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The perturb and observe and an incremental conductance methods are most widely used for maximum power point tracking (MPPT) for solar photovoltaic system. However, it suffers from loss of tracking due to dynamic weather conditions and steady-state oscillations near the maximum power point (MPP). This paper proposes a novel centroid analogy-based MPPT, where centroid analogy (CA) is hybridized with...
In this paper, the application of moth-flame optimization (MFO) algorithm for the optimal control of an active magnetic bearing (AMB) system is studied. Active magnetic bearings are known to be highly nonlinear multivariable systems. An AMB system is used in motors, generators, turbines and various other machineries in different industries to provide an active suspension to the rotor shafts. The comparison...
This paper presents the frequency control scheme for a hybrid isolated power system with type-2 fuzzy logic PID controller. The proposed system consists of two topologies with different generation sources. The first topology consists of a wind turbine generator (WTG) with a diesel engine generator (DEG). The second one consists of a (PV) and micro-hydropower system (MHP) with a DEG. This paper proposes...
ECG is the electrical activity of heart functioning which is used to diagnosis the heart related diseases. ECG helps to decide whether human is healthy or not. Today most of death happened in the world due to the heart diseases. It is very important to know the accurate information about the heart activity to diagnosis the actual diseases. The data base is taken from the MIT-BIH physionet bank. In...
Heart failure is a multi-faceted syndrome with diverse etiologies. Cognition of the movement can be crucial to therapy. The overall occurrence of heart failure is likely to increase in the future because of both an aging population and remedial advances in the supervision of acute myocardial infarction important to improved survival in patients with impaired cardiac function. ECG is the major source...
In this paper an attempt has been made to control the frequency of stand-alone hybrid power system with a simple fuzzy logic control technique which can be used to fulfill the load demand at remote areas. This hybrid system consists photovoltaic (PV) system, diesel engine generator (DEG) and micro hydro power system. The model of fuel cell system is introduced as an energy storing element to improve...
The capacitive switching is frequently encountered in power systems for improving the voltage regulation profile. But, it requires special attention due to an accumulation of electrical charge. This accumulated charge after current interruption can cause a dielectric re-ignition in the switching device such as circuit breaker. When this process repeats, the interruption of capacitive currents causes...
Modern motor control drives start increasing the use of various optimization techniques to tune the controller because of its accuracy and simplicity. Usually, the classical controllers used in motor control drives are not adaptable to the changes such as parameter variation, voltage unbalances, changes in load etc. So, online control should be encouraged in order to make the system robust. In this...
This paper presents the evaluation of Complex Voltage Unbalance Factor (CVUF) on the performance of Induction motor. The assessment of motor performance in terms of copper losses, core loss, power factor, input power, efficiency, etc. are presented. Results show that the effect of phase angle of CVUF should be taken into account while calculating, core loss and copper loss. A mathematical relationship...
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