Harmonics are periodic distortions of voltage, present-day, or energy sine waves. Harmonics in electrical power distribution programs in many cases are a result of non-linear masses for example switched method dc electric power materials and adjustable pace motor drives. H?i ngh? l?n th? nh?t n?m 2022 c?a ??ng b? công ty TNHH MTV X? s? ki?n thi?t