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设计了由燃料电池、动力电池、超级电容3个动力单元组成的氢燃料电池有轨电车混合动力系统结构,并研究了车辆驱动模式和制动模式下的控制方法。驱动模式下,基于母线电压控制方式,按照燃料电池、动力电池、超级电容的先后次序,依次切入动力单元,响应车辆驱动功率要求;制动模式下,按照超级电容、动力电池先后顺序,吸收回馈电能。解决了燃料电池与复合储能系统双模式运行条件下的动力匹配问题,使车辆达到设计的目标最高车速,并改善了经济性。通过实车测试,分析了运行工况、氢气消耗和燃料电池功率变化情况,验证了混合动力系统结构和控制方法的可行性。
The structure of hydrogen fuel cell tram hybrid system composed of 3 power units of fuel cell, power battery and super capacitor is designed and the control methods under vehicle driving mode and braking mode are studied. Under the drive mode, based on the busbar voltage control mode, the power unit is cut in sequence according to the order of the fuel cell, the power battery and the supercapacitor in response to the driving power requirement of the vehicle. In the braking mode, the regenerative power is absorbed according to the order of the supercapacitor and the power battery Electricity. Solve the fuel cell and hybrid energy storage system under dual-mode operation of the power matching problem, the vehicle to achieve the design of the target maximum speed, and improve the economy. Through the real vehicle test, the operating conditions, hydrogen consumption and fuel cell power changes were analyzed, and the feasibility of the hybrid system structure and control method was verified.