4.8 Article

An Adaptive PI Controller Design for DC-Link Voltage Control of Single-Phase Grid-Connected Converters

期刊

IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS
卷 66, 期 8, 页码 6241-6249

出版社

IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TIE.2018.2871796

关键词

Adaptive control; dc-link voltage control; grid-connected converters (GCCs)

资金

  1. Tunisian Ministry of High Education and Research [LSE-ENIT-LR11ES15]

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Conventionally, standard proportional and integral (PI) controllers with constant PI gains are commonly used for the dc-link voltage control of single-phase grid-connected converters (GCCs). For such controllers, the selection of the PI gains will lead to a tradeoff between two control objectives: 1) the reduction of the dc-link voltage fluctuations caused by random swings of the active power drawn by the single-phase GCC; and 2) the reduction of the grid current harmonics mainly caused by the 2f oscillation of the active power in single-phase applications. To solve this tradeoff, this paper presents a systematic approach for the design of an adaptive PI controller for the dc-link voltage control of single-phase GCCs. The proposed design approach is simple and it provides a convenient method to properly determine the adaptive PI controller parameters. Representative simulation and experimental results are presented and discussed in order to show the effectiveness of the proposed dc-link voltage controller.

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