新能源汽车LLC谐振DC/DC仿真设计

Design of LLC resonant DC / DC for new energy vehicles

摘要:

二十一世纪是信息飞速发展的时代,能源技术是世界发展的核心。随着世界能源的过度消耗,世界各国都在发展新能源技术,新能源汽车作为其代表得到了迅速发展,而蓄电池及充放电技术是限制新能源汽车的核心技术之一,对新能源汽车的国内外发展现状及以后的发展趋势进行了分析，指出了双谐振式DC/DC变换器研究的热门问题。采用双谐振式DC/DC变换器作为本次设计变换器的拓扑结构,根据设计要求确定了双谐振式DC/DC变换器的基本参数,使用仿真软件MATLAB/Simulink建立了谐振式DC/DC变换器的仿真模型,用数字控制来达到对谐振式DC/DC变换器的控制,分析其正反向的工作波形,证明了双向谐振式DC/DC变换器的使用在汽车的有效性和可行性,它可以简化电动汽车的控制结构,提高整车的运行效率。

Abstract:

The 21st century is the era of rapid development of information. energy technology is the core of world development. With the excessive consumption of energy in the world, new energy technologies are being developed all over the world, and new energy vehicles as their representatives have developed rapidly. battery and charge-discharge technology is one of the core technologies to limit new energy vehicles. and introduces the development status and future development trend of new energy vehicles at home and abroad, and points out the hot issues in the research of double resonance DC / DC converters. The double resonant DC / DC converter is used as the topology structure of this design converter, and the basic parameters of the double resonant DC / DC converter are determined according to the design requirements. the simulation model of the resonant DC / DC converter is established by MATLAB / Simulink, and the control of the resonant DC / DC converter is achieved by digital control, and its positive and negative working waveforms are analyzed, which proves the effectiveness and feasibility of the use of the double resonant DC / DC converter in automobiles. it can simplify the control structure of electric vehicles and improve the running efficiency of the whole vehicle.