A Review on Grid-Connected PV System

The concept of injecting photovoltaic power into the utility grid has earned widespread acceptance in these days of renewable energy generation & distribution. Grid-connected inverters have evolved significantly with high diversity. Efficiency, size, weight, reliability etc. have all improved significantly with the development of modern and innovative inverter configurations and these factors have influenced the cost of producing inverters.

This paper presents a literature review of the recent technological developments and trends in the Grid-Connected Photovoltaic Systems (GCPVS). In countries with high penetration of Distributed Generation (DG) resources, GCPVS have been shown to cause unwanted stress on the electrical grid. A review of the existing and future standards that addresses the technical challenges associated with the growing number of GCPVS is presented.

Maximum Power Point Tracking (MPPT), Solar Tracking (ST) and the use of transform-less inverters can all lead to high efficiency gains of Photovoltaic (PV) systems while ensuring minimal interference with the grid. Inverters that support ancillary services like reactive power control, frequency regulation and energy storage are critical for mitigating the challenges caused by the growing adoption of GCPVS.

Anjali | Gourav Sharma"A Review on Grid-Connected PV System"

Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-1 | Issue-4 , June 2017,

Paper URL: http://www.ijtsrd.com/papers/ijtsrd2195.pdf 

Direct URL: http://www.ijtsrd.com/engineering/electrical-engineering/2195/a-review-on-grid-connected-pv-system/anjali

International Journal, Engineering Journal

Power Quality Improvement in Grid Connected PV System

The general trends in the past decade of increasing solar cell efficiency, decreasing PV system costs, increasing government incentive programs, and several other factors have all combined synergistically to reduce the barriers of entry for PV systems to enter the market and expand their contribution to the global energy portfolio. The shortcomings of current inverter functions which link PV systems to the utility network are becoming transparent as PV penetration levels continue to increase.

In this paper an analysis of solar system connected with the grid has been done. The system is subjected with two types of perturbations, i.e. variable load and the variable irradiance level which changes the output of the solar system. The design, modeling, and analysis of a grid-tied PV system are performed in the MATLAB software simulation environment. Solar cell works on the principle of photo voltaic effect, which has nonlinear voltage and current characteristics.

These characteristics are improved with the help of maximum power point tracking (MPPT) controller. MPPT controller helps to feed the inverter with maximum power from the solar system. Results indicate that in the presence of grid disturbances the inverter can react dynamically to help restore the power system back to its normal state. A harmonic analysis was also performed indicating the inverter under study met the applicable power quality standards for distributed energy resources

By Anjali | Gourav Sharma"Power Quality Improvement in Grid Connected PV System"

Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-1 | Issue-4 , June 2017,

Paper URL: http://www.ijtsrd.com/papers/ijtsrd2196.pdf 

Direct URL: http://www.ijtsrd.com/engineering/electrical-engineering/2196/power-quality-improvement-in-grid-connected-pv-system/anjali

Indexed Journal, Engineering Journal

Construction and Analysis of Flyover by BRTS

This paper deals with the construction details of flyover work. which is supposed to make grade separation at intersection and make free movement of traffic. By construction of flyover in vizag town it makes an easy way for the communication of railway station and RTC complex. Also to divert the railway passengers directly to the Railway station, and also clear off the railway station passengers. Flyover is proposed at the heart of the city. Is is mainly used as diverts of Traffic in city.

In this paper for the construction of flyover several Investigation survey, design & execution of four lanes carriage way flyover, two lane carriage way underpass of the City. This paper also includes different stages in the flyover construction such as Traffic studies, Soil investigations, Mix design of concrete used. It is a part of BRTS (BUS RAPID TRANSIST SYSTEM) with this system a lot of traffic pollution may cleared and a direct way to the railway station without much obstructions.

By T Anil | A Pavani | N Venkata Hussain Reddy"Construction and Analysis of Flyover by BRTS"

Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-1 | Issue-4 , June 2017,

Paper URL: http://www.ijtsrd.com/papers/ijtsrd2205.pdf 

Direct URL: http://www.ijtsrd.com/engineering/civil-engineering/2205/construction-and-analysis-of-flyover-by-brts/t-anil

UGC Approved Journal, Engineering Journal

Mechanical Properties of Self Compacting Concrete with Partial Replacement of Rice Husk Ash

Self-compacting concrete (SCC) is relatively a recent development in the construction world. SCC is defined basically by two properties: Deformability and segregation resistance. It flows under its own weight while remaining homogeneous in composition. This research is aimed at examining the feasibility of using Rice Husk Ash as supplementary cementations material. In this research, the main variables are the proportion of rice husk ash (0%, 10%, 15%, 20%) and cement content.

All the results were in range as per code specified. Mix 20RHA showed minimum workability.. The increase of about 25% strength at 7 days, 33% strength at 28days and 36% strength at 56 days were observed with increase of RHA content from control mix (0RHA) to 15RHA. Maximum splitting tensile strength was also obtained bythe mix 15RHA. Greatest increase in mechanical properties was observed for the mix containing 15% rice husk ash.

The inclusion of rice husk ash as replacement of cement does not affect the strength properties negatively as the strength remains within limits up to 20%replacement. Inclusion of RHA showed great improvement in durability Properties of concrete.

By D Sathya Narayana | A Pavani | N Venkata Hussain Reddy"Mechanical Properties of Self Compacting Concrete with Partial Replacement of Rice Husk Ash"

Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-1 | Issue-4 , June 2017,

Paper URL: http://www.ijtsrd.com/papers/ijtsrd2192.pdf 

Direct URL: http://www.ijtsrd.com/engineering/civil-engineering/2192/mechanical-properties-of-self-compacting-concrete-with-partial-replacement-of-rice-husk-ash/d-sathya-narayana

Call For Paper, Engineering Journal

Virtualization & Scheduling in Real Time OS: A Survey

Virtualization is the creation of a virtual (rather than actual) version of something, such as a hardware platform, operating system (OS), storage device, or network resources. In a virtualized environment, computing environments can be produced in a forceful dynamic manner, enlarged, become smaller or go in a specified direction or manner as demand varies. Virtualization is therefore highly suitable to a dynamic cloud infrastructure, because it provides important advantages in isolation, manageability and sharing.

By Shabnam Kumari | Reema | Shahdab Payami"Virtualization & Scheduling in Real Time OS: A Survey"

Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-1 | Issue-4 , June 2017,

Paper URL: http://www.ijtsrd.com/papers/ijtsrd172.pdf 

Direct URL: http://www.ijtsrd.com/engineering/computer-engineering/172/virtualization-and-scheduling-in-real-time-os-a-survey/shabnam-kumari

UGC Approved Journal, Engineering Journal

THD Reduction and Power Quality Improvement in Grid Connected PV System

In this paper an MPPT technique is applied in grid connected PV system to harness maximum available power available from sun. The shortcomings of current inverter functions which link PV systems to the utility network are becoming transparent as PV penetration levels continue to increase. In this paper an analysis of solar system connected with the grid has been done.The system is subjected with two types of perturbations, i.e. variable load and the variable irradiance level which changes the output of the solar system. The design, modeling, and analysis of a grid-tied PV system are performed in the MATLAB software simulation environment.

Solar cell works on the principle of photo voltaic effect, which has nonlinear voltage and current characteristics. These characteristics are improved with the help of maximum power point tracking (MPPT) controller. MPPT controller helps to feed the inverter with maximum power from the solar system. Results indicate that in the presence of grid disturbances the inverter can react dynamically to help restore the power system back to its normal state. A harmonic analysis was also performed indicating the inverter under study met the applicable power quality standards for distributed energy resources.

By Rajbir Sood | Geena Kalpesh"THD Reduction and Power Quality Improvement in Grid Connected PV System"

Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-1 | Issue-4 , June 2017,

Paper URL: http://www.ijtsrd.com/papers/ijtsrd173.pdf 

Direct URL: http://www.ijtsrd.com/engineering/electrical-engineering/173/thd-reduction-and-power-quality-improvement-in-grid-connected-pv-system/rajbir-sood

Indexed Journal, Engineering Journal

Missing Item Prediction and Its Recommendation Based on Users Approach in Ecommerce

The Internet is one of the fastest growing areas of intelligence gathering. Due to the tremendous amount of data on internet, web data mining has become very necessary. Predicting the missing items form dataset is indefinite area of research in Web Data Mining. Current approaches use association rule mining techniques which are applied to only small item sets. Numbers of mechanisms were intended for frequent item sets but less attention has been paid that take the advantage of these frequent item sets for prediction purpose. In order to reduce the rule mining cost for large dataset & to provide online prediction efficiently, the proposed approach use novel method for predicting the missing items. The proposed approach extends advantages of prediction at a higher level of abstraction and reduced rule generation complexity by finding out a technique that will work on dissimilar approach.

By Himanshu Deulkar | Rajeshri R. Shelke"Missing Item Prediction and Its Recommendation Based on Users Approach in Ecommerce"

Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-1 | Issue-4 , June 2017,

Paper URL: http://www.ijtsrd.com/papers/ijtsrd99.pdf 

Direct URL: http://www.ijtsrd.com/engineering/computer-engineering/99/missing-item-prediction-and-its-recommendation-based-on-users-approach-in-ecommerce/himanshu-deulkar

Indexed Journal, Engineering Journal