Mathematical Model To Predict Total Harmonic Distortion With/Without Line Reactor

This paper presents the mathematical model to predict the total harmonic distortion, with and without a line reactor, in input-current of a Variable Frequency Drive. Besides, line-reactors are considered to be a cost-effective solution to suppress such distortions; this paper discusses the significance of the percentage impedance of the line reactor to suppress harmonics. Moreover, current harmonics are measured at the input of a three-phase 11 kW Variable Frequency Drive - with and without a line reactor. The experimental outcomes are then compared with the proposed model. Finally, the experimental results confirm the proposed model with a deviation of under 3%.