Next Article in Journal
Disintegration of Wastewater Activated Sludge (WAS) for Improved Biogas Production
Next Article in Special Issue
A Simplified Model Predictive Control for T-Type Inverter with Output LC Filter
Previous Article in Journal
Formal Asymptotic Analysis of Online Scheduling Algorithms for Plug-In Electric Vehicles’ Charging
Previous Article in Special Issue
A Highly Efficient Single-Phase Three-Level Neutral Point Clamped (NPC) Converter Based on Predictive Control with Reduced Number of Commutations
Article Menu
Issue 1 (January-1) cover image

Export Article

Open AccessArticle

A Novel Fault-Tolerant Control of Modular Multilevel Converter under Sub-Module Faults Based on Phase Disposition PWM

1
Institute of Electrical Engineering, Chinese Academy of Sciences, Beijing 100044, China
2
National Active Distribution Network Technology Research Center, Beijing Jiaotong University, Beijing 100044, China
*
Author to whom correspondence should be addressed.
Energies 2019, 12(1), 20; https://doi.org/10.3390/en12010020
Received: 14 November 2018 / Revised: 10 December 2018 / Accepted: 18 December 2018 / Published: 21 December 2018
  |  
PDF [17312 KB, uploaded 2 January 2019]
  |  

Abstract

Each arm of modular multilevel converter (MMC) consists of a large number of sub-module (SM) units. However, it also increases the probability of SM failure during the long-term system operation. Focusing on the fault-tolerant operation issue for the MMC under SM faults, the traditional zero-sequence voltage injection fault-tolerant control algorithm is analyzed detailed and its disadvantages are concluded. Based on this, a novel fault-tolerant control strategy based on phase disposition pulse-width modulation (PD-PWM) is proposed in this paper, which has three main benefits: (i) it has carrier and modulation wave dual correction mechanism, which control ability is more higher and flexible; (ii) it only needs to inject zero-sequence voltage in half a cycle of the modulation wave, which simplifies the complexity of traditional zero-sequence voltage injection control algorithms and much easier for implement; (iii) furthermore, the zero-sequence voltage can even be avoided injecting under the symmetrical fault conditions. Finally, the effectiveness of the proposed control strategy is verified with the simulation and experiment studies under different fault conditions. View Full-Text
Keywords: modular multilevel converter (MMC); Sub-module (SM) fault; fault-tolerant control; Phase Disposition PWM modular multilevel converter (MMC); Sub-module (SM) fault; fault-tolerant control; Phase Disposition PWM
Figures

Figure 1

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
SciFeed

Share & Cite This Article

MDPI and ACS Style

Yin, J.; Wu, W.; Wei, T.; Wu, X.; Huo, Q. A Novel Fault-Tolerant Control of Modular Multilevel Converter under Sub-Module Faults Based on Phase Disposition PWM. Energies 2019, 12, 20.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Energies EISSN 1996-1073 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top