| 摘要 |
<P>PROBLEM TO BE SOLVED: To restrain a d-axis current from going wide of an operating space in switching from a rectangular wave voltage phase control mode to an overmodulated current control mode, in a rotating electrical machine control system. <P>SOLUTION: A control unit 30 in the rotating electrical machine control system 10 includes: a stationary switching module 40, which switches a control mode from a rectangular wave voltage phase control mode to an overmodulated current control mode, using the current phase of a softened current where the filtering of harmonic is performed for a real current, in a stationary operation state; and a transient switching module 42, which switches its control mode from a rectangular wave voltage phase control mode to an overmodulated current control mode, using the current phase of the real current, in a transient operation state. For the current phase of the real current, the control mode is switched, being compared with a transient switching line set beforehand separately from a switching line that is compared with the current phase of the smoothing current. <P>COPYRIGHT: (C)2010,JPO&INPIT |
