Design of Air Motor Speed Control System for Small Scale Compressed Air Energy Storage Using Fuzzy Logic

Abstract

Research on energy storage technology is an interesting topic, especially in Small Scale Compressed Air Energy Storage (SS-CAES) which is considered more environmentally friendly and does not have degrade over time such as other energy storage technologies. To generate the power in SS-CAES, it is by adjusting the rotation speed of the generator to get the certain speed by the user. However, existing research shows that the speed control still utilizes electric torque that counteracts the mechanical torque of the turbine rotation, so this is considered to be wasteful of power. Therefore, this paper will provide control of the generator rotation speed by utilizing the air that passes through the generator (mechanical torque only). This speed control utilizes fuzzy logic to achieve the desired speed and reach steady-state in less than 10 seconds.