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Power is essential to drive all the electrical appliances. Power quality has a significant role in electronic devices. However, with the development in the electronics industry, the problem of poor power quality has also risen at the same time. The devices used nowadays are quite sensitive to the fluctuations in power. Various problems faced in power quality are voltage swell, sag, short interruptions, distortions, etc. Various methods had been proposed in the past for mitigating the power quality problems. Conventionally, Voltage source inverter (VSI) was used in Dynamic voltage restorer (DVR). This gave rise to the introduction of harmonics in the system signal and was not much efficient. So in this paper, a DVR based system associated with the Y-source inverter is proposed to mitigate the voltage sag issue. The system is analyzed with both the active and passive filters. Fault is inserted externally in the system for estimating the harmonics level in the system. The total harmonics distortion (THD) parameter is taken for determining the performance of the system. The suggested system is simulated on the MATLAB software. From these results, it is verified that the proposed system outperforms the other traditionally used techniques for eliminating the voltage sag. Keywords— Power Quality, DVR, Y-source inverter, passive and active filters, voltage sag

An Approach for Power Quality Enhancement using Y Source Inverter Clubbed with Active Filtration