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Energies
Volume 15
Issue 21
10.3390/en15217954
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Article

A New Carrier Phase-Shift Modulation Based on Switching the Displacement Angle

by
Yugang Chen
1,
Shuxiang Song
1,*,
Zhixian Liao
1,*,
Dan Luo
2,
Dong Lin
1 and
Duqu Wei
1
1
Faculty of Electronic Engineering, Guangxi Normal University, Guilin 541000, China
2
Institute of Technology, Guilin University, Guilin 541000, China
*
Authors to whom correspondence should be addressed.
Energies 2022, 15(21), 7954; https://doi.org/10.3390/en15217954
Submission received: 27 September 2022 / Revised: 19 October 2022 / Accepted: 21 October 2022 / Published: 26 October 2022
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Abstract

In this paper, a new carrier phase-shift (CPS) modulation method based on switching the displacement angle (SDA) is proposed to compromise the harmonic content of the output voltage and the circulating current. It can be used in medium- and low-voltage applications where the AC-side voltage and DC-side current of the modular multilevel converter (MMC) are required to have low harmonic content simultaneously. In this proposed SDA-based CPS modulation, the carrier displacement angle of the MMC with N submodules in each arm is periodically switched between the values of 0 and π/N degrees, so that the harmonic content of the output voltage and the harmonic content of the circulating current will not be in extreme conditions, which occurs when the displacement angle is set to 0 or π/N degrees. The effectiveness of this method has been verified by simulation and experimental results.
Keywords: modular multilevel converter (MMC); carrier phase-shift (CPS) modulation; output voltage harmonic content; circulating current harmonic content modular multilevel converter (MMC); carrier phase-shift (CPS) modulation; output voltage harmonic content; circulating current harmonic content

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MDPI and ACS Style

Chen, Y.; Song, S.; Liao, Z.; Luo, D.; Lin, D.; Wei, D. A New Carrier Phase-Shift Modulation Based on Switching the Displacement Angle. Energies 2022, 15, 7954. https://doi.org/10.3390/en15217954

AMA Style

Chen Y, Song S, Liao Z, Luo D, Lin D, Wei D. A New Carrier Phase-Shift Modulation Based on Switching the Displacement Angle. Energies. 2022; 15(21):7954. https://doi.org/10.3390/en15217954

Chicago/Turabian Style

Chen, Yugang, Shuxiang Song, Zhixian Liao, Dan Luo, Dong Lin, and Duqu Wei. 2022. "A New Carrier Phase-Shift Modulation Based on Switching the Displacement Angle" Energies 15, no. 21: 7954. https://doi.org/10.3390/en15217954

APA Style

Chen, Y., Song, S., Liao, Z., Luo, D., Lin, D., & Wei, D. (2022). A New Carrier Phase-Shift Modulation Based on Switching the Displacement Angle. Energies, 15(21), 7954. https://doi.org/10.3390/en15217954

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