US 10,172,201 B2
Electronic converter and lighting system comprising such a converter
Pierre Perichon, Voiron (FR); Othman Ladhari, Fontaine (FR); and Léo Sterna, Grenoble (FR)
Assigned to COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES, Paris (FR)
Appl. No. 15/757,222
Filed by COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES, Paris (FR)
PCT Filed Aug. 30, 2016, PCT No. PCT/EP2016/070395
§ 371(c)(1), (2) Date Mar. 2, 2018,
PCT Pub. No. WO2017/037050, PCT Pub. Date Mar. 9, 2017.
Claims priority of application No. 15 58237 (FR), filed on Sep. 4, 2015.
Prior Publication US 2018/0263090 A1, Sep. 13, 2018
Int. Cl. H05B 37/02 (2006.01); H05B 33/08 (2006.01); H02M 1/08 (2006.01); H02M 7/217 (2006.01); H02M 1/00 (2006.01)
CPC H05B 33/0818 (2013.01) [H02M 1/081 (2013.01); H02M 7/217 (2013.01); H05B 33/0845 (2013.01); H02M 2001/0054 (2013.01); H05B 33/0842 (2013.01)] 17 Claims
OG exemplary drawing
 
1. An electronic converter allowing power to be transferred from an alternating voltage source, connected between an input terminal and a common terminal, to a load connected between an output terminal and a reference terminal, an alternating voltage having a first frequency and comprising positive alternations alternating with negative alternations, said converter comprising:
an input inductor having a first end connected to the input terminal so as to receive the alternating voltage;
an output inductor connected to the output terminal;
a storage capacitor arranged between the input inductor and the output inductor;
a chopper circuit configured:
in a first operating state, to charge the input inductor by means of the alternating voltage source, and to discharge the storage capacitor into the output inductor while powering the load;
in a second operating state, to discharge the input inductor into the storage capacitor, and to discharge the output inductor while powering the load;
the chopper circuit comprising a first bidirectional switch having a first end connected to a second end of the input inductor, and a second end connected to the common terminal, and
a control device for controlling the chopper circuit, configured to activate, during each of the positive and negative alternations, successive operating cycles at a second frequency higher than the first frequency, each operating cycle comprising the first operating state and of the second operating state, the first operating state having a duty cycle which varies so as to obtain a constant output voltage between the output terminal and the reference terminal during each of the positive and negative alternations.