US 11,837,962 B2
Control system and method for dual active bridge DC/DC converters
Iman Askarianabayaneh, Calgary (CA); Majid Pahlevaninezhad, Calgary (CA); and Andrew Michael Knight, Calgary (CA)
Assigned to UTI LIMITED PARTNERSHIP, Calgary (CA)
Filed by UTI LIMITED PARTNERSHIP, Calgary (CA)
Filed on Jun. 30, 2021, as Appl. No. 17/363,848.
Claims priority of provisional application 63/050,386, filed on Jul. 10, 2020.
Prior Publication US 2022/0014106 A1, Jan. 13, 2022
Int. Cl. H02M 3/335 (2006.01); H02M 1/00 (2006.01)
CPC H02M 3/33584 (2013.01) [H02M 1/0058 (2021.05)] 18 Claims
OG exemplary drawing
 
1. A control system for a dual active bridge (DAB) DC/DC converter, said control system comprising:
a feedback unit;
a compensator; and
a modulator,
wherein said feedback unit measures a transformer current from a bridge component of said DAB converter as input and wherein an inner loop reference current is subtracted from an output of said feedback unit;
wherein an output of said subtraction is passed to said compensator;
wherein said compensator determines control parameters for said modulator;
wherein said compensator determines control parameters using a geometric-sequence-control (GSC) method; and
wherein said modulator applies a modulation technique based on said control parameters to change a switching pattern to thereby control said transformer current and to thereby control a power flow in said circuit.