A novel optimized pulse pattern for modular multilevel converters in high power applications
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Universidade Federal de Minas Gerais
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The main objective of this work is to propose a modulation strategy focused in minimization of total harmonic distortion (THD) for high power modular multilevel converters. A mathematical approach is given in order to write the Fourier series for a general N levels stepped voltage waveform sythesized by the converter. The study shows how an optimization system using equations for each harmonic component can be drawn in order to minimize THD. A ±200 kV DC, 400 MW inverter based on MMC topology is simulated on PSIM software using the optimized parameters. Three setting cases are presented in order to validade the study. Simulation shows that the proposed modulation can fit total harmonic distortion and individual frequency components into predetermined standards.
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Conversores eletrônicos, Fourier, Séries de
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Harmonic analysis , Frequency modulation , Switches , Modular multilevel converters , Harmonic distortion , Fourier series, Modular Multilevel Converters , Optimized Pulse Patterns , Total Harmonic Distortion , Minimization, High Power , High-power Applications , Multilevel Converter , Modular Multilevel Converter , Pulse Pattern , Inverter , Fourier Series , Modulation Scheme , Voltage Waveforms , Harmonic Components , Harmonic Distortion , Total Harmonic Distortion , Fundamental Frequency , Pulse Width , Angular Frequency , Square Wave , Voltage Levels , Submodule , Modulation Index , Phase Voltage , High Voltage Direct Current , Low Harmonic Distortion , Harmonic Order , Patterns In Order , Set Of Angles , Switching Pattern , Low Total Harmonic Distortion , Power Quality , Active Power Control, The submodules can operate in fundamental frequency minimizing switching losses, while the converter's output waveform can be manipulated in order to minimize total harmonic distortion
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https://ieeexplore.ieee.org/document/8257332