在混合动力汽车行驶中,为了能让车载超级电容有效地为蓄电池提供能量缓冲，其荷电状态（SOC）需保持在一个安全范围内,以防止电容过充或能量不足。针对这一问题，基于车载超级电容的工作特性，改进了传统的车用混合储能系统滤波分配法，舍弃算法逻辑复杂、参数设计困难的逻辑门控制，使用简单的PI控制实现了电动汽车运行过程中超级电容电量的自保持，并通过基于TMS320F2812控制的混合储能装置和基于半实物仿真的永磁同步电机试验平台对所提出的方法进行了试验验证。结果表明，该方法在超级电容提供负载峰值功率，达到对蓄电池“削峰填谷”目标的同时，又使其稳态电压保持在一个稳定值，满足混合动力汽车对于车载超级电容的能量回收要求。

In order to effectively provide energy buffer for the battery during the driving of hybrid electric vehicle, the state of charge (SOC) of the vehicle-mounted super-capacitor should be kept within a safe range to prevent capacitor overcharge or insufficient energy. To solve this problem, based on the working characteristics of the vehicle-mounted super-capacitors, we improve the traditional filtering distribution method of vehicle-based hybrid energy storage system. The logic gate control which uses complex algorithm logic and is difficult to design parameters is abandoned, and a simple PI control is used to realize the self-maintenance of super-capacitor power during the operation of electric vehicles. The proposed method is verified by a hybrid energy storage device based on the control of TMS320F2812 and a permanent magnet synchronous motor experimental platform based on hardware-in-the-loop simulation. The results show that this method can not only provide peak load power for the super-capacitor, achieve the "peak load shifting" of the battery, but also keep its steady-state voltage at a stable value, which can meet the energy recovery requirements of the vehicle-mounted super-capacitor for the hybrid electric vehicle.

国家自然科学基金项目(52077140)