Definition of HarmonicDue to the existence of the nonlinear load, the current and voltage waveforms in the power grid will be distorted to non-sinusoidal wave. Through the decomposition of the non-sinusoidal wave by Fourier series, the component whose frequency is the same as the power frequency is called fundamental wave. The component whose frequency is greater than the power frequency is called..

Definition of HarmonicDue to the existence of the nonlinear load, the current and voltage waveforms in the power grid will be distorted to non-sinusoidal wave. Through the decomposition of the non-sinusoidal wave by Fourier series, the component whose frequency is the same as the power frequency is called fundamental wave. The component whose frequency is greater than the power frequency is called..