H - Electricity – 02 – M
Patent
H - Electricity
02
M
H02M 1/12 (2006.01) H02M 1/42 (2007.01) H03H 1/00 (2006.01)
Patent
CA 2710301
The present invention relates to a power-factor correction circuit for a three-phase power supply. The correction circuit comprises a filtering unit at the input receiving the three phases of the current, at least one inductor per phase placed downstream of the filtering unit, a rectifying bridge powering a current-chopping stage, characterized in that the filtering unit comprises a differential-mode filtering cell comprising at least one inductive circuit (511) formed of a single magnetic material in a double E, each leg of the E being surrounded by a winding. The invention applies notably to the field of power electronics, in particular to the production of three-phase power supply units.
La présente invention concerne un circuit correcteur du facteur de puissance pour une alimentation triphasée. Le circuit correcteur comporte un bloc de filtrage en entrée recevant les trois phases du courant, au moins une inductance par phase placée en aval du bloc de filtrage, un pont de redressement alimentant un étage de découpage du courant, caractérisé en ce que le bloc de filtrage comporte une cellule de filtrage de mode différentiel comprenant au moins un circuit inductif (511) formé d'un unique matériau magnétique en double E, chaque jambe du E étant entouré d'un bobinage. L'nvention s'applique notamment au domaine de l'électronique de puissance, en particulier à la réalisation de blocs d'alimentation triphasée.
Esposito Pierre
Richardeau Charles
Rincent Michel
Marks & Clerk
Thales
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