| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To relieve a work load when conducting a no-load saturation test. <P>SOLUTION: A no-load saturation test circuit 22A comprises a pointer 24A, a pointer table 25A, and a follow-up device 26A. The pointer 24A outputs a pointer value corresponding to an instruction for increasing or decreasing output voltage. The pointer table 25A stores a plurality of set conditions of a field current setting device 20 between a minimum set condition value and a maximum set condition value, as set condition values, with a minimum pointer value corresponding to the minimum set condition value which indicates a set condition of the field current setting device 20 when the minimum field current is caused to flow in a field winding, and the maximum pointer value corresponding to the maximum set condition value which indicates a set condition of the field current setting device 20 when a field current immediately before the output voltage of a synchronous machine becomes overvoltage is caused to flow in the field winding. The pointer table 25A outputs a set condition value corresponding to a pointer value. The follow-up device 26A which controls the set condition of the field current setting device 20 so that an actual set condition value matches a set condition value currently set for the field current setting device 20. <P>COPYRIGHT: (C)2003,JPO</p> |
