摘要
针对加装超级电容的电动汽车复合储能系统对双向DC/DC变换器动态响应快、低压和大电流的要求,选择了一种交错并联双向DC/DC变换器拓扑。它具有开关管电压应力小、输出电压和电感电流纹波小等优点。提出了电压外环、双电流内环的控制构架,并对双向DC/DC变换器进行小信号建模,在此基础上设计了相应的控制器。最后通过电力电子仿真软件进行了仿真。结果表明:所选拓扑及其控制方法能够满足电动汽车复合储能系统的需求。
In order to meet the low-voltage, high-current, fast-response requirements of the bi-directional DC/DC converter for the hybrid energy system of an electric vehicleper-capacitor, an interleaved bi-directional DC/DC converter topology is used. The topology has ad-vantages of small current stress, low output voltage and small ripple current. A contthe inner-loop current and outer-loop voltage is proposed , and the bi-directional DC/DC converter is modeled by using the small signal modeling. On the basis of this , a controller is designed. Finally , the simulation is performed with the power electronic simulation software PSIM. The results show that the utilized topology and its corresponding control method can meet energy system of the electric vehicle.
作者
顾杰
GUJie(College of Logistics Engineering,Shanghai Maritime University,Shanghai 201306,China)
出处
《上海电机学院学报》
2018年第4期31-35,共5页
Journal of Shanghai Dianji University
