Abstract
This paper presents a wideband harmonic compensation method for distributed power converters. The approach samples one fundamental period of the load current, computes the compensation waveform, and transmits it as a single packet block over standard communication links. Unlike selective harmonic compensation schemes, it eliminates harmonic order preselection and compensates a broad spectrum of components, simplifying implementation while improving suppression. Moreover, the use of asynchronous communication mitigates the effects of latency. The method is particularly suited to systems that share harmonic current among multiple converters, e.g., modular battery energy storage systems in microgrids, heavy-duty electric vehicle charging stations, and distributed active power filters. Detailed analysis and simulation results for the considered case study demonstrate that applying the proposed technique reduces the grid voltage total harmonic distortion (THD) from 0.95% to 0.62% (a 34.7% reduction) and the grid current THD from 32.64% to 2.20% (a 93.26% reduction).