Method and system for motor thermal protection

摘要

Various methods and systems are provided for regulating traction motor temperature via control of a traction motor blower. In one embodiment, a method comprises adjusting a speed of a traction motor blower based on ambient temperature, traction motor loss, and one or more traction motor temperatures.

主权项

1. A method comprising:
adjusting a speed of a traction motor blower based on ambient temperature, traction motor loss, and one or more traction motor temperatures, the adjusting the speed of the traction motor blower comprising: determining a first blower speed request based on the ambient temperature and the traction motor loss, and determining one or more second blower speed requests based on the one or more traction motor temperatures, the first blower speed request based on a traction motor loss parameter that is separate from the one or more traction motor temperatures; and selecting a highest blower speed request from among the first blower speed request and the one or more second blower speed requests, and adjusting the traction motor blower speed to the highest blower speed that is selected.