Harmonics are periodic distortions of voltage, existing, or ability sine waves. Harmonics in power distribution systems are sometimes caused by non-linear hundreds for instance switched manner dc ability materials and adjustable velocity motor drives. Gi?i m?i (bao g?m t?t c? gi?i nào có s? thay ??i, c?p nh?t m?i ho?c ?i?u ch?nh)Join-and-View tr