Dynamoelectric machine
View Patent ↗A dynamoelectric machine enabling stator winding temperature detecting precision of a temperature measuring means to be improved while also improving assembly of the dynamoelectric machine is provided. The dynamoelectric machine according to the present invention includes: a stator winding disposed in a stator; a temperature sensor for estimating a stator winding temperature of the stator winding; and a thermally-conductive bracket disposed between the stator winding and the temperature sensor. An estimated value of the stator winding temperature is calculated using a sum of a measured temperature measured by the temperature measuring means and a correcting value for correcting the measured temperature.
1. A dynamoelectric machine comprising:
a stator winding;
a temperature measuring means disposed in a vicinity of said stator winding in order to estimate stator winding temperature;
a thermally-conductive supporting portion for supporting said temperature measuring means; and
a thermally-conductive body interposed between said stator winding and said supporting portion for conducting heat from said stator winding to said supporting portion,
wherein:
an estimated value of said stator winding temperature is calculated using a sum of a measured temperature measured by said temperature measuring means and a correcting value.
2. The dynamoelectric machine according to claim 1 , wherein:
said supporting portion is constituted by a member that does not generate heat.
3. The dynamoelectric machine according to claim 1 , wherein:
said stator winding and said supporting portion are simultaneously cooled by an identical cooling medium.
4. The dynamoelectric machine according to claim 1 , wherein:
said supporting portion is a separate member from a stator holding said stator winding.
5. The dynamoelectric machine according to claim 1 , wherein:
said correcting value is determined using a function of a physical quantity based on a value of line current flowing through said stator winding.
6. The dynamoelectric machine according to claim 5 , wherein:
said correcting value is determined using a second-order function of said value of said line current.
7. The dynamoelectric machine according to claim 1 , wherein:
said estimated value is corrected by averaging over time.
8. The dynamoelectric machine according to claim 1 , wherein:
said temperature measuring means is a temperature sensor.
9. The dynamoelectric machine according to claim 1 , wherein:
an electric current flowing through said stator winding is suppressed if said estimated value is greater than or equal to a predetermined value.
10. The dynamoelectric machine according to claim 1 , wherein:
an engine driven to rotate by said dynamoelectric machine is stopped if said estimated value is less than or equal to a predetermined value when a vehicle is stopped.
11. The dynamoelectric machine according to claim 1 , wherein:
said supporting portion is disposed on a bracket for supporting a stator having said stator winding.
12. The dynamoelectric machine according to claim 1 , wherein:
said supporting portion is disposed on an outer peripheral surface of a stator core to which said stator winding is mounted.
13. The dynamoelectric machine according to claim 1 , wherein:
said thermally-conductive body is a stator core in which said stator winding is disposed.