Driving device and an operation method of a compressor

摘要

It is desired to obtain a technique which enables turning of a compressor driven by a multi-shaft gas turbine. The multi-shaft gas turbine has a high-pressure side shaft and a low-pressure side shaft. A compressor drive device applies a drive force to a compressor connected to the low-pressure side shaft of the multi-shaft gas turbine. The compressor drive device includes: a motor which generates a drive force; and a control unit which controls the motor so as to generate an rpm when turning the compressor. If the torque generated by the gas turbine is insufficient, the control unit controls the motor so as to carry out a helper motor operation for increasing the torque.

主权项

1. A compressor driving device configured to generate a driving power to drive a compressor, the compressor being connected to a multi-shaft gas turbine having a high pressure side shaft and a low pressure side shaft, and the low pressure side shaft of the gas turbine being connected to the compressor, wherein the compressor driving device comprises:
a motor configured to be coupled the compressor; and a control section configured to control the motor to generate a rotation speed of a turning of the compressor during a period when normal operation of the gas turbine is stopped, wherein the control section is further configured to carry out a helper motor drive mode in which an assist torque is generated by the motor in response to a detection signal for assisting a torque of the gas turbine when a torque generated by the gas turbine is lacking, during a period when the gas turbine is in normal operation.