基于模糊控制的电动车双向DC-DC变换器研究  

Research on the Bi-Directional DC-DC Converter of the Electric Vehicle Based on the Fuzzy Control

作　　者：崔雪[1] 郑翔[1] 穆佩红 高雅洁[1] 

机构地区：[1]上海电机学院电气学院,上海200240

出　　处：《电测与仪表》2014年第14期79-82,共4页Electrical Measurement & Instrumentation

基　　金：上海市教委重点学科(15901)

摘　　要：为了延长车辆续航里程,提高蓄电池的使用寿命,使用超级电容作为辅助的能量源,控制超级电容的双向DC-DC变换器对直流母线进行能量的回馈和补充,提高了电动车电源系统效率。根据蓄电池和超级电容的剩余电量及负载瞬态功率需求,提出了一种模糊控制器改善双能量电动车DC-DC变换器性能的方法。模糊控制器根据车辆运行的不同工况,自动地决策出一个合理的输出电流,进而控制双向半桥Buck/Boost式变换器的电流环。实验结果说明了控制系统具有良好的动态性、可行性、有效性。In order to prolong the driving range and the life cycle of the storage battery, ultracapcitor was used in this study as an auxiliary power source, the bi-directional DC-DC converter of the ultracapacitor was controlled to supplement the energy of the DC bus, and thus the efficiency of the electric vehicle power system was enhanced. Based on the dump energy of the storage battery and ultracapacitor and the need for load transient power, a method was proposed in this paper, in which a fuzzy controller was adopted to improve the performance of the bi-directional DC-DC converter of the electric vehicle. The fuzzy controller could automatically decide on proper output current according to different working conditions of the vehicle, and thereby control the current loop of the bi-directional half-bridge Buck/Boost converter. Simulation results proved that the control system was very dynamic, feasible and effective.

关 键 词：模糊控制 超级电容 双能量管理 双向Buck BOOST变换器 

分 类 号：TM910.6[电气工程—电力电子与电力传动]