Patent ID: 11881712
Assignee: FLUENCE ENERGY, LLC
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  Y | IPC H

Claim 13:
14. A system, comprising:
an arrangement;
a first network infeed; and
a second network infeed,
the first network infeed being connected to a first distribution via a first transformer and a first switch, and the second network infeed being connected to a second distribution via a second transformer and a second switch,, wherein:
the arrangement comprises:
at least one first converter system, configured to convert between alternating current and direct current; and
a second converter system, configured to convert between alternating current and direct current, direct current link circuits of the at least one first converter system and the second converter system being coupled, wherein the at least one first converter system is connected to a first distribution of alternating current via a first converter switch and the second converter system is connected to a second distribution of alternating current via a second converter switch, and
wherein the link circuits include two independent line paths, and each independent line path is directly connected to a battery system for compensating for voltage dips;

the first converter switch is configured to connect to a power supply network via a first decoupling inductor;
the second converter switch is configured to connect to the power supply network via a second decoupling inductor;
the arrangement is configured to:
maintain the voltage at a critical load by decoupling the power supply network in a fault state from the critical load by:
opening the first decoupling inductor or the second decoupling inductor, and closing both the first converter switch and the second converter switch, or
opening both the first decoupling inductor and the second decoupling inductor, and closing the first converter switch, the second converter switch, or a combination thereof;

compensate for a voltage dip at the critical load by maintaining the voltage of the critical load, utilizing the energy stored in the battery system; and, before the first decoupling indicator decouples the first distribution from the power supply network, phase match the first distribution.