| 摘要 |
<p>PURPOSE:To start a load reliably by providing means for detecting the output voltage from an AC generator and providing the detected output voltage to a constant output pattern generator and means for offsetting the output voltage from a constant output control system to a level higher than zero when the detected voltage is zero or very low. CONSTITUTION:Output voltage ea detected through a voltage detector 4 is zero but an output pattern generating block 77 outputs an offset value, when a load is started, and thereby an adder/subtractor 8 produces an output which is not zero. Since a field pattern generator 13 produces a higher output, a low level priority circuit 10 selects the output at the side of the adder/subtractor 8 and thereby the field 2 current increases. When the output pattern from the output pattern generating block 77 approaches to a conventional pattern, transition is made to normal constant output control.</p> |
