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In this present study, a nano-MnO2/graphene based cathode was prepared and its characteristics were studied for Mg/MnO2 primary battery applications. A modified magnesium/manganese dioxide (Mg/MnO2) with graphene primary cell was investigated using the prepared MnO2-graphene nanoparticles and conventional MnO2 system. The storage capacity and energy density of the nano-MnO2-graphene based cathode...
This paper advocates a comprehensive loss modeling of the DC-DC high switching frequency Flyback converter by taking into consideration of switching loss, conduction losses and gate charge losses of the main switch of the converter. For this aspect, it envisages a significant loss mechanism along with switching parameter. Effective Loss computation plays an important role to determine the performance...
This paper presents analysis of a Switched Reluctance Machine (SRM) operated as a motor and generator for various operating conditions using Finite Element Analysis (FEA). Based on the data of flux linkage and torque obtained using FEA, the inductance value is calculated. Also developed a SRM model in the MATLAB/Simulink environment. While an Asymmetric Half Bridge Converter (AHBC) is used for excitation...
Polymer Electrolyte Membrane (PEM) fuel cells have received increasing attention because they are widely regarded as a potential future stationary and mobile power sources. In this paper, one-dimensional, steady state model for PEM fuel cell stack is developed in MATLAB environment and the effect of various overpotentials on the polarization and the efficiency of fuel cell are studied. At low current...
In this paper a Kalman filter based state feedback controller of a DC machine is designed and implemented in a hardware. A Kalman filter is used to estimate the speed and armature current from noisy measurement of armature current. A state feedback control is designed and simulated in Matlab. The controller designed is implemented in dSPACE. A chopper circuit is designed and fabricated to drive a...
In this paper the excitation control (AVR) for synchronous generator has been developed using PID controller. Optimal tuning of Proportional-Integral-Derivative (PID) controller parameters is necessary for the satisfactory operation of Automatic Voltage Regulator system. Hence, Real coded Genetic Algorithm is used as optimization technique for tuning optimal values of PID controller parameters (Kp...
Utilities experience significant revenue fatalities due to Non-Technical Losses (NTLs). These losses are principally caused by fraud activities deliberately performed by the consumers. NTLs lead to a series of additional losses, including damage to grid infrastructure and reduction of grid reliability. This paper presents arigorous review of technologies, methodologies and active approaches aimed...
Power utilities in different countries especially in the developing ones are incurring huge losses due to electricity theft. This paper proposes a prepaid energy metering system to control electricity theft. In this system a smart energy meter is installed in every consumer unit and a server is maintained at the service provider side. Both the meter and the server are equipped with GSM module which...
This paper analyzes the performance of dc motor by using series input dc voltage sources. Bidirectional switches are employed to the series input dc voltage sources (MLI). Bidirectional switches are employed to the MLI to reduce the cost of the system. By applying the output of multilevel inverter to dc motor, its characteristics are described. In order to verify the results MATLAB/Simulink is preferred...
This paper presents the implementation of Single Phase 9 level MLDCL Inverter with Half Bridge Cell topology. For N level inverter, (N-1)/2 half bridge cells are required with the same number of voltage sources. One voltage source is used for each half bridge cell. These N levels are obtained in every half cycle of the output. So, in all 2×N levels are obtained in each full cycle. In the proposed...
SEPIC converter control using neural network tuned PI controller is investigated in this paper. SEPIC converter is an AC/DC to DC converter and is very useful for various applications. The performance of the neural network tuned PI controller is compared with that of PI controller for the SEPIC converter by doing simulation in MATLAB-SIMULINK. The performance of the above controllers is tested for...
This paper focus on developing computationally simple and efficient tremor estimation algorithm suitable for real-time applications. Autoregressive (AR) model in combination with Kalman filter (KF) is employed for tremor estimation in surgical robotics devices. A study is conducted with tremor data recorded from surgeons and novice subjects for model identification and characteristics. Results show...
In this paper, differential evolution (DE) algorithm has been proposed to solve a optimal joint placement problem of phasor measurement units (PMUs) and conventional measurements which enable to determine the state variables of the power system. The problem is to minimize the number of PMUs required for network observability and to maximize the PMU measurements redundancy. This is achieved by selecting...
In this paper, the design of sliding mode control strategy based on Time Delay Control (TDC) is presented. TDC is a control technique in which the time delayed signals of system variables are used to estimate and compensate the system uncertainties and external disturbances. This paper shows how TDC works when the plant have an external unmeasurable disturbance and with uncertain parameters. Finally,...
Now a day's Low Tension (L.T.) & High Tension (H.T.) capacitors are manufactured by using All Polypropylene Film (APP) and L.T. capacitors. All Polypropylene Film has very less dielectric losses, long life, high voltage stress. So it is widely used in H.T. as well as L.T. capacitor. However, the cost of L.T. capacitor is increased due to use of APP in L.T. capacitor. As more costing, the use of...
This research work presents a Chaotic Self Adaptive Particle Swarm Optimization (CSAPSO) algorithm in order to solve the Economic Dispatch (ED) problem. The main purpose of the work is to derive a simple and effective method for optimum generation dispatch to minimize the generation cost power networks by considering several non-linear characteristics of the generator such as valve point effect, prohibited...
In the deregulated electricity market, it has become very important to determine the complete information about the participants who are utilizing the transmission network. Transmission line usage computation requires information of generator to load contributions and the path used by various generators to meet loads and losses. In the present restructured electricity market, it is necessary to develop...
This research work presents a Chaotic Self Adaptive Particle Swarm Optimization (CSAPSO) algorithm in order to solve the Combined Economic Emission Dispatch (CEED) problem. The main purpose of the work is to derive a simple and effective method for optimum generation dispatch to minimize the fuel cost and emission of power networks by considering several non-linear characteristics of the generator...
This paper presents an indirect field oriented control (IFOC) of five-phase induction motor drive fed by a five-phase inverter using mat lab/simulink. IFOC is an established control method for high dynamic performance AC drives and the control is simple and highly reliable. Three phase induction motors have many well recognized advantages however their applications are limited to lower end of the...
This paper presents different current control techniques described in literature for three phase voltage source inverters, which can be classified into two main categories; Linear control, Non-linear control. Limitations of linear controllers have been discussed and design methodology for implementing the non-linear controllers such as Hysteresis control, Sliding mode control, Ramp comparison control...
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