PRECHARGE DEVICE AND ENERGY STORAGE MEANS ASSOCIATED WITH A ROTATING ELECTRIC MACHINE

摘要

The invention relates to a precharge device for a supercapacitor (SC) in an electrical architecture of an automotive vehicle comprising a thermal engine (Mth), an alternator-starter (20), a reversible AC-DC converter (21), the supercapacitor (SC), a reversible DC-DC converter (22) and a battery (Bat). According to the invention, when the alternator-starter is in the electric-current generation mode, the winding of the rotor (201) is powered during a precharge period by the supercapacitor (SC) via an electronic switch (25). During the precharge, and due to the magnetic remanence of the rotor, voltages are generated by the stator (200) that charges the supercapacitor (SC) which in turn supplies the winding of the rotor (201), which induces a very rapid charge of the supercapacitor (SC) by cumulative effect.