Theoretical and experimental comparison of different control strategies for modular multilevel converters

2014 ◽  
Author(s):  
Xudan Liu ◽  
Andreas Lindemann ◽  
Hadi Amiri
Keyword(s):  
Control Strategies ◽  
Experimental Comparison ◽  
Multilevel Converters ◽  
Modular Multilevel Converters

Control strategies for modular multilevel converters driving cage machines

2017 ◽  
Author(s):  
Mauricio Espinoza ◽  
Matias Diaz ◽  
Enrique Espina ◽  
Christoph M. Hackl ◽  
Roberto Cardenas
Keyword(s):  
Control Strategies ◽  
Multilevel Converters ◽  
Modular Multilevel Converters

scholarly journals Fault-Tolerant Control Strategies and Capability without Redundant Sub-Modules in Modular Multilevel Converters

Energies ◽  
2019 ◽  
Vol 12 (9) ◽  
pp. 1726 ◽  
Author(s):  
Jinke Li ◽  
Jingyuan Yin
Keyword(s):  
Fault Tolerant ◽  
Control Strategies ◽  
Fault Tolerant Control ◽  
Mathematics Model ◽  
Multilevel Converters ◽  
Modular Multilevel Converters ◽  
Voltage Balance ◽  
And Performance ◽  
Level Converter ◽  
The Impact

Sub-module (SM) faults in modular multilevel converters (MMCs) without redundancies result in unbalanced converter output voltages and improper control of modulation due to an unequal number of SMs inserted between the different phase-legs. The derived mathematics model of the MMC demonstrates the impact of the SM fault in the circulating currents and capacitor voltages. For achieving the SM fault-tolerance, detailed analysis of the MMC’s electrical quantities under SM fault-tolerant algorithms is provided together with two modulation reconfiguration techniques for maintaining voltage balance. Fault-tolerant abilities of the two modulation algorithms are also discussed and defined. Simulation results from a 21-level converter and experimental work in a three-phase five-level converter demonstrate the feasibility and performance of the proposed fault-tolerant control strategies.

scholarly journals Small Scale Modular Multilevel Converter for Multi Terminal DC Networks Applications: System Control Validation

2018 ◽  
Author(s):  
Elie Talon Louokdom ◽  
Serge Gavin ◽  
Daniel Siemaszko ◽  
Frédéric Biya-Motto ◽  
Bernard Essimbi Zobo ◽  
...  
Keyword(s):  
Control Strategies ◽  
System Level ◽  
Small Scale ◽  
System Control ◽  
Digital Control System ◽  
Multilevel Converter ◽  
Multilevel Converters ◽  
Modular Multilevel Converters ◽  
Set Up ◽  
Reduced Scale

This paper presents the design and implementation of a digital control system for modular multilevel converters (MMC) and its use in a 5-kW small scale prototype. To achieve higher system control reliability and multi-functionality, the proposed architecture has been built with an effective split of the control tasks between a master controller and six slave controllers, one for each of the six arms of the converter. The MMC prototype have been used for testing both converter and system level controls in a reduced scale laboratory set up of a Multi-Terminal DC transmission network (MTDC). The whole control has been tested in order to validate the proposed control strategies. The tests performed at system level allowed to explore the advantages of using an MMC in a MTDC system.

scholarly journals Small Scale Modular Multilevel Converter for Multi Terminal DC Networks Applications: System Control Validation

2018 ◽  
Author(s):  
Elie Talon Louokdom ◽  
Serge Gavin ◽  
Daniel Siemaszko ◽  
Frédéric Biya-Motto ◽  
Bernard Essimbi Zobo ◽  
...  
Keyword(s):  
Control Strategies ◽  
System Level ◽  
Small Scale ◽  
System Control ◽  
Digital Control System ◽  
Multilevel Converter ◽  
Multilevel Converters ◽  
Modular Multilevel Converters ◽  
Set Up ◽  
Reduced Scale

This paper presents the design and implementation of a digital control system for modular multilevel converters (MMC) and its use in a 5-kW small scale prototype. To achieve higher system control reliability and multi-functionality, the proposed architecture has been built with an effective split of the control tasks between a master controller and six slave controllers, one for each of the six arms of the converter. The MMC prototype have been used for testing both converter and system level controls in a reduced scale laboratory set up of a Multi-Terminal DC transmission network (MTDC). The whole control has been tested in order to validate the proposed control strategies. The tests performed at system level allowed to explore the advantages of using an MMC in a MTDC system.

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