• Aman Sofiya
• K.Srinivas
• Neha Talha

With the widespread use of power electronics devices such as rectifier, inverter etc. in powersystem causes serious problem relating to power quality. One of such problem is generation ofcurrent and voltage harmonics causing distortion of load waveform, voltage fluctuation, voltagedip, heating of equipment etc. Also presence of non-linear loads such as UPS, SMPS, speed drivesetc. causes the generation of current harmonics in power system.The dc links of both inverters are connected in parallel,and the voltage of this dc link is maintained by the low-frequency inverter (LFI). The low-and high-frequency inverterseliminate lower and higher order harmonics respectively. In addition, it is possible to design the LFI such that it canalso compensate the reactive power of the load. The individual passive filter of the hybrid topology is designed to takecare of specific order of harmonics that are predominant in the load. In this paper a design for a three phase activepower filter use a reduced switch (B4) topology and one cycle control is presented. The B4 topology offers theadvantage of reduced cost and bridge losses at the expense of device stress and increased DC-side voltage. This designalso provides the advantages associated with one cycle control. The performances of the proposed topology and thecontroller are examined by MATLAB/SIMULINK-based simulation.

harmonics, passive filter, reduced switch topology

"Design and Implementation of Single phase Active Harmonic filters for Harmonic elimination", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.5, Issue 6, page no.302-305, June-2018, Available :http://www.jetir.org/papers/JETIR1806039.pdf

"Design and Implementation of Single phase Active Harmonic filters for Harmonic elimination", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.5, Issue 6, page no. pp302-305, June-2018, Available at : http://www.jetir.org/papers/JETIR1806039.pdf