A Comparison of Modulation Techniques for Modular Multilevel Converters

Miguel Moranchel, Francisco Huerta, Inés Sanz, Emilio Bueno and Francisco J. Rodríguez
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Miguel Moranchel: Electronics Department, Universidad de Alcalá, Escuela Politécnica, 28805 Alcalá de Henares, Spain
Francisco Huerta: Electronics Department, Universidad de Alcalá, Escuela Politécnica, 28805 Alcalá de Henares, Spain
Inés Sanz: Electronics Department, Universidad de Alcalá, Escuela Politécnica, 28805 Alcalá de Henares, Spain
Emilio Bueno: Electronics Department, Universidad de Alcalá, Escuela Politécnica, 28805 Alcalá de Henares, Spain
Francisco J. Rodríguez: Electronics Department, Universidad de Alcalá, Escuela Politécnica, 28805 Alcalá de Henares, Spain

Energies, 2016, vol. 9, issue 12, 1-20

Abstract: This work presents a comparison of three different modulation techniques applied to modular multilevel converters (MMCs). The three modulation strategies studied in this paper are the phase-shifted sinusoidal pulse width modulation (PS-SPWM), the space-vector modulation (SVM) and the nearest level modulation (NLM). This paper focuses on analysing the particularities and implementation of each modulation technique. The modulation technique largely defines the generated harmonic content, making this is a key point that must be studied in depth. The paper briefly describes the three modulation techniques and analyses the harmonics generated by each one of the methods. In addition, the paper presents and compares the digital implementation of the three modulation methods in a Field Programmable Gate Array (FPGA). The proposed approaches are validated using a real processing platform and experimentally evaluated in a real high-power six-level MMC.

Keywords: modulation techniques; modular multilevel converter; nearest level modulation; space vector modulation; sinusoidal pulse width modulation (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: 2016
References: View complete reference list from CitEc
Citations: View citations in EconPapers (14)

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