US 11,757,371 B1
Pulse-width modulation for high-efficiency power conversion
Mohammad Nanda Marwali, Irvine, CA (US); and Muhammad Mobeen Mahmood, Irving, TX (US)
Assigned to Rivian IP Holdings, LLC, Irvine, CA (US)
Filed by Rivian IP Holdings, LLC, Irvine, CA (US)
Filed on Aug. 2, 2022, as Appl. No. 17/879,562.
Int. Cl. H02M 1/42 (2007.01); H02M 7/219 (2006.01); H02M 7/527 (2006.01); H02M 7/5395 (2006.01); H02M 7/217 (2006.01)
CPC H02M 7/527 (2013.01) [H02M 1/4258 (2013.01); H02M 7/5395 (2013.01); H02M 1/42 (2013.01); H02M 7/217 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method for generating a split-phase power signal via a power converter comprising a first leg, a second leg, and a third leg, wherein the method comprises:
switching, at a first frequency, the first leg comprising a first switch and a second switch of a first type to generate a first signal;
switching, at a second frequency, the second leg comprising a third switch and a fourth switch of a second type to generate a second signal, wherein:
the first frequency is higher than the second frequency,
the second frequency is associated with a fundamental frequency of a power system,
the first type of switch is configured to switch at the first frequency, and the second type of switch is configured to switch at the second frequency;
generating a neutral leg control signal for switching the third leg comprising a fifth switch and a sixth switch of a third type;
switching, by the neutral leg control signal, the third leg to generate a third signal; and
generating, based on the first signal, the second signal, and the third signal, the split-phase power signal.