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
In this study, the comparative analyzes of solar Photovoltaic (PV) energy production potential between Van which is situated in the far east of Turkey, and Antalya which is situated in the south of Turkey, using dynamic PVSOL Expert 6.0 simulation tool regarding annual temperatures and solar radiation capacity was performed. The objective of this paper is to explain and help in better understanding of which part of the country should be invested regarding solar energy generation. Ignoring the average annual temperatures, Antalya seems to be advantageous since, the solar radiation capacity is high, but considering the temperature’s negative effects on the solar panels, the advantages of Antalya decreases. Since, the average annual temperatures in Antalya are higher than Van, the payback period of the investment increases by 3.44%, although the solar radiation capacity is much more than in Van. Under the same conditions, the solar energy production potential difference between the two cities is only 6.25%. As can be clearly seen from the simulation results performed in this study, there are not too much differences regarding solar energy production potential between Antalya and Van. Related to the cost of an investment for a solar power plant investment, both the cities can be selected.
The uniqueness of this system is the execution of controlling mechanism of the equipment in an altered way. The hardware based system is used to monitor and control the system for household appliances has been designed in this paper. The appropriate control mechanism is implemented by the reliable action of TRAIC with OPTO-isolated drivers. Here, the loads are connected in parallel to share the power. The system also has the ability to monitor the tamper action by having essential voltage and current sensor. The load trips if any of the above action is sensed. The recycling time will monitor the load and terminate the unwanted load from sharing. This design is a human-friendly technical solution for tracking and controlling the household appliances.
This paper deals with the control of liquid level of a split range plant and the pH of a pH Neutralization plant respectively, when subjected to Sliding Mode Control (SMC) and Dynamic Sliding Mode Control (DMSC). Both these controllers are the types of Variable Structure Control (VSC). This is a type of Non Linear Control. The pH plant is subjected to both the controllers and the effect of chattering is observed. The similar action is performed on a split range prototype plant and the effect of chattering is observed in this model also. These two controllers help to identify the effect of it over the final control element. The results are presented and the best controller is suggested. The whole programming is done using LabVIEW software, which is a graphical programming software. LabVIEW software is being widely used in industries and helps to visualise the output in a user friendly method. The interfacing of the hardware and software is done using Data Acquisition System.
Lift irrigation method is a method followed in water scarce areas, where the underground water source is tapped for irrigation of agricultural fields. This process is automated to achieve a greater control over the parameters of importance and by that way increasing the efficiency of the entire process. In the integrated approach of automation, the whole system is considered and the individual modules used have a dependency over the other. Thus integrated method requires maintenance of all the modules in high efficiency to effectively gain the advantages of the method. The expected result of this approach is a central and local control system for the process and to develop a controller program which is more user-oriented. The comparative results of the existing process with the developed approach show a great variation in the ease of troubleshooting the process and also the monetary difference in maintaining the system. Analysing the results, about 20% difference in maintenance time is found out considering for a month.
This paper presents, many mixed methods for Model Order Reduction (MOR) of a continuous approach for Single Input Single Output (SISO) system. The reduced order numerator polynomial is obtained with the simple differentiation method. The numerator of higher order transfer function reduces by differentiation method and denominator reduces by many clustering techniques such as pole clustering, modified pole clustering, residue based pole clustering, fuzzy Cmeans clustering and stability equation method. The proposed method has been verified using with two numerical examples, first is used in the continuous time system and the second is used in the discrete time system.
In the present time, the inverter-driven induction motor drives are being widely employed in the industries for variable speed applications. These drives are replacing DC motors and thyrister bridges day-by-day in the industries. Therefore, health monitoring of these variable speed drives are receiving large attention from the researchers. In this research paper, the rotor broken bar fault has been diagnosed in the steady state as well as transient conditions by advanced signal processing techniques. For fault detection in the steady state condition, the Fast Fourier Transform (FFT) algorithm is used and for transient fault detection, time domain as well as wavelet transform techniques have been used. The time domain and frequency domain techniques show some kind of lacks for diagnosis of this fault. Therefore, a wavelet transform based new technique for early broken rotor bar, fault diagnosis purpose has been proposed and the rotor fault is efficiently diagnosed in the transient condition. These approximation signals based new technique has diagnosed the fault in the transient condition and consequently, fault may be averted before they become more catastrophic. As a result, industries may save large revenues and unexpected failure conditions.