use in almost all electrical drives. Out of the several methods of speed control of an induction such as pole changing, frequency variation, variable rotor resistance, variable stator voltage, constant V/f control, slip recovery method etc., the closed loop constant V/f speed control method is most widely used. In this method, the V/f ratio is kept constant which in turn maintains the magnetizing flux constant so that the maximum torque remains unchanged. Thus, the motor is completely utilized in this method. During starting of an induction motor, the stator resistance and the motor inductance (both rotor and stator) must be kept low to reduce the steady state time and also to reduce the jerks during starting. On the other hand, higher value of rotor resistance leads to lesser jerks while having no effect on the steady state time. The vector control analysis of an induction motor allows the decoupled analysis where the torque and the flux components can be independently controlled (just as in dc motor). This makes the analysis easier than the per phase equivalent circuit.