US 12,407,273 B2
Solid-state autotransformer
Steven Schulz, Torrance, CA (US)
Assigned to Rivian IP Holdings, LLC
Filed by Rivian IP Holdings, LLC, Irvine, CA (US)
Filed on Dec. 11, 2023, as Appl. No. 18/535,205.
Prior Publication US 2025/0192695 A1, Jun. 12, 2025
Int. Cl. H02M 7/537 (2006.01); B60L 15/00 (2006.01); H02M 1/088 (2006.01); H02M 1/44 (2007.01)
CPC H02M 7/537 (2013.01) [H02M 1/088 (2013.01); H02M 1/44 (2013.01); B60L 15/007 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A system for energy conversion, comprising:
a first switch coupled to a first line in which an alternating current signal is conveyed;
a second switch coupled to a second line in which the alternating current signal is conveyed, and to the first switch, the first switch to, responsive to a magnitude of a first voltage from the first line to a terminal exceeding a magnitude of a second voltage from the second line to the terminal, pass current from the first line to the terminal;
the second switch to, responsive to the magnitude of the second voltage exceeding the magnitude of the first voltage, pass current from the second line to the terminal; and
a controller to:
responsive to a determination of a first grid condition, decouple a grid from the first line without decoupling the first line or a second line from a split-phase device or the first switch;
responsive to a determination of a second grid condition, couple the grid to the first line without decoupling the first line or a second line from the split-phase device or the first switch;
generate control signals corresponding to a first duty cycle for the first switch and a second duty cycle for the second switch;
adjust the first duty cycle based on a magnitude of a current flowing to the terminal wherein the current flows to the terminal from a connection, the connection between the first switch and the second switch, wherein:
a duration of an active portion of the first duty cycle is equal to a duration of the active portion of the second duty cycle; and
the duration of the active portion of the first duty cycle is less than 0.5;
receive an indication of a battery condition for a battery of an electric vehicle;
receive an indication of a grid condition; and
switch the first switch and the second switch based on the battery condition and the grid condition.