Patent ID: 9450522
Filing Date: 2016-09-20
CPC Classification: G01R,H02K,H02P

Claim Text:
1. A field control device for a synchronous rotating machine including armature and field windings, the field control device comprising: a target operating condition input unit to accept, as inputs, target operating condition demand values including a final-control-quantity demand value which is a demand value of a final control quantity of the synchronous rotating machine; a first subtraction unit to subtract, from the final-control-quantity demand value input by the target operating condition input unit, a final-control-quantity feedback value of the synchronous rotating machine to output a final-control-quantity deviation; a final-control-quantity control computation unit to accept, as an input, the final-control-quantity deviation from the first subtraction unit, to output a field-current correction demand value; an anticipatory computation unit to output a field-current anticipatory demand value based on the operating condition demand values input by the target operating condition input unit; an addition unit to add the field-current correction demand value and the field-current anticipatory demand value to output a field-current setting value; a second subtraction unit to subtract, from the field-current setting value, a value of field current flowing through the field winding to output a field current deviation; and a field-current regulation device to adjust the field current based on the field current deviation, wherein the anticipatory computation unit includes: