Design On Fuel Cell Hybrid System Of Tram

Modern tram has many advantages such as moderate traffic volume and moderate cost, so it is suitable for small-sized and medium-sized cities. It promises to be an important part of the public transport system in future. Hydrogen has a high combustion value, is readily available and environmentally friendly. It has become the developing focus in many field. Therefore, using clean energy to replace the existing energy and has become a hot issue in the research of hybrid tram system all over the world.This paper is based on the simulation under different line conditions, different models grouping, different passenger capacity and different lines operating modes. And it has established an effective design criteria for hybrid system for trams parameter matching, optimized parameters matching design of hybrid system and calculated the basic parameter matching condition of the hybrid system.Secondly, this paper has completed rapid design based on design guidelines. And we have preliminary mastered rapid hybrid system design capability to provide evaluation basis for different trains designs. This paper presents a corresponding matching design principles and to matching design methods based on the basic topology which comprises three different power supply modules including Fuel Cell, Battery and Super-capacitor. This method can calculate the desired power of fuel cell, number of hydrogen tanks required for single round-trip. And it can also calculate the number and the topology of battery and super-capacitor after selecting model of power battery and super-capacitor.Following, this paper uses the traction characteristic curve calculated by the selected various components of the hybrid system configuration to analyze the hybrid power system in order to meet the performance needs. Through calculating the demanded traction inverter power the inverter data and auxiliary power, and importing the basic model of selected hybrid power modules, the whole system is simulated. The comparison between real-time power and demanded power could verify that if the designed hybrid system can meet the requirement of a particular line theoretically. And if there is a problem such as lack of power.At last, this paper completes a rapid design based on an actual line, simulates the performance of the design in the actual operation and analyzes its overall operation as well as its dynamic performance, providing the basis for circuit design.