Fuzzy – Discrete wavelet Transform aided SCII based IDVR for Mitigating Power Quality Issues

Document Type : Primary Research paper


1 Department of Electrical and Electronics Engineering, AMET Deemed to be University, Chennai

2 Department of Electrical Engineering, Government college of Engineering, Odisha


This paper emphasize on proposing a fuzzy controller aided switched coupled inductor inverter (SCII) based dynamic voltage restorer for mitigating power quality issues. The system taken here for study comprises of distribution networks having two or more DVR interleaved in each feeder. The traditional DVR topology with a voltage source inverter (VSI) is changed to a switched coupled inductor inverter, which offers an obvious advantage in power transmission over the former. The controller's adaptability is increased in this study by using a fuzzy combine discrete wavelet transform (DWT). The fuzzy and DWT-assisted PWM generation improves the controller's performance by significantly reducing harmonics. The interline dynamic voltage restorer (IDVR) provides a solution for major PQ concerns such as voltage sag and swell, according to simulation and experimental data. In addition, for a load with RL fluctuation, total harmonic distortion (THD) is decreased to 1.46 percent.