US 12,149,066 B2
DC power distribution system
Kenichi Fukuno, Tokyo (JP); Hayato Takeuchi, Tokyo (JP); Takaharu Ishibashi, Tokyo (JP); and Takushi Jimichi, Tokyo (JP)
Assigned to Mitsubishi Electric Corporation, Tokyo (JP)
Appl. No. 17/791,252
Filed by Mitsubishi Electric Corporation, Tokyo (JP)
PCT Filed Mar. 9, 2021, PCT No. PCT/JP2021/009210
§ 371(c)(1), (2) Date Jul. 7, 2022,
PCT Pub. No. WO2021/205801, PCT Pub. Date Oct. 14, 2021.
Claims priority of application No. JP2020-069495 (JP), filed on Apr. 8, 2020.
Prior Publication US 2023/0352930 A1, Nov. 2, 2023
Int. Cl. H02H 7/22 (2006.01); H02M 3/335 (2006.01); H02M 7/06 (2006.01); H02M 7/217 (2006.01)
CPC H02H 7/22 (2013.01) [H02M 3/33569 (2013.01); H02M 7/06 (2013.01); H02M 7/217 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A DC power distribution system comprising:
a plurality of power conversion devices which convert powers respectively supplied from a plurality of power grids to DC powers and output the DC powers;
one DC busbar through which the DC powers outputted from the plurality of power conversion devices flow;
a plurality of distribution lines branched from the DC busbar;
a plurality of first current interruption portions respectively connected between the plurality of power grids and the plurality of power conversion devices;
a plurality of second current interruption portions respectively connected between the plurality of power conversion devices and the DC busbar; and
a plurality of third current interruption portions respectively provided on the plurality of distribution lines, wherein
interruption current values of the plurality of third current interruption portions are set to smaller values than a maximum allowable current value of the power conversion device in which short-circuit current will reach the maximum allowable current value of the power conversion device in a shortest time among the plurality of power conversion devices.