| 摘要 |
PURPOSE:To select a time constant and external wirings adapted for a branch circuit to improve the rectifying characteristic by dividing the DC reactor of the branch circuit. CONSTITUTION:A main circuit of an armature 1 and a rectification compensating winding 2 is connected between motor terminals A-H, and a branch circuit of a DC reactor 3 and a resistor 4 to be opened and closed by contactors 5, 6 is connected with the intermediate terminal G. The contactors 5, 6 are opened and closed by a comparator 8 in response to the rotating speed of a motor detected by a tachometer generator 7 couped with the armature 1, and a current If of a separately-excited winding 9 is controlled in response to the rotating speed by a field power source 10. A DC reactor is split into 3a, 3b. Thus, the time constant adapted for branching current switching time can be obtained, and external wiring resistance can be increased. |
