UDE-Based Robust Droop Control of Inverters in Parallel Operation
作者： Qing-Chang Zhong , Yeqin Wang , Beibei Ren
关键词:
摘要: Conventional droop control methods cannot achieve accurate proportional reactive power sharing, due to the mismatch of components, system disturbances, etc. In this paper, an uncertainty and disturbance estimator (UDE)-based robust controller is proposed address these problems. As a result, model nonlinearity (e.g., angle uncertain output impedance) disturbances variations impedance, load change, fluctuating dc-link voltage) can be estimated compensated. Experimental results from single-phase with two inverters are provided demonstrate effectiveness strategy. order further advantage flexibility UDE-based strategy, simulation three-phase presented comparison strategy reported.
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