What are harmonics in electrical systems, and what causes them?
In an electrical system, harmonics refer to the components with frequencies that are integer multiples greater than the fundamental frequency obtained by decomposing a periodic non-sinusoidal alternating quantity through Fourier series, and they are usually called higher harmonics.The main causes of harmonics are as follows: Existence of Nonlinear Loads: This is the primary cause of harmonics generation. For example, power electronic devices, including rectifiers, inverters, and frequency conver