Abstract
Almost all residential air conditioners in KSA are inverter air conditioners in which a AC motor is driven by a PWM inverter. Also, people are more aware of their energy consumption than ever before. In order to reduce the energy consumption and then the electricity bill for cooling and refrigeration, we are proposing a solution which consist on increasing the energy efficiency of the conventional Air Conditioning system by replacing the alternative current motor (AC) by a direct current brushless motor (BLDCM) powered by PV panels in the off grid areas. This technic allows to reduce the energy consumption to less than half that of AC air conditioners. This paper reviews the trends and the latest energy-efficient technologies for an off grid solar powered brushless DC air conditioner that achieve considerable energy saving.