A Frequency Independent Technique to Estimate Harmonics and Interharmonics in Shipboard Microgrids

Modern maritime microgrid systems are witnessing a revolutionary advancement by integrating more renewable energy sources and storage systems. The integration of these sophisticated is achieved, however, through the power electronics converters that cause severe harmonic contamination. This problem becomes serious when some harmonics non-integer multiples fundamental (inter-harmonics) exist concurrently with both system frequency drifts large-power transients, which commune issue in such as shipboard microgrids. Hence, performance widely signal processing algorithms applied measurement communication smart meters quality analyzers tends to worsen. To address this paper proposes an effective method based on eigenvalue solution estimate inter-harmonics modern effectively. method, independent technique can work effectively even under large short window width. proposed evaluated MATLAB software, then experimental validation carried out via analyzing electrical current bulk carrier ship.