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Particle Swarm Optimization (PSO) parameters like the Inertia weight and acceleration coefficients are generally kept constant in classical PSO. But it has been found that changing these parameters dynamically makes the PSO more efficient. In this paper we propose a modified PSO algorithm where we change the value of the acceleration coefficient dynamically over iterations. We have used a Fuzzy Inference...
Aircraft technology has been witnessing a complete revamp in the past two decades. The traditional mechanical, pneumatic and hydraulic systems in civil aircrafts are beginning to be replaced by lighter and compact electrical systems. Inverters are indispensable in an aircraft electric system and are employed for conversion of DC power to AC. Multilevel inverters reduces the harmonic content in the...
MRAS estimators have become increasingly popular due to their ease of computational usage, flexibility and accurateness in determining the rotor speed of induction motors without speed sensors mounted on the shaft. This paper considers the three most popularly used configurations of MRAS Speed Estimators i.e., Rotor Flux, Back-EMF and Instantaneous Reactive power. The dynamic performance of the same...
With the advent of powerful long-range radars and beyond visual range (BVR) missiles, pilots are increasingly reliant on the sensors on board the aircraft to make tactical decisions. Real time decisions require the pilot to assimilate and process large amounts of data from multiple sources in a short span of time. This problem is further compounded when there are multiple unknown targets or, in the...
In this paper comparative analysis is carried out for power transmission, for line of 1200km length at 50Hz and 50/3Hz. Test system of 765kV and 1200kV are selected as two transmission voltage levels. Simulation is carried out on test system over Matlab simulink environment. In steps of 25%, computation of sending & receiving end voltages, active power transfer capacity, power factor and compensation...
Renewable Energy Sources are gaining momentum and are consistently increasing their footprint in the power sector due to increased awareness of environmental impacts from widespread utilization of fossil fuels. Solar-energy-based photovoltaic (PV) systems are quickly growing source of distributed generation (DG) and are connected to the power distribution system. The advancement in the field of power...
The major goal of this present work is to evolve combined economic emission dispatch problems employing a modified glowworm swarm based optimization (MGSO) approach. The objective function of this article is treated as cost and emission. The assumption has been carried out by the decision maker for which the multiobjective problem is translated to one intent function. The glowworm swarm based algorithm...
As the stock market time series data (TSD) is highly volatile in nature, accurate prediction of such TSD is a major research problem in time series community. Most of the prediction problems target one-step ahead forecasting, where linear traditional models like auto regressive integrated moving average (ARIMA) or generalized auto regressive conditional heteroscedastic (GARCH) are used. However, if...
Switch Mode Power Supply forms an integral component of the modern day power supply systems. Owing to multiple voltage conversion requirements, there is need for a SMPS system which not only mitigates the system harmonics but also provides an efficient and reliable power conversion. In this paper, an 18-pulse input fly-back converter based SMPS system has been proposed which intends to overcome the...
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