A novel simulation technique for the analysis of digital asynchronous pulse width modulation

Mirkazemi-Moud, M.; Williams, B.W.; Green, Tim

doi:10.1109/28.315240

Cited by 14 publications

(1 citation statement)

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“…Moreover, the spectrum analysis of the output waveform is the important reference that selects the PWM mode. Typically, the spectrum is analyzed using FFT based on simulation study [6]. However, the FFT algorithm is susceptible to minor inaccuracies in the simulated waveform, and can also generate spurious results if leakage (Gibbs effect) and smearing are not carefully considered, and a frequency modulation ratio of carrier/fundamental must be a integer [7].…”

Section: Introductionmentioning

confidence: 99%

The Output Spectrum Analysis of High-Power Multilevel Voltage Source Converters using Double Fourier Series

Xiao

Liu³

et al.

2005 IEEE/PES Transmission &Amp;amp; Distribution Conference &Amp;amp; Exposition: Asia and Pacific

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This paper presents a theoretically analytical technique for determining the spectral components of highpower multilevel voltage source converters. The technique uses Double Fourier Series to analyze the output waveform of multilevel asynchronous asymmetrical regular sampling SVPWM converter. The 3-D spectrum representation of the SVPWM based on the extension geometrical-wall-model is given in this article. According to the analytical method of two-level SVPWM and the phase-shifted carrier PWM, the new DFS of multilevel SVPWM of single phase is obtained. In order to validate the theoretically analytical method, a six modules cascaded H-bridge converter model using PSCAD is built. By comparing the spectrum and waveform calculated with the simulation, the correctness of the analytical formulas has been proved. And the technique can act as the method of selection PWM. Moreover, the technique can be used to analyze the output waveform of the high-voltage and high-power FACTS equipments, such as SVG, SSSC, UPQC.

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Section: Introductionmentioning

confidence: 99%