| Author(s): |
M. ÁNGELES MARTÍN PRATS
Electronic Engineering Department,
University of Seville, Camino de los descubrimientos s/n,
41092 Sevilla, Spain
JOSE IGNACIO LEÓN GALVÁN
Electronic Engineering Department,
University of Seville, Camino de los descubrimientos s/n,
41092 Sevilla, Spain
RAMÓN PORTILLO GUISADO
Electronic Engineering Department,
University of Seville, Camino de los descubrimientos s/n,
41092 Sevilla, Spain
JUAN MANUEL CARRASCO SOLÍS
Electronic Engineering Department,
University of Seville, Camino de los descubrimientos s/n,
41092 Sevilla, Spain
LEOPOLDO GARCÍA FRANQUELO
Electronic Engineering Department,
University of Seville, Camino de los descubrimientos s/n,
41092 Sevilla, Spain
|
| Abstract: |
This paper presents a fast and simple space vector modulation
algorithm for voltage source multilevel converters for calculating the
switching times and the space vectors using simple geometrical
considerations. This method provides the nearest switching vectors
sequence to the reference vector and calculates the on-state durations
of the respective switching state vectors without involving
trigonometric functions, look-up tables or coordinate system
transformations which increase the computational load corresponding to
the modulation of a multilevel converter. The low computational cost
of the proposed method is always the same and it is independent of the
number of levels of the converter. In addition, a new switching
sequence control technique is presented for reducing the ripple of the
DC-link voltage approximately in 66%. |
