A fuel-cell vehicle (FCV) mainly depends on the fuel-cell system (FCS) to provide the power to drive the vehicle. A battery is also integrated as the second power source, which has the advantage of high density and quick dynamic response. Since two power sources co-exist in the vehicle, the control balance of how to distribute the transient power requirement between the FCS and the battery has a great impact on the performance of the FCV. In this paper, the dynamic model of FCS, the battery, the electric motor (EM), and its control unit are first established. Then the parameters in these models are determined by using the least squares method to achieve an analytical description of the power-train system. According to the FCV model, the power balance control based on the best state feedback is realized. This optimized control is verified over three different typical driving cycles through simulation and a bench experiment. The results show that the balance control has a practical application for FCV in improving the fuel economy and the dynamic performance.

中文翻译：

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基于全状态反馈的燃料电池混合动力汽车功率平衡控制

燃料电池汽车（FCV）主要依靠燃料电池系统（FCS）来提供驱动车辆的动力。还集成了电池作为第二电源，具有密度高、动态响应快的优点。由于车辆中同时存在两种电源，FCS和电池之间的瞬态功率需求如何分配的控制平衡对FCV的性能影响很大。在本文中，首先建立了FCS、电池、电动机（EM）及其控制单元的动力学模型。然后通过使用最小二乘法确定这些模型中的参数以实现对动力传动系统的解析描述。根据FCV模型，实现了基于最佳状态反馈的功率平衡控制。这种优化控制通过模拟和台架实验在三个不同的典型驾驶循环中得到验证。结果表明，平衡控制在提高燃料经济性和动力性能方面对燃料电池汽车具有实际应用。