EP 3724983 A1 20201021 - CONTROL OF ELECTRICAL CONVERTER WITH PARALLELED HALF-BRIDGES
Title (en)
CONTROL OF ELECTRICAL CONVERTER WITH PARALLELED HALF-BRIDGES
Title (de)
STEUERUNG EINES ELEKTRISCHEN WANDLERS MIT PARALLEL GESCHALTETEN HALBBRÜCKEN
Title (fr)
COMMANDE DE CONVERTISSEUR ÉLECTRIQUE À DEMI-PONTS EN PARALLÈLE
Publication
Application
Priority
- EP 17206942 A 20171213
- EP 2018084777 W 20181213
Abstract (en)
[origin: WO2019115701A1] An electrical converter (10) comprises at least two phase branches (12A, 12B, 12C, 12N), each phase branch comprising at least two half-bridges (16), which are connected in parallel to a DC link (14) and which are connected via midpoints (18) for providing a phase output (A, B, C, N) for the phase branch. A method for controlling an electrical converter (10) comprises: determining setpoint phase signals (Vi,ABC*) for the phase branches from actual phase voltages (VABC 0) and actual phase currents (iL,ABC 0), which are determined from measurements, and from reference phase voltages (Vdq0*) for the phase branches (12A, 12B, 12C, 12N); determining a phase duty cycle (dA, dB, dc, dN) for each phase branch (12A, 12B, 12C, 12N) from the setpoint phase signals (Vi,ABC*); determining a half-bridge duty cycle (dAj, dbj, dcj, dNj) for each half-bridge (16) by adding a duty cycle correction (ΔdAj, ΔdBj, ΔdCj, ΔdNj) for the half-bridge (16) to the phase duty cycle (dA, dB, dC, dN) for the phase branch (12A, 12B, 12C, 12N) to which the half-bridge (16) belongs, wherein the duty cycle correction is determined from actual half- bridge output currents (iL,Aj 0, iL,Bj 0, iL,Cj 0, iL,Nj 0) of the half-bridges (16) of the phase branch, which actual half-bridge output currents (iL,Aj 0, iL,Bj0, iL,Cj 0, iL,Nj 0) are determined from measurements.
IPC 8 full level
H02M 7/493 (2007.01)
CPC (source: EP US)
H02M 1/0025 (2021.05 - EP); H02M 7/493 (2013.01 - EP US); H02M 1/0043 (2021.05 - EP US)
Citation (search report)
See references of WO 2019115701A1
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
DOCDB simple family (publication)
DOCDB simple family (application)
EP 2018084777 W 20181213; EP 18814969 A 20181213