EP 4315578 A1 20240207 - BIDIRECTIONAL DC-TO-DC CONVERTER AND OPERATING METHOD
Title (en)
BIDIRECTIONAL DC-TO-DC CONVERTER AND OPERATING METHOD
Title (de)
BIDIREKTIONALER DC/DC-WANDLER UND BETRIEBSVERFAHREN
Title (fr)
CONVERTISSEUR C.C.-C.C. BIDIRECTIONNEL ET PROCÉDÉ DE FONCTIONNEMENT
Publication
Application
Priority
- DE 102021108278 A 20210331
- EP 2022058014 W 20220325
Abstract (en)
[origin: WO2022207513A1] The invention relates to a bidirectional DC-to-DC converter (10, 20, 30, 40, 50) for converting a DC link voltage (Uzk) on the input side into an output voltage (Uout) and vice versa, in particular for a transformerless charging station or for an energy store for temporarily storing energy from a servo drive. The DC-to-DC converter (10, 20, 30, 40, 50) comprises a series circuit composed of two half-bridges (H1, H2) which include four semiconductor switches (T1, T2, T3, T4) and each of which is connected between a DC link voltage bus (ZK+, ZK-) having a DC link voltage (Uzk) on the input side and a medium voltage bus (ZM) having a symmetric, in particular a balanced-to-earth, medium voltage (UZK+, UZK-). Each center tap (M1, M2) of the half-bridge (H1, H2) cooperates with a storage choke (Ls+, Ls-) and a storage capacitor (CS) in such a way that two bidirectional synchronous converters are connected in series. According to the invention, at least one ring-around capacitor (CZVS, CZVS+, CZVS-, CZVS++, CZVS+-, CZVS-+, CZVS--) is connected to the center tap (M1, M2) of each half-bridge (H1, H2).
IPC 8 full level
H02M 1/00 (2006.01); H02M 1/44 (2007.01); H02M 3/158 (2006.01); H02M 7/487 (2007.01)
CPC (source: EP)
H02M 1/0058 (2021.05); H02M 3/158 (2013.01); H02M 1/44 (2013.01); H02M 7/487 (2013.01)
Citation (search report)
See references of WO 2022207513A1
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
Designated validation state (EPC)
KH MA MD TN
DOCDB simple family (publication)
DE 102021108278 A1 20221006; EP 4315578 A1 20240207; WO 2022207513 A1 20221006
DOCDB simple family (application)
DE 102021108278 A 20210331; EP 2022058014 W 20220325; EP 22719516 A 20220325