Remaining life diagnosis method for rotary electric machines and remaining life diagnosis device for revolving electric machines

摘要

The remaining life diagnostic device of the rotary electric machine calculates the third index value from the first index value based on the data acquisition unit that acquires the operation record data and the electrical data of the rotary electric machine to be diagnosed, and the acquired data. At the same time, by analyzing each of the electrical data using the MT method, the index value calculation unit that calculates the estimated value of the residual withstand voltage value of the rotating electric machine as the fourth index value, and the first index value It is provided with an insulation deterioration estimation unit for diagnosing the remaining life of the rotating electric machine by estimating the remaining life of the rotating electric machine using the four index values of the fourth index value.