초록 ▼

A generator (100) includes a generator winding (103) and an excitation winding (104), and a field winding (102). To converge an output voltage of the generator winding (103) to a target, a field current is varied by increasing/decreasing an energization duty ratio of a switching device (110) connect

A generator (100) includes a generator winding (103) and an excitation winding (104), and a field winding (102). To converge an output voltage of the generator winding (103) to a target, a field current is varied by increasing/decreasing an energization duty ratio of a switching device (110) connected to the field winding (102). In a duty ratio zero determination unit (2) and a duty ratio zero continuation determination unit (3), when an output duty ratio continues for a predetermined time with duty ratio zero, a duty ratio increase amount restriction unit (4) restricts an upper limit of the duty ratio to a predetermined upper limit when the field current increases. A duty ratio restriction unit (21a) for restricting the duty ratio by a maximum value determined based on a voltage of a smoothing capacitor (113) in place of the determination of the duty ratio being zero may be provided.

대표청구항 ▼

1. An output control apparatus of a generator including a generator winding and an excitation winding wound around a stator, a field winding wound around a rotor rotated by a drive source, and a rectifier for rectifying a current generated by the excitation winding and supplying the rectified curren

1. An output control apparatus of a generator including a generator winding and an excitation winding wound around a stator, a field winding wound around a rotor rotated by a drive source, and a rectifier for rectifying a current generated by the excitation winding and supplying the rectified current to the field winding, the output control apparatus of a generator, comprising:a field current control unit which increases/decreases an energization current of the field winding by increasing/decreasing an energization time ratio in an energization cycle of a switching device for controlling an energization of the field winding to converge an output voltage of the generator winding to a target voltage value;an energization time ratio zero detection unit which detects whether the energization time ratio include a zero; andan energization time ratio restriction unit which restricts an upper limit value of the energization time ratio at a time when a field current in the field current control unit increases to a predetermined upper limit value when the energization time ratio zero detection unit detects that the energization time ratio includes the zero. 2. The output control apparatus of a generator according to claim 1, comprising an energization time ratio zero continuation determination unit which drives the energization time ratio restriction unit when a time during which the energization time ratio includes the zero is continued for a predetermined time or longer. 3. An output control apparatus of a generator including a generator winding and an excitation winding wound around a stator, a field winding wound around a rotor rotated by a drive source, and a rectifier for rectifying a current generated by the excitation winding and supplying the rectified current to the field winding, the output control apparatus of a generator, comprising:a smoothing capacitor disposed in parallel with the field winding;a field current control unit which increases/decreases an energization current of the field winding by increasing/decreasing an energization time ratio in an energization cycle of a switching device for controlling an energization of the field winding to converge an output voltage of the generator winding to a predetermined voltage value;a capacitor voltage detection unit which detects a terminal voltage of the smoothing capacitor; andan energization time ratio restriction unit which restricts an upper limit value of an energization time ratio by a maximum value determined so that the energization time ratio is made smaller when a capacitor voltage is higher corresponding to the capacitor voltage detected by the capacitor voltage detection unit when a field current is increased by the field current control unit.