US 11,705,804 B2
Control of an ICBT converter
Alexandre Christe, Veysonnaz (CH); Yuhei Okazaki, Västerås (SE); and Michele Luvisotto, Västerås (SE)
Assigned to ABB Schweiz AG, Baden (CH)
Appl. No. 17/631,116
Filed by ABB Schweiz AG, Baden (CH)
PCT Filed Aug. 6, 2020, PCT No. PCT/EP2020/072097
§ 371(c)(1), (2) Date Jan. 28, 2022,
PCT Pub. No. WO2021/023807, PCT Pub. Date Feb. 11, 2021.
Claims priority of application No. 19190515 (EP), filed on Aug. 7, 2019.
Prior Publication US 2022/0278629 A1, Sep. 1, 2022
Int. Cl. H02M 7/483 (2007.01); H02M 7/497 (2007.01); H02M 1/092 (2006.01)
CPC H02M 1/092 (2013.01) [H02M 7/4835 (2021.05); H02M 7/497 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A voltage source converter comprising:
at least one phase leg connected between a first DC terminal having a first voltage and a second DC terminal having a second voltage, the phase leg including an upper arm and a lower arm with cells, where the junction between the arms is connected to a corresponding AC terminal, the converter further including a control unit configured to:
control the cells to output a train of pulses of trapezoidal shape where the generation of a first control signal for a first cell used to initiate a transition between two levels of a pulse coincides with the decision that a transition is to be made,
wherein the decision that a transition is to be made is carried out through a comparison between a carrier and a reference performed for the first cell, which reference is a sinusoidal reference.