| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a coolant flow reduction monitoring system for a rotary electric machine having stator coils within a plurality of slots of a stator. <P>SOLUTION: Stator coils 106 are cooled by a coolant 140 flowing in a plurality of passages 138 provided in the stator coils. The system includes an outlet temperature sensor 150 for measuring a coolant outlet temperature of the coolant in an outlet of at least one of the plurality of passages, a slot temperature sensor 152 for measuring a temperature in at least one slot at a location along a length of each slot and outside of the stator coils 160, and an inlet temperature sensor 160 for measuring a coolant inlet temperature of the coolant 140. A coolant flow reduction monitor 170 generates an alarm indicating a coolant flow reduction based on the at least one coolant outlet temperature, the at least one slot temperature and the coolant inlet temperature. <P>COPYRIGHT: (C)2012,JPO&INPIT |
