Auxiliary System Simulation of CRH2 EMUs under Power Failure of High-Speed Railway.

With the rapid development of high-speed railway, EMU has become an important research hotspot. How to improve the stability and reliability of EMU power supply, while reducing energy consumption, protecting the environment, become the future direction of development. Therefore, in view of the power failure of the contact network, this paper proposes the idea of installing solar panels on the roof of the EMU and using photovoltaic power to supply power to important auxiliary equipment. Taking China Railway High-speed 2 (CRH2) EMU as an example, according to the characteristics of roof and auxiliary power supply system, the feasibility of roof photovoltaic generation is analysed. At the same time, the scheme and strategy of the grid-connected power supply with deadbeat control under normal conditions and the droop control of the island under power supply failure are proposed. Matlab/Simulink software is used to simulate the photovoltaic generation system of two kinds of control strategy and the transition time. Finally, by comparing the photovoltaic system and the traditional power supply plan, the many advantages of EMU to introduce the photovoltaic generation system are analysed, and gets the conclusion that it is of great significance in practical application. [ABSTRACT FROM AUTHOR]