Single-phase six-switching-group MMC AC-AC converter and control method thereof
A technology of six-switch group and switch group is applied in the field of single-phase six-switch group MMC AC-AC converter and its control, which can solve problems such as increasing engineering cost, and achieve the effect of solving the problem of voltage equalization and reducing engineering cost.
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[0019] In order to further illustrate the content and features of the present invention, the specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. But the implementation of the present invention is not limited thereto.
[0020] refer to figure 1 , the single-phase six-switch group MMC AC-AC converter of the present invention includes an AC input power supply u i , input inductance L i , the first bridge arm, the second bridge arm, the first capacitor C 1 and the load; the first bridge arm and the second bridge arm are each provided with an upper switch group (H 1 、H 2 ), medium switch group (M 1 , M 2 ), the lower switch group (L 1 , L 2 ), the first inductance (L H1 , L H2 ), the second inductance (L L1 , L L2 ) in series; the upper switch group H of the first bridge arm 1 consists of N power switching units (SM H11 , SM H12 ,...,SM H1N ) in series, the middle switch group M of the first ...
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