Voltage Flicker Caused by Two Interharmonics

Flickers and interharmonics have an inherent relationship. The magnitude of a voltage can fluctuate if it contains interharmonics. This paper investigates the amount of voltage fluctuation caused by two interharmonic components since interharmonics are often produced in pairs. The impact of the interharmonics on the flicker frequency and flicker magnitudes (expressed in the form of RMS and peak value fluctuations) is quantified. Analytical solutions to assess the impact are developed. One of the interesting findings of this work is that the two interharmonic components can be equivalenced into one interharmonic component that yields the same level of voltage fluctuation