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Enhanced independent pole control of hybrid MMC-HVDC system [PDF]
IEEE Transactions on Power Delivery, 2018 This paper presents an enhanced independent pole control scheme for hybrid modular multilevel converter (MMC) based on full bridge sub-module (FBSM) and half bridge sub-module (HBSM). A detailed analysis of power distribution between upper and lower arms
Ling, Weixing +3 more
core +4 more sources
Controller Architecture Design for MMC-HVDC
Advances in Electrical and Computer Engineering, 2014 Compared with high voltage direct current (HVDC), the primary and secondary systems of modular multilevel converter based HVDC (MMC-HVDC) are complicated.
ZHANG, B. +4 more
doaj +2 more sources
On Converter Fault Tolerance in MMC-HVDC Systems:A Comprehensive Survey [PDF]
IEEE Journal of Emerging and Selected Topics in Power Electronics, 2021 Since they were first proposed, modular multilevel converters have been strongly studied in the literature. Due to their high component count, some concerns regarding their reliability arise, and several fault-tolerance schemes have been proposed in ...
Cupertino, Allan Fagner +4 more
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Improved Control Strategy of MMC–HVDC to Improve Frequency Support of AC System
Applied Sciences, 2020 With the continuous development of power electronics technology, variable-speed offshore wind turbines that penetrated the grid system caused the problem of inertia reduction.
Zicong Zhang, Junghun Lee, Gilsoo Jang
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Studies of commutation failures in Hybrid LCC/MMC HVDC systems [PDF]
Global Energy Interconnection, 2020 A hybrid of line commutated converters(LCCs) and modular multi-level converters(MMCs) can provide the advantages of both the technologies. However, the commutation failure still exists if the LCC operates as an inverter in a hybrid LCC/MMC system.
An, Ting +6 more
core +4 more sources
Fault Detection and Classification in MMC-HVDC Systems Using Learning Methods. [PDF]
Sensors (Basel), 2020 In this paper, we explore learning methods to improve the performance of the open-circuit fault diagnosis of modular multilevel converters (MMCs). Two deep learning methods, namely, convolutional neural networks (CNN) and auto encoder based deep neural networks (AE-based DNN), as well as stand-alone SoftMax classifier are explored for the detection and
Wang Q +4 more
europepmc +8 more sources
Demonstration of Converter Control Interactions in MMC-HVDC Systems [PDF]
Electronics, 2022 Although the control of modular multi-level converters (MMCs) in high-voltage direct-current (HVDC) networks has become a mature subject these days, the potential for adverse interactions between different converter controls remains an under-researched challenge attracting the attention from both academia and industry.
Jinlei Chen +11 more
openaire +6 more sources
MMC-HVDC: Simulation and control system [PDF]
2016 IEEE Energy Conversion Congress and Exposition (ECCE), 2016 Simulation of modular multilevel converter (MMC) based high-voltage direct current (HVDC) systems assumes significance due to their growing popularity. It could assist with the design of hardware, control systems of MMC and HVDC networks, and power system topology.
Suman Debnath, Madhusudhan Chinthavali
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Start Control for the MMC-HVDC
IOP Conference Series: Materials Science and Engineering, 2019 Abstract This paper designs the control strategies and start procedure of MMC-HVDC. The start procedure consists of three stages, uncontrollable charging stage, controllable charging stage and power-raising stage. The current circuit is analysed and the equivalent circuit is obtained in uncontrolled charging stage.
Xiaoliang Zhang +5 more
openaire +1 more source
A Black Start Scheme Based on Modular Multilevel Control-High Voltage Direct Current
Energies, 2018 Modern society’s need for power and its dependence on power sources is increasing with its development. As a result the consequences of blackout accidents have become more serious. At present, only three sources can be regarded as black-start power
Zecheng Li, Guojun Tan
doaj +1 more source