Patent ID: 11909319
Assignee: ROBERT BOSCH GMBH
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  Y | IPC H

Claim 1:
2. A method (100) for operating voltage converters (210, 220) connected in parallel, wherein at least one first and one second voltage converter (210, 220) are connected in parallel on an output side, the method comprising the following steps:
operating (110) the voltage converters (210, 220) connected in parallel in different operating modes (120, 130) depending on (a) a determined temperature (Tact) and a presettable first temperature limit value (Tth), depending on (b) a determined current (Iact) and a first presettable current limit value (Ith1), or depending on both (a) and (b),
operating the voltage converters (210, 220) in a first operating mode (120) when the determined temperature (Tact) is less than the presettable first temperature limit value (Tth),
operating the voltage converters (210, 220) in a second operating mode (130) when (c) the determined temperature (Tact) is greater than the presettable first temperature limit value (Tth), (d) the determined current is less than the first presettable current limit value (Ith1), or both (c) and (d),
operating (110) the voltage converters (210, 220) connected in parallel in different operating modes (120, 130, 135) depending on the total efficiency (G) of the voltage converters (210, 220) connected in parallel,
operating the voltage converters (210, 220) in a third operating mode (135) when the total efficiency (G) in the third operating mode (135) is greater than in the first operating mode (120), and
operating the voltage converters (210, 220) in the first or second operating mode (120, 130) when the total efficiency (G) in the third operating mode (135) is less than in the first operating mode (120),

wherein the operation of the voltage converters (210, 220) in the first operating mode (120) comprises operation of a first of the at least two voltage converters (210, 220) and comprises a switched-off state of a second of the at least two voltage converters (210, 220),
wherein the operation of the voltage converters (210, 220) in the second operating mode (130) comprises two operating phases, wherein a first operating phase (140) comprises the common parallel operation of the at least two voltage converters (210, 220), and a second operating phase (150) comprises the operation of a selected one of the at least two voltage converters (210, 220) and a switched-off state of at least one of the two voltage converters (210, 220).