TY - JOUR T1 - Matrix Converter Based Unified Power Quality Conditioner (MUPQC) for Power Quality Improvement in a Utility AU - Valsala, G.L. AU - Suresh, L. Padma JO - Research Journal of Applied Sciences VL - 9 IS - 4 SP - 174 EP - 180 PY - 2014 DA - 2001/08/19 SN - 1815-932x DO - rjasci.2014.174.180 UR - https://makhillpublications.co/view-article.php?doi=rjasci.2014.174.180 KW - Matrix converter KW -unified power quality conditioner KW -current harmonics KW -voltage sag/swell KW -non linear load KW -Matlab/Simulink AB - This study proposes a new approach of unified power quality conditioner which is made up of a matrix converter without energy storage devices to mitigate the current harmonics, voltage sags and swell. By connecting the matrix converter output terminals to the load side through series transformer and the input side of matrix converter is connected to the supply side with step up transformer. So, a matrix converter injects the compensation voltage on the load-side, so it is possible to mitigate the voltage sag/swell problems, resulting in an efficient solution for mitigating voltage and current related power quality problems. Thus, the proposed topology can mitigate the voltage fluctuations and current harmonics without energy storage elements and the total harmonic distortion produced by the system also very low. It also reduced volume and cost, reduced capacitor power losses, together with higher reliability. The Space-Vector Modulation (SVM) is used to control the matrix converter. Matlab/Simulink based simulation results are presented to validate the approach. ER -