... Filter 11 1 Nikolay Bankov, Aleksandar Vuchev and Georgi Terziyski Chapter Thermal Analysis of Power Semiconductor Converters 13 1 Adrian Plesca Part Harmonic Distortion 15 1 Chapter Improve Power Quality ... obtained at t1, t2 = t1 + t, t3 = t1 + 2t, …, tm = t1 + (m – 1) t Then, after expanding equation (4), it can be written as a t a12 t1 a12 N t1 v t1 11 a ... consumers 4 Power Quality Harmonics Analysis and Real Measurements Data Sources and problems of harmonics [2] Harmonic sources are divided into two categories: Established and known New and Future...