US 11,791,628 B2
SST system with multiple LVDC outputs
Gabriel Ignacio Ortiz, Schlieren (CH); Stephane Isler, Faucigny (FR); Juergen Steinke, Albbruck (DE); and Francisco Canales, Baden-Dättwil (CH)
Assigned to Hitachi Energy Switzerland AG, Baden (CH)
Appl. No. 17/916,473
Filed by Hitachi Energy Switzerland AG, Baden (CH)
PCT Filed Mar. 30, 2021, PCT No. PCT/EP2021/058322
§ 371(c)(1), (2) Date Sep. 30, 2022,
PCT Pub. No. WO2021/198270, PCT Pub. Date Oct. 7, 2021.
Claims priority of application No. 20166634 (EP), filed on Mar. 30, 2020.
Prior Publication US 2023/0178982 A1, Jun. 8, 2023
Int. Cl. H02J 1/12 (2006.01); H02J 1/08 (2006.01); H02J 1/10 (2006.01); H02M 3/00 (2006.01)
CPC H02J 1/12 (2013.01) [H02J 1/082 (2020.01); H02J 1/106 (2020.01); H02M 3/01 (2021.05)] 20 Claims
OG exemplary drawing
 
1. An electrical interconnection circuit for a solid-state-transformer (SST) system, the interconnection circuit comprising:
a plurality of medium voltage direct current (MVDC) to low voltage direct current (LVDC) direct current to direct current (DC/DC) converters;
a plurality of independent LVDC buses respectively connected to one of the MVDC to LVDC DC/DC converters; and
at least one interconnecting DC/DC converter connecting at least two of the independent LVDC buses in order to ensure equal power demand from each MVDC to LVDC DC/DC converters;
wherein the at least one interconnecting DC/DC converter is configured to re-route power between the plurality of independent LVDC buses; and
wherein a power rating of the at least one interconnecting DC/DC converter is set according to power to be rerouted from other LVDC buses via the interconnecting DC/DC converter.