| 摘要 |
PURPOSE:To provide proper and stable controllability for changing/discharging of an assist storage battery in compliance with varying load and accomplish an output control device of simple circuit configuration by setting the target of output voltage to a level aroud the assist storage battery release voltage at the time of being charged 100%, wherein this release voltage shall be observed as the lower limitation. CONSTITUTION:An output current control device according to the present invention comprises a voltage sensor 13 to monitor the voltage Ed of an assist storage battery 6, a setting device 22 for the target value Es for the output voltage of a DC/DC converter 4, and a control part 21 which consists, for ex., of a proportional integral regulator (PI regulator), etc., and which emits a command signal Is to control the output current If of the DC/DC converter so as to approach the sensed voltage Ed to the target value Es through their comparison. This command signal Is is given to the DC/DC converter 4 and also sent to an auxiliary machine control part 10 for controlling auxiliary machinery such as a crude material pump 7 and air blowers 8, 9. Therein the target value Es for the output voltage of DC/DC converter 4 shall be set to a level near the release voltage at the time of being charged 100%, with this voltage value observed as the lower limitation. |
