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Kurnool, India

Kishor G.,JNTUA | Subbarayudu D.,GPREC | Sivanagaraju S.,Jawaharlal Nehru Technological University Kakinada
Research Journal of Applied Sciences, Engineering and Technology | Year: 2011

The study deals with simulation and implementation of two inductor boost converter fed DC drive. The two inductor boost converter fed DC drive is simulated and implemented. The circuit has advantages like higher output voltage and improved power factor. The laboratory model is implemented and the experimental results are obtained. The experimental results were compared with the simulation results. © Maxwell Scientific Organization, 2011. Source

Hemalatha G.,KSRMCE | Anuradha B.,SVUCE | Adinarayana Reddy V.,GPREC
International Journal of Applied Engineering Research | Year: 2015

The primary goal of this work is to introduce temporal artifact detection strategy to detect non responsive channels and trials in evoked potentials by tracing out the signals with very low energy and to remove artifacts in multichannel evoked potentials. The non responsive channels and trials are identified by calculating the energy of the average evoked potential of each channel, and the energy of the average evoked potential of each trial. Then channel wise and trial wise median test is conducted to detect and remove non-responsive channels and trials. An artifact is defined as any signal that may lead to inaccurate classifier parameter estimation. Temporal domain artifact detection tests include: a standard deviation (STD) test that can detect signals with little or abnormal variations in each channel, a clipping (CL) test detect amplitude clipped EPs in each channel, a kurtosis (KU) test to detect unusual signals that are not identified by STD and CL tests, mode deviation test to detect the signals with large mode deviation and correlation test to detect the signals with less correlation. An attempt has been made to apply these techniques to 14-channel visual evoked potentials (VEPs) obtained from different subjects. © Research India Publications. Source

Latha V.S.,JNTUA | Rao D.S.B.,GPREC
IC-GET 2015 - Proceedings of 2015 Online International Conference on Green Engineering and Technologies | Year: 2015

Ethernet technology became predominant due to optimistic nature with proven simplicity, cost, reliability, ease of installation and expandability. This Attractive nature of Ethernet made its existence in any fields of applications such as Industry to Avionics, Video and Voice applications which are intended for higher network speeds. To handle such faster data rates Ethernet has been adopted as alternative technology. The main objective of this paper is to describe Evolution of Ethernet towards the 400GBPS technology and various fields of applications. © 2015 IEEE. Source

Satheesh G.,GPREC | Bramhananda Reddy T.,GPREC | Sai Babu Ch.,J. N. T. U.
IEEE-International Conference on Advances in Engineering, Science and Management, ICAESM-2012 | Year: 2012

A space-vector pulse width modulation (SVPWM) switching strategy is described in this paper. A four-level voltage waveform using open-end winding configuration of an induction motor is obtained by using this strategy. Two unequal DC-link voltages, which are in the ratio of 21 are used to generate the SVPWM based four level voltage wave forms. The proposed algorithm does not employ any look-up tables. The time consuming task of sector identification is altogether avoided in this algorithm. The effective zero voltage signal is added to produce required voltage waveforms. The proposed algorithm employs only the instantaneous reference phase voltages for the implementation of the SVPWM. © 2012 Pillay Engineering College. Source

Satheesh G.,GPREC | Bramhananda Reddy T.,GPREC | Sai Babu C.,J. N. T. U.
2012 International Conference on Advances in Power Conversion and Energy Technologies, APCET 2012 | Year: 2012

In this present paper, a decoupled method for a fixed switching frequency direct torque control (DTC) using four level inverter is discussed. In this approach the four level voltages are generated by using cascaded connection of two conventional two level inverters which are fed with the unequal dc link voltages. Controlling of the two inverters feeding the open end winding induction motor is easier than compared to the controlling of inverter voltages in the other multi level inverters. However, the proposed DTC scheme does not require the sector information of the estimated fundamental stator voltage vector and its relative position with respect to the stator flux vector. Simulation results clearly demonstrate a better dynamic and simplicity in numerical calculations of the proposed method. © 2012 IEEE. Source

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