In this paper, a single-phase cascaded H-bridge (CHB) multilevel inverter having s DC sources and a number of levels l = 2s+1 with s = 2n n = 1, 2, 3, . . . is considered, and a method to eliminate n + 1 harmonics and their respective multiple from its output voltage waveform is presented. The proposed procedure is compared with the conventional selective harmonic elimination (SHE) technique, and its better performances, in terms of total harmonic distortion (THD), are shown. The procedure requires low computational cost and low memory occupation, allowing real-time implementation.
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