B? Giao thông V?n t?i: M? r?ng ?ng d?ng ph??ng ti?n k?t n?i thông minh n?ng l??ng m?iHarmonics are periodic distortions of voltage, recent, or electric power sine waves. Harmonics in energy distribution techniques in many cases are because of non-linear hundreds like switched mode dc electricity provides and adjustable velocity motor drives.123B