Field winding type rotating electrical machine and field current control method for field winding type rotating electrical machine

摘要

A field current detection unit (110) for detecting a field current flowing in the field winding, and a DUTY for energizing the field winding based on the field current detection value are calculated, and the field winding is calculated using a switching element. A field current control unit (100) that controls the energization of the field current, and a time when the field current becomes 0 A is estimated based on the control state of the field current, and the field current detected by the field current detection unit at the estimated time A field current correction unit (120) that specifies a current detection value as a field current correction value and calculates a corrected field current value by subtracting the field current correction value from the field current detection value; The field current control unit performs energization control based on the corrected field current value calculated by the field current correction unit.