Rajasthan Technical University

About: Rajasthan Technical University is a education organization based out in Kota, Rajasthan, India. It is known for research contribution in the topics: Photovoltaic system & PID controller. The organization has 716 authors who have published 1084 publications receiving 4530 citations. The organization is also known as: RTU.

Design of optimal hybrid fractional order PID controller

Abstract: This article proposes a hybrid fractional order PID controller optimized with Tilted integral derivative controller (TID) which gives an exquisite response. The coefficients of PID controller are tuned with ziegler-Nichols and Astrom-Hagglund method. FO-PID controller parameters i.e. proportional constant(Kp), integral constant (Ki) are taken by Ziegler-Nichols, derivative constant (Kd) by Astrom-Hagglund method and Tilted integral derivative controller parameters are taken by Astrom-Hagglund. In order to calculate required solutions, two non-linear equations are derived to find the fractional order of the integral term (λ) and derivative term (μ). The step response shows the benefits of above discussed hybrid fractional order PID controller when compared with existing controller. Simulated results are represented on matlab 2012(a).

Exponential Scale-Factor based Differential Evolution Algorithm

Abstract: Differential Evolution (DE) Algorithm is a familiar evolutionary and straightforward optimization approach to deal with nonlinear and composite problems. Crossover rate (CR) and scale factor (V) are two control parameters which play a crucial role to retain the proper equilibrium betwixt exploitation and exploration capabilities of DE algorithm. In DE, for a greater value of CR and V, there is an ample possibility to caper the true solution due to huge step length in the search area. So in this paper, we presented another alternative of DE algorithm named as Exponential Scale-Factor based Differential Evolution (ESFDE) for minimizing the step length. In the introduced approach, the scale factor V is exponentially reduced to keep a proper equilibrium betwixt exploitation and exploitation abilities and in this paper, DE/best/2 approach is used. The propounded algorithm is exerted on 15 familiar test problems of various difficulties. A comparison is done using the propounded ESFDE algorithm, DE/best/2, DE/rand/1, DE/rand/2, Particle Swarm Optimization (PSO) and Gbest-guided Differential Evolution Algorithm (Gbest DE).

Comparative Study of DC-DC Converter With Different Control Techniques

Abstract: DC-DC Converters (DDC) used to change the level of DC voltage by switching action. These DDC are extensively used in industry as well as emerging topic and follow a line of investigation also. The limitations of these converters are the unregulated power supply. To conquer this dilemma there are a variety of control techniques used in DDC. In this paper, we emphasized control techniques that were used to change the level of voltage and achieve a good response. For DDC control techniques are part of linear and non-linear control method like Voltage mode control (VMC),Current mode control (CMC), Pulse-Integral-Derivative (PID) Control, Sliding Mode Control (SMC) and Fuzzy logic Control (FLC).

Power Quality Improvement of Standalone Wind Energy Generation System for Non Linear Load

Abstract: The propose paper goal is to design hybrid shunt active power filter (HSAPF) for harmonic cancelation of standalone wind turbine (WT). The wind energy conversion system (WECS) has permanent magnet synchronous generator (PMSG) run by a fixed-speed 12 m/s wind turbine. The wind maximum power point tracking is obtained by switch mode rectifier (SMR) scheme. Voltage harmonic from the output of WEGS is eliminated by passive L_C filter. Current harmonics due to presence of nonlinear uncontrolled converter feeding with R-L load is compensated by shunt active power filter. Hybriding of active and passive gives cost effective solution of power quality. SAPF is consists of three phase insulated gate field effect transistor (IGBT) switches capacitor coupled voltage source inverter (VSI-CC). Reference current generation of SAPF is based on positive sequence detection method using PLL. DC bus voltage regulation is done using Fuzzy logic controller. Proposed system is simulated using MATLAB/Simulink (2015a). The demonstrated results show that suggested system successfully mitigates harmonics as per IEEE 519-1992 standards.

Deregulation of transmission pricing:MW-Mile method

Abstract: Deregulation of the power system industries has recently increased tremendously throughout the globe. This has curved great attention of power system researchers in finding new pilgrims in the competitive market. This paper presents a case study of 5 and 30 Bus system using MW-Mile method. Three approaches reverse, absolute and dominant have been applied to the cost estimation of transmission wheeling. Wheeling charges is one of the decisive aspects of open access electricity market The obtained results show the convergence and being practiced in the markets.