A direct method and algorithm for determining the harmonic content of sinusoidal PWM waveforms suitable to low-level DSP and microcontrollers

Author

Dillard, William ; Leedy, Alec ; Nelms, R. Mark

Author_Institution

Dept. of ECE, Auburn Univ., AL, USA

Volume

2

fYear

2005

fDate

2-6 Oct. 2005

Firstpage

1267

Abstract

A method for exact calculation of the harmonic content of the classic three-level sinusoidal PWM waveform for any modulation index is presented. Unlike methods that are based on the double Fourier series and Bessel functions, this method uses only the cosine function and linear algebra operators. As such it is well suited for both simulations and real-time control algorithms. For applications using low-level DSP´s and microcontrollers, an approximate method is provided.

Keywords

digital signal processing chips; harmonic analysis; microcontrollers; pulse width modulation; waveform analysis; Bessel functions; Fourier series; cosine function; harmonic content; linear algebra operators; low-level DSP; microcontrollers; modulation index; sinusoidal PWM waveforms; Digital signal processing; Fourier series; Frequency; Linear algebra; Microcontrollers; Pulse shaping methods; Pulse width modulation; Shape; Space vector pulse width modulation; Switches;

fLanguage

English

Publisher

ieee

Conference_Titel

Industry Applications Conference, 2005. Fourtieth IAS Annual Meeting. Conference Record of the 2005

ISSN

0197-2618

Print_ISBN

0-7803-9208-6

Type

conf

DOI

10.1109/IAS.2005.1518522

Filename

1518522