Permanent-magnet brushless variable speed constant voltage generator

The utility model relates to a permanent-magnet brushless variable speed constant voltage generator, which is driven by a variable-speed wind wheel, constant voltage direct current transmitted by the generator is output to an electric fence after the frequency conversion of a de-to-ac converter, the generator comprises a stator which comprises an armature core, windings and an iron core mounting rack, a rotor which comprises a permanent-magnet magnetic pole and a magnetic pole fixed mount, and a multi-phase full-wave rectifier. A plurality of containing grooves are formed on the armature core, the windings are arranged in the containing grooves, the ratio between the depth and the width of the containing grooves is between 3:1-6:1, the generator further comprises a rotation shaft and a bearing, and the rotor is connected with the rotation shaft through the bearing in a matching mode. The generator is characterized in that based on realizing the constant voltage output, through setting the ratio between the de