We propose Star-Light Converter that overcomes the weak points of MMC for BTB. Total quantity of capacitors, cell numbers of the Star-Light Converter, and DC currents are almost half those of MMC. The Star-Light Converter has a structure in which cascaded converters are connected between a pair of three-phase converters. We expect Star-Light Converters will be utilized not only in extremely high power applications, but also in low power applications.
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