US 12,278,571 B2
Device for creating a DC voltage bus for a polyphase electrical system, motor vehicle and renewable energy generator comprising such a device
Francis Roy, Les Ulis (FR); Thomas Peuchant, Le Bouscat (FR); David Herpe, Tresses (FR); Eric Laboure, Cachan (FR); and Franck Castejon, Meriel (FR)
Assigned to PSA Automobile SA, Poissy (FR); Centrale Supelec, Gif-sur-Yvette (FR); Centre National de la Recherche Scientifique, Paris (FR); SAFT, Levallois Perret (FR); Sorbonne Universite, Paris (FR); and Universite Paris-Saclay, Gif-sur-Yvette (FR)
Appl. No. 18/553,807
Filed by PSA AUTOMOBILES SA, Poissy (FR); CENTRALE SUPELEC, Gif-sur-Yvette (FR); CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE, Paris (FR); SAFT, Levallois Perret (FR); SORBONNE UNIVERSITE, Paris (FR); and UNIVERSITE PARIS-SACLAY, Gif-sur-Yvette (FR)
PCT Filed Mar. 16, 2022, PCT No. PCT/FR2022/050474
§ 371(c)(1), (2) Date Oct. 26, 2023,
PCT Pub. No. WO2022/214745, PCT Pub. Date Oct. 13, 2022.
Claims priority of application No. 2103578 (FR), filed on Apr. 8, 2021.
Prior Publication US 2024/0186914 A1, Jun. 6, 2024
Int. Cl. H02M 7/48 (2007.01)
CPC H02M 7/4826 (2013.01) 11 Claims
OG exemplary drawing
 
1. A device forming a DC voltage bus for a polyphase electrical system comprising voltage legs, each comprising a plurality of battery cell modules, each module comprising a battery cell or a cluster of battery cells, connected to a DC-to-AC converter comprising an H-bridge;
said battery cell modules being connected together in series via the DC-to-AC converter;
said voltage legs each being connected to a specific phase leg for said polyphase electrical system,
at least one phase leg comprising a branch connected to a rectifier module,
wherein the device comprises control means capable of controlling the converters so as to generate at the output of each voltage leg a voltage corresponding to the sum of a reference voltage required for the operation of the polyphase electrical system and of an identical common mode voltage for each voltage leg, the temporal superposition of the voltages at the output of each voltage leg forming a voltage plateau (p) extracted by the rectifier module to obtain the DC voltage.