Question

What is the harmonic factor

Answer 1

The total harmonic distortion (THD) is a measurement of the harmonic distortionpresent in a signal and is defined as the ratio of the sum of the powers of all harmonic components to the power of the fundamental frequency. Distortion factor, a closely related term, is sometimes used as a
synonym.

In audio systems, lower distortion means the components in a loudspeaker, amplifier or microphone or other equipment produce a more accurate reproduction of an audio recording.

In radiocommunications, lower THD means pure signal emission without causing interferences to other electronic devices. Moreover, the problem of distorted and not eco-friendly radio emissions appear to be also very important in the context of spectrum sharing and spectrum sensing.[1]

In power systems, lower THD means reduction in peak currents, heating, emissions, and core loss in motors.[2]