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1. (WO2017037050) ELECTRONIC CONVERTER AND LIGHTING SYSTEM INCLUDING SUCH A CONVERTER

Pub. No.:    WO/2017/037050    International Application No.:    PCT/EP2016/070395
Publication Date: Fri Mar 10 00:59:59 CET 2017 International Filing Date: Wed Aug 31 01:59:59 CEST 2016
IPC: H05B 33/08
H02M 7/217
Applicants: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES
Inventors: PERICHON, Pierre
LADHARI, Othman
STERNA, Léo
Title: ELECTRONIC CONVERTER AND LIGHTING SYSTEM INCLUDING SUCH A CONVERTER
Abstract:
The invention relates to an electronic converter which allows a power transfer from an AC voltage source, connected between an input terminal and a common terminal, to a load connected between an output terminal and a reference terminal, the AC voltage including positive alternations interspersed with negative alternations at a first frequency, said converter comprising: an input inductance connected to the input terminal; an output inductance connected to the output terminal; a storage capacitor arranged between the two inductances; a chopper circuit configured to: in a first state, charge the input inductance via the AC voltage source and discharge the storage capacitance in the output inductance by supplying the load; in a second state, discharge the input inductance in the storage capacitance and discharge the output inductance by supplying the load; and a device for controlling the chopper circuit, configured to activate, during each of the positive and negative alternations, consecutive operating cycles at a second frequency higher than the first frequency, each operating cycle being made up of first and second states, 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.