To demonstrate power performance, while protecting a device by properly holding a voltage of a driving circuit or the like of an electric motor.
When carrying out cranking of an engine by a motor MG 1, a low voltage Vlo is set as a boosting upper limit value Vlim, when rotation speed Nm2 of motor MG 2 is below the threshold Nref which makes a boosting circuit generate LC resonance (S590), high voltage Vhi is set as a boosting upper limit value Vlim, when rotation speed Nm2 of the motor MG 2 is larger than the threshold Nref (S600), and the smaller one is set as a voltage instruction VH* of the boosting circuit among inverter required voltage Vinv* and boosting upper limit value Vlim (S610). Thereby, even if a big voltage fluctuation is produced to a capacitor of high voltage system by LC resonance of a boosting circuit during cranking of the engine 22, surplus limiting of voltage can be suppressed and travel performance can be demonstrated, while preventing an excessive voltage exceeding a breakdown voltage from being applied.
| WO/2006/093241 | BRAKING-DRIVING FORCE CONTROL DEVICE OF VEHICLE |
| JP3683404 | VEHICULAR ELECTRICALLY DRIVEN DEVICE |
| JP2009254162 | VEHICLE AND CONTROL METHOD OF THE SAME |
NAKAMURA MAKOTO
SATO RYOJI
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