Load Current Harmonic Model Complexity Reduction through Empirical Pattern Analysis

This paper presents an experimental evaluation of coupling coefficients used to describe the harmonic load current dependency on the supply voltage waveform harmonics. This investigation presents an insight to the common behavior of the LED lamps same type circuits. Accounting the cross-order harmonic coupling, assumptions laid out in this paper provide ground to build up less complex models with least measurement to characterize the load. The calculation approach proposed reveals benefits to declare parameters for harmonic coupling modeling of rectifier-based circuits with linear equations. This allows more prominent model parameters’ estimations to be done using fewer load-device individual current harmonic sensitivity characterization measurements. This study presented is focusing mainly on specific types of LED lamp structures, expected to have highest share of usage in the field.