毕业论文：《混合动力公交车复合储能控制技术》.doc

摘要 混合动力汽车最大的优点是可以利用车载电能储存装置对整车制动时的动能加以回收。这部分能量可以用于汽车驱动，使整车燃油经济性提高，对于城市公交车更显得尤为重要。但由于受到电池性能因素的制约，使得整车制动能量回收效能不佳。现在，混合电动汽车有越来越多的问题出现，没有哪一种单一的能量存储系统可以满足混合电动车行驶全部要求。而复合储能系统将是一个可选择的解决方案。 对系统中多重结构的DC/DC变换器使用了控制型软开关技术，达到了提高效率、减小损耗的目的。搭建了一个基于DSP控制复合储能系统小型实验平台，制作了双向DC/DC变换器主电路，电压、电流的数字采样电路，大功率系统控制信号的驱动等硬件电路。并对系统中功率转换单元的工作状态进行了仿真研究，有效地验证了系统控制方案的有效性和可行性。 本课题研究的以超级电容为主的复合储能系统，设计新颖，这种能量存储装置的研究在混合动力汽车的应用中将是一种趋势。 关镇词:超级电容，混合动力，双向DC/DC变换器，控制型软开关 Abstract Using on-board electrical energy storage device to recover the kinetic energy when vehicle brakes is the biggest advantage of Hybrid vehicle. The energy can be used to drive the cars to reduce the cost of vehicles fuel, which is particularly important for city buses. However, because of battery performance factors, the efficiency of vehicle braking energy recovery is poor. Now, more and more problems have been arisen in hybrid electric vehicles (HEV), and none of any energy sources can solely fulfills all the demands of HEV in some circumstances. Hybrid energy sources system become one alternative solution. Multiple structures of the systems DC/DC converters used to control type soft switching technology to achieve efficiency reduce wear and tear purposes. Structures of a DSP-based control of complex energy storage system in small experimental platform, has produced a bidirectional DC/DC converter main circuit, voltage, current digital sampling circuit, high power system control signal drivers and other hardware circuitry. And system power conversion unit status job simulation, effective system control program to verify the effectiveness and feasibility. This topic research by the super electric capacity hybrid stored energy system, the modern design, this kind of energy storage installments research in HEV application will be one tendency. Key Words: Ultra Capacitor, Hybrid Power， SystemBidirectional， DC/DC Converter, Control Type Soft Switching 目录 TOC \o 1-3 \h \z \u 摘要 h 1 Abstract h 2 目录 h 3 第一章 绪论 h