Generation control apparatus for vehicles that controls current supply to a field winding of a generator to control output voltage of the generator

A generation control apparatus for vehicles which controls current supply to a field winding of a generator to control output voltage of the generator, comprising:

• a switching element connected to the field winding;
• a duty determining unit that increases a drive duty for interrupting the switching element when output voltage of the generator becomes lower than a predetermined regulated voltage;
• and
• a load response control unit that performs load response control for limiting an increase rate of the drive duty determined by the duty determining unit, after expiration of a predetermined time from application of an electrical load;
• a communication control unit that transmits a notification to an external control unit, the notification including a drive duty for the switching element before application of the electrical load and information indicating that an amount of increase of the drive duty, which increases with application of the electrical load, exceeds a reference value, wherein
• when the amount of increase of the drive duty exceeds the reference value, generation control is performed without performing the load response control before the expiration of the predetermined time, and
• the load response control unit receives, from the external control unit, an increase rate of the drive duty and an initial value of the drive duty which is determined by the external control unit based on the drive duty before application of the electrical load, and performs the load response control based on information regarding the initial value and the increase rate of the drive duty.