A Modified One-Cycle-Control Method for Modular Multilevel Converters

Xu Tian, Yue Ma, Jintao Yu, Cong Wang and Hong Cheng
Additional contact information
Xu Tian: School of Mechanical Electronic and Information Engineering, China University of Mining & Technology (Beijing), Beijing 100083, China
Yue Ma: School of Mechanical Electronic and Information Engineering, China University of Mining & Technology (Beijing), Beijing 100083, China
Jintao Yu: School of Mechanical Electronic and Information Engineering, China University of Mining & Technology (Beijing), Beijing 100083, China
Cong Wang: School of Mechanical Electronic and Information Engineering, China University of Mining & Technology (Beijing), Beijing 100083, China
Hong Cheng: School of Mechanical Electronic and Information Engineering, China University of Mining & Technology (Beijing), Beijing 100083, China

Energies, 2019, vol. 12, issue 1, 1-17

Abstract: In this paper, a new One-Cycle-Control (OCC) method is designed for a modular multilevel converter (MMC) based on the principle of the equivalent resistance constant. The proposed controller has a simple structure and a small amount of calculation by cancelling the current inner loop proportional integral (PI) controller and the inverse transform in the traditional direct-quadrature (DQ) control. Compared to the traditional OCC controller, the new one separates the control method from the modulation strategy, making it possible to use not only carrier-based pulse-width modulation (PWM), but also nearest level modulation PWM to generate drive signals. Besides, the independent control of the active and the reactive power is implemented by injecting a reference current with the same phase of the supply voltage or a reference current which lags the supply voltage by π/2 into the controller, so the converter can operate in four quadrants and it can work in either a grid-connect or off-grid environment. The feasibility and the performance of the proposed OCC method have been validated by both the simulation under the MATLAB/SIMULINK (R2012a) environment and experimental results.

Keywords: modular multilevel converter; One-Cycle-Control; four-quadrant operation; carrier-based PWM; nearest level modulation PWM (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: View citations in EconPapers (2)

Downloads: (external link)
https://www.mdpi.com/1996-1073/12/1/157/pdf (application/pdf)
https://www.mdpi.com/1996-1073/12/1/157/ (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:1:p:157-:d:194625

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 ().