An air conditioning system for use in an over-the-road or off road vehicle is
provided that allows operation during both engine on and engine off conditions.
The system utilizes a variable speed, motor driven compressor controlled by an
intelligent power generation management controller. This controller selects from
one of the available sources of power on the vehicle to drive the compressor, and
modulates the compressor speed and capacity based on operational parameters and
source availability and depletion. The controller may also operate a coolant or
air heater to provide heating to the interior compartments.
