基于DSP的燃料电池车复合直流系统的设计与实现  

Design and Implementation of Compound DC System for Fuel Cell Vehicle Based on DSP

作　　者：曹晓娟[1,2] 庹朝永[1] 

机构地区：[1]湖南机电职业技术学院,长沙410151 [2]湖南大学,汽车车身先进设计制造国家重点实验室,长沙410082

出　　处：《汽车工程》2015年第6期719-724,共6页Automotive Engineering

基　　金：国家自然科学基金(51175159);汽车车身先进设计制造国家重点实验室自主课题团队重点项目(61075004);湖南省教育厅科学研究项目(13C261);湖南省职业院校教育教学改革研究项目(ZJC2013018)资助

摘　　要：为燃料电池车提出了一种复合直流系统方案,该方案采用DSP控制单个DC/DC变换器实现直流系统能量的统一管理。变换器有4种工作模式,且可归纳为两种电路拓扑:串并联谐振变换器和串联谐振变换器。详细分析了串并联谐振变换器的软开关实现条件,由于考虑了变压器副边整流开关管寄生电容对死区时间内换流过程的影响,故分析得到的励磁电感限制条件更加精确。给出了该复合直流系统的设计与实现方法。最后搭建了一台基于TMS320F28335的300W样机,实验结果验证了该系统的可行性。A scheme of compound DC system for fuel cell vehicles is proposed, which uses a digital signal processor to control a single DC/DC converter to achieve unified energy management of DC system. There are four different working modes and they can be classified into two circuit topologies： series / parallel resonant converter and series resonant converter, in which the soft switching condition of series and parallel resonant converter is ana- lyzed in detail. By taking into account the effects of the parasitic capacitance of rectifying transistor in the secondary side of transformer on the process of dead time commutation, the analyzed critical condition of magnetizing inductance is more accurate. The design and implementation methods of the compound DC system are also given. Finally, a 300W prototype is build based on TMS320F28335 and the experiment results verify the feasibility of the system.

关 键 词：燃料电池车 直流系统 DC/DC变换器 软开关 数字信号处理器 

分 类 号：U469.722[机械工程—车辆工程]