PUBLICATIONS

Vienna rectifiers, which are nongenerative-boost types of rectifiers, are used in grid-connected applications with a unity power factor

such as telecommunication systems and wind turbine systems. These rectifiers are advantageous in that they have low total harmonic

distortion and efficiency. There are many switching methods, which are different from those of threelevel topologies, for Vienna

rectifiers. In this paper, we propose a carrier-based discontinuous pulse width modulation (CB-DPWM) method. This method is simple

compared to the discontinuous PWM (DPWM) method for Vienna rectifiers based on space vectors and guarantees normal rectifier

operation for all modulation index (Ma ) values. We perform experiments to verify the suitability and performance of the proposed

CB-DPWM method.