A power converter includes an active front end (AFE) that is coupled by a dc link stage to a plurality of H-bridge inverters. One or more multi-phase electro-magnetic energy conversion devices, such as transformers or electric machines, with open windings that are connected to only the AFE or only the H-bridge inverters or to both the AFE and H-bridge inverters, provide a regenerative or partial regenerative power converter.
https://app.acclaimip.com/pdf/P8U34_AMO_eBxTeGFQw7--oXnvJHdV9XYHtpaT4/US9036379B2
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