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)Harmonics are periodic distortions of voltage, current, or ability sine waves. Harmonics in electricity distribution methods in many cases are due to non-linear loads for example switched manner dc electrical power materials and adjustable speed motor drives.The Auto