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With the continuous development of high frequency inverter technology and multilevel inverter technology, all kinds of novel high frequency multilevel inverter are put forward and studied. And among them, the interleaved flyback three-level inverter (IFTLI) has a better work performance. In this paper, the control methods of single-phase IFTLI will be studied in-depth. Firstly, the instantaneous voltage...
A novel three-level buck-boost type inverter is proposed in this paper. It combines the series-parallel diode-capacitor network with the traditional buck-boost converter, plus the full bridge inverter as the back stage. The new inverter can boost or lower the input voltage. The operation principle of the inverter is investigated, theoretical waveforms are shown, relevant formulas are deducted. The...
Three-level AC switch unit is produced by two-level AC switch unit connected together in series manner. Basic three-level converter is produced by applying three-level AC switch unit in basic converter. Combination mode three-level converter is obtained by combining two basic three-level converters, and it is improved into combination mode three-level converter with input and output sharing the same...
A Zeta mode three-level AC/AC converter is proposed, the converter is available in high input voltages as well as in high power applications, and it also intended for use in applications where a sinusoidal output voltage of high quality is needed. It realizes the three-level voltage waveforms before output filter, which can get a better spectrum and reduce bulk of the filter. Compared with non-isolation...
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