A new control law of an Input Parallel Output Serie DC-AC multi-cell converter is proposed to cancel the CM noise while keeping the DM noise low. The control law called Interleaved Symmetrical Unipolar respects the conditions studied and detailed in this paper to achieve CM noise cancellation. The conditions are generalized whatever an even number of cells in series. The results are validated against experiments and show reduction of the CM choke volume in comparison to a conventional Interleaved Bipolar control law.
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Salomez et al. (2024) studied this question.
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