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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...
Zeta mode three-level AC/AC converter can realize three-level voltage before output filter, which can get a better spectrum and reduce bulk of the filter. Compared with non-isolation and low or middle frequency isolation AC/DC/AC converters, it is single stage. And compared with Buck non-isolation AC/AC converter which can only realize buck output voltage, it can realize buck and boost output voltage...
At present, the primary methods of realizing AC/AC voltage transformation are frequency transformer, AC-DC-AC converter, matrix converter, high-frequency link AC/AC converters and single-stage AC/AC converters. In areas of high power conversion, taking into account to converter's cost and the quality of output voltage, bridge mode AC/AC converter has some advantages. This converter can realize electrical...
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