Patent ID: 7586203
Filing Date: 2009-09-08
Classification: H02P

Abstract:
1. A vehicle-use generator comprising: a rotor rotatably mounted on a shaft and having a field coil wound therearound; a stator having a stator winding wound therearound and fixedly disposed so as to form a gap with the rotor; a cooling fan mounted to said rotor; a pulley belt-driven by a vehicle engine and coupled to said shaft through an overrunning clutch provided therein; and a power generation control device controlling an excitation current flowing into said field coil such that an output voltage of said vehicle-use generator is kept at a target regulation voltage, wherein: said overrunning clutch is configured to idle when a rotational speed of said pulley is lower than a rotational speed of said rotor to inhibit torque transmission from said pulley to said rotor, and said power generation control device is configured to forcibly increase said excitation current on a temporary basis when an upshift operation of a transmission of said vehicle is performed; and said rower generation control device is configured to adjust said excitation current in order that a difference between a rotational speed of said pulley and a rotational speed of said rotor is kept within a predetermined value while said upshift operation is performed.