| 摘要 |
<p>An excitation control apparatus for a rotary electric machine according to this invention is such that principal portions of an automatic voltage regulator are dualized by effectively combining circuits preferring decrease of a field current and circuits preferring increase of the field current, thereby to enhance the reliability of the apparatus. The circuits preferring the decrease of the field current when the ignition phase of a thyristor circuit advances precede the circuits preferring the increase of the field current, so that an excitation system is normally operated even in cases of the damages or abnormalities of any internal component, etc.</p> |
