Power Management Scheme for a Wind-Photovoltaic Hybrid Autonomous System with Battery Storage

Abstract

This paper presents power management scheme for a hybrid autonomous generation system (HAGS). This HAGS is the combination of wind, photovoltaic (PV) generation system and battery for storage purpose. The wind-PV system along with the battery are connected parallel to the dc-bus. The dc-bus voltage is controlled through a bi-directional converter. The controller has inner battery current control loop and outer voltage controller to maintain the dc bus voltage constant. This average current control method is used for power management between all sources and the dc load. The complete hybrid system is simulated in MATLAB/SIMULINK and the results represent the effective power balance for all modes of operation.