US 12,170,457 B2
Device for controlling line connection type fuel cell system and method for the same
Yong Doo Son, Incheon (KR); Jung Tak Kang, Incheon (KR); Won Jung Kim, Seoul (KR); and Jun Seok Seo, Gyeonggi-do (KR)
Assigned to Hyundai Motor Company, Seoul (KR); and Kia Corporation, Seoul (KR)
Filed by Hyundai Motor Company, Seoul (KR); and Kia Corporation, Seoul (KR)
Filed on Aug. 20, 2022, as Appl. No. 17/892,063.
Claims priority of application No. 10-2021-0149257 (KR), filed on Nov. 2, 2021.
Prior Publication US 2023/0133428 A1, May 4, 2023
Int. Cl. H02J 9/00 (2006.01); H01M 8/04537 (2016.01); H01M 8/04858 (2016.01); H02J 7/00 (2006.01); H02J 9/06 (2006.01); H01M 16/00 (2006.01)
CPC H02J 9/062 (2013.01) [H01M 8/04619 (2013.01); H01M 8/0488 (2013.01); H01M 8/0491 (2013.01); H02J 7/0063 (2013.01); H01M 16/006 (2013.01); H01M 2220/20 (2013.01); H01M 2250/20 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A device for controlling a line connection type fuel cell system, the device comprising:
a plurality of fuel cell modules in electrical communication with a load and configured to self-generate power; and
a control device including:
an Alternating Current (AC) voltage generator in electrical communication with the load; and
a controller in communication with the plurality of fuel cell modules and the AC voltage generator, wherein the controller configured to:
operate the line connection type fuel cell system in a power system mode in which self-generated power from the plurality of fuel cell modules and power from an external power system are each supplied to the load; and
when operating the line connection type fuel cell system in the power system mode and the power supplied from the external power system is cut off:
activate the AC voltage generator to generate an AC voltage corresponding to the power supplied from the external power system; and
control the plurality of fuel cell modules to generate a current in synchronization with the AC voltage;
wherein the AC voltage generator does not generate a current corresponding to the power supplied from the external power system.