| 摘要 |
<P>PROBLEM TO BE SOLVED: To solve the problem that when a current used in determining whether a reflux mode is active is updated discretely, the need arises to add a large margin to a threshold used for determining whether a reflux mode is active, because a value used in determining whether a reflux mode is active and a value in a process where a power switching element S¥#(¥=u,v,w; #=p,n) is forcibly turned off could disagree. <P>SOLUTION: A dead time generation unit 36 generates operation signals g¥p, g¥n to complementarily drive power switching elements S¥p, S¥n. A cutoff unit 38 generates an off operation command to forcibly turn off an operation signal g¥# for a power switching element S¥# corresponding to the reflux mode. At this time, a threshold for determining whether a reflux mode is active is variably set according to the revolution speed, etc. of a motor generator 10. <P>COPYRIGHT: (C)2013,JPO&INPIT |
