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所属单位：自动化学院
发表刊物：IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS
关键字：Current control inverter LCCL filter tuning algorithm uncertainty and disturbance estimator (UDE)
摘要：LCL filter is usually used as an interface between inverters and the grid. However, due to the characteristics of LCL filter and system uncertainties, it is complex to design a controller with proper parameters. In this paper, with LCCL filter, the order of the inverter control system can be reduced from third order to first order, and an uncertainty and disturbance estimator based control strategy for grid-tied inverters with LCCL filter is proposed. Specifically, the proposed control strategy consists of differential feedforward, proportional-integral controller, and grid voltage feedforward. Moreover, with one-sampling computation plus half-sampling pulse width modulation delays considered, a simple and clear tuning algorithm for the proposed control strategy is presented. Finally, the inverter system with the proposed control strategy is investigated, and the effectiveness is supported by the tuning and comparative experiments with a 2-kW inverter.
ISSN号：0278-0046
是否译文：否
发表时间：2018-05-01
合写作者：Xiong, Yongkang
通讯作者：叶永强