| 摘要 |
<P>PROBLEM TO BE SOLVED: To suppress noise resulting from a carrier frequency at the use of a pulse-width over modulation control system while avoiding the deterioration of fuel economy (electricity economy). <P>SOLUTION: When a vehicle speed V is not higher than a preset vehicle speed threshold V0, and the operation state of a first motor generator MG1 is brought into an operation state that control is performed by the pulse-width over modulation control system, an ECU 200 increases a rotation number RM of the first motor generator MG1 up to a rotation number RM2 from a rotation number RM1 by increasing a rotation number RE of an engine 1 up to a rotation number RE2 from a rotation number RE1, and changes the operation state of the first motor generator MG1 to an operation state that control is performed by a rectangular-wave voltage control system. <P>COPYRIGHT: (C)2013,JPO&INPIT |
