Back to Search
Start Over
Analysis and Performance of Five-Phase Piecewise-Random-Switching-Frequency Space Vector Pulse Width Modulation.
- Source :
- IEEE Transactions on Energy Conversion; Sep2021, Vol. 36 Issue 3, p2339-2347, 9p
- Publication Year :
- 2021
-
Abstract
- In order to better address the problem of many high-order harmonics’ concentration in the output voltage, a novel five-phase piecewise-random-switching-frequency space vector pulse width modulation (PRSF-SVPWM) strategy is proposed for a five-phase voltage source inverter. Compared to the conventional random switching frequency SVPWM (RSF-SVPWM), the entire fundamental period of this method is divided into two half-fundamental periods, so the original switching frequency in a single fundamental period is randomized in segments respectively. During this process, parameters named the offset frequency and random frequency are defined and assigned reasonably. In this way, high-frequency harmonics in one period are spread into a wider range. Subsequent simulation and experimental results verify that the proposed random modulation strategy can further reduce amplitudes of harmonics near switching frequency and its integer multiples, even though within a narrow switching frequency range, and a satisfactory effect of high-order harmonic dispersion is finally obtained, which contributes to the application and popularization of random pulse width modulation strategies. [ABSTRACT FROM AUTHOR]
- Subjects :
- PULSE width modulation
VECTOR spaces
IDEAL sources (Electric circuits)
Subjects
Details
- Language :
- English
- ISSN :
- 08858969
- Volume :
- 36
- Issue :
- 3
- Database :
- Complementary Index
- Journal :
- IEEE Transactions on Energy Conversion
- Publication Type :
- Academic Journal
- Accession number :
- 153128058
- Full Text :
- https://doi.org/10.1109/TEC.2020.3046835