[1] Power Enhancement in Hybrid PV Wind System Using Power Buffer Control
Ritu Gupta , DR. Amit Shrivastava & Prof. Sandeep Prasad
Solar and wind energy system is one of the most prominent sources of energy. The utilization of solar and
wind energy system has become increasingly popular due to modular and environment friendly nature. Solar and
wind energy system works normally in standalone or grid connected mode, but the efficiency of these sources is less
due to the stochastic nature of solar and wind resources. The hybrid renewable energy sources with grid integration
overcome this drawback of being unpredictable in nature. The use of active dynamic buffers is a method for
mitigating the effects of constant power loads is. These devices act as an interface that decouples the dynamics of
the load from the system. In this paper we have designed a hybrid Solar Wind Energy System using
MALAB/SIMULINK environment to enhance the output by reducing Total harmonic Distortion in the output
voltage waveform by employing suitable power buffer. The active Power output with power buffer came
approximately 8000 volt ampere and is highly stable whereas the active power output from the inverter without
buffer is varying between 5000 volt amperes. More smooth and stable active power output from the inverter has
been achieved with power buffer in solar wind hybrid system. It was concluded that the stability and safety of the
power grid based on the hybrid system is improved when the power through the designed hybrid system with power
buffer is fed to the grid system.
[2] Single/Multicarrier Block Transmission Systems Optimal Pilot Design for Channel Estimation
Mahima Raikhere & Prof. Aparna Gupta
The sensor nodes communicate together by wireless techniques, and these communication techniques are handled for channel estimation pilot sequence is design in such way that frequency selection is single carrier
SC and multi-carrier MC block transmission systems. The Bayesian Cramer Rao bound BCRB is minimized by the channel estimation with training design for MSE. which also gives us the knowledge about channel
combined with receiver noise covariance and which is subject to total transmit power constraint. The optimal pilot sequence which is applicable for 4 block transmission systems that is single carrier - zero padding,
multicarrier -zero padding, single carrier - cyclic prefix, multi-carrier - cyclic prefix system which is driving from propose approaches. The framework proposed, and drive results will be general with the wide
applicability. In the terms of MSE and BER both the conventional pilot design is present less result in comparison to the simulation results will good of the proposed pilot design approach.