US 12,407,271 B2
Multilevel power converter
Kiavash Askari Noghani, Ottawa (CA); and Kamal Al-Haddad, Montréal (CA)
Assigned to ECOLE DE TECHNOLOGIE SUPERIEURE, Montreal (CA)
Appl. No. 17/927,597
Filed by ECOLE DE TECHNOLOGIE SUPERIEURE, Montreal (CA)
PCT Filed May 25, 2021, PCT No. PCT/CA2021/050701
§ 371(c)(1), (2) Date Nov. 23, 2022,
PCT Pub. No. WO2021/237343, PCT Pub. Date Dec. 2, 2021.
Claims priority of provisional application 63/029,516, filed on May 24, 2020.
Prior Publication US 2023/0208314 A1, Jun. 29, 2023
Int. Cl. H02M 7/483 (2007.01); H02M 1/00 (2006.01); H02M 1/12 (2006.01)
CPC H02M 7/4835 (2021.05) [H02M 1/0025 (2021.05); H02M 1/12 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A multilevel power converter for transforming electrical power between direct current (DC) power and alternating current (AC) power, comprising:
a first cell comprising a first switch, a second switch, and a DC source, the first switch and the second switch connectable to a load via a first terminal and connected in series with the source on opposite poles thereof;
a second cell comprising a third switch and a fourth switch, the third switch and the fourth switch connectable to the load via a second terminal and connected in series with a DC capacitor on opposite poles thereof; and
at least one intermediate cell connecting the first cell to the second cell, the at least one intermediate cell comprising a fifth switch connected to a positive pole of the source and to a positive pole of the capacitor, a sixth switch connected to a negative pole of the source and to a negative pole of the capacitor, a seventh switch connected to the positive pole of the source and to the negative pole of the capacitor, and an eighth switch connected to the negative pole of the source and to the positive pole of the capacitor.