Original scientific paper

https://doi.org/10.7305/automatika.54-3.186

Predictive Current Control of Grid-tied Cascade H-bridge Inverter

Marek Pástor ; Department of Electrical Engineering and Mechatronics, Faculty of Electrical Engineering and Informatics, Technical University of Košice, Letná 9, SK-042 00, Košice, Slovakia
Jaroslav Dudrik ; Department of Electrical Engineering and Mechatronics, Faculty of Electrical Engineering and Informatics, Technical University of Košice, Letná 9, SK-042 00, Košice, Slovakia

Abstract

This paper presents a grid-tied cascade H-bridge inverter with predictive current control technique. The proposed 15-level cascade inverter consists of three H-bridge inverters with separated DC sources. At the output of the cascade inverter an L filter is used as a grid filter. The cascade inverter is controlled by the mean of RT-Lab. The predictive current regulator and one-phase synchronous reference frame PLL are designed with help of Rapid Control Prototyping. The proposed control method uses a discrete model of the system to predict behavior of the system for each of 15 voltage levels of inverter output voltage. Verification by simulation and on a laboratory model is described.

Keywords

Cascade inverter; Predictive current control; RT-Lab; Synchronous frame PLL

Hrčak ID:

110173

URI

https://hrcak.srce.hr/110173

Publication date:

3.10.2013.

Article data in other languages: croatian

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