US 12,294,314 B2
Zero voltage switching power converter
Vincent Massavie, Grenoble (FR); Ghislain Despesse, Grenoble (FR); Sébastien Carcouet, Grenoble (FR); and Xavier Maynard, Grenoble (FR)
Assigned to COMMISSARIAT À L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES, Paris (FR)
Filed by Commissariat à l'Energie Atomique et aux Energies Alternatives, Paris (FR)
Filed on Jun. 8, 2022, as Appl. No. 17/805,915.
Claims priority of application No. 2106069 (FR), filed on Jun. 9, 2021.
Prior Publication US 2022/0399832 A1, Dec. 15, 2022
Int. Cl. H02M 7/537 (2006.01); H02M 1/00 (2006.01); H02M 1/08 (2006.01)
CPC H02M 7/537 (2013.01) [H02M 1/0058 (2021.05); H02M 1/08 (2013.01)] 12 Claims
OG exemplary drawing
 
1. Power converter comprising:
a switch comprising first and second conduction terminals intended to receive a first AC voltage;
a first circuit for detecting a minimum value reached by the first voltage at each halfwave, and for averaging minimum values over a plurality of halfwaves, the first circuit further comprising, between a first node coupled to the first conduction terminal of the switch and a second node of application of a reference potential, a halfwave rectification element in series with a parallel association of a capacitive element and of a resistor; and
a second circuit for controlling the switch configured, according to the average of said values, to turn on the switch when the first voltage is substantially null.