| 摘要 |
<P>PROBLEM TO BE SOLVED: To avoid the number of revolutions of an electric motor while a voltage of a high-voltage system is high from being fallen into a range of the number of revolutions which corresponds to a resonance frequency of a circuit. <P>SOLUTION: In this control device of a boost converter, when the number of revolutions Nm2 of the motor MG2 is smaller than the number of revolutions N1 which is larger than the range of the number of revolutions of the motor MG2 (the range of the number of resonance revolutions) which corresponds to the range of the resonance frequency of the RLC circuit which is formed of the boost converter, a capacitor or the like, a voltage V1 is set to a limit voltage Vlim, and when the number of revolutions Nm2 of the motor MG2 is more than or equal to the number of revolutions N1 and less than or equal to the number of revolutions N2, a voltage which has been linearly boosted to an input maximum voltage Vset of an inverter from the voltage V1 is set to the limit voltage Vlim, and when the number of revolutions Nm2 of the motor MG2 is more than or equal to the number of revolutions N2, the input maximum voltage Vset of the inverter is set to the limit voltage Vlim, thus controlling the voltage VH of the high-voltage system so as to reach a target voltage Vh* which is obtained by limiting a required voltage Vhreq by the set limit voltage Vlim. <P>COPYRIGHT: (C)2010,JPO&INPIT |
