A Theoretical Analysis of the Harmonic Content of PWM Waveforms for Multiple-Frequency Modulators (CROSBI ID 177392)
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Podaci o odgovornosti
Odavić, Milijana ; Sumner, M. ; Zanchetta, P. ; Clare, J.C.
engleski
A Theoretical Analysis of the Harmonic Content of PWM Waveforms for Multiple-Frequency Modulators
This paper theoretically identifies the harmonic components of a carrier-based pulsewidth-modulated (PWM) voltage-source converter (VSC) output voltage when the modulating wave includes fundamental and baseband harmonic components. This occurs, for example, when a VSC is used as an active power filter. The general analytical solution provided can be applied with a minimum additional mathematical effort to any harmonic combination in the modulation signal. The analysis undertaken in this paper determines how the fundamental and low-order harmonics (in the modulation signal) interact with the carrier to produce the low (and high) order frequencies in the PWM VSC output voltage. The analysis is based on a double Fourier series expansion in two variables. This approach to harmonic identification is evaluated by a comparison with a fast Fourier transform analysis of simulated PWM waveforms.
active power filter; harmonic analysis; pulsewidth modulation (PWM); voltage-source converter (VSC)
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Podaci o izdanju
25 (1)
2010.
131-141
objavljeno
0885-8993
10.1109/TPEL.2009.2026751