Diagnosis of Air-Gap Eccentricity Fault for Inverter Driven Induction Motor Drives in the Transient Condition
Modelling and Simulation Study of a Helicopter with an External Slung Load System
Comparative Study of Single Phase Power Inverters Based on Efficiency and Harmonic Analysis
Trichotomous Exploratory Data Analysis [Tri–EDA]: A Post Hoc Visual Statistical Cumulative Data Analysis Instrument Designed to Present the Outcomes of Trichotomous Investigative Models
LabVIEW Based Design and Analysis of Fuzzy Logic, Sliding Mode and PID Controllers for Level Control in Split Range Plant
The power quality has become an important issue in recent years. The aim of this paper, is regulation of source voltage at the distribution side under voltage sag as well as harmonics. The Unified Power Quality Conditioner (UPQC) provides combined features of both series and shunt Active Power Filters (APFs). The cascaded multilevel inverter with sinusoidal switching scheme is employed for low Total Hormonic Distortion (THD) in the output. The UPQC controller is designed based on synchronous dq0 transformation. In this paper, the UPQC performance with Proportional Integral (PI) controller and fuzzy logic controllers under sag and harmonics are analyzed in MATLAB environment.
This paper deals with the diagnosis and analysis of heart rate using Pulse sensor. Heart rate of a human body can be measured by considering the change of blood volume in fingertip with the help of microcontroller based methods. This method detects the volume change of blood by an optical sensor based on infrared technology. The main objective of this pulse sensor is to use Optical methodology to detect the blood flow through the index finger and offer the advantage of portability. The principle of Pulse sensor is that certain amount of light energy from infrared will be absorbed by blood cells and the remaining amount of light will be transmitted to the photodiode. Based on the amount of light transmitted, the flow of blood can be calculated, which is directly related to pulse rate. Advance Rise Machines (ARM) Microcontroller (LPC2148) is programmed to count the pulse and to display the heart rate digitally on an LCD. Peak detection algorithm plays an important role in diagnosing heart related diseases by comparing the pulse signal and the ECG signal using VB.NET tool.
This paper presents the effects of load parameters and their variations on power system frequency and tie-line power. In this study the authors have selected two area thermal power system with Integral (I) and PSO-PID (Practice Swarn Optimization-Proportional-Integral Derivative) controllers. From the mathematical modelling of power system, frequency is a function of power system parameters and small changes in these parameters lead to small deviations in the system frequency and tie-line power. In case of extreme ends of parameters, even for small changes in load power there will be a chance of instability in overall power system. This paper deals with stable case for different parameter variations. Simulations are carried out in MATLAB/SIMULINK software.
A large interconnected power system consists of large and small generating stations and all stations must have same frequency. Fuzzy-PID (Propositional-Integial Derivative) control method has been applied in this work for Automatic Generation Control (AGC) of multi-area power system with Generation Rate Constraints (GRC). The objective of providing an Automatic Generation Control (AGC) is to maintain the system frequency at nominal value and the power interchange between different areas at their scheduled values. The main requirement of an interconnected AGC is to ensure that the frequency of various bus voltages and currents are maintained at near specified nominal values, and tieline power flowing among the interconnected areas are maintained at specified levels, and total power requirement on the system as a whole is shared by individual generators economically in optimum fashion.The main work of AGC is to maintain constant system frequency. This method is used in the control system having three areas with steam turbine and one with hydro turbine tied together with power lines. The performance analysis of AGC using fuzzy-PID controller is presented in this paper.
The Inverted Pendulum (IP) system is a classic control problem which is used as benchmark and is easily available in laboratories to verify new control techniques evolved. The main aim of this paper, is to develop a controller to keep the pendulum upright and cart at desired position. In this paper, feedback linearization control technique is used to eliminate non linearity of this system and compared with conventional PID (Propositional- Integral- Derivative) controller. The MATLAB Simulink model has been developed for simulation, control and analysis of IP system. The result shows that the cart position and pendulum angle both acquired desired position quickly.