| 摘要 |
PURPOSE:To simplify a rectifying and speed characteristic improving branch circuit without losing various characteristics by integrating a stable winding circuit and a diverter in one branch circuit. CONSTITUTION:A stable winding 6 and a resistor 7 are connected in series, the resistor 7 is connected with a contactor 12, the intermediate terminal M of the resistor 7 is connected with a contactor 5, and the contactors 12, 5 are reversely opened and closed by a comparator 9. The contactor 12 is closed in a low speed range, the contactor 5 is closed in a high speed range, and a diverter current Id is controlled. Thus, the inductance of the stable winding can be effectively activated to eliminate a DC reactor for the diverter. Accordingly, a branch circuit can be simplified to effectively flow the current of the stable winding in response to the rotating speed. |
