Dynamic improvement of BESS using dead-beat type controller

Battery Energy Storage Systems (BESS) are widely used in local power networks. In order to improve dynamic response of the BESS and to take advantage of implementation algorithms based on microprocessors of Digital Signal Processing (DSP) systems, the authors of the paper proposed a deadbeat current controller design for the BESS. The main idea of the method is relied on the grid voltage oriented vector control approach on the well-known dq rotational frame and the space vector SVM pulse width modulation technique. The system is described by state-space equations that are then transformed into the discrete-time domain with a high sampling frequency (5kHz). The designed controller guarantees that the actual values of the plant currents follow their set values after a desired time (in 2 sampling periods). Result, simulated by Matlab/Simulink, shows that this control structure satisfies established demands toward BESS system and has fast dynamic response.