US 11,901,807 B2
Bypass circuit, power system control method, and non-transitory computer readable medium
Yasuhiro Kanekiyo, Yokohama Kanagawa (JP); Qiang Lin, Kawasaki Kanagawa (JP); Hiroshi Uno, Kawasaki Kanagawa (JP); and Tetsu Shijo, Tokyo (JP)
Assigned to Kabushiki Kaisha Toshiba, Tokyo (JP)
Filed by KABUSHIKI KAISHA TOSHIBA, Tokyo (JP)
Filed on Feb. 28, 2022, as Appl. No. 17/682,935.
Claims priority of application No. 2021-150582 (JP), filed on Sep. 15, 2021.
Prior Publication US 2023/0081126 A1, Mar. 16, 2023
Int. Cl. H02M 1/32 (2007.01); H02S 40/38 (2014.01); H02M 3/158 (2006.01); H02J 7/35 (2006.01)
CPC H02M 1/32 (2013.01) [H02J 7/35 (2013.01); H02M 3/158 (2013.01); H02S 40/38 (2014.12)] 15 Claims
OG exemplary drawing
 
1. A bypass circuit, comprising:
a switch configured to short-circuit between a first power conversion apparatus and a power storage apparatus, the switch being connected in parallel to a second power conversion apparatus, a third power conversion apparatus being connected in an input-side of the first power conversion apparatus, the third power conversion apparatus converting power which is generated from natural energy,
the first power conversion apparatus converting power converted by the third power conversion apparatus and outputting the converted power to a power distribution grid,
the second power conversion apparatus converting surplus power that has not been converted by the first power conversion apparatus and charging the power storage apparatus with the converted power, or converting power discharged from the power storage apparatus and supplying the converted power to the first power conversion apparatus; and
a controller configured to control opening and closing of the switch,
wherein the controller controls the switch based on a voltage that is output by the first power conversion apparatus,
the controller controls the switch based on a difference between the voltage that is output by the first power conversion apparatus and a first voltage,
a contact point between the switch and the first power conversion apparatus is connected to the power distribution grid via the first power conversion apparatus, and
the controller controls the switch based on a frequency of power that is output by the first power conversion apparatus.