Hardware in the Loop Test for Relay Model Validation

Future naval ships requires significantly larger amount of energy and power due to loads as pulse weapons and electromagnetic aircraft launch system (EMALS). Modeling and simulation in different conditions are needed for better design of future shipboard power system (SPS). hardware in the loop (HIL) simulation is often used to understand the behavior of a new device, or to predict an outcome under different system conditions without knowing the detail of device design. This paper presents a design procedure of HIL test for power system modeling and simulation using Simulink and national instruments (NI) equipments. A HIL simulation refers to a system in which parts of a pure simulation have been replaced with actual physical components. Additionally, a HIL test could help to build a model and validate a model of a new device. Thus a HIL test provides a testing platform for power devices. Design procedure for the HIL test and simulation results obtained by interfacing a power system with the relay model built in Simulink with NI equipment have been presented.