Control of a Modular Multilevel Matrix Converter for Unified Power Flow Controller Applications

Alberto Duran, Efrain Ibaceta, Matias Diaz, Felix Rojas, Roberto Cardenas and Hector Chavez
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Alberto Duran: Electrical Engineering Department, University of Santiago of Chile, Avenida Ecuador 3519, Santiago 9170124, Chile
Efrain Ibaceta: Electrical Engineering Department, University of Santiago of Chile, Avenida Ecuador 3519, Santiago 9170124, Chile
Matias Diaz: Electrical Engineering Department, University of Santiago of Chile, Avenida Ecuador 3519, Santiago 9170124, Chile
Felix Rojas: Electrical Engineering Department, University of Santiago of Chile, Avenida Ecuador 3519, Santiago 9170124, Chile
Roberto Cardenas: Electrical Engineering Department, University of Chile, Avenida Tupper 2007, Santiago 8370451, Chile
Hector Chavez: Electrical Engineering Department, University of Santiago of Chile, Avenida Ecuador 3519, Santiago 9170124, Chile

Energies, 2020, vol. 13, issue 4, 1-18

Abstract: The modular multilevel matrix converter has been proposed as a suitable option for high power applications such as flexible AC transmission systems. Among flexible AC transmission systems, the unified power flow controller stands out as the most versatile device. However, the application of the modular multilevel matrix converter has not been thoroughly analyzed for unified power flow controller applications due to the sophisticated control systems that are needed when its ports operate at equal frequencies. In this context, this paper presents a cascaded control structure for a modular multilevel matrix converter based unified power flow controller. The control is implemented in a decoupled reference frame, and it features proportional-integral external controllers and internal proportional multi-resonant controllers. Additionally, the input port of the modular multilevel matrix converter is regulated in grid-feeding mode, and the output port is regulated in grid-forming mode to provide power flow compensation. The effectiveness of the proposed vector control system is demonstrated through simulation studies and experimental validation tests conducted with a 27-cell 5 kW prototype.

Keywords: modular multilevel converters; modular multilevel matrix converter; flexible AC transmission systems; unified power flow controller (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2020
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (3)

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