Regenerative Braking Modeling on Hybrid Rubber Tired Gantry Crane

Abstract

Rubber tired gantry (RTG) crane is a crane used to stack containers in the port yard. When the rubber tired gantry crane lowers the container, the lifting motor acts as a generator, producing energy that can be absorbed if the RTG crane has an energy storage system. In this final project, RTG crane modeling is carried out with additional batteries (hybrid) as an alternative energy source, then a comparison of the energy used between conventional and hybrid RTG cranes is carried out. Modeling is carried out using Matlab Simulink, following the crane specifications at Pt. Pelindo Makassar New Port. In this final project, simulations are carried out with 3 types of hybrids, namely hybrid A, hybrid B and hybrid C with capacities of 46,704 kWh, 93,408 kWh and 140,112 respectively. The results of the analysis of this study showed that the energy use of hybrids when compared to conventional ones is 51.3% to 70.5% for hybrid A, 39.1% to 70.5% for hybrid C. 48.8% for hybrid B, and 0.297% to 0.486% for hybrid C.