Control apparatus of an AC generator for a vehicle

摘要

A control apparatus of an AC generator for a vehicle can obtain large regeneration energy without making the size of the generator large. In the control apparatus in which an AC output current is rectified and supplied to a vehicle mounted battery (6) and an electric load of the vehicle, provision is made for a regulator (5) that controls a continuity rate of electric power supply to a field coil (3) of a generator (1) by controlling an output voltage of the generator (1). The regulator (5) suppresses the continuity rate of electric power supply to the field coil (3) at the time of steady operation of the vehicle, and switches a suppression value of the continuity rate of electric power supply so as to increase the continuity rate of electric power supply at the time of deceleration operation of the vehicle.

主权项

1. A control apparatus of an AC generator for a vehicle in which an AC output current is rectified and supplied to a vehicle mounted battery and an electric load of the vehicle, said apparatus comprising:
a regulator that controls a continuity rate of electric power supply to a field coil of the AC generator by controlling an output voltage of the AC generator in accordance with a voltage value of a rectifier and a voltage value of the vehicle mounted battery, wherein said regulator comprises a duty conversion part that determines a suppression value which suppresses the continuity rate of electric power supply to said field coil at a time of steady operation of said vehicle, wherein said duty conversion part is configured to change the suppression value of said continuity rate of electric power supply in accordance with the rotational speed change of the generator, so as to increase said continuity rate of electric power supply from the value at the steady operation, in a rotation region in which regenerative power generation is required for said vehicle, and wherein a regeneration signal is generated within the regulator in real-time in accordance with the rotational speed of the generator so as to perform regenerative control, said regeneration signal being generated without using an external control unit, said control apparatus further comprising: an external control unit that takes in an operating state of said vehicle as vehicle information, and generates a control voltage command to said regulator in accordance with said vehicle information, wherein said regulator includes a control voltage rise detection part that detects a rise of the control voltage command from said external control unit, and determines the suppression value of the continuity rate of electric power supply to said field coil at the time when said control voltage command has risen.