基于超级电容的新能源汽车复合储能控制策略优化  

Optimization of Hybrid Energy Storage Strategy for Electric Vehicle Based on Super Capacitor

作　　者：张超 张鑫 谢战洪[1] ZHANG Chao;ZHANG Xin;XIE Zhanhong(713th Research Institute of China Shipbuilding Industry Corporation,Zhengzhou 450015,China;Sea Equipment Project Management Center,Beijing 100071,China)

机构地区：[1]中国船舶重工集团公司第七一三研究所,河南郑州450015 [2]海装装备项目管理中心,北京100071

出　　处：《电器与能效管理技术》2021年第11期58-66,共9页Electrical & Energy Management Technology

摘　　要：随着新能源汽车的不断发展,由直流蓄电池导致的充放电速率慢、电压波动大以及电池寿命短等问题尤为突出,提出了一种基于超级电容的复合储能方案,并对其控制算法进行了优化。利用超级电容充放电速率快的特点,快速响应及补偿电机瞬态功率,从而降低母线电压波动,减少蓄电池暂态充放电频率,延长蓄电池使用寿命。同时在传统PI控制算法中引入电流前馈控制,进一步提升响应速度。对复合储能系统和电机控制系统进行了仿真,结果表明在汽车各种运行工况下,优化控制算法能够显著降低母线电压波动,提高电能质量。With the development of electrical vehicle(EV),shortcomings like low charging and discharging speed,large voltage fluctuation and short lifespan of battery become particularly prominent.Aimed at these shortcomings,a hybrid energy storage scheme for EV based on super capacitor(SC)is proposed,and its control strategy is optimized.Taking advantage of fast charging discharging rate of SC,it can quidely respond and compensate the motor transient power,so as to the bus voltage fluctuation and the frequency of the transient battery charging and discharging are reduced,the service life of battery is prolonged.Besides,current feedforward strategy is introduced into the conventional PI strategy to further increase the response speed.The hybrid energy storage system and the motor control system are simulated,the results show that the DC bus voltage variation is effectively limited and the energy quality is improved by the proposed hybrid energy system based on the proposed optimized control scheme through all working modes of EV.

关 键 词：复合储能 双向DC/DC变换器 超级电容 能量回馈 电流前馈 

分 类 号：TM46[电气工程—电器]