Informatics Publishing Limited

G. Chitrakala ¹, G. Ganesan ², P. I. D. T. Baladuraikannan ³, T. Parameswaran ⁴

Affiliations
1 Department of EEE, E. G. S. Pillay Engineering College, Nagapattinam, IN
2 Department of EEE, Bharathiyar College of Engineering & Technology, Karaikal, IN
3 Dept. of EEE, Bharathiyar College of Engg & Tech, Karaikal, IN
4 Bharathiyar College of Engg & Tech, Karaikal, IN

Abstract

This paper proposes the control of reactive power is to be done with the help of FACTS (Flexible AC Transmission System) device such as SVC (Static Variable Compensator) & TCPAR (Thyristor Control Phase Angle Reactor). These are the compensators which give a suitable and fast response to control the reactive power for the load which is changing rapidly. Here the tap changer has been designed specially in order to improve the voltage level and there by the smoothening of the reactive power can be achieved. By controlling and varying the firing angle and duty cycle of the thyristor for R, RL and RLE load the varying of reactive power can be done. Simulation results are going to be achieved for the control of reactive power using tap changing system. The main advantage in this system is to control the reactive power and to improve the power quality in the grid to stabilize the voltage by various compensation methods. The validity of the proposed Thyristoroid Control of Tap Changer (TCTC) system is verified by the computer simulation results.

Keywords

FACTS, SVC, TCPAR, TCTC.

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P. J. Suresh Babu ¹, K. Krishnaram ¹, K. Nandakumar ¹, G. Chitrakala ¹

Affiliations
1 EGSPEC, IN

Abstract

This work describes PWM modulation using harmonic elimination technique necessitates the solution of system of non – linear transcendental equation set representing the relation between the amplitude of fundamental wave and each order harmonic and the sinusoidal angle. Conventionally due to their higher complexity , these equations have to be schedule offline and the calculated optional switching angles are stored in look – up tables on interpolated by simple function for real time operation .The above technique involves the solution of Newton – iteration method is usually applied to solve the equation set but the convergence depend on the selection of initial value .All the above traditional selective harmonic techniques ,the lowest uneliminated harmonic and the total harmonic distortion factor are obviously enlarged largely which would do greater harm to the power system. The above limitation can be avoided by introducing GA approach with microcontroller implementation. Besides this, this work also improves the input power factor by providing three bidirectional switches are also reviewed.

Keywords

Selective Harmonic Elimination, Switching Angle, Genetic Algorithm, THD, Switching Frequency.

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G. Chitrakala ¹, N. Stalin ², V. Mohan ³

Affiliations
1 Department of Electrical and Electronics Engineering, E.G.S. Pillay Engineering College, Nagapattinam, IN
2 Department of Petrochemical Technology, Anna University, BIT Campus, Tiruchirappalli, IN
3 Department of Electrical and Electronics Engineering, E.G.S. Pillay Engineering College, Nagapattinam, IN

Abstract

This paper presents a novel control strategy for Slow Switching Frequency Changer (SSFC). The proposed Area Equalization Method (AEM) offers reduced Total Harmonic Distortion (THD) for the required output voltage magnitude.The detailed comparison of the fundamental component and harmonic content of the output voltage of the AEM with the results obtained from the existing cycloconverter control strategies are also presented. Results of the simulation have been validated with the experimentation and superiority of the proposed scheme is conformed.

Keywords

Slow Switching Frequency Changer, THD, Cycloconverter, Area Equalization Method.

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