A Control Strategy for Hybrid Autonomous Power System with a Battery Management Scheme

摘要

This article presents a coordinated control strategy for a hybrid autonomous power system to obtain a smooth power transfer between diesel generator and battery energy storage system under transient conditions. In addition, a battery management scheme is also developed to maintain the battery state of charge around 70 to 80% to absorb/inject power under transient conditions and maintains the diesel generator power above 40% of its nominal value. Simulation studies are carried out in MATLAB/Simulink and the performance of the controller is validated experimentally on a laboratory test setup. A TMS320LF2407A DSP controller is used to digitally implement the control strategy and the overall scheme is verified with step changes in load. Moreover, the dynamic behavior of the system is also investigated by directly connecting an induction motor.