| 摘要 |
<p>PURPOSE:To enable control of rotary force of a main motor over a wide speed range, by providing a separately excited winding as well as a series winding to a DC main motor then feeding a portion of current flowing through an exciter side field regulation resistor to the separately excited winding. CONSTITUTION:In an exciter 2, a differential winding 5 to be excited reversely by the load current of a main generator 1 is provided to a shunt generator 4 employing an battery 3 as a power source. Output characteristic of the main generator is regulated to be constant by means of exciting circuit regulating resistors R1-R3 for the exciter 2 and a resistor R4 inserted in series with the exciting coil of the main generator 1. A series motor 6 is connected to the output of the main generator 1. A separately excited winding 11 which is constituted such that it is functionable cumulatively when current (i1) flowing from the battery 3 to the resistor R1 is in same direction as the current flowing through a series winding 7 is connected between the resistor R1 arranged in the exciting winding of the exciter 2 and the exciting battery 3.</p> |
