| 摘要 |
<p>PURPOSE:To obtain a current limiting value pattern of an electric railcar having less regulating elements by storing a digital pattern signal corresponding to a load at every composition conditions of vehicles in advance in a pattern memory. CONSTITUTION:A digital pattern signal corresponding to the load of a vehicle is stored in a pattern generation memory 11 at every composition condition of a vehicle, and the digital pattern signal is read out and outputted in response to the load detection signal of a vehicle from a load detector 1 and the output data of pattern setters 2. An adder 13 adds a digital pattern signal from a pattern generation memory 11 and an ultrafinely regulated voltage set by a pattern voltage regulator 3, and outputs a current limiting value pattern voltage. Thus, even if the number of types of patterns is altered, it can be remedied even without increasing the number of parts.</p> |
