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Harmonics elimination based on curve fitting method for modular multilevel converters

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Pubblicato in:The Institute of Electrical and Electronics Engineers, Inc. (IEEE) Conference Proceedings (2017), p. 1890-1895
Autore principale: Tohtayong, Majdee
Altri autori: Khan, Sheroz, Yaacob, Mashkuri, Yusoff, Siti Hajar, Ahmed, Musse Mohamud, Kadir, Kushsairy, Shah, Jawad, Aznan, Khairil Azhar, Aboadla, Ezzidin
Pubblicazione:
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Soggetti:
Newton-Raphson method
Mathematical analysis
Metal matrix composites
Converters
Curve fitting
Nonlinear equations
Queuing theory
Switching
Numerical analysis
Multilevel
Computer simulation
Eigenvalues
Environmental
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Abstract:Conference Title: TENCON 2017 - 2017 IEEE Region 10 Conference Conference Start Date: 2017, Nov. 5 Conference End Date: 2017, Nov. 8 Conference Location: Penang, Malaysia This paper presents the additional ways to figure out the switching angles for eliminating harmonic in Modular Multilevel Converters, MMCs. The switching angles equation is written in terms of nonlinear equation system, in general, one of the numerical method, named Newton-Raphson method, is used for this calculation procedure but the Newton-Raphson method takes more time for calculation that is difficult to implement the MMCs in a real-time control application. So that, numerous previous calculation methods are proposed to address this issue. To reduce the calculated time of switching angles, the Curve Fitting method is selected to assist the Newton-Raphson method and the idea of this combination method is presented in this paper. The calculation result of this combination and original Newton-Raphson method are compared and implemented in the 3-phase 7-level MMCs simulation to validate the calculation results. The Curve-Fitting can be used for calculation assisting of Newton-Raphson Method and obtains the calculation results faster than the using of lone Newton-Raphson method.
Fonte:Science Database