To solve a problem wherein it cannot be guaranteed that discharge control in an abnormality to discharge a capacitor 16 by shorting both electrodes of the capacitor 16 by turning a switching element Swp on the high potential side and a switching element Swn on the low potential side of an inverter IV into an on-state is surely performed when an error actually occurs.
A relay SMR1 is opened to cause a reactive current to flow into a motor generator 10 to reduce the voltage of the capacitor 16 to a voltage Vdg for diagnosis. Thereafter, the discharge command 'dis' in an abnormality is output to perform a discharge control in an abnormality to discharge the capacitor 16 by shorting both electrodes of the capacitor 16 by turning the switching element Swp on the high potential side and the switching element Swn on the low potential side into an on-state. In this case, whether or not the capacitor 16 is discharged is determined based on a detection value of a voltage sensor 32.
HAMANAKA YOSHIYUKI
JP2000278802A | 2000-10-06 | |||
JP2008061300A | 2008-03-13 |
Yasunari Kurita
Kyoko Hino
Satoru Ando
Hiroshi Matsuda
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