Bücher von Mahendra Kumar

The accurate analysis of higher order systems are complex, uneconomic and complicated to be used in real problems. Therefore, it is reasonable to sacrifice with model accuracy in order to obtain a simpler model. It is recommended to reduce the order of system model while keeping the dominant behavior of the original system. This low-order model will help to better understanding of the physical system, reduce computational complexity, reduce hardware complexity, economic, simplify the controller design and finally, the simulation becomes computationally cheaper, which saves time and resources. This dissertation proposed the designing of robust power system stabilizers (PSSs) using fast output sampling controllers via reduced order model using particle swarm optimization (PSO) method for good damping enhancement for various operating points of multi-machine power systems. Power system stabilizers (PSS) are used to generate supplementary control signals for the excitation system to enhance the damping of electrical power system during low frequency oscillations.

Large quantities of animal based raw materials are wasted in the developing countries; the most important reason for this situation being the absence of simple, affordable, economically viable and yet dependable technology as to be suitable under the prevailing conditions in the developing world. The present book addresses this reality in its entirety. The first publication to make economic use of animal byproducts for small throughputs was in 1962 by I. Mann. Nineteen eighty onwards, number of publications have appeared on the subject and continue to being published till date. The author has attempted to summarise and update the information of earlier publications and also reproduced some information considered essential in different chapters with relevant references. Additionally, detailed information on topics not covered so far in earlier works, such as "Sanitation and Hygiene" (including microbes), "Disposal of Condemned Materials" and "Treatment of Slaughterhouse Effluents" has been added. With this, we seem to have traveled full circle as far as information on all aspects of making use of animal byproducts for small throughputs is considered. The need of the hour is "to act". Developing world, in particular, can take advantage of this.