Modularized H-bridge cascade multilevel mutual-balance power electronic transformer
A technology of power electronics and transformers, applied in the field of transformers, can solve the problem of not having three-phase electric energy automatic mutual balance, etc., and achieve the effect of convenient three-phase independent control, realizing modular production, and reducing the number of components used.
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[0037] The present invention will be described in further detail below in conjunction with the accompanying drawings.
[0038] Such as Figure 1-Figure 3 , the present invention provides a modular H-bridge cascaded multi-level mutual balanced power electronic transformer, the power electronic transformer includes an AC / DC rectifier, a DC / AC converter, a high-frequency transformer, and an AC / DC converter , a low-voltage level DC bus parallel module and a DC / AC inverter; the power frequency AC input signal is converted into a first DC voltage signal by the AC / DC rectifier, and the DC / AC converter converts the first DC voltage The signal is modulated into a high-frequency AC square-wave signal, and the high-frequency AC square-wave signal passes through the high-frequency transformer to realize voltage level conversion and electromagnetic isolation, and the AC / DC converter converts the high-frequency AC output from the high-frequency transformer to The square wave signal is conv...
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