期刊
IEEE JOURNAL OF EMERGING AND SELECTED TOPICS IN POWER ELECTRONICS
卷 9, 期 5, 页码 6174-6183出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/JESTPE.2020.3031206
关键词
Phase locked loops; Delay effects; Power electronics; Delays; Cost function; Current control; Grid-connected converter; multivariable optimal control; vector current control (VCC); voltage-source converter (VSC)
资金
- National Science Foundation (NSF) [1902787]
- Natural Sciences and Engineering Research Council of Canada (NSERC) [RGPIN-2015-05091]
- Directorate For Engineering
- Div Of Electrical, Commun & Cyber Sys [1902787] Funding Source: National Science Foundation
This article introduces a new vector current controller for grid-connected three-phase voltage-source converters, utilizing a multi-input multi-output approach that offers significantly improved robust performance and a more convenient systematic and optimal design procedure compared to existing methods. Multiple simulations and experimental tests have been conducted to demonstrate the effectiveness of the proposed controller.
This article presents a new vector current controller for the grid-connected three-phase voltage-source converter (VSC). The VSC is increasingly used in many applications, such as distributed generation, motor drives, and high-voltage dc (HVdc) systems. From a control system perspective, this presents a two-input two-output coupled problem when transformed into the synchronous rotating reference frame. The common approach is to decouple the two control loops and use two single-input single-output (SISO) controllers. There are also some more recent approaches to treat the problem using multivariable or model predictive techniques. The proposed controller of this article is based on a multi-input multi-output (MIMO) approach that, compared with existing approaches, offers: 1) a significantly improved robust performance and 2) a convenient systematic and optimal design procedure. Details of the proposed approach and multiple simulation and experimental testings are presented to demonstrate the proposed controller.
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