T.Huy XSMB: Gi?i ??c bi?t k?t qu? x? s? Mi?n B?c ???c bao nhiêu v?y m?i ng??i ?i!Harmonics are periodic distortions of voltage, present, or power sine waves. Harmonics in electricity distribution systems are sometimes because of non-linear hundreds such as switched manner dc electrical power materials and adjustable pace motor drives.new textual c