| 摘要 |
<P>PROBLEM TO BE SOLVED: To precisely estimate a magnet temperature of a permanent magnet while excessive increase of an operation load is suppressed and to appropriately control output of a permanent magnet-type rotary electric machine based on the estimated magnet temperature. <P>SOLUTION: A magnet temperature estimating part 38 selects map data corresponding to terminal voltage VB of a battery 13, which is outputted from a voltage detector 43, from map data at every power voltage stored in a reference field magnetic current map 39 during conduction to stator winding. Map data corresponding to motor torque TRQ detected by a torque sensor (not illustrated), the number of motor rotations NM, which is output from an angle operation part 37, and q-axis current Iq_s output from a 3 phase-dq conversion part 36 is selected from map data at every reference magnet temperature Tm included in selected map data. The prescribed reference magnet temperature Tm corresponding to selected map data is set as an estimation value of the magnet temperature Tmag. <P>COPYRIGHT: (C)2007,JPO&INPIT |
