Hitachi, Ltd.

Naoto Ebisawa

Hideaki Orikasa

Takeshi Miyanaga

Kitami Suzuki

Keiichi Hiwatari

A control device of a compressor includes a valve control unit configured to control an anti-surge valve that returns fluid in a discharge side of the compressor to a suction side of the compressor in accordance with a control parameter, a simulation unit configured to simulate operational status of the compressor in a plant in accordance with a plant model and the control parameter of the plant to which the compressor is installed, and a control parameter adjusting unit configured to adjust the control parameter in accordance with a result of the simulation.

Control device and control method of compressor

With a simulation apparatus for a system including a motor-driven compressor, a compressor that does not suffer from a driving torque shortage and surging, but can operate at low costs, can be provided. A simulation apparatus for a motor-driven compressor system includes a simulation section in which a driving motor, a compressor driven by the driving motor, a suction throttle valve controlling the inlet flow rate of the compressor, and an anti-surge valve interposed between pipes for returning a part of gas discharged from the compressor to the inlet side of the compressor are translated into unit models and stored. The simulation apparatus further includes an input section through which designed specification data of the compressor is input, a data setting section storing the designed specification data, and a display section displaying unsteady-state Q-H characteristics and required driving torque obtained through simulation by the simulation section.

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Ushiku, Japan

Naoto Ebisawa