Generator temperature control

A method of operating a transport refrigeration system comprising a vehicle integrally connected to a transport container, the method comprising:

• powering a transportation refrigeration unit using an energy storage device, the transportation refrigeration unit being configured to provide conditioned air to refrigerated cargo space enclosed within the transport container;
• charging the energy storage device using an electric generation device operably connected to at least one of a wheel of the transport refrigeration system and a wheel axle of the transport refrigeration system, the electric generation device being configured to generate electrical power from at least one of the wheel and the wheel axle to charge the energy storage device when the electric generation device is activated;
• determining a current temperature of the electric generation device;
• and
• adjusting, using a power management module, a torque limit of the electric generation device in response to the current temperature of the electric generation device, the power management module being in electrical communication with the energy storage device and the electric generation device.

A computer program product tangibly embodied on a computer readable medium, the computer program product including instructions that, when executed by a processor, cause the processor to perform operations comprising:

• powering a transportation refrigeration unit using an energy storage device, the transportation refrigeration unit being configured to provide conditioned air to refrigerated cargo space enclosed within the transport container;
• charging the energy storage device using an electric generation device operably connected to at least one of a wheel of the transport refrigeration system and a wheel axle of the transport refrigeration system, the electric generation device being configured to generate electrical power from at least one of the wheel and the wheel axle to charge the energy storage device when the electric generation device is activated;
• determining a current temperature of the electric generation device;
• and
• adjusting, using a power management module, a torque limit of the electric generation device in response to the current temperature of the electric generation device, the power management module being in electrical communication with the energy storage device and the electric generation device.