Electric load simulation for 48V DC converter using HIL simulator

초록

A 48V DC converter on 48V power net is used to charge the 12V battery with electrical energy generated from an electrical drive system, such as a motor starter generator (MSG). The efficiency of the DC converter is influenced by the input voltage from 48V battery and the input voltage from 12V battery, and also depends on the load power level. A mode transition strategy for controlling the operating range of the DC converter in the efficiency section is proposed. This study also presents a practical method to simulate the real power conditions of the 48V converter through hardware-in-the-loop (HIL) simulator.