CONTROL DEVICE AND CONTROL METHOD

摘要

A control device (101) that controls a fuel gas supply system (100) that has: a compressor (1) that supplies compressed fuel gas to a load apparatus (15); an inflow amount regulating means (5) that regulates the amount of fuel gas that flows into the compressor (1); an anti-surge valve (7) that is for returning to an inlet side of the compressor (1) fuel gas that is discharged from the compressor (1); and an inlet pressure-regulating valve (9) that regulates the pressure of fuel gas supplied toward the inflow amount regulating means (5). The control device (101) comprises: a main pressure-regulating unit (101a) that controls the inflow amount regulating means (5) and the anti-surge valve (7) using a first feedforward control value (MV0) that is generated on the basis of the load (DEM) of the load apparatus (15) and of a first conversion process and using a feedback control value (MV1) that is generated on the basis of the deviation between a set value (SV1) and a measured value (PV1) for the discharge pressure of the compressor (1); and an inlet pressure-regulating unit (101b) that controls the inlet pressure-regulating valve (9) using a second feedforward control value (MV5) that is generated on the basis of the load (DEM) of the load apparatus (15) and of a second conversion process.