Alternative Feedback Quantizer Using Space Vector Modulation

Abstract

Feedback Quantizer is a closed-loop modulation scheme with low harmonic content at low frequency and good tracking of the voltage reference at the fundamental frequency. In electrical systems where power converters and transformers interact, the modulation technique must be capable of not generating low-frequency harmonic components in order to avoid transformer saturation. This paper presents an alternative for applying FBQ using Space Vector Modulation to obtain higher accuracy in tracking the reference and improve the harmonic content of this technique at low sampling times. The simulated results show the fulfillment of the objectives satisfactorily.

Improved Feedback Quantizer with Discrete Space Vector

“…So far, a slight improvement in the performance of the FBQ scheme has been achieved using the SVM modulation scheme, but it generates considerable noise at PWM voltages and still obtains a variable switching frequency [ 27 ].…”