车载复合电源回馈制动的模糊控制方法研究

Study on fuzzy logic control strategy of regenerative brake for vehicular hybrid power source

针对混合动力汽车续航能力不足的缺陷,采用蓄电池与超级电容结合的复合电源作为车载电源,并在汽车制动过程中对车载电源进行充电。以＂电容电量低,电池少充电;电容电量高,电池多充电＂为原则,采用模糊控制策略对回馈能量进行管理。在Matlab/Simulink中搭建模糊控制下的车载复合电源回馈制动模型。仿真结果表明,该方法能够有效管理回馈制动过程的能量分配,延长汽车续驶里程,改善汽车燃油经济性并减少排放。

Due to the lack of cruising ability in HEV （Hybrid Electric Vehicle）, along with concerns about environmental issues, a hybrid power source built from a battery and an ultracapacitor was used as vehicular power source and was charged during braking processes. Based on the rule of the lower ultracapacitor voltage, the less battery charging; the higher ultracapacitor voltage, the more battery charging, a fuzzy logic control strategy was adopted to supervise the braking energy. Simulation results obtained using Matlab/Simulink indicate that this method can effectively manage the energy distribution during regenerative braking processes and extend driving distance. Furthermore, an improvement in fuel economy and reduces pollutant emissions were provided.