Fault-tolerant reconfigurable second-life battery system using cascaded DC- DC converter

Abstract

Objectives: To control the power flow resulting in improved utilization of the available cells, increased lifetime, and higher reliability. Reduce the gross energy demand and global warming potential and to promote Zero Waste.Methods: A reconfigurable battery system using second-life batteries based on cascaded DC-DC converters is presented. When compared to conventional boost converters, it can be demonstrated that each submodule’s power can be controlled separately, improving the battery system’s available capacity. Faulty battery modules can be bypassed, increasing the system’s reliability and fault tolerance capability. The chosen approach is shown with cascaded system using proportional integral derivative (PID) controller and the Single-phase inverter with SPWM technique for the Stationary load applicationFindings: The proposed cascaded system act as a fault tolerant system since the source is the second-life battery even though there is fault has occurred in the system meets the load demand. These simulations are done in MATLAB and the results are discussed. The DC link voltage of the cascaded system has more ripple based on the tuning of the PID controller with the values of Kp,Ki, Kd the ripple can be decreased.Novelty: Cascaded system with a fault-tolerant system using the second life battery will promote the zero-carbon waste of the batter and it is the new approach