Design, control and monitoring of an offline mobile battery energy storage system for a typical malaysian household load using PLC

Abstract

Battery energy storage system (BESS) is used in many practical applications including unin-terruptible power supplies (UPS), portable devices, electrical vehicles and renewable energy systems. To utilize BESS effectively, an efficient control operation is required. Various con- trollers have been introduced in the open literature. However, they are not considered the best fit due to their limitations. This includes their incapability of handling highpower rating BESS, low noise immunity, short life cycle and limited number of input and output interfaces. In this paper, the programmable logic controller (PLC) is used to control and monitor a 158.8 kWh offline BESS for a typical Malaysian household. TIA portal V13 soft- ware by Siemens is used to program the proposed PLC control. Human machine interface (HMI) system is used to monitor and simulate the control performance. The results show that the PLC approach provides an efficient and reliable control of the BESS in which a compact protection against the battery overcharging, underdischarging and overheating is achieved.