| 摘要 |
A switching semiconductor device ( 11 ) provided in a semiconductor module ( 10 ) includes a plurality of switching semiconductor elements. A loss calculating section ( 12 ) calculates a power loss generated in the switching semiconductor device ( 11 ) based on a voltage of each of the switching semiconductor elements which is measured by a voltage measuring section ( 13 ) and a current of each of the switching semiconductor elements which is measured by a current measuring section ( 14 ). The loss calculating section ( 12 ) outputs loss data indicative of the power loss thus calculated as a data signal to a motor control section ( 82 ) provided on the outside of the semiconductor module ( 10 ). The motor control section ( 82 ) can recognize the power loss generated in the switching semiconductor device ( 11 ) from the loss data. |
