Design of photovoltaic and wind power hybrid system for DC air conditioning application

Abstract

The achievement of optimum performance for the hybrid system, besides having the efficient design of the system, a lot of study on the behaviour of the weather needs to be made because both of the resources hybrid system design can work better with the help of the appropriate weather. The hybrid system managed to help the system to be more stable and reliable in generating the power to charge the battery bank that acts as the energy storage to provide the power to the load. In this particular project, the load of 12 V 630 W DC air-condition have been investigated and analysed in several parts such as PV array and wind turbine output, weather and load performances and modelling using HOMER software. For the normal system, the energy from both solar radiation and wind are managed by the PV and wind using device controller separately. This particular project, Smart Relay SR3 B261JD is used to manage the voltage from PV module and wind turbine. The device operates as a controller to choose the greater voltage that produced from either PV module or wind turbine. The selected power source is used to charge 7 units of YOKOHAMA 100 Ah 12 V battery bank that total up to 700 Ah using the Phocos CX-40 battery charger. The parameters investigated and analysed are voltage, current and power of the PV array, wind turbine and the DC aircondition load. This study finds that the PV energy is more reliable compared to wind energy and the hybrid system could charge the batteries to support the load for 7 hours daily. This new approach to solar wind hybrid system will create a platform for future researchers to explore.