Hydraulic motor operation method, operation control system, hydraulic transmission and renewable energy power generator

摘要

A method of operating a hydraulic motor capable of reducing the possibility of components being damaged in the hydraulic motor is provided. A rotating shaft, a cylinder, a piston that forms an operation chamber together with the cylinder, and a communication state between the high pressure line, the low pressure line, and the operation chamber are switched in association with the reciprocating motion of the piston. The operating method of the hydraulic motor including the high-pressure valve and the low-pressure valve includes a step of detecting an abnormality of the hydraulic motor, and a stop step of stopping the hydraulic motor when the abnormality is detected. In the stop step, at least until the rotational speed of the rotary shaft is reduced to a specified rotational speed lower than the rated rotational speed, the upper limit value Pmax is smaller than the rated pressure of the high pressure line and is less than zero. The pressure of the high-pressure line is maintained within a specified range that is greater than or equal to the large lower limit value Pmin. [Selection] Figure 5