Power Hardware-in-the-Loop test of the energy feedback device in urban rail transportation system

Due to the lack of verification with reliable testing methods and testing equipment, the power quality and the safety operation of the energy feedback device in a DC urban rail traction power system should be more deeply investigated. Only satisfactory validation will lead to the application of energy feedback devices , and this leads to a lot of braking energy waste. This paper presents a power Hardware-in-the-loop testing method and equipment. With the real-time simulation of both the AC and DC side of the energy feedback device, the energy feedback device will have a comprehensive test in a near real grid environment.