US 12,149,118 B2
Control arrangement, backup system and method for controlling an inverter
Hans-Peter Pimminger, Pettenbach (AT); Martin Heidl, Pettenbach (AT); and Florian Guschlbauer, Pettenbach (AT)
Assigned to Fronius International GmbH, Pettenbach (AT)
Appl. No. 18/005,646
Filed by Fronius International GmbH, Pettenbach (AT)
PCT Filed Sep. 27, 2021, PCT No. PCT/EP2021/076525
§ 371(c)(1), (2) Date Jan. 16, 2023,
PCT Pub. No. WO2022/064044, PCT Pub. Date Mar. 31, 2022.
Claims priority of application No. 20198669 (EP), filed on Sep. 28, 2020.
Prior Publication US 2023/0291227 A1, Sep. 14, 2023
Int. Cl. H02J 9/06 (2006.01); H02J 3/32 (2006.01); H02J 3/38 (2006.01); H02M 1/36 (2007.01)
CPC H02J 9/062 (2013.01) [H02J 3/32 (2013.01); H02J 3/381 (2013.01); H02M 1/36 (2013.01); H02J 2203/10 (2020.01); H02J 2300/24 (2020.01)] 13 Claims
OG exemplary drawing
 
1. A control arrangement for an inverter, comprising:
a switch with at least three switching positions comprising a first position, a second position and an intermediate position; and
a control device for controlling an operation of the inverter,
wherein the switch is set to the intermediate position during each change between the first position and the second position, and
wherein the control device is configured to shut down the inverter as soon as the switch is set to the intermediate position, operate the inverter in an on-grid mode when the switch is set to the first position, and operate the inverter in an off-grid mode when the switch is set to the second position,
wherein the switch comprises a first auxiliary switching element which is configured to interrupt a connection between the switch and the control device when the switch is in the intermediate position, and to close the connection between the switch and the control device when the switch is in the first position or the second position, and
wherein the control device is configured to immediately shut down the inverter as soon as the connection is interrupted.