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
Discrepancies with generation and transmission infrastructure have led to severe and increasing strain in recent years in power system. A few of the important factors, include issue concerning environment, variations in the energy portfolio and deregulated energy markets. The concern for voltage instability has increased because of the stress that has been developed in the system. Amid the most recent twenty years there has been one or more expansive voltage collapse every year, the reason being more number of interconnections, maximum utilization, and load characteristics. Two instances are an extensive utilization of air conditioners and electrical heating appliances. The definite capacity limits of generation and transmission units should not be surpassed in a healthy power system. When the system is loaded heavily, Voltage stability issue occurs. The Voltage instability state occurs in a power system mainly because of increase in load demand power which in turn causes disturbances. The work done in the investigation of the power quality problems at the distribution end is very much less compared to the transmission side. The electrical disturbance leads to network failure which affects the power distribution system. In this system where consumers are the end users, face various power relevant issues like voltage fluctuations, short circuits, overheating of electronic gadgets, etc. Thus the complete reliability of the system is dependent solely on the power quality supplied. The objective of the proposed work is to meet the consumer demand by using custom power devices like Distribution Static Compensator (DSTATCOM) and Dynamic Voltage Restorer (DVR) which helps in enhancing the quality of power so as to increase the reliability of the system.
The paper construes Passive Fault-Tolerant Control Systems (PFTCSs) by examining the approaches from both philosophical and practical points of view. The objective of PFTCS approach is to maintain the desired performance and system stability with the system, actuator faults, and process disturbances. In this paper passive model-based fault tolerant control system in case of a system, actuator faults, and process disturbances are designed for single-tank system and are simulated with the linear model using Matlab. The faults are in single-tank system faults that are modeled as a leak in tank and actuator faults that are modeled as a fall in actuators (control valve) opening, which could lead to a large loss in the nominal performance. The model-based passive fault tolerant control system is designed using a combination of Neural Network (NN) and PI controller to detect faults in the system and maintain the performance and stability. Simulation results are shown and compared between fault tolerant control system and non-fault-tolerant control system with faults and process disturbances. The simulation results are shown in terms of MSE, hence there is a promising performance increase due to the designed controller strategy.
The engine is the heart of any hardware which may relate to various applications like Vehicles, Railway, etc. The rail application is the application where the engine will work as a main unit of the system. Cummins India Limited is the company which provides the diesel engine to various applications. The diesel engine to rail application is one of the new trends in Cummins. The modification to the railway engine and their system may give better facility to the engine. The engine is of a various type depending on their fuel consumption. The engine is classified into two types depending on which fuel is used for the engine, they are gasoline and diesel engine. The engine is further classified into two types depending on the combustion taking place in the engine, they are internal and external combustion engine. In the rail application, the diesel engine is selected because it has some advantages over the gasoline engine, where the diesel engine falls under the internal combustion type of engine. The rail application with the diesel engine further provided with the engine safety parameters will give the better rail application system. The existing system for the railway has some drawbacks which are explained in this paper and what provision necessary to be taken to provide the best system for the rail application is explained here. The existing system for the rail application consists of the display panel, the drawbacks of the existing panel, and need for the new digital display panel is also explain here.
Water is a major source of energy for all the living things whether it is a plant or an animal. In this modern world, there are a number of villages, where farmers depend on the rains and borewells for the irrigation of land. Monitoring overhead is still an issue for the farmers having a water pump. It is required to turn ON/OFF manually when needed. To minimize the labor effort, wasting of water, and monitoring overhead, it is the necessity to design an automated irrigation system to resolve such problems. In this paper, the authors propose an automated plant and crop irrigation system using various components like the microcontroller, GSM module, and sensor. This automated irrigation system is proposed to schedule water delivery to the crops.
This paper presents a survey on optimization techniques used to tune the controller parameters on Automatic Voltage Regulator (AVR) system. AVR is a device used to adjust the terminal voltage of synchronous generator. Since output voltage has slow response and instability, a Controller is used to improve stability and to get better response by minimizing maximum overshoot, reducing rise time, reducing settling time and improving steady state error. Proportional-Integral- Derivative (PID), Fraction Order PID (FOPID) and fuzzy logic are some examples of controllers which are used. Optimization techniques are used to tune the Controller due to nonlinear loads, time delays, variable operating points and others. There are different types of optimization techniques as Genetic Algorithm (GA), Particle Swarm Optimization (PSO), Artificial Bee Colony (ABC), Harmony Search Algorithm (HSA), Local Unimodal Sampling (LUS), Teaching Learned Based Optimization (TLBO), and others. Researches are performed on different optimization techniques to improve terminal voltage response and stability.