US 12,074,525 B2
Dual active bridge converter control with switching loss distribution
Shenli Zou, Redondo Beach, CA (US); Zahra Mohajerani, Los Angeles, CA (US); Maziar Mobarrez, Irvine, CA (US); and Lixiang Wei, Irvine, CA (US)
Assigned to RIVIAN IP HOLDINGS, LLC, Irvine, CA (US)
Filed by RIVIAN IP HOLDINGS, LLC, Irvine, CA (US)
Filed on May 20, 2022, as Appl. No. 17/749,492.
Claims priority of provisional application 63/240,137, filed on Sep. 2, 2021.
Prior Publication US 2023/0064783 A1, Mar. 2, 2023
Int. Cl. H02M 3/335 (2006.01); H02M 1/00 (2006.01)
CPC H02M 3/33573 (2021.05) [H02M 1/0054 (2021.05); H02M 3/33576 (2013.01)] 20 Claims
OG exemplary drawing
 
11. A system for controlling a dual active bridge converter, comprising:
memory storing instructions;
output ports; and
control circuitry coupled to the memory and the output ports and configured to execute the instructions to:
provide switch control signals via the output ports to first, second, third, and fourth switches of at least one bridge of the dual active bridge converter;
cause the switches to switch according to a first switching sequence comprising:
sequentially stepping through a first stage during which the first and fourth switches are enabled, a second stage during which the first and third switches are enabled, a third stage during which the second and third switches are enabled, and a fourth stage during which the second and fourth switches are enabled;
cause the switches to switch according to a second switching sequence, distinct from the first switching sequence, comprising:
sequentially stepping through a fifth stage during which the first and fourth switches are enabled, a sixth stage during which the second and fourth switches are enabled, a seventh stage during which the second and third switches are enabled, and an eighth stage during which the first and third switches are enabled; and
repetitively toggle, based on a swapping frequency, between causing the switches to switch according to the first switching sequence and causing the switches to switch according to the second switching sequence to distribute switching losses among the switches.