Rankine-cycle power-generating apparatus

A Rankine-cycle power-generating apparatus comprising:

• a Rankine-cycle device including:
• an expander that converts expansion energy of a working fluid into mechanical energy,
• a bypass flow channel that bypasses the expander,
• an opening/closing device that opens/closes the bypass flow channel and whose degree of opening is adjustable to any of a fully opened state, a fully closed state, and an intermediate degree of opening between the fully opened state and the fully closed state, and
• a power generator that is linked to the expander;
• and
• a control device including:
• a converter that converts alternating-current electric power generated by the power generator into direct-current electric power,
• an inverter that is connected to the converter via a direct-current electric power line and is capable of converting the direct-current electric power into alternating-current electric power and feeding the alternating-current electric power to a commercial system, and
• an electric power absorber that absorbs part of or all of the direct-current electric power,
• a specific operation being executable in the Rankine-cycle power-generating apparatus,
• a) in the specific operation, the control device is configured to output a command signal to the opening/closing device for adjusting the degree of opening so that the direct-current electric power absorbed by the electric power absorber approaches a first electric power, or
• b) in the specific operation, the control device is configured to output a command signal to the opening/closing device for increasing the degree of opening to the intermediate degree of opening so that the direct-current electric power absorbed by the electric power absorber falls within a predetermined range.