NDLI: Aalborg Universitet Harmonic Stability Assessment for Multi-Paralleled , Grid-Connected Inverters

Content Provider	Semantic Scholar
Author	Yoon, Changwoo Faria, Filipe Miguel Leth, Claus
Copyright Year	2014
Abstract	This paper investigates the dynamic interactions of current controllers for multi-paralleled, grid-connected inverters. The consequent harmonics instability phenomena, which features with oscillations above the fundamental frequency, are evaluated by the impedance-based stability criterion. The frequency range of effective impedance-based stability analysis is first identified. The effect of each inverter on the system harmonic instability is then identified by case studies on different groups of inverters. Lastly, the PSCAD/EMTDC simulations on a system with five passivelydamped, LCL-filtered inverters are performed to verify theoretical analysis. It shows that the impedance-based stability analysis results agree with the time-domain simualtions provided that the frequency of concerns are around the half of the Nyquist sampling frequency. Keywords—Impedance-Based Stability Criterion; PSCAD; LCL-filter; Harmonic Stability; Paralleled Inverters
File Format	PDF HTM / HTML
Alternate Webpage(s)	https://vbn.aau.dk/ws/portalfiles/portal/206305047/harmonic_stability_assessment_for_multi_paralleled_grid_connected_inverters.pdf
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

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