| 摘要 |
PURPOSE:To enable the quantity of the gas flow in each electrode to be controlled corresponding to the change in electric load while restricting pressure difference to within a given range by correcting the control degree of a gas- flow-controlling valve according to the signal of pressure difference between an air and a fuel electrode. CONSTITUTION:When electric load changes, the direct delivery of the opening degree commands of function generators 13 and 14 to control valves 31 and 32 causes a high change in pressure difference on the air side. A pressure difference detected with a pressure difference detector 15, after being delivered through PID controllers 16 and 17, is added to each of the outputs of the function generators 13 and 14 of an air electrode 4 and a fuel electrode 5 in adders 16 and 17. The polarity of a signal to be added is selected in such a manner that pressure difference generated is suppressed only by feed forward control. The PID controllers 16 and 17 control the degree and the speed of suppression of the pressure difference. |
