Abstract

BELTRAN TELLES, Aurelio et al. Energy quality analysis of CH-bridge inverter and SPWM control. Energética [online]. 2020, vol.41, n.1  Epub Jan 01, 2020. ISSN 1815-5901.

This document shows the results obtained by implementing a multicarrier SPWM level displacement control system to a single-phase seven level cascade H-bridge inverter. The tests consisted of using three multicarrier methods with different modulation rates in frequency and for every one different modulation rates in amplitude. Obtaining a set of results of the values of the harmonics present in them for each method. The control algorithm was programmed using SolidThinking Embed software and the digital signal processor TMDSCNCD28379D from Texas Instruments is used as an interface with the inverter. Experimental results show that energy quality varies using low frequency or amplitude modulation rates with respect to high frequency modulation rates and amplitude modulation rates close to unity. The results indicate that energy quality improves with increasing modulation rates in frequency or amplitude.

Keywords : Cascade H Bridge; digital signal processor; Energy quality; SPWM control; Total Harmonic Distortion.

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