US 11,863,085 B2
Converter assembly
Erwin Reisinger, Feldkirchen bei Graz (AT); and Martin Schmidt, Langen (DE)
Assigned to AVL List GmbH, Graz (AT)
Appl. No. 17/909,046
Filed by AVL List GmbH, Graz (AT)
PCT Filed Mar. 5, 2021, PCT No. PCT/AT2021/060079
§ 371(c)(1), (2) Date Sep. 2, 2022,
PCT Pub. No. WO2021/174280, PCT Pub. Date Sep. 10, 2021.
Claims priority of application No. A 50173/2020 (AT), filed on Mar. 5, 2020.
Prior Publication US 2023/0106145 A1, Apr. 6, 2023
Int. Cl. H02M 7/5387 (2007.01); H02M 1/00 (2006.01); H02M 1/12 (2006.01)
CPC H02M 7/5387 (2013.01) [H02M 1/0043 (2021.05); H02M 1/123 (2021.05); H02M 1/126 (2013.01)] 20 Claims
OG exemplary drawing
 
1. Converter assembly for converting a DC voltage into an N-phase AC voltage or vice versa, comprising
a connected inverter unit having a number M of electronically controllable half bridges for least one, preferably for each of the N phases, wherein M is greater than one,
a control unit controlling the half bridges which is designed to activate the half bridges in a phase-offset manner with a substantially constant switching frequency fT, wherein,
to damp electrical common-mode interference, the phases are connected to a respective winding of a common-mode choke with a common magnetic core, and wherein
the outputs of the half bridges which supply the same phase are in each case interconnected via interleaving chokes,
wherein a first LC filter stage and a second LC filter stage are provided, wherein the first LC filter stage is formed by the interleaving chokes and a resistance-damped capacitor circuit, and the second LC filter stage is formed by the common-mode choke and a resistance-damped capacitor circuit.