Double-Carrier Phase-Disposition Pulse Width Modulation Method for Modular Multilevel Converters

Fayun Zhou, An Luo, Yan Li, Qianming Xu, Zhixing He and Josep M. Guerrero
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Fayun Zhou: College of Electrical and Information Engineering, Hunan University, Changsha 410082, China
An Luo: College of Electrical and Information Engineering, Hunan University, Changsha 410082, China
Yan Li: College of Electrical and Information Engineering, Hunan University, Changsha 410082, China
Qianming Xu: College of Electrical and Information Engineering, Hunan University, Changsha 410082, China
Zhixing He: College of Electrical and Information Engineering, Hunan University, Changsha 410082, China
Josep M. Guerrero: Department of Energy Technology, Aalborg University, Aalborg East DK-9220, Denmark

Energies, 2017, vol. 10, issue 4, 1-23

Abstract: Modular multilevel converters (MMCs) have become one of the most attractive topologies for high-voltage and high-power applications. A double-carrier phase disposition pulse width modulation (DCPDPWM) method for MMCs is proposed in this paper. Only double triangular carriers with displacement angle are needed for DCPDPWM, one carrier for the upper arm and the other for the lower arm. Then, the theoretical analysis of DCPDPWM for MMCs is presented by using a double Fourier integral analysis method, and the Fourier series expression of phase voltage, line-to-line voltage and circulating current are deduced. Moreover, the impact of carrier displacement angle between the upper and lower arm on harmonic characteristics is revealed, and further the optimum displacement angles are specified for the circulating current harmonics cancellation scheme and output voltage harmonics minimization scheme. Finally, the proposed method and theoretical analysis are verified by simulation and experimental results.

Keywords: modular multilevel converter; double-carrier phase-disposition pulse width modulation; double Fourier integral analysis; harmonic characteristic; carrier displacement angle (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: 2017
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (5)

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