POWER GENERATOR WITH LOAD-DUMP PROTECTION

摘要

In a power generator, a determiner determines whether a phase voltage output from each of multiphase armature windings has exceeded a threshold voltage. A turn-on unit turns on at least one of the protective switches as a target protective switch to limit the output voltage of the rectifier circuit to be lower than the threshold voltage upon the phase voltage output from at least one of the multiphase armature windings corresponding to the at least one of the protective switches has exceeded the threshold voltage.

主权项

1. A power generator comprising:
multiphase armature windings; a rectifier circuit comprising a plurality of upper-arm rectifier elements and a plurality of lower-arm rectifier elements connected in series to the corresponding one of the upper-arm rectifier elements, a connection point between each of the upper-arm rectifier elements and the corresponding one of the lower-arm rectifier elements being connected to the corresponding one of the multiphase armature windings, the rectifier circuit being configured to output a rectified voltage as an output voltage of the rectifier circuit based on an AC phase voltage output from each of the multiphase armature windings, the upper-arm rectifier elements or the lower-arm rectifier elements being each comprised of a protective switch; a determiner configured to determine whether:
the phase voltage output from each of the multiphase armature windings has exceeded a threshold voltage; and a turn-on unit configured to turn on at least one of the protective switches as a target protective switch to limit the output voltage of the rectifier circuit to be lower than the threshold voltage when it is determined that:
the phase voltage output from at least one of the multiphase armature windings corresponding to the at least one of the protective switches has exceeded the threshold voltage.