Patent ID: 9042145
Filing Date: 2015-05-26
Classification: H02M

Abstract:
1. A circuit configuration, comprising: a DC source having a first DC source and a second DC source, said first DC source and said second DC source each providing a DC voltage and each having a positive output and a negative output; a step-up converter having a positive output and a negative output, said step-up converter being a common step-up converter for boosting both the DC voltage provided by said first DC source and the DC voltage provided by said second DC source, said step-up converter including at least one switching element connected between said first and second DC sources; and an intermediate circuit capacitor connected between said positive output and said negative output of said step-up converter; said positive output of said first DC source being connected to said positive output of said step-up converter, and said negative output of said second DC source being connected to said negative output of said step-up converter; said negative output of said first DC source being non-switchably and DC connected to said negative output of said step-up converter, and said positive output of said second DC source being non-switchably and DC connected to said positive output of said step-up converter; said step-up converter including a series circuit of a first inductance and a first rectifier element connected between said positive output of said first DC source and said positive output of said step-up converter; said step-up converter including a series circuit of a second inductance and a second rectifier element connected between said negative output of said second DC source and said negative output of said step-up converter; and said at least one switching element of said step-up converter being connected between said first DC source and said second DC source in such a manner that the two DC sources are in series when all of said at least one switching element are closed and the two DC sources are in parallel when all of said at least one switching element are open.