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Frequency Domain Analysis of Space Vector Modulated Four-switch
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| Author(s) |
J. Klima |
| Abstract |
The paper presents harmonic analysis of the space vector PWM waveform of the four-switch voltage
source inverter feeding an induction motor drive.The analysis is based on a novel decomposition
technique and on the Laplace transform of the voltage space vectors.As the phase voltages are in
principle asymmetrical,first the asymmetrical space vector sequence is expressed in symmetrical
form.It is shown that the asymmetrical space vector sequence can be expressed with two symmetrical
sequences.First sequence has vectors that are mutually shifted by 600 as in conventional inverter,and
second sequence has vectors shifted by 1800 and amplitudes are one half of the first sequence.Then the
Laplace transform of the symmetrical space vector sequence is expressed.Using the relation between
the Laplace transform of the periodic waveform and Fourier coefficients we can find the coefficients
of the Fourier series.From the analytical relations we can derive harmonic spectra for different space
vector modulation technique. |
| Download |
| Filename: | EPE2001 - PP00005 - Klima.pdf |
| Filesize: | 429 KB |
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| Type |
Members Only |
| Date |
Last modified 2004-03-09 by System |
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