Mitigation of Harmonics by Shunt Active Power Filter using Synchronous Detection Method

  ijett-book-cover  International Journal of Engineering Trends and Technology (IJETT)          
© 2013 by IJETT Journal
Volume-4 Issue-6                      
Year of Publication : 2013
Authors : A.Subramaniya Siva , M.Bhavani


A.Subramaniya Siva , M.Bhavani."Mitigation of Harmonics by Shunt Active Power Filter using Synchronous Detection Method". International Journal of Engineering Trends and Technology (IJETT). V4(6):2584-2588 Jun 2013. ISSN:2231-5381. published by seventh sense research group.


In recent days the usage of non - linear loads are becoming enormous which gives an alarming signal to power system and power engineers. This paper deals with design, simulation experimentation of a shunt active power filter (SAPF) to improve power quality. Due to a large amount of non - linear power electronic equipments, and fluctuating loads (such as that of arc furnace, heavy merchant mill etc), problems of power quality have become more and more serious with each passing day. The usage of active filter mitigates the harmonics present in the current signal resulting in maintaining the quality of the power supply in the system. It is known from the fact that Harmonic Distortion is one of the main power quality problems frequently encountered by the utilities. As a result Shunt Active power filter (SAPF) gains much more attention due to excellent harmonic compensation. Here Synchronous Detection Method (SDM) is used to tune the Shunt active power filter. On owing SDM method gives away an outstanding performance under any voltage conditions ( balanced, un - balanced, balanced non sinusoidal and balanced sinusoidal). Extensive simulations were carried out; Simulation results validate the superior performance of Synchronous Detection method (SDM) . Simulation is done in Matlab/simulink software and the results shows that Total Harmonic Distortion (THD) is reduced significantly when compared with other methods.


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Harmonic compensation, Shunt Active power filter, hysteresis controller, IGBT, SDM control strategy.