| 摘要 |
<P>PROBLEM TO BE SOLVED: To reduce torque pulsation and switching loss in a power converter. <P>SOLUTION: A power converter 140 alternately forms a first period in which a battery 136 as a DC power source supplies a motor generator 192 with a current, by switching on an IGBT328 for an upper arm and an IGBT 330 for a lower arm in different phases, and a second period in which a torque is kept with an energy accumulated in the motor generator 192, by switching on either the IGBT328 for an upper arm or the IGBT330 for a lower arm in all phases according to an electrical angle. <P>COPYRIGHT: (C)2011,JPO&INPIT |
