US 11,916,474 B2
Electrical power converter
Jordi Everts, Son (NL)
Assigned to PRODRIVE TECHNOLOGIES INNOVATION SERVICES B.V., Son (NL)
Appl. No. 17/268,773
Filed by PRODRIVE TECHNOLOGIES INNOVATION SERVICES B.V., Son (NL)
PCT Filed Aug. 14, 2019, PCT No. PCT/EP2019/071812
§ 371(c)(1), (2) Date Feb. 16, 2021,
PCT Pub. No. WO2020/035527, PCT Pub. Date Feb. 20, 2020.
Claims priority of application No. 2021479 (NL), filed on Aug. 17, 2018.
Prior Publication US 2021/0359595 A1, Nov. 18, 2021
Int. Cl. H02M 1/42 (2007.01); B60L 53/12 (2019.01); B60L 53/20 (2019.01); G01R 33/385 (2006.01); H02J 7/02 (2016.01); H02M 7/219 (2006.01)
CPC H02M 1/4233 (2013.01) [B60L 53/12 (2019.02); B60L 53/20 (2019.02); G01R 33/3852 (2013.01); H02J 7/02 (2013.01); H02M 7/219 (2013.01); H02J 2207/20 (2020.01)] 19 Claims
OG exemplary drawing
 
1. An electrical converter for converting a three-phase AC input into a DC output, the electrical converter comprising:
three phase input terminals and two output terminals;
a three-phase bridge rectifier having an input side connected to the three phase input terminals and an output side connected to an upper intermediate output node and a lower intermediate output node, the three-phase bridge rectifier comprising first semiconductor switches;
a boost circuit comprising boost inductors, at least one second semiconductor switch that is actively switchable, and at least one third semiconductor switch, wherein the at least one second semiconductor switch and the at least one third semiconductor switch are connected in series across the output terminals;
an output filter comprising a filter capacitor connected between the boost circuit and the output terminals; and
a controller operably connected to the at least one second semiconductor switch;
wherein the boost inductors are connected between the three phase input terminals and the three-phase bridge rectifier;
wherein the at least one second semiconductor switch is connected across the upper intermediate output node and the lower intermediate output node;
wherein the controller is configured to control the at least one second semiconductor switch via pulse width modulation allowing for obtaining a pulsed intermediate voltage between the upper intermediate output node and the lower intermediate output node having a modulated pulse width;
wherein the first semiconductor switches are actively switchable; and
wherein the controller is operably connected to the first semiconductor switches to control switching of the first semiconductor switches according to a switching pattern in which one or more respective ones of the first semiconductor switches are operated via pulse width modulation, such that the phase input terminal having an intermediate voltage between a highest voltage and a lowest voltage is alternatingly connected to the upper intermediate output node and the lower intermediate output node.