| 摘要 |
During initial charging for forming a predetermined bus voltage in a direct-current bus performed in a converter circuit when power is supplied to a motor control apparatus to which a power storage apparatus is connected, a step-down switching element in a step-up/down chopper circuit in the power storage apparatus is caused to perform ON/OFF operations a predetermined times to apply the initial charging to a power storage device, actual capacitance of the power storage device is calculated from total energy given to the power storage device in a period of the ON/OFF operations performed the predetermined times and a charging voltage indicated by the power storage device, and the calculated actual capacitance and initial capacitance of the power storage device are compared to estimate a deterioration degree of the power storage device and diagnose the life of the power storage device. |
