Sector Subdivision Based SVPWM Strategy of Neutral-Point-Clamped Three-Level Inverter for Current Ripple Reduction

Guozheng Zhang, Bingxu Wei, Xin Gu, Xinmin Li, Zhanqing Zhou and Wei Chen
Additional contact information
Guozheng Zhang: School of Electrical Engineering and Automation, Tianjin Polytechnic University, Tianjin 300387, China
Bingxu Wei: School of Electrical Engineering and Automation, Tianjin Polytechnic University, Tianjin 300387, China
Xin Gu: School of Electrical Engineering and Automation, Tianjin Polytechnic University, Tianjin 300387, China
Xinmin Li: School of Electrical Engineering and Automation, Tianjin Polytechnic University, Tianjin 300387, China
Zhanqing Zhou: School of Artificial Intelligence, Tianjin Polytechnic University, Tianjin 300387, China
Wei Chen: School of Artificial Intelligence, Tianjin Polytechnic University, Tianjin 300387, China

Energies, 2019, vol. 12, issue 14, 1-16

Abstract: This paper presents a sector subdivision based space vector pulse width modulation (SVPWM) strategy with reduced current ripple for a three-level inverter. Using the output current ripple theory, closed-form expressions of average current ripple vectors for both continuous and discontinuous switching sequences are derived. Based on the sector and triangle distributions of conventional SVPWM strategy, each triangle is further divided into three small-regions. Then the switching sequence with the lowest magnitude of the average current ripple vector is applied in every small-region, so that the advantages of continuous pulse width modulation (CPWM) and discontinuous pulse width modulation (DPWM) under different modulation index conditions are combined to reduce the current ripple in the whole modulation range. The output performance of the proposed strategy is compared with the conventional CPWM and DPWM strategy, and experimental results verify that the proposed strategy could reduce the current ripple of three-level inverters effectively.

Keywords: three-level inverter; harmonic distortion; current ripple; space vector 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: 2019
References: View references in EconPapers View complete reference list from CitEc
Citations:

Downloads: (external link)
https://www.mdpi.com/1996-1073/12/14/2734/pdf (application/pdf)
https://www.mdpi.com/1996-1073/12/14/2734/ (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:gam:jeners:v:12:y:2019:i:14:p:2734-:d:249154

Access Statistics for this article

Energies is currently edited by Ms. Agatha Cao

More articles in Energies from MDPI
Bibliographic data for series maintained by MDPI Indexing Manager ().