Optimum Solution for Power Conditioning in DC Motor Drives Using Shunt Active Power Filter

Nowadays, it is a common practice to use dc electrical drive in real life application due to the several benefits it poses like, fast response, wide speed regulation, high efficiency etc. Since motion control is easily optimized with the help of drive; it is being useful in a large number of industrial and domestic applications. Dc drive is working as a highly non-linear load for the power supply. So it will disturb the supply system and adversely affect the major parameters like system efficiency, THD (Total Harmonic Distortion), decrement in power factor, create an imbalance in active- reactive power etc. As a reduction in power factor increases reactive power which does not have any contribution in energy transfer so its compensation is needed. So In this paper, an attempt is made to upgrade power quality by introducing a shunt active power filter(SAPF) using P-Q theory Here simulation circuit along with its parameters are well manifested and also shown the impact on a power supply with or without the active filter. Commencing the paper with the better understanding of DC drive followed by the topology of PQ theory, simulation circuits, results, comparison and finally ended with a conclusion. An effort is made to achieve THD value of source current below 5% to meet the required IEEE standards.