Design of Digital IIR Filters with the Advantages of Model Order Reduction Technique

Abstract In this paper, a new model order reduction phenomenon is introduced at the design stage of linear phase digital IIR filter. The complexity of a system can be reduced by adopting the model order reduction method in their design. In this paper a mixed method of model order reduction is proposed for linear IIR filter. The proposed method employs the advantages of factor division technique to derive the reduced order denominator polynomial and the reduced order numerator is obtained based on the resultant denominator polynomial. The order reduction technique is used to reduce the delay units at the design stage of IIR filter. The validity of the proposed method is illustrated with design example in frequency domain and stability is also examined with help of nyquist plot

Economic crisis management in construction projects - A Review

You Many of the construction industries have accepted increasing importance of economic crisis management to control risks. Economic crisis and their management have been critical issues which are related with projects, the construction company and their customers are related with higher chances of risk. The reason for their higher risk is their construction process and activities, their background and their organization. This study is related to economic crisis which immediately taken part in the construction project. The risk in the construction projects is usually identified as an event that highlights objectives of manpower, material and money. The ideas at various levels of construction industries have been collected through literature survey and their results have been analyzed in this paper. From this literature study, the situations influencing economic crisis were studied and recommendation has been expressed to devastate those economic crisis situations

Reactive Power Control in Eight Bus System Using FC-TCR

This paper deals with the simulation of eight bus system having fixed capacitor and thyristor controlled reactor. The system is modeled and simulated using MATLAB.The simulation results are presented. The power and control circuits are simulated. The current drawn by the TCR varies with the variation in the firing angle. The simulation results are compared with the theoretical results

A New Method of Maximum Power Point Tracking for Maximizing the Power Generation from an SPV Plant

411-415<span style="font-size:11.0pt;mso-bidi-font-size: 10.0pt;font-family:" times="" new="" roman";mso-fareast-font-family:"times="" roman";="" mso-bidi-font-family:"times="" roman";mso-ansi-language:en-gb;mso-fareast-language:="" en-us;mso-bidi-language:ar-sa"="" lang="EN-GB">The objective of grid connected photovoltaic (PV) energy conversion system is to extract electrical energy from the PV array and supply to the grid with high power quality and high efficiency. This paper proposes a modified variable step Perturb and Observe (P&O) maximum power point tracking (MPPT) algorithm for improving the efficiency of single stage grid connected power conversion system. Further this paper suggests an integrated controller which is used to improve the quality of power supply to the grid. The proposed algorithm and control techniques are analyzed and compared with conventional methods. The same has been implemented in MATLAB Simulink and verified.</span

Economic crisis management in construction projects - A Review

You Many of the construction industries have accepted increasing importance of economic crisis management to control risks. Economic crisis and their management have been critical issues which are related with projects, the construction company and their customers are related with higher chances of risk. The reason for their higher risk is their construction process and activities, their background and their organization. This study is related to economic crisis which immediately taken part in the construction project. The risk in the construction projects is usually identified as an event that highlights objectives of manpower, material and money. The ideas at various levels of construction industries have been collected through literature survey and their results have been analyzed in this paper. From this literature study, the situations influencing economic crisis were studied and recommendation has been expressed to devastate those economic crisis situations

Analysis of Thermally Diffused Single Mode Optical Fiber Couplers

The phenomenon of dopant diffusion as a viable means of coupler fabrication is investigated. It is well known that the diffusion of dopants can improve the uniformity of multimode star couplers manufactured by the fused biconical taper technique. The theoretical basis for the same phenomenon in a single mode coupler is developed, on the basis of the theory of diffusion and the Gaussian approximation for circular fibers