Detailed quantitative comparison of half-bridge modular multilevel converter modelling methods

Autor: Habibur Rahman, Yash Audichya, Lie Xu, Abdullah Emhemed, Deyang Guo, Graeme Burt, Grain P. Ased
Jazyk: angličtina
Rok vydání: 2019
Předmět:
DC short circuit fault operation
Computer science
TK
power system CAD
Energy Engineering and Power Technology
02 engineering and technology
010501 environmental sciences
01 natural sciences
Modelling methods
Control theory
Half bridge
0202 electrical engineering
electronic engineering
information engineering
averaged MMC models
offline HB-MMC models
0105 earth and related environmental sciences
power system harmonics
Basis (linear algebra)
switching convertors
business.industry
020208 electrical & electronic engineering
General Engineering
real-time simulation results
user-defined HB-MMC switching function model
half-bridge modular multilevel converter modelling methods
Function (mathematics)
Modular design
fault diagnosis
bridge circuits
fundamental dynamics
Function model
lcsh:TA1-2040
offline PSCAD simulations
harmonic dynamics
Harmonic
Thévenin's theorem
Thevenin equivalent model
business
lcsh:Engineering (General). Civil engineering (General)
steady-state fault condition
Software
Zdroj: The Journal of Engineering (2019)
University of Strathclyde
The 14th IET International Conference on AC and DC Power Transmission (ACDC 2018)
DOI: 10.1049/joe.2018.8770
Popis: This paper presents a detailed comparison of different modelling methods of the half-bridge modular multilevel converter (HB-MMC), namely, switching function, Thevenin equivalent and averaged, considering both MMC implementations (large and reduced number of cells). The theoretical basis that underpins each modelling method are discussed. Offline PSCAD simulations are used to validate user-defined switching function and averaged MMC models against the Thevenin equivalent model provided in PSCAD library for accuracy, considering steady-state and dc fault conditions. Furthermore, the RTDS based real-time simulation results of the user-defined HB-MMC switching function model are validated against the above mentioned offline models, considering steady-state and dc short circuit fault operations. Simulation speed and efficiency of different offline HB-MMC models being studied in this paper are compared. From comprehensive corroboration of different HB-MMC models presented in this paper, it has been found that the averaged, switching function and Thevenin equivalent models produce practically identical results during steady-state and dc faults. In detailed offline and real-time simulation studies where fundamental and harmonic dynamics are of interest, switching function model is found to be faster and computational efficient compared to the Thevenin equivalent model.
Databáze: OpenAIRE
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