Automobile hybrid air conditioning technology

A newly developed hybrid air conditioning system for automobile is introduced. In this system, the air condition compressor is driven by an internal combustion engine of the vehicle when the engine is running. When the engine is not running, the compressor is driven by a brushless DC machine powered by a 24V lead acid battery. The electric machine driven generates electric power for charging the battery. The concept and the structure of this air conditioning system are discussed in this paper.