02943nas|a2200421 i 4500 20260818114755.0 280101s2000 th uu m rtt 00| a1eng d .b11818839 AIT Thesis no. ET-00-20 Kumar, R. Arun A fuzzy logic system for minimization of harmonics under the unbalanced operation of static VAR compensators Bangkok : Asian Institute of Technology, 2000 70 leaves Thesis ; no. ET-00-20 A thesis submitted in partial fulfilment of the requirements for the degree of Master of Engineering Thesis (M.Eng.) - Asian Institute of Technology In modern power systems, there has been a tremendous growth of single-phase non-linear loads supplied from 3-phase distribution systems, which generate unbalanced currents in the system. These non-linear loads cause poor power factor, low efficiency and interference with communication networks. To improve system performance, Thyristor Controlled Static VAR Compensators (SVCs) are already used in power systems, but they introduce additional harmonics in the AC system. The performance of SVCs are measured by, the Telephone Interference Factor (TIF), the Total Harmonic Current Factor (IT) and the Distortion Factor (D). To optimize the operation of SVCs, the unsymmetrical firing of thyristors is required. Fuzzy Logic Systems (FLSs) can be effectively used to control the firing angle of thyristors by using previous knowledge base and Fuzzy rule base with minimum source reactive power and harmonics injection in the power system. This report presents a Rule Based Fuzzy Logic approach to determine an optimum combination of the phase-wise reactive power generation from SVCs to achieve a balanced reactive power supply from AC system based on TIF. Fuzzy logic Electric power systems Control Surapong Chiraratananon, Chairperson Dhadbanjan, Thukaram, Chairperson Rajapakse, Athula, Examination committee Yu, Cun Yi, Examination Committee Partial Scholarship, Scholarship donor AIT, Scholarship donor Asian Institute of Technology. Thesis ; no. ET-00-20 Full-Text http://203.159.5.9/ait-thesis/detail.php?q=B06806 .b11818839 mnait u 240401 0 010128 m a u 2 mnait mnarc 22 40 Barcode : 30050120748909 CREATED : 2013-11-20 RECORD # : i12747324 LPATRON : 0 LCHKIN : - # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 0 TOT RENEW : 0 Barcode : 30050120347397 CREATED : 2016-06-15 RECORD # : i13038217 LPATRON : 0 LCHKIN : - # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 0 TOT RENEW : 0 48495 48495 0 0 0 0 MAIN MAIN mnait 2026-08-18 50.00 0 AIT Thesis no. ET-00-20 30050120748909 2026-08-18 11:47:55 3 2026-08-18 22 0 0 0 0 MAIN MAIN mnarc 2026-08-18 0 AIT Thesis no. ET-00-20 30050120347397 2026-08-18 11:47:55 2026-08-18 40