Srikar Srinath

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A Braille document image is a collection of dots. The position of the dot and relative-ness of the dot with other dots gives different Braille characters. It is challenging, to separate the character lines, words and characters from a Braille document. This paper presents an Optical Braille character recognition system for both machine punched and hand(More)
This paper presents a comparative analysis of steady state behaviour of UPQC with three different control techniques, when connected to a distribution system to protect sensitive loads against power quality problems. The control strategies based only on hysteresis, SPWM and a combination of both for controlling the firing pulses of shunt and series APFs of(More)
A new instrument is presented which is capable of high resolution acoustic imaging at relatively low frequencies. This approach results in increased complexity of the signal processing required and reduced throughput of the instrument. However, these disadvantages are amply compensated by the ability to create velocity scan images of materials with either(More)
Placement of multiple distributed generators (DG) in distribution system is addressed in this paper. A multiobjective index, formulated by combining the appropriately weighed diverse performance indices, is evaluated using Genetic Algorithm to assess the suitable locations and sizes of DG units to be placed. The impact of DG model on DG siting and sizing(More)
We present a sample-based, autoregressive (AR) method for the generation and time evolution of atmospheric phase screens that is computationally efficient and uses a single parameter per Fourier mode to vary the power contained in the frozen flow and stochastic components. We address limitations of Fourier-based methods such as screen periodicity and low(More)
In a low TTL based wireless network, the node drops all its energy before actually transferring the data given to it. This serves as a drawback where the data is not transferred completely resulting in bandwidth wastage and improper message delivery. To address this problem we formulate new routing techniques by which the data from one part is scheduled to(More)
Cable Television (CATV) is designed with erbium-doped amplifier-repeated system that uses an external light – injection technique and a directly modulated wave using amplitude modulation. The external light – injection technique can greatly enhance the frequency response of the laser diode, and hence improve the overall performance of the fibre optical CATV(More)
This paper discusses the modelling and control of custom power device, D-Statcom applied to 11kV/415 V distribution systems. This power electronics based device enhances the quality and reliability of power flow in low voltage distribution networks thus improving the quality of power supplied. Graphical modelling approach is used instead of mathematical(More)
This paper deals with the voltage sag mitigation for a fixed sensitive load by using a Dynamic Voltage Compensator (DVC) connected to the distribution system. DVC consists a power electronic controller, protecting critical loads from disturbances occurring in the supply system and regulating the load voltage against any sag in the supply. The proposed work(More)
Several commercial instruments currently are sold for the purpose of determining the strength of timher [1]. This information is needed because of the reliance of several sectors of our infrastructure on this material. The most notable uses of large timher memhers are in telephone poles and bridges used on railroads. In many of these applications the(More)