Rajasthan Technical University

About: Rajasthan Technical University is a education organization based out in Kota, Rajasthan, India. It is known for research contribution in the topics: Photovoltaic system & PID controller. The organization has 716 authors who have published 1084 publications receiving 4530 citations. The organization is also known as: RTU.

Dynamic Stability Enhancement of Grid Connected Wind System Using Grey Wolf Optimization Technique

Abstract: To maintain the dynamic stability of a system is a significant problem in the field of grid connected wind system. The dynamic stability may disturb due to any type of fault or disturbance incurred in a wind system. To overcome this dynamic stability problem, in this article a wind energy converting system is used. Here, super conducting magnetic energy storage (SMEs) unit is applied to the considered system. The SMES controller is designed by a voltage source converter (VSC) and a chopper. This SMEs unit supplies active and reactive powers when required, thus balances frequency and voltage of the system which ultimately results in enhancement of dynamic stability of the system. In this work, a recent grey wolf optimization technique (GWO) is applied to optimize the duty cycle of DC-DC chopper. According to the GWO optimized duty cycle signal of chopper charging and discharging of SMEs unit has been controlled. The validation of GWO based control scheme is done with the help of MATLAB simulation results.

Time Restricted Frame Aggregation for Better QoS in IEEE 802.11ac

Abstract: The audio transmission over WLAN requires the better Quality of Service (QoS). In this paper, we are proposing and implementing the novelty adaptive mapping of cross-layers scheme for height the Quality of Services for transmitting the scalable video streams in IEEE 802.11ac wired less environment tends to approximating of the AC’s queue length and delaying of the timely constraining of the streams for which it is to be transmitted. The results clearly states that performing of propose dynamic cross-layers mapping is better with respect to the mapping of static cross-layers scheme.

Forecasting of Wind Speed by Using Deep Learning for Optimal Use of the Energy Produced by Wind Farms

Abstract: Wind speed forecasting is required for predicting the power production from wind farms. Information about estimated wind power production helps in better grid management and scheduling of different types of power plants connected to the grid. This paper uses deep learning Convolutional Neural Network (CNN) for wind speed forecasting. The time series data of wind speed is separated into training, validation, and testing data and the errors in forecasting are estimated. The errors of deep learning method are also compared with that of statistical ARIMA model. It is observed that CNN makes forecasting errors comparable to that of statistical model. The wind speed dataset used in this work are of a coastal site located in Gujarat (India) and are measured by an anemometer located at 80 m height.

Performance Analysis of Modified Hybrid 2-qZS dc/DC Boost Converter for PV System

Abstract: This paper presents the performance analysis of modified hybrid 2-qZS dc/DC boost converter for grid connected PV power system. Since PV array has low dc output voltage therefore a high step up dc-dc converter is required. The proposed converter is modified form of conventional hybrid 2-quasi ZS boost converter. In this converter an additional switch and a diode is connected at the output terminal of conventional hybrid 2-quasi ZS boost converter. A comparison of proposed modified hybrid 2-qZS dc/DC boost converter is carried out with conventional hybrid 2-quasi ZS boost converter and other family of Z-source converters. The proposed converter has boost factor about twice of conventional hybrid 2-quasi ZS boost converter at very small duty cycle 0 < D < 0.166. The performance of proposed converter is analyzed in Matlab 2016a.

Comparision of space-time block code under different fading channel

Abstract: Wireless systems have rapidly moved toward becoming piece of regular day to day existence. Cell Phone systems, Remote LANs and individual region systems are only a couple of cases of largely utilized wireless communications. The Space Time Coding has advanced as a most dynamic research range in wireless communications. Spatial multiplexing builds categorize limit by division a soaring rate motion into several inferior rate streams and transmitting them through the diverse dissimilar antennas. In spatial multiplexing, the beneficiary can effectively interpret each stream given that the got signals have sufficient spatial symbols and that the receiver has sufficient antennas to isolate the streams. The outcome of utilizing these MIMO systems is higher information rate or longer transmit extend without requiring extra transfer speed or transmit control. This paper introduces full information of diversity coding for MIMO system. STBC (space-time block coding) plans including Alamouti's STBC used for 2 transmit antenna plus 2 recievier antanna are investigated. At last, these STBC systems are actualized and analyzed execution as indicated by their bit-error rates utilizing BPSK, QPSK, and 8-PSK modulation schemes.