Enhanced phase-shifted PWM carrier disposition for interleaved voltage-source inverters

Gabriel J. Capella*, Josep Pou, Salvador Ceballos, Georgios Konstantinou, Jordi Zaragoza, Vassilios G. Agelidis

*Autor correspondiente de este trabajo

Producción científica: Contribución a una revistaArtículorevisión exhaustiva

47 Citas (Scopus)

Resumen

This letter presents a novel implementation of pulse width modulation that improves the quality of the line-to-line output voltages in interleaved multiphase voltage-source inverters (VSIs). In multiphase VSIs with n interleaved parallel-connected legs, the best single-phase output voltage is achieved when the carriers are evenly phase shifted. However, switching among nonadjacent levels can be observed at regular intervals in the line-to-line voltages, causing bad harmonic performance. With the proposed method, switching in the line-to-line voltages happens exclusively between adjacent levels. The modulator utilizes two sets of n evenly phase-shifted carriers that are dynamically allocated. Because of its generality, the proposed implementation is valid for any number of phases and any number of legs in parallel. A MATLAB/Simulink model has been set up for simulation purposes. Selected experimental results obtained from a three-phase VSI made up with two and three legs in parallel per phase are reported, confirming the enhancement attained with the proposed implementation.

Idioma originalInglés
Número de artículo6860259
Páginas (desde-hasta)1121-1125
Número de páginas5
PublicaciónIEEE Transactions on Power Electronics
Volumen30
N.º3
DOI
EstadoPublicada - 1 mar 2015

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